From 27d6fa4d5acd2cb46d620876f65a6633b82c6be8 Mon Sep 17 00:00:00 2001
From: Nicolas Capponi <nicolas.capponi@forgerock.com>
Date: Mon, 30 May 2016 13:58:13 +0000
Subject: [PATCH] OPENDJ-3001 Migrate NameForm to SDK

---
 opendj-server-legacy/src/main/java/org/opends/server/core/DirectoryServer.java                                      |   22 
 opendj-server-legacy/src/main/java/org/opends/server/schema/DITStructureRuleSyntax.java                             |    8 
 opendj-server-legacy/src/main/java/org/opends/server/types/DITStructureRule.java                                    |    1 
 opendj-server-legacy/src/main/java/org/opends/server/schema/NameFormSyntax.java                                     |  966 ---------------------------
 opendj-server-legacy/src/test/java/org/opends/server/schema/GenericSchemaTestCase.java                              |    5 
 opendj-server-legacy/src/main/java/org/opends/server/types/Schema.java                                              |  295 +++----
 opendj-server-legacy/src/main/java/org/opends/server/core/SchemaConfigManager.java                                  |   33 
 opendj-server-legacy/src/test/java/org/opends/server/backends/SchemaBackendTestCase.java                            |   14 
 opendj-server-legacy/src/main/java/org/opends/server/extensions/GoverningStructureRuleVirtualAttributeProvider.java |    5 
 opendj-server-legacy/src/messages/org/opends/messages/schema.properties                                             |    6 
 /dev/null                                                                                                           |  468 -------------
 opendj-server-legacy/src/main/java/org/opends/server/backends/SchemaBackend.java                                    |  228 +-----
 opendj-server-legacy/src/main/java/org/opends/server/types/Entry.java                                               |    9 
 opendj-server-legacy/src/main/java/org/opends/server/types/DirectoryConfig.java                                     |   23 
 14 files changed, 198 insertions(+), 1,885 deletions(-)

diff --git a/opendj-server-legacy/src/main/java/org/opends/server/backends/SchemaBackend.java b/opendj-server-legacy/src/main/java/org/opends/server/backends/SchemaBackend.java
index 9bc704c..9b73274 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/backends/SchemaBackend.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/backends/SchemaBackend.java
@@ -64,6 +64,7 @@
 import org.forgerock.opendj.ldap.schema.CoreSchema;
 import org.forgerock.opendj.ldap.schema.MatchingRule;
 import org.forgerock.opendj.ldap.schema.MatchingRuleUse;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.ldap.schema.ObjectClass;
 import org.forgerock.opendj.ldap.schema.ObjectClassType;
 import org.forgerock.opendj.ldap.schema.SchemaElement;
@@ -84,7 +85,6 @@
 import org.opends.server.schema.DITContentRuleSyntax;
 import org.opends.server.schema.DITStructureRuleSyntax;
 import org.opends.server.schema.GeneralizedTimeSyntax;
-import org.opends.server.schema.NameFormSyntax;
 import org.opends.server.schema.ServerSchemaElement;
 import org.opends.server.schema.SomeSchemaElement;
 import org.opends.server.types.Attribute;
@@ -104,7 +104,6 @@
 import org.opends.server.types.LDIFImportConfig;
 import org.opends.server.types.LDIFImportResult;
 import org.opends.server.types.Modification;
-import org.opends.server.types.NameForm;
 import org.opends.server.types.Privilege;
 import org.opends.server.types.RestoreConfig;
 import org.opends.server.types.Schema;
@@ -580,7 +579,7 @@
      */
     buildSchemaAttribute(schema.getSyntaxes(), userAttrs,
         operationalAttrs, ldapSyntaxesType, includeSchemaFile, false, true);
-    buildSchemaAttribute(schema.getNameFormsByNameOrOID().values(), userAttrs,
+    buildSchemaAttribute(schema.getNameForms(), userAttrs,
         operationalAttrs, nameFormsType, includeSchemaFile, false, true);
     buildSchemaAttribute(schema.getDITContentRules().values(), userAttrs,
         operationalAttrs, ditContentRulesType, includeSchemaFile, false, true);
@@ -769,21 +768,7 @@
           {
             for (ByteString v : a)
             {
-              NameForm nf;
-              try
-              {
-                nf = NameFormSyntax.decodeNameForm(v, newSchema, false);
-              }
-              catch (DirectoryException de)
-              {
-                logger.traceException(de);
-
-                LocalizableMessage message = ERR_SCHEMA_MODIFY_CANNOT_DECODE_NAME_FORM.get(
-                    v, de.getMessageObject());
-                throw new DirectoryException(
-                    ResultCode.INVALID_ATTRIBUTE_SYNTAX, message, de);
-              }
-
+              NameForm nf = newSchema.parseNameForm(v.toString());
               addNameForm(nf, newSchema, modifiedSchemaFiles);
             }
           }
@@ -893,21 +878,7 @@
           {
             for (ByteString v : a)
             {
-              NameForm nf;
-              try
-              {
-                nf = NameFormSyntax.decodeNameForm(v, newSchema, false);
-              }
-              catch (DirectoryException de)
-              {
-                logger.traceException(de);
-
-                LocalizableMessage message = ERR_SCHEMA_MODIFY_CANNOT_DECODE_NAME_FORM.get(
-                    v, de.getMessageObject());
-                throw new DirectoryException(
-                    ResultCode.INVALID_ATTRIBUTE_SYNTAX, message, de);
-              }
-
+              NameForm nf = newSchema.parseNameForm(v.toString());
               removeNameForm(nf, newSchema, mods, pos, modifiedSchemaFiles);
             }
           }
@@ -1155,13 +1126,13 @@
     // Otherwise, we're replacing an existing one.
     if (existingType.isPlaceHolder())
     {
-      String schemaFile = addNewSchemaElement(modifiedSchemaFiles, new SomeSchemaElement(attributeType));
+      String schemaFile = addNewSchemaElement(modifiedSchemaFiles, new ServerSchemaElement(attributeType));
       schema.registerAttributeType(attributeType, schemaFile, false);
     }
     else
     {
       String schemaFile = replaceExistingSchemaElement(
-          modifiedSchemaFiles, new SomeSchemaElement(attributeType), new SomeSchemaElement(existingType));
+          modifiedSchemaFiles, new ServerSchemaElement(attributeType), new ServerSchemaElement(existingType));
       schema.replaceAttributeType(attributeType, existingType, schemaFile);
     }
   }
@@ -1186,15 +1157,6 @@
     modifiedSchemaFiles.add(schemaFile);
   }
 
-  /** Update list of modified files and return the schema file to use for the added element (may be null). */
-  private String addNewSchemaElement(Set<String> modifiedSchemaFiles, SomeSchemaElement elem)
-  {
-    String schemaFile = elem.getSchemaFile();
-    String finalFile = schemaFile != null ? schemaFile : FILE_USER_SCHEMA_ELEMENTS;
-    modifiedSchemaFiles.add(finalFile);
-    return schemaFile == null ? finalFile : null;
-  }
-
   /**
    * Update list of modified files and return the schema file to use for the
    * added element (may be null).
@@ -1233,33 +1195,6 @@
     }
   }
 
-  /** Update list of modified files and return the schema file to use for the new element (may be null). */
-  private String replaceExistingSchemaElement(
-      Set<String> modifiedSchemaFiles, SomeSchemaElement newElem, SomeSchemaElement existingElem)
-  {
-    String newSchemaFile = newElem.getSchemaFile();
-    String oldSchemaFile = existingElem.getSchemaFile();
-    if (newSchemaFile == null)
-    {
-      if (oldSchemaFile == null)
-      {
-        oldSchemaFile = FILE_USER_SCHEMA_ELEMENTS;
-      }
-      modifiedSchemaFiles.add(oldSchemaFile);
-      return oldSchemaFile;
-    }
-    else if (oldSchemaFile == null || oldSchemaFile.equals(newSchemaFile))
-    {
-      modifiedSchemaFiles.add(newSchemaFile);
-    }
-    else
-    {
-      modifiedSchemaFiles.add(newSchemaFile);
-      modifiedSchemaFiles.add(oldSchemaFile);
-    }
-    return null;
-  }
-
   /**
    * Update list of modified files and return the schema file to use for the new
    * element (may be null).
@@ -1343,37 +1278,6 @@
       }
     }
 
-    // Make sure that the attribute type isn't used as a required or optional
-    // attribute type in any objectclass.
-    for (ObjectClass oc : schema.getObjectClasses())
-    {
-      if (oc.getDeclaredRequiredAttributes().contains(removeType) ||
-          (oc.getDeclaredOptionalAttributes().contains(removeType) && !oc.isExtensible()))
-      {
-        LocalizableMessage message = ERR_SCHEMA_MODIFY_REMOVE_AT_IN_OC.get(
-            removeType.getNameOrOID(), oc.getNameOrOID());
-        throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
-      }
-    }
-
-    // Make sure that the attribute type isn't used as a required or optional
-    // attribute type in any name form.
-    for (List<NameForm> mappedForms :
-                      schema.getNameFormsByObjectClass().values())
-    {
-      for(NameForm nf : mappedForms)
-      {
-        if (nf.getRequiredAttributes().contains(removeType) ||
-            nf.getOptionalAttributes().contains(removeType))
-        {
-          LocalizableMessage message = ERR_SCHEMA_MODIFY_REMOVE_AT_IN_NF.get(
-              removeType.getNameOrOID(), nf.getNameOrOID());
-          throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM,
-                  message);
-        }
-      }
-    }
-
     // Make sure that the attribute type isn't used as a required, optional, or
     // prohibited attribute type in any DIT content rule.
     for (DITContentRule dcr : schema.getDITContentRules().values())
@@ -1402,7 +1306,7 @@
     // If we've gotten here, then it's OK to remove the attribute type from
     // the schema.
     schema.deregisterAttributeType(removeType);
-    String schemaFile = new SomeSchemaElement(removeType).getSchemaFile();
+    String schemaFile = new ServerSchemaElement(removeType).getSchemaFile();
     if (schemaFile != null)
     {
       modifiedSchemaFiles.add(schemaFile);
@@ -1513,13 +1417,13 @@
     // Otherwise, we're replacing an existing one.
     if (existingClass.isPlaceHolder())
     {
-      String schemaFile = addNewSchemaElement(modifiedSchemaFiles, new SomeSchemaElement(objectClass));
+      String schemaFile = addNewSchemaElement(modifiedSchemaFiles, new ServerSchemaElement(objectClass));
       schema.registerObjectClass(objectClass, schemaFile, false);
     }
     else
     {
       final String schemaFile = replaceExistingSchemaElement(
-          modifiedSchemaFiles, new SomeSchemaElement(objectClass), new SomeSchemaElement(existingClass));
+          modifiedSchemaFiles, new ServerSchemaElement(objectClass), new ServerSchemaElement(existingClass));
       schema.replaceObjectClass(objectClass, existingClass, schemaFile);
     }
   }
@@ -1620,8 +1524,8 @@
 
     // Make sure that the objectclass isn't used as the structural class for
     // any name form.
-    List<NameForm> mappedForms = schema.getNameForm(removeClass);
-    if (mappedForms != null)
+    Collection<NameForm> mappedForms = schema.getNameForm(removeClass);
+    if (!mappedForms.isEmpty())
     {
       StringBuilder buffer = new StringBuilder();
       for(NameForm nf : mappedForms)
@@ -1677,52 +1581,9 @@
                            Set<String> modifiedSchemaFiles)
           throws DirectoryException
   {
-    // First, see if the specified name form already exists.  We'll check the
-    // OID and all of the names, which means that it's possible there could be
-    // more than one match (although if there is, then we'll refuse the
-    // operation).
-    NameForm existingNF =
-         schema.getNameForm(nameForm.getOID());
-    for (String name : nameForm.getNames().keySet())
-    {
-      NameForm nf = schema.getNameForm(name);
-      if (nf == null)
-      {
-        continue;
-      }
-      else if (existingNF == null)
-      {
-        existingNF = nf;
-      }
-      else if (existingNF != nf)
-      {
-        // NOTE:  We really do want to use "!=" instead of "! t.equals()"
-        // because we want to check whether it's the same object instance, not
-        // just a logical equivalent.
-        LocalizableMessage message =
-                ERR_SCHEMA_MODIFY_MULTIPLE_CONFLICTS_FOR_ADD_NAME_FORM
-                        .get(nameForm.getNameOrOID(), existingNF.getNameOrOID(),
-                  nf.getNameOrOID());
-        throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
-      }
-    }
-
-    // Make sure that the new name form doesn't reference an undefined
-    // structural class, or an undefined required or optional attribute type, or
-    // that any of them are marked OBSOLETE.
+    // Make sure that the new name form doesn't reference an objectclass
+    // or attributes that are marked OBSOLETE.
     ObjectClass structuralClass = nameForm.getStructuralClass();
-    if (! schema.hasObjectClass(structuralClass.getOID()))
-    {
-      LocalizableMessage message = ERR_SCHEMA_MODIFY_NF_UNDEFINED_STRUCTURAL_OC.get(
-          nameForm.getNameOrOID(), structuralClass.getNameOrOID());
-      throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
-    }
-    if (structuralClass.getObjectClassType() != ObjectClassType.STRUCTURAL)
-    {
-      LocalizableMessage message = ERR_SCHEMA_MODIFY_NF_OC_NOT_STRUCTURAL.get(
-          nameForm.getNameOrOID(), structuralClass.getNameOrOID());
-      throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
-    }
     if (structuralClass.isObsolete())
     {
       LocalizableMessage message = ERR_SCHEMA_MODIFY_NF_OC_OBSOLETE.get(
@@ -1732,13 +1593,7 @@
 
     for (AttributeType at : nameForm.getRequiredAttributes())
     {
-      if (! schema.hasAttributeType(at.getOID()))
-      {
-        LocalizableMessage message = ERR_SCHEMA_MODIFY_NF_UNDEFINED_REQUIRED_ATTR.get(
-            nameForm.getNameOrOID(), at.getNameOrOID());
-        throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
-      }
-      else if (at.isObsolete())
+      if (at.isObsolete())
       {
         LocalizableMessage message = ERR_SCHEMA_MODIFY_NF_OBSOLETE_REQUIRED_ATTR.get(
             nameForm.getNameOrOID(), at.getNameOrOID());
@@ -1748,13 +1603,7 @@
 
     for (AttributeType at : nameForm.getOptionalAttributes())
     {
-      if (! schema.hasAttributeType(at.getOID()))
-      {
-        LocalizableMessage message = ERR_SCHEMA_MODIFY_NF_UNDEFINED_OPTIONAL_ATTR.get(
-            nameForm.getNameOrOID(), at.getNameOrOID());
-        throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
-      }
-      else if (at.isObsolete())
+      if (at.isObsolete())
       {
         LocalizableMessage message = ERR_SCHEMA_MODIFY_NF_OBSOLETE_OPTIONAL_ATTR.get(
             nameForm.getNameOrOID(), at.getNameOrOID());
@@ -1764,17 +1613,19 @@
 
     // If there is no existing class, then we're adding a new name form.
     // Otherwise, we're replacing an existing one.
-    if (existingNF == null)
+    if (!schema.hasNameForm(nameForm.getNameOrOID()))
     {
-      schema.registerNameForm(nameForm, false);
-      addNewSchemaElement(modifiedSchemaFiles, nameForm);
+      String schemaFile = addNewSchemaElement(modifiedSchemaFiles, new ServerSchemaElement(nameForm));
+      schema.registerNameForm(nameForm, schemaFile, false);
     }
     else
     {
+      NameForm existingNF = schema.getNameForm(nameForm.getNameOrOID());
       schema.deregisterNameForm(existingNF);
-      schema.registerNameForm(nameForm, false);
+      String schemaFile = replaceExistingSchemaElement(
+          modifiedSchemaFiles, new ServerSchemaElement(nameForm), new ServerSchemaElement(existingNF));
+      schema.registerNameForm(nameForm, schemaFile, false);
       schema.rebuildDependentElements(existingNF);
-      replaceExistingSchemaElement(modifiedSchemaFiles, nameForm, existingNF);
     }
   }
 
@@ -1809,16 +1660,14 @@
                               Set<String> modifiedSchemaFiles)
           throws DirectoryException
   {
-    // See if the specified name form is actually defined in the server schema.
-    // If not, then fail.
-    NameForm removeNF = schema.getNameForm(nameForm.getOID());
-    if (removeNF == null || !removeNF.equals(nameForm))
+    if (!schema.hasNameForm(nameForm.getOID()))
     {
-      LocalizableMessage message = ERR_SCHEMA_MODIFY_REMOVE_NO_SUCH_NAME_FORM.get(
-          nameForm.getNameOrOID());
-      throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
+      throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM,
+          ERR_SCHEMA_MODIFY_REMOVE_NO_SUCH_NAME_FORM.get(nameForm.getNameOrOID()));
     }
 
+    NameForm removeNF = schema.getNameForm(nameForm.getOID());
+
     // See if there is another modification later to add the name form back
     // into the schema.  If so, then it's a replace and we should ignore the
     // remove because adding it back will handle the replace.
@@ -1838,7 +1687,7 @@
         NameForm nf;
         try
         {
-          nf = NameFormSyntax.decodeNameForm(v, schema, true);
+          nf = schema.parseNameForm(v.toString());
         }
         catch (DirectoryException de)
         {
@@ -1859,8 +1708,7 @@
       }
     }
 
-    // Make sure that the name form isn't referenced by any DIT structure
-    // rule.
+    // Make sure that the name form isn't referenced by any DIT structure rule.
     DITStructureRule dsr = schema.getDITStructureRule(removeNF);
     if (dsr != null)
     {
@@ -1869,8 +1717,7 @@
       throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
     }
 
-    // If we've gotten here, then it's OK to remove the name form from the
-    // schema.
+    // If we've gotten here, then it's OK to remove the name form from the schema.
     schema.deregisterNameForm(removeNF);
     String schemaFile = getSchemaFile(removeNF);
     if (schemaFile != null)
@@ -2635,7 +2482,7 @@
     values = new LinkedHashSet<>();
     for (AttributeType at : schema.getAttributeTypes())
     {
-      String atSchemaFile = new SomeSchemaElement(at).getSchemaFile();
+      String atSchemaFile = new ServerSchemaElement(at).getSchemaFile();
       if (schemaFile.equals(atSchemaFile))
       {
         addAttrTypeToSchemaFile(schema, schemaFile, at, values, addedTypes, 0);
@@ -2674,14 +2521,11 @@
     // is no hierarchical relationship between name forms, we don't need to
     // worry about ordering.
     values = new LinkedHashSet<>();
-    for (List<NameForm> forms : schema.getNameFormsByObjectClass().values())
+    for (NameForm nf : schema.getNameForms())
     {
-      for(NameForm nf : forms)
+      if (schemaFile.equals(getSchemaFile(nf)))
       {
-        if (schemaFile.equals(getSchemaFile(nf)))
-        {
-          values.add(ByteString.valueOfUtf8(nf.toString()));
-        }
+        values.add(ByteString.valueOfUtf8(nf.toString()));
       }
     }
 
@@ -2811,7 +2655,7 @@
 
     AttributeType superiorType = attributeType.getSuperiorType();
     if (superiorType != null &&
-        schemaFile.equals(new SomeSchemaElement(attributeType).getSchemaFile()) &&
+        schemaFile.equals(new ServerSchemaElement(attributeType).getSchemaFile()) &&
         !addedTypes.contains(superiorType))
     {
       addAttrTypeToSchemaFile(schema, schemaFile, superiorType, values,
@@ -3345,7 +3189,7 @@
       {
         // Parse the attribute type.
         AttributeType attrType = schema.parseAttributeType(v.toString());
-        String schemaFile = new SomeSchemaElement(attrType).getSchemaFile();
+        String schemaFile = new ServerSchemaElement(attrType).getSchemaFile();
         if (CONFIG_SCHEMA_ELEMENTS_FILE.equals(schemaFile))
         {
           // Don't import the file containing the definitions of the
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/core/DirectoryServer.java b/opendj-server-legacy/src/main/java/org/opends/server/core/DirectoryServer.java
index 641aaf8..c0afe5f 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/core/DirectoryServer.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/core/DirectoryServer.java
@@ -74,6 +74,7 @@
 import org.forgerock.opendj.ldap.schema.CoreSchema;
 import org.forgerock.opendj.ldap.schema.MatchingRule;
 import org.forgerock.opendj.ldap.schema.MatchingRuleUse;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.ldap.schema.ObjectClass;
 import org.forgerock.opendj.ldap.schema.Syntax;
 import org.forgerock.opendj.ldap.schema.UnknownSchemaElementException;
@@ -160,7 +161,6 @@
 import org.opends.server.types.LDIFImportConfig;
 import org.opends.server.types.LockManager;
 import org.opends.server.types.Modification;
-import org.opends.server.types.NameForm;
 import org.opends.server.types.Operation;
 import org.opends.server.types.Privilege;
 import org.opends.server.types.RestoreConfig;
@@ -2676,31 +2676,19 @@
    * @return  The requested name forms, or {@code null} if no such name
    *           form is defined in the schema.
    */
-  public static List<NameForm> getNameForm(ObjectClass objectClass)
+  public static Collection<NameForm> getNameForm(ObjectClass objectClass)
   {
     return directoryServer.schema.getNameForm(objectClass);
   }
 
   /**
-   * Retrieves the name form associated with the specified name or OID.
-   *
-   * @param  lowerName  The name or OID of the name form to retrieve, formatted
-   *                    in all lowercase characters.
-   *
-   * @return  The requested name form, or {@code null} if no such name form
-   *          is defined in the schema.
-   */
-  public static NameForm getNameForm(String lowerName)
-  {
-    return directoryServer.schema.getNameForm(lowerName);
-  }
-
-  /**
    * Deregisters the provided name form with the Directory Server.
    *
    * @param  nameForm  The name form to deregister with the server.
+   * @throws DirectoryException
+   *            If an error occurs.
    */
-  public static void deregisterNameForm(NameForm nameForm)
+  public static void deregisterNameForm(NameForm nameForm) throws DirectoryException
   {
     directoryServer.schema.deregisterNameForm(nameForm);
   }
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/core/SchemaConfigManager.java b/opendj-server-legacy/src/main/java/org/opends/server/core/SchemaConfigManager.java
index adf6089..f82b5a1 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/core/SchemaConfigManager.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/core/SchemaConfigManager.java
@@ -34,7 +34,6 @@
 import org.forgerock.opendj.ldap.schema.Syntax;
 import org.opends.server.schema.DITContentRuleSyntax;
 import org.opends.server.schema.DITStructureRuleSyntax;
-import org.opends.server.schema.NameFormSyntax;
 import org.opends.server.types.Attribute;
 import org.opends.server.types.DITContentRule;
 import org.opends.server.types.DITStructureRule;
@@ -43,7 +42,6 @@
 import org.opends.server.types.InitializationException;
 import org.opends.server.types.LDIFImportConfig;
 import org.opends.server.types.Modification;
-import org.opends.server.types.NameForm;
 import org.opends.server.types.Schema;
 import org.opends.server.util.LDIFReader;
 import org.opends.server.util.StaticUtils;
@@ -721,39 +719,12 @@
       {
         for (ByteString v : a)
         {
-          // Parse the name form.
-          NameForm nf;
-          try
-          {
-            nf = NameFormSyntax.decodeNameForm(v, schema, false);
-            nf.getExtraProperties().remove(SCHEMA_PROPERTY_FILENAME);
-            setSchemaFile(nf, schemaFile);
-          }
-          catch (DirectoryException de)
-          {
-            logger.traceException(de);
-
-            LocalizableMessage message = WARN_CONFIG_SCHEMA_CANNOT_PARSE_NAME_FORM.get(
-                    schemaFile, de.getMessageObject());
-            reportError(failOnError, de, message);
-            continue;
-          }
-          catch (Exception e)
-          {
-            logger.traceException(e);
-
-            LocalizableMessage message = WARN_CONFIG_SCHEMA_CANNOT_PARSE_NAME_FORM.get(
-                    schemaFile,  v + ":  " + getExceptionMessage(e));
-            reportError(failOnError, e, message);
-            continue;
-          }
-
           // Register it with the schema.  We will allow duplicates, with the
           // later definition overriding any earlier definition, but we want
           // to trap them and log a warning.
           try
           {
-            schema.registerNameForm(nf, failOnError);
+            schema.registerNameForm(v.toString(), schemaFile, failOnError);
           }
           catch (DirectoryException de)
           {
@@ -763,7 +734,7 @@
 
             try
             {
-              schema.registerNameForm(nf, true);
+              schema.registerNameForm(v.toString(), schemaFile, true);
             }
             catch (Exception e)
             {
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/extensions/GoverningStructureRuleVirtualAttributeProvider.java b/opendj-server-legacy/src/main/java/org/opends/server/extensions/GoverningStructureRuleVirtualAttributeProvider.java
index d45e05a..5e32702 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/extensions/GoverningStructureRuleVirtualAttributeProvider.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/extensions/GoverningStructureRuleVirtualAttributeProvider.java
@@ -16,6 +16,7 @@
  */
 package org.opends.server.extensions;
 
+import java.util.Collection;
 import java.util.List;
 
 import org.forgerock.i18n.LocalizableMessage;
@@ -25,6 +26,7 @@
 import org.forgerock.opendj.ldap.RDN;
 import org.forgerock.opendj.ldap.ResultCode;
 import org.forgerock.opendj.ldap.schema.AttributeType;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.server.config.server.GoverningStructureRuleVirtualAttributeCfg;
 import org.opends.server.api.VirtualAttributeProvider;
 import org.opends.server.core.DirectoryServer;
@@ -34,7 +36,6 @@
 import org.opends.server.types.Attributes;
 import org.opends.server.types.DITStructureRule;
 import org.opends.server.types.Entry;
-import org.opends.server.types.NameForm;
 import org.forgerock.opendj.ldap.schema.ObjectClass;
 import org.opends.server.types.VirtualAttributeRule;
 
@@ -176,7 +177,7 @@
     if (oc == null) {
       return null;
     }
-    List<NameForm> listForms = DirectoryServer.getNameForm(oc);
+    Collection<NameForm> listForms = DirectoryServer.getNameForm(oc);
     NameForm nameForm = null;
     DITStructureRule ditRule = null;
     //We iterate over all the nameforms while creating the entry and
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/schema/DITStructureRuleSyntax.java b/opendj-server-legacy/src/main/java/org/opends/server/schema/DITStructureRuleSyntax.java
index 36b94ad..ecf7fa5 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/schema/DITStructureRuleSyntax.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/schema/DITStructureRuleSyntax.java
@@ -27,13 +27,13 @@
 import org.forgerock.i18n.LocalizableMessage;
 import org.forgerock.opendj.ldap.ByteSequence;
 import org.forgerock.opendj.ldap.ResultCode;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.ldap.schema.Syntax;
 import org.forgerock.opendj.server.config.server.AttributeSyntaxCfg;
 import org.opends.server.api.AttributeSyntax;
 import org.opends.server.core.DirectoryServer;
 import org.opends.server.types.DITStructureRule;
 import org.opends.server.types.DirectoryException;
-import org.opends.server.types.NameForm;
 import org.opends.server.types.Schema;
 
 /**
@@ -318,12 +318,14 @@
         pos = readWOID(lowerStr, woidBuffer, pos);
 
         nameFormGiven = true;
-        nameForm = schema.getNameForm(woidBuffer.toString());
-        if (nameForm == null && ! allowUnknownElements)
+
+        String nameOrOid = woidBuffer.toString();
+        if (!schema.hasNameForm(nameOrOid) && !allowUnknownElements)
         {
           throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
               ERR_ATTR_SYNTAX_DSR_UNKNOWN_NAME_FORM.get(valueStr, woidBuffer));
         }
+        nameForm = schema.getNameForm(nameOrOid);
       }
       else if (lowerTokenName.equals("sup"))
       {
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/schema/NameFormSyntax.java b/opendj-server-legacy/src/main/java/org/opends/server/schema/NameFormSyntax.java
index 67743af..6194c15 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/schema/NameFormSyntax.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/schema/NameFormSyntax.java
@@ -16,29 +16,11 @@
  */
 package org.opends.server.schema;
 
-import static org.opends.messages.SchemaMessages.*;
 import static org.opends.server.schema.SchemaConstants.*;
-import static org.opends.server.util.StaticUtils.*;
 
-import java.util.LinkedHashMap;
-import java.util.LinkedHashSet;
-import java.util.LinkedList;
-import java.util.List;
-
-import org.forgerock.i18n.LocalizableMessage;
-import org.forgerock.i18n.LocalizableMessageDescriptor.Arg2;
-import org.forgerock.opendj.ldap.ByteSequence;
-import org.forgerock.opendj.ldap.ResultCode;
-import org.forgerock.opendj.ldap.schema.AttributeType;
-import org.forgerock.opendj.ldap.schema.ObjectClass;
-import org.forgerock.opendj.ldap.schema.ObjectClassType;
 import org.forgerock.opendj.ldap.schema.Syntax;
 import org.forgerock.opendj.server.config.server.AttributeSyntaxCfg;
 import org.opends.server.api.AttributeSyntax;
-import org.opends.server.core.DirectoryServer;
-import org.opends.server.types.DirectoryException;
-import org.opends.server.types.NameForm;
-import org.opends.server.types.Schema;
 
 /**
  * This class implements the name form description syntax, which is used to
@@ -87,953 +69,5 @@
   {
     return SYNTAX_NAME_FORM_DESCRIPTION;
   }
-
-  /**
-   * Decodes the contents of the provided ASN.1 octet string as a name form
-   * definition according to the rules of this syntax.  Note that the provided
-   * octet string value does not need to be normalized (and in fact, it should
-   * not be in order to allow the desired capitalization to be preserved).
-   *
-   * @param  value                 The ASN.1 octet string containing the value
-   *                               to decode (it does not need to be
-   *                               normalized).
-   * @param  schema                The schema to use to resolve references to
-   *                               other schema elements.
-   * @param  allowUnknownElements  Indicates whether to allow values that
-   *                               reference a structural objectclass and/or
-   *                               required or optional attribute types which
-   *                               are not defined in the server schema.  This
-   *                               should only be true when called by
-   *                               {@code valueIsAcceptable}.
-   *
-   * @return  The decoded name form definition.
-   *
-   * @throws  DirectoryException  If the provided value cannot be decoded as an
-   *                              name form definition.
-   */
-  public static NameForm decodeNameForm(ByteSequence value, Schema schema,
-                                        boolean allowUnknownElements)
-         throws DirectoryException
-  {
-    // Get string representations of the provided value using the provided form
-    // and with all lowercase characters.
-    String valueStr = value.toString();
-    String lowerStr = toLowerCase(valueStr);
-
-
-    // We'll do this a character at a time.  First, skip over any leading whitespace.
-    int pos    = 0;
-    int length = valueStr.length();
-    while (pos < length && valueStr.charAt(pos) == ' ')
-    {
-      pos++;
-    }
-
-    if (pos >= length)
-    {
-      // This means that the value was empty or contained only whitespace.  That
-      // is illegal.
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_EMPTY_VALUE.get();
-      throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // The next character must be an open parenthesis.  If it is not, then that
-    // is an error.
-    char c = valueStr.charAt(pos++);
-    if (c != '(')
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_EXPECTED_OPEN_PARENTHESIS.get(
-          valueStr, pos-1, c);
-      throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Skip over any spaces immediately following the opening parenthesis.
-    while (pos < length && ((c = valueStr.charAt(pos)) == ' '))
-    {
-      pos++;
-    }
-
-    if (pos >= length)
-    {
-      // This means that the end of the value was reached before we could find
-      // the OID.  Ths is illegal.
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // The next set of characters must be the OID.  Strictly speaking, this
-    // should only be a numeric OID, but we'll also allow for the
-    // "ocname-oid" case as well.  Look at the first character to figure out
-    // which we will be using.
-    int oidStartPos = pos;
-    if (isDigit(c))
-    {
-      // This must be a numeric OID.  In that case, we will accept only digits
-      // and periods, but not consecutive periods.
-      boolean lastWasPeriod = false;
-      while (pos < length && ((c = valueStr.charAt(pos++)) != ' '))
-      {
-        if (c == '.')
-        {
-          if (lastWasPeriod)
-          {
-            LocalizableMessage message =
-                ERR_ATTR_SYNTAX_NAME_FORM_DOUBLE_PERIOD_IN_NUMERIC_OID.
-                  get(valueStr, pos-1);
-            throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
-                                         message);
-          }
-          else
-          {
-            lastWasPeriod = true;
-          }
-        }
-        else if (! isDigit(c))
-        {
-          // This must have been an illegal character.
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR_IN_NUMERIC_OID.
-                get(valueStr, c, pos-1);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
-                                       message);
-        }
-        else
-        {
-          lastWasPeriod = false;
-        }
-      }
-    }
-    else
-    {
-      // This must be a "fake" OID.  In this case, we will only accept
-      // alphabetic characters, numeric digits, and the hyphen.
-      while (pos < length && ((c = valueStr.charAt(pos++)) != ' '))
-      {
-        if (isAlpha(c) || isDigit(c) || c == '-' ||
-            (c == '_' && DirectoryServer.allowAttributeNameExceptions()))
-        {
-          // This is fine.  It is an acceptable character.
-        }
-        else
-        {
-          // This must have been an illegal character.
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR_IN_STRING_OID.
-                get(valueStr, c, pos-1);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
-                                       message);
-        }
-      }
-    }
-
-
-    // If we're at the end of the value, then it isn't a valid name form
-    // description.  Otherwise, parse out the OID.
-    String oid;
-    if (pos >= length)
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-    oid = lowerStr.substring(oidStartPos, pos-1);
-
-
-    // Skip over the space(s) after the OID.
-    while (pos < length && ((c = valueStr.charAt(pos)) == ' '))
-    {
-      pos++;
-    }
-
-    if (pos >= length)
-    {
-      // This means that the end of the value was reached before we could find
-      // the OID.  Ths is illegal.
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // At this point, we should have a pretty specific syntax that describes
-    // what may come next, but some of the components are optional and it would
-    // be pretty easy to put something in the wrong order, so we will be very
-    // flexible about what we can accept.  Just look at the next token, figure
-    // out what it is and how to treat what comes after it, then repeat until
-    // we get to the end of the value.  But before we start, set default values
-    // for everything else we might need to know.
-    LinkedHashMap<String,String> names = new LinkedHashMap<>();
-    String description = null;
-    boolean isObsolete = false;
-    ObjectClass structuralClass = null;
-    LinkedHashSet<AttributeType> requiredAttributes = new LinkedHashSet<>();
-    LinkedHashSet<AttributeType> optionalAttributes = new LinkedHashSet<>();
-    LinkedHashMap<String,List<String>> extraProperties = new LinkedHashMap<>();
-
-
-    while (true)
-    {
-      StringBuilder tokenNameBuffer = new StringBuilder();
-      pos = readTokenName(valueStr, tokenNameBuffer, pos);
-      String tokenName = tokenNameBuffer.toString();
-      String lowerTokenName = toLowerCase(tokenName);
-      if (tokenName.equals(")"))
-      {
-        // We must be at the end of the value.  If not, then that's a problem.
-        if (pos < length)
-        {
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_UNEXPECTED_CLOSE_PARENTHESIS.
-                get(valueStr, pos-1);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
-                                       message);
-        }
-
-        break;
-      }
-      else if (lowerTokenName.equals("name"))
-      {
-        // This specifies the set of names for the name form.  It may be a
-        // single name in single quotes, or it may be an open parenthesis
-        // followed by one or more names in single quotes separated by spaces.
-        c = valueStr.charAt(pos++);
-        if (c == '\'')
-        {
-          StringBuilder userBuffer  = new StringBuilder();
-          StringBuilder lowerBuffer = new StringBuilder();
-          pos = readQuotedString(valueStr, lowerStr, userBuffer, lowerBuffer, pos-1);
-          names.put(lowerBuffer.toString(), userBuffer.toString());
-        }
-        else if (c == '(')
-        {
-          StringBuilder userBuffer  = new StringBuilder();
-          StringBuilder lowerBuffer = new StringBuilder();
-          pos = readQuotedString(valueStr, lowerStr, userBuffer, lowerBuffer,
-                                 pos);
-          names.put(lowerBuffer.toString(), userBuffer.toString());
-
-
-          while (true)
-          {
-            if (valueStr.charAt(pos) == ')')
-            {
-              // Skip over any spaces after the parenthesis.
-              pos++;
-              while (pos < length && ((c = valueStr.charAt(pos)) == ' '))
-              {
-                pos++;
-              }
-
-              break;
-            }
-            else
-            {
-              userBuffer  = new StringBuilder();
-              lowerBuffer = new StringBuilder();
-
-              pos = readQuotedString(valueStr, lowerStr, userBuffer,
-                                     lowerBuffer, pos);
-              names.put(lowerBuffer.toString(), userBuffer.toString());
-            }
-          }
-        }
-        else
-        {
-          // This is an illegal character.
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR.get(valueStr, c, pos-1);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-        }
-      }
-      else if (lowerTokenName.equals("desc"))
-      {
-        // This specifies the description for the name form.  It is an
-        // arbitrary string of characters enclosed in single quotes.
-        StringBuilder descriptionBuffer = new StringBuilder();
-        pos = readQuotedString(valueStr, descriptionBuffer, pos);
-        description = descriptionBuffer.toString();
-      }
-      else if (lowerTokenName.equals("obsolete"))
-      {
-        // This indicates whether the name form should be considered obsolete.
-        // We do not need to do any more parsing for this token.
-        isObsolete = true;
-      }
-      else if (lowerTokenName.equals("oc"))
-      {
-        // This specifies the name or OID of the structural objectclass for this
-        // name form.
-        StringBuilder woidBuffer = new StringBuilder();
-        pos = readWOID(lowerStr, woidBuffer, pos);
-        structuralClass = schema.getObjectClass(woidBuffer.toString());
-        if (structuralClass.isPlaceHolder())
-        {
-          // This is bad because we don't know what the structural objectclass is.
-          if (!allowUnknownElements)
-          {
-            LocalizableMessage message =
-                ERR_ATTR_SYNTAX_NAME_FORM_UNKNOWN_STRUCTURAL_CLASS.get(oid, woidBuffer);
-            throw new DirectoryException(ResultCode.CONSTRAINT_VIOLATION, message);
-          }
-        }
-        else if (structuralClass.getObjectClassType() !=
-                 ObjectClassType.STRUCTURAL)
-        {
-          // This is bad because the associated structural class type is not
-          // structural.
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_STRUCTURAL_CLASS_NOT_STRUCTURAL.
-                get(oid, woidBuffer,
-                    structuralClass.getNameOrOID(),
-                    structuralClass.getObjectClassType());
-          throw new DirectoryException(
-                  ResultCode.CONSTRAINT_VIOLATION, message);
-        }
-      }
-      else if (lowerTokenName.equals("must"))
-      {
-        LinkedList<AttributeType> attrs = new LinkedList<>();
-
-        // This specifies the set of required attributes for the name from.
-        // It may be a single name or OID (not in quotes), or it may be an
-        // open parenthesis followed by one or more names separated by spaces
-        // and the dollar sign character, followed by a closing parenthesis.
-        c = valueStr.charAt(pos++);
-        if (c == '(')
-        {
-          while (true)
-          {
-            StringBuilder woidBuffer = new StringBuilder();
-            pos = readWOID(lowerStr, woidBuffer, pos);
-            attrs.add(getAttributeType(schema, allowUnknownElements, oid, woidBuffer,
-                ERR_ATTR_SYNTAX_NAME_FORM_UNKNOWN_REQUIRED_ATTR));
-
-            // The next character must be either a dollar sign or a closing parenthesis.
-            c = valueStr.charAt(pos++);
-            if (c == ')')
-            {
-              // This denotes the end of the list.
-              break;
-            }
-            else if (c != '$')
-            {
-              LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR.get(
-                  valueStr, c, pos-1);
-              throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
-                                           message);
-            }
-          }
-        }
-        else
-        {
-          StringBuilder woidBuffer = new StringBuilder();
-          pos = readWOID(lowerStr, woidBuffer, pos-1);
-          attrs.add(getAttributeType(schema, allowUnknownElements, oid, woidBuffer,
-              ERR_ATTR_SYNTAX_NAME_FORM_UNKNOWN_REQUIRED_ATTR));
-        }
-
-        requiredAttributes.addAll(attrs);
-      }
-      else if (lowerTokenName.equals("may"))
-      {
-        LinkedList<AttributeType> attrs = new LinkedList<>();
-
-        // This specifies the set of optional attributes for the name form.  It
-        // may be a single name or OID (not in quotes), or it may be an open
-        // parenthesis followed by one or more names separated by spaces and the
-        // dollar sign character, followed by a closing parenthesis.
-        c = valueStr.charAt(pos++);
-        if (c == '(')
-        {
-          while (true)
-          {
-            StringBuilder woidBuffer = new StringBuilder();
-            pos = readWOID(lowerStr, woidBuffer, pos);
-            attrs.add(getAttributeType(schema, allowUnknownElements, oid, woidBuffer,
-                ERR_ATTR_SYNTAX_NAME_FORM_UNKNOWN_OPTIONAL_ATTR));
-
-            // The next character must be either a dollar sign or a closing parenthesis.
-            c = valueStr.charAt(pos++);
-            if (c == ')')
-            {
-              // This denotes the end of the list.
-              break;
-            }
-            else if (c != '$')
-            {
-              LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR.get(
-                  valueStr, c, pos-1);
-              throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-            }
-          }
-        }
-        else
-        {
-          StringBuilder woidBuffer = new StringBuilder();
-          pos = readWOID(lowerStr, woidBuffer, pos-1);
-          attrs.add(getAttributeType(schema, allowUnknownElements, oid, woidBuffer,
-              ERR_ATTR_SYNTAX_NAME_FORM_UNKNOWN_OPTIONAL_ATTR));
-        }
-
-        optionalAttributes.addAll(attrs);
-      }
-      else
-      {
-        // This must be a non-standard property and it must be followed by
-        // either a single value in single quotes or an open parenthesis
-        // followed by one or more values in single quotes separated by spaces
-        // followed by a close parenthesis.
-        LinkedList<String> valueList = new LinkedList<>();
-        pos = readExtraParameterValues(valueStr, valueList, pos);
-        extraProperties.put(tokenName, valueList);
-      }
-    }
-
-
-    // Make sure that a structural class was specified.  If not, then it cannot
-    // be valid.
-    if (structuralClass == null)
-    {
-      LocalizableMessage message =
-          ERR_ATTR_SYNTAX_NAME_FORM_NO_STRUCTURAL_CLASS.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    return new NameForm(value.toString(), names, oid, description,
-                        isObsolete, structuralClass, requiredAttributes,
-                        optionalAttributes, extraProperties);
-  }
-
-  private static AttributeType getAttributeType(Schema schema, boolean allowUnknownElements, String oid,
-      StringBuilder woidBuffer, Arg2<Object, Object> msg) throws DirectoryException
-  {
-    String woidString = woidBuffer.toString();
-    AttributeType attr = schema.getAttributeType(woidString);
-    if (attr.isPlaceHolder() && !allowUnknownElements)
-    {
-      throw new DirectoryException(ResultCode.CONSTRAINT_VIOLATION, msg.get(oid, woidString));
-    }
-    return attr;
-  }
-
-  /**
-   * Reads the next token name from the name form definition, skipping over any
-   * leading or trailing spaces, and appends it to the provided buffer.
-   *
-   * @param  valueStr   The string representation of the name form definition.
-   * @param  tokenName  The buffer into which the token name will be written.
-   * @param  startPos   The position in the provided string at which to start
-   *                    reading the token name.
-   *
-   * @return  The position of the first character that is not part of the token
-   *          name or one of the trailing spaces after it.
-   *
-   * @throws  DirectoryException  If a problem is encountered while reading the
-   *                              token name.
-   */
-  private static int readTokenName(String valueStr, StringBuilder tokenName,
-                                   int startPos)
-          throws DirectoryException
-  {
-    // Skip over any spaces at the beginning of the value.
-    char c = '\u0000';
-    int  length = valueStr.length();
-    while (startPos < length && ((c = valueStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-    if (startPos >= length)
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Read until we find the next space.
-    while (startPos < length && ((c = valueStr.charAt(startPos++)) != ' '))
-    {
-      tokenName.append(c);
-    }
-
-
-    // Skip over any trailing spaces after the value.
-    while (startPos < length && ((c = valueStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-
-    // Return the position of the first non-space character after the token.
-    return startPos;
-  }
-
-  /**
-   * Reads the value of a string enclosed in single quotes, skipping over the
-   * quotes and any leading or trailing spaces, and appending the string to the
-   * provided buffer.
-   *
-   * @param  valueStr     The user-provided representation of the name form
-   *                      definition.
-   * @param  valueBuffer  The buffer into which the user-provided representation
-   *                      of the value will be placed.
-   * @param  startPos     The position in the provided string at which to start
-   *                      reading the quoted string.
-   *
-   * @return  The position of the first character that is not part of the quoted
-   *          string or one of the trailing spaces after it.
-   *
-   * @throws  DirectoryException  If a problem is encountered while reading the
-   *                              quoted string.
-   */
-  private static int readQuotedString(String valueStr,
-                                      StringBuilder valueBuffer, int startPos)
-          throws DirectoryException
-  {
-    // Skip over any spaces at the beginning of the value.
-    char c = '\u0000';
-    int  length = valueStr.length();
-    while (startPos < length && ((c = valueStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-    if (startPos >= length)
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // The next character must be a single quote.
-    if (c != '\'')
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_EXPECTED_QUOTE_AT_POS.get(
-          valueStr, startPos, c);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Read until we find the closing quote.
-    startPos++;
-    while (startPos < length && ((c = valueStr.charAt(startPos)) != '\''))
-    {
-      valueBuffer.append(c);
-      startPos++;
-    }
-
-
-    // Skip over any trailing spaces after the value.
-    startPos++;
-    while (startPos < length && ((c = valueStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-
-    // If we're at the end of the value, then that's illegal.
-    if (startPos >= length)
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Return the position of the first non-space character after the token.
-    return startPos;
-  }
-
-  /**
-   * Reads the value of a string enclosed in single quotes, skipping over the
-   * quotes and any leading or trailing spaces, and appending the string to the
-   * provided buffer.
-   *
-   * @param  valueStr     The user-provided representation of the name form
-   *                      definition.
-   * @param  lowerStr     The all-lowercase representation of the name form
-   *                      definition.
-   * @param  userBuffer   The buffer into which the user-provided representation
-   *                      of the value will be placed.
-   * @param  lowerBuffer  The buffer into which the all-lowercase representation
-   *                      of the value will be placed.
-   * @param  startPos     The position in the provided string at which to start
-   *                      reading the quoted string.
-   *
-   * @return  The position of the first character that is not part of the quoted
-   *          string or one of the trailing spaces after it.
-   *
-   * @throws  DirectoryException  If a problem is encountered while reading the
-   *                              quoted string.
-   */
-  private static int readQuotedString(String valueStr, String lowerStr,
-                                      StringBuilder userBuffer,
-                                      StringBuilder lowerBuffer, int startPos)
-          throws DirectoryException
-  {
-    // Skip over any spaces at the beginning of the value.
-    char c = '\u0000';
-    int  length = lowerStr.length();
-    while (startPos < length && ((c = lowerStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-    if (startPos >= length)
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(lowerStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // The next character must be a single quote.
-    if (c != '\'')
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_EXPECTED_QUOTE_AT_POS.get(
-          valueStr, startPos, c);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Read until we find the closing quote.
-    startPos++;
-    while (startPos < length && ((c = lowerStr.charAt(startPos)) != '\''))
-    {
-      lowerBuffer.append(c);
-      userBuffer.append(valueStr.charAt(startPos));
-      startPos++;
-    }
-
-
-    // Skip over any trailing spaces after the value.
-    startPos++;
-    while (startPos < length && ((c = lowerStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-
-    // If we're at the end of the value, then that's illegal.
-    if (startPos >= length)
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(lowerStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Return the position of the first non-space character after the token.
-    return startPos;
-  }
-
-  /**
-   * Reads the attribute type description or numeric OID from the provided
-   * string, skipping over any leading or trailing spaces, and appending the
-   * value to the provided buffer.
-   *
-   * @param  lowerStr    The string from which the name or OID is to be read.
-   * @param  woidBuffer  The buffer into which the name or OID should be
-   *                     appended.
-   * @param  startPos    The position at which to start reading.
-   *
-   * @return  The position of the first character after the name or OID that is
-   *          not a space.
-   *
-   * @throws  DirectoryException  If a problem is encountered while reading the
-   *                              name or OID.
-   */
-  private static int readWOID(String lowerStr, StringBuilder woidBuffer,
-                              int startPos)
-          throws DirectoryException
-  {
-    // Skip over any spaces at the beginning of the value.
-    char c = '\u0000';
-    int  length = lowerStr.length();
-    while (startPos < length && ((c = lowerStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-    if (startPos >= length)
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(lowerStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // The next character must be either numeric (for an OID) or alphabetic (for
-    // an attribute type description).
-    if (isDigit(c))
-    {
-      // This must be a numeric OID.  In that case, we will accept only digits
-      // and periods, but not consecutive periods.
-      boolean lastWasPeriod = false;
-      while (startPos < length && ((c = lowerStr.charAt(startPos++)) != ' '))
-      {
-        if (c == '.')
-        {
-          if (lastWasPeriod)
-          {
-            LocalizableMessage message =
-                ERR_ATTR_SYNTAX_NAME_FORM_DOUBLE_PERIOD_IN_NUMERIC_OID.
-                  get(lowerStr, startPos-1);
-            throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-          }
-          woidBuffer.append(c);
-          lastWasPeriod = true;
-        }
-        else if (! isDigit(c))
-        {
-          // Technically, this must be an illegal character.  However, it is
-          // possible that someone just got sloppy and did not include a space
-          // between the name/OID and a closing parenthesis.  In that case,
-          // we'll assume it's the end of the value.  What's more, we'll have
-          // to prematurely return to nasty side effects from stripping off
-          // additional characters.
-          if (c == ')')
-          {
-            return startPos-1;
-          }
-
-          // This must have been an illegal character.
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR_IN_NUMERIC_OID.
-                get(lowerStr, c, startPos-1);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-        }
-        else
-        {
-          woidBuffer.append(c);
-          lastWasPeriod = false;
-        }
-      }
-    }
-    else if (isAlpha(c))
-    {
-      // This must be an attribute type description.  In this case, we will only
-      // accept alphabetic characters, numeric digits, and the hyphen.
-      while (startPos < length && ((c = lowerStr.charAt(startPos++)) != ' '))
-      {
-        if (isAlpha(c) || isDigit(c) || c == '-' ||
-            (c == '_' && DirectoryServer.allowAttributeNameExceptions()))
-        {
-          woidBuffer.append(c);
-        }
-        else
-        {
-          // Technically, this must be an illegal character.  However, it is
-          // possible that someone just got sloppy and did not include a space
-          // between the name/OID and a closing parenthesis.  In that case,
-          // we'll assume it's the end of the value.  What's more, we'll have
-          // to prematurely return to nasty side effects from stripping off
-          // additional characters.
-          if (c == ')')
-          {
-            return startPos-1;
-          }
-
-          // This must have been an illegal character.
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR_IN_STRING_OID.
-                get(lowerStr, c, startPos-1);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-        }
-      }
-    }
-    else
-    {
-      LocalizableMessage message =
-          ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR.get(lowerStr, c, startPos);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Skip over any trailing spaces after the value.
-    while (startPos < length && ((c = lowerStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-
-    // If we're at the end of the value, then that's illegal.
-    if (startPos >= length)
-    {
-      LocalizableMessage message = ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(lowerStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Return the position of the first non-space character after the token.
-    return startPos;
-  }
-
-  /**
-   * Reads the value for an "extra" parameter.  It will handle a single unquoted
-   * word (which is technically illegal, but we'll allow it), a single quoted
-   * string, or an open parenthesis followed by a space-delimited set of quoted
-   * strings or unquoted words followed by a close parenthesis.
-   *
-   * @param  valueStr   The string containing the information to be read.
-   * @param  valueList  The list of "extra" parameter values read so far.
-   * @param  startPos   The position in the value string at which to start
-   *                    reading.
-   *
-   * @return  The "extra" parameter value that was read.
-   *
-   * @throws  DirectoryException  If a problem occurs while attempting to read
-   *                              the value.
-   */
-  private static int readExtraParameterValues(String valueStr,
-                        List<String> valueList, int startPos)
-          throws DirectoryException
-  {
-    // Skip over any leading spaces.
-    int length = valueStr.length();
-    char c = '\u0000';
-    while (startPos < length && ((c = valueStr.charAt(startPos)) == ' '))
-    {
-      startPos++;
-    }
-
-    if (startPos >= length)
-    {
-      LocalizableMessage message =
-          ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-
-    // Look at the next character.  If it is a quote, then parse until the next
-    // quote and end.  If it is an open parenthesis, then parse individual
-    // values until the close parenthesis and end.  Otherwise, parse until the
-    // next space and end.
-    if (c == '\'')
-    {
-      // Parse until the closing quote.
-      StringBuilder valueBuffer = new StringBuilder();
-      startPos++;
-      while (startPos < length && ((c = valueStr.charAt(startPos)) != '\''))
-      {
-        valueBuffer.append(c);
-        startPos++;
-      }
-      startPos++;
-      valueList.add(valueBuffer.toString());
-    }
-    else if (c == '(')
-    {
-      startPos++;
-      // We're expecting a list of values. Quoted, space separated.
-      while (true)
-      {
-        // Skip over any leading spaces;
-        while (startPos < length && ((c = valueStr.charAt(startPos)) == ' '))
-        {
-          startPos++;
-        }
-
-        if (startPos >= length)
-        {
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
-                                       message);
-        }
-
-        if (c == ')')
-        {
-          // This is the end of the list.
-          startPos++;
-          break;
-        }
-        else if (c == '(')
-        {
-          // This is an illegal character.
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_ILLEGAL_CHAR.get(
-                      valueStr, c, startPos);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
-                                       message);
-        }
-        else if (c == '\'')
-        {
-          // We have a quoted string
-          StringBuilder valueBuffer = new StringBuilder();
-          startPos++;
-          while (startPos < length && ((c = valueStr.charAt(startPos)) != '\''))
-          {
-            valueBuffer.append(c);
-            startPos++;
-          }
-
-          valueList.add(valueBuffer.toString());
-          startPos++;
-        }
-        else
-        {
-          //Consider unquoted string
-          StringBuilder valueBuffer = new StringBuilder();
-          while (startPos < length && ((c = valueStr.charAt(startPos)) != ' '))
-          {
-            valueBuffer.append(c);
-            startPos++;
-          }
-
-          valueList.add(valueBuffer.toString());
-        }
-
-        if (startPos >= length)
-        {
-          LocalizableMessage message =
-              ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-          throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
-                                       message);
-        }
-      }
-    }
-    else
-    {
-      // Parse until the next space.
-      StringBuilder valueBuffer = new StringBuilder();
-      while (startPos < length && ((c = valueStr.charAt(startPos)) != ' '))
-      {
-        valueBuffer.append(c);
-        startPos++;
-      }
-
-      valueList.add(valueBuffer.toString());
-    }
-
-    // Skip over any trailing spaces.
-    while (startPos < length && valueStr.charAt(startPos) == ' ')
-    {
-      startPos++;
-    }
-
-    if (startPos >= length)
-    {
-      LocalizableMessage message =
-          ERR_ATTR_SYNTAX_NAME_FORM_TRUNCATED_VALUE.get(valueStr);
-      throw new DirectoryException(
-              ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
-    }
-
-    return startPos;
-  }
 }
 
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/types/DITStructureRule.java b/opendj-server-legacy/src/main/java/org/opends/server/types/DITStructureRule.java
index 676ddfa..f4c7609 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/types/DITStructureRule.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/types/DITStructureRule.java
@@ -23,6 +23,7 @@
 import java.util.Set;
 
 import org.forgerock.i18n.slf4j.LocalizedLogger;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.ldap.schema.ObjectClass;
 import org.forgerock.opendj.ldap.schema.SchemaElement;
 
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/types/DirectoryConfig.java b/opendj-server-legacy/src/main/java/org/opends/server/types/DirectoryConfig.java
index 0785ab9..450c24c 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/types/DirectoryConfig.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/types/DirectoryConfig.java
@@ -17,7 +17,6 @@
 package org.opends.server.types;
 
 import java.util.Collection;
-import java.util.List;
 import java.util.Set;
 
 import org.forgerock.i18n.LocalizableMessage;
@@ -26,6 +25,7 @@
 import org.forgerock.opendj.ldap.schema.AttributeType;
 import org.forgerock.opendj.ldap.schema.MatchingRule;
 import org.forgerock.opendj.ldap.schema.MatchingRuleUse;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.ldap.schema.ObjectClass;
 import org.forgerock.opendj.ldap.schema.Syntax;
 import org.opends.server.api.AlertGenerator;
@@ -397,36 +397,21 @@
   }
 
   /**
-   * Retrieves the list of name forms associated with the specified
+   * Retrieves the collection of name forms associated with the specified
    * structural objectclass.
    *
    * @param  objectClass  The structural objectclass for which to
    *                      retrieve the  associated name form.
    *
-   * @return  The list of requested name forms, or <CODE>null</CODE>
+   * @return  The collection of requested name forms, or <CODE>null</CODE>
    *           if no such name form is defined in the schema.
    */
-  public static List<NameForm> getNameForm(ObjectClass objectClass)
+  public static Collection<NameForm> getNameForm(ObjectClass objectClass)
   {
     return DirectoryServer.getNameForm(objectClass);
   }
 
   /**
-   * Retrieves the name form associated with the specified name or
-   * OID.
-   *
-   * @param  lowerName  The name or OID of the name form to retrieve,
-   *                    formatted in all lowercase characters.
-   *
-   * @return  The requested name form, or <CODE>null</CODE> if no such
-   *          name form is defined in the schema.
-   */
-  public static NameForm getNameForm(String lowerName)
-  {
-    return DirectoryServer.getNameForm(lowerName);
-  }
-
-  /**
    * Registers the provided alert generator with the Directory Server.
    *
    * @param  alertGenerator  The alert generator to register.
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/types/Entry.java b/opendj-server-legacy/src/main/java/org/opends/server/types/Entry.java
index 0f137ba..a856c6d 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/types/Entry.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/types/Entry.java
@@ -47,6 +47,7 @@
 import org.forgerock.opendj.ldap.SearchScope;
 import org.forgerock.opendj.ldap.schema.AttributeType;
 import org.forgerock.opendj.ldap.schema.MatchingRule;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.ldap.schema.ObjectClass;
 import org.forgerock.opendj.ldap.schema.ObjectClassType;
 import org.opends.server.api.CompressedSchema;
@@ -1614,9 +1615,10 @@
          * DITStructureRules corresponding to other non-acceptable
          * nameforms are not applied.
          */
-        List<NameForm> listForms = DirectoryServer.getNameForm(structuralClass);
-        if(listForms != null)
+        Collection<NameForm> forms = DirectoryServer.getNameForm(structuralClass);
+        if (forms != null)
         {
+          List<NameForm> listForms = new ArrayList<NameForm>(forms);
           boolean matchFound = false;
           boolean obsolete = true;
           for(int index=0; index <listForms.size(); index++)
@@ -2158,8 +2160,7 @@
         }
         else
         {
-          List<NameForm> allNFs =
-               DirectoryServer.getNameForm(parentStructuralClass);
+          Collection<NameForm> allNFs = DirectoryServer.getNameForm(parentStructuralClass);
           if(allNFs != null)
           {
             for(NameForm parentNF : allNFs)
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/types/NameForm.java b/opendj-server-legacy/src/main/java/org/opends/server/types/NameForm.java
deleted file mode 100644
index 7fc57a6..0000000
--- a/opendj-server-legacy/src/main/java/org/opends/server/types/NameForm.java
+++ /dev/null
@@ -1,468 +0,0 @@
-/*
- * The contents of this file are subject to the terms of the Common Development and
- * Distribution License (the License). You may not use this file except in compliance with the
- * License.
- *
- * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
- * specific language governing permission and limitations under the License.
- *
- * When distributing Covered Software, include this CDDL Header Notice in each file and include
- * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
- * Header, with the fields enclosed by brackets [] replaced by your own identifying
- * information: "Portions Copyright [year] [name of copyright owner]".
- *
- * Copyright 2006-2008 Sun Microsystems, Inc.
- * Portions Copyright 2013-2016 ForgeRock AS.
- */
-package org.opends.server.types;
-
-import org.forgerock.opendj.ldap.schema.AttributeType;
-import org.forgerock.opendj.ldap.schema.ObjectClass;
-import org.forgerock.opendj.ldap.schema.SchemaElement;
-
-import java.util.LinkedHashMap;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-import org.forgerock.i18n.slf4j.LocalizedLogger;
-
-import static org.forgerock.util.Reject.*;
-import static org.opends.server.util.ServerConstants.*;
-
-/**
- * This class defines a data structure for storing and interacting
- * with a name form, which defines the attribute type(s) that must
- * and/or may be used in the RDN of an entry with a given structural
- * objectclass.
- */
-@org.opends.server.types.PublicAPI(
-     stability=org.opends.server.types.StabilityLevel.UNCOMMITTED,
-     mayInstantiate=false,
-     mayExtend=false,
-     mayInvoke=true)
-public final class NameForm implements SchemaElement
-{
-  private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
-
-  /** Indicates whether this name form is declared "obsolete". */
-  private final boolean isObsolete;
-
-  /**
-   * The set of additional name-value pairs associated with this name
-   * form definition.
-   */
-  private final Map<String,List<String>> extraProperties;
-
-  /**
-   * The mapping between the lowercase names and the user-provided
-   * names for this name form.
-   */
-  private final Map<String,String> names;
-
-  /** The reference to the structural objectclass for this name form. */
-  private final ObjectClass structuralClass;
-
-  /** The set of optional attribute types for this name form. */
-  private final Set<AttributeType> optionalAttributes;
-
-  /** The set of required attribute types for this name form. */
-  private final Set<AttributeType> requiredAttributes;
-
-  /** The definition string used to create this name form. */
-  private final String definition;
-
-  /** The description for this name form. */
-  private final String description;
-
-  /** The OID for this name form. */
-  private final String oid;
-
-
-
-  /**
-   * Creates a new name form definition with the provided information.
-   *
-   * @param  definition          The definition string used to create
-   *                             this name form.  It must not be
-   *                             {@code null}.
-   * @param  names               The set of names that may be used to
-   *                             reference this name form.
-   * @param  oid                 The OID for this name form.  It must
-   *                             not be {@code null}.
-   * @param  description         The description for this name form.
-   * @param  isObsolete          Indicates whether this name form is
-   *                             declared "obsolete".
-   * @param  structuralClass     The structural objectclass with which
-   *                             this name form is associated.  It
-   *                             must not be {@code null}.
-   * @param  requiredAttributes  The set of required attribute types
-   *                             for this name form.
-   * @param  optionalAttributes  The set of optional attribute types
-   *                             for this name form.
-   * @param  extraProperties     A set of extra properties for this
-   *                             name form.
-   */
-  public NameForm(String definition, Map<String,String> names,
-                  String oid, String description, boolean isObsolete,
-                  ObjectClass structuralClass,
-                  Set<AttributeType> requiredAttributes,
-                  Set<AttributeType> optionalAttributes,
-                  Map<String,List<String>> extraProperties)
-  {
-    ifNull(definition, oid, structuralClass);
-
-    this.oid             = oid;
-    this.description     = description;
-    this.isObsolete      = isObsolete;
-    this.structuralClass = structuralClass;
-
-    int schemaFilePos = definition.indexOf(SCHEMA_PROPERTY_FILENAME);
-    if (schemaFilePos > 0)
-    {
-      String defStr;
-      try
-      {
-        int firstQuotePos = definition.indexOf('\'', schemaFilePos);
-        int secondQuotePos = definition.indexOf('\'',
-                                                firstQuotePos+1);
-
-        defStr = definition.substring(0, schemaFilePos).trim() + " " +
-                 definition.substring(secondQuotePos+1).trim();
-      }
-      catch (Exception e)
-      {
-        logger.traceException(e);
-
-        defStr = definition;
-      }
-
-      this.definition = defStr;
-    }
-    else
-    {
-      this.definition = definition;
-    }
-
-    if (names == null || names.isEmpty())
-    {
-      this.names = new LinkedHashMap<>(0);
-    }
-    else
-    {
-      this.names = new LinkedHashMap<>(names);
-    }
-
-    if (requiredAttributes == null || requiredAttributes.isEmpty())
-    {
-      this.requiredAttributes = new LinkedHashSet<>(0);
-    }
-    else
-    {
-      this.requiredAttributes = new LinkedHashSet<>(requiredAttributes);
-    }
-
-    if (optionalAttributes == null || optionalAttributes.isEmpty())
-    {
-      this.optionalAttributes = new LinkedHashSet<>(0);
-    }
-    else
-    {
-      this.optionalAttributes = new LinkedHashSet<>(optionalAttributes);
-    }
-
-    if (extraProperties == null || extraProperties.isEmpty())
-    {
-      this.extraProperties = new LinkedHashMap<>(0);
-    }
-    else
-    {
-      this.extraProperties = new LinkedHashMap<>(extraProperties);
-    }
-  }
-
-
-
-  /**
-   * Retrieves the set of names that may be used to reference this
-   * name form.  The returned object will be a mapping between each
-   * name in all lowercase characters and that name in a user-defined
-   * form (which may include mixed capitalization).
-   *
-   * @return  The set of names that may be used to reference this
-   *          name form.
-   */
-  public Map<String,String> getNames()
-  {
-    return names;
-  }
-
-
-
-  /**
-   * Indicates whether the provided lowercase name may be used to
-   * reference this name form.
-   *
-   * @param  lowerName  The name for which to make the determination,
-   *                    in all lowercase characters.
-   *
-   * @return  {@code true} if the provided lowercase name may be used
-   *          to reference this name form, or {@code false} if not.
-   */
-  public boolean hasName(String lowerName)
-  {
-    return names.containsKey(lowerName);
-  }
-
-
-
-  /**
-   * Retrieves the OID for this name form.
-   *
-   * @return  The OID for this name form.
-   */
-  public String getOID()
-  {
-    return oid;
-  }
-
-
-
-  /**
-   * Retrieves the name or OID that should be used to reference this
-   * name form.  If at least one name is defined, then the first will
-   * be returned.  Otherwise, the OID will be returned.
-   *
-   * @return  The name or OID that should be used to reference this
-   *          name form.
-   */
-  public String getNameOrOID()
-  {
-    if (names.isEmpty())
-    {
-      return oid;
-    }
-    else
-    {
-      return names.values().iterator().next();
-    }
-  }
-
-
-
-  /**
-   * Indicates whether the provided lowercase value is equal to the
-   * OID or any of the names that may be used to reference this name
-   * form.
-   *
-   * @param  lowerValue  The value, in all lowercase characters, that
-   *                     may be used to make the determination.
-   *
-   * @return  {@code true} if the provided lowercase value is one of
-   *          the names or the OID of this name form, or {@code false}
-   *          if it is not.
-   */
-  public boolean hasNameOrOID(String lowerValue)
-  {
-    return names.containsKey(lowerValue) || lowerValue.equals(oid);
-  }
-
-
-
-  /**
-   * Retrieves the description for this name form.
-   *
-   * @return  The description for this name form, or {@code true} if
-   *          there is none.
-   */
-  @Override
-  public String getDescription()
-  {
-    return description;
-  }
-
-
-
-  /**
-   * Retrieves the reference to the structural objectclass for this
-   * name form.
-   *
-   * @return  The reference to the structural objectclass for this
-   *          name form.
-   */
-  public ObjectClass getStructuralClass()
-  {
-    return structuralClass;
-  }
-
-
-
-  /**
-   * Retrieves the set of required attributes for this name form.
-   *
-   * @return  The set of required attributes for this name form.
-   */
-  public Set<AttributeType> getRequiredAttributes()
-  {
-    return requiredAttributes;
-  }
-
-
-
-  /**
-   * Indicates whether the provided attribute type is included in the
-   * required attribute list for this name form.
-   *
-   * @param  attributeType  The attribute type for which to make the
-   *                        determination.
-   *
-   * @return  {@code true} if the provided attribute type is required
-   *          by this name form, or {@code false} if not.
-   */
-  public boolean isRequired(AttributeType attributeType)
-  {
-    return requiredAttributes.contains(attributeType);
-  }
-
-
-
-  /**
-   * Retrieves the set of optional attributes for this name form.
-   *
-   * @return  The set of optional attributes for this name form.
-   */
-  public Set<AttributeType> getOptionalAttributes()
-  {
-    return optionalAttributes;
-  }
-
-
-
-  /**
-   * Indicates whether the provided attribute type is included in the
-   * optional attribute list for this name form.
-   *
-   * @param  attributeType  The attribute type for which to make the
-   *                        determination.
-   *
-   * @return  {@code true} if the provided attribute type is optional
-   *          for this name form, or {@code false} if not.
-   */
-  public boolean isOptional(AttributeType attributeType)
-  {
-    return optionalAttributes.contains(attributeType);
-  }
-
-
-
-  /**
-   * Indicates whether the provided attribute type is in the list of
-   * required or optional attributes for this name form.
-   *
-   * @param  attributeType  The attribute type for which to make the
-   *                        determination.
-   *
-   * @return  {@code true} if the provided attribute type is required
-   *          or optional for this name form, or {@code false} if it
-   *          is not.
-   */
-  public boolean isRequiredOrOptional(AttributeType attributeType)
-  {
-    return requiredAttributes.contains(attributeType) ||
-            optionalAttributes.contains(attributeType);
-  }
-
-
-
-  /**
-   * Indicates whether this name form is declared "obsolete".
-   *
-   * @return  {@code true} if this name form is declared
-   *          "obsolete", or {@code false} if it is not.
-   */
-  public boolean isObsolete()
-  {
-    return isObsolete;
-  }
-
-
-
-  /**
-   * Retrieves a mapping between the names of any extra non-standard
-   * properties that may be associated with this name form and the
-   * value for that property.
-   *
-   * @return  A mapping between the names of any extra non-standard
-   *          properties that may be associated with this name form
-   *          and the value for that property.
-   */
-  @Override
-  public Map<String,List<String>> getExtraProperties()
-  {
-    return extraProperties;
-  }
-
-
-
-  /**
-   * Indicates whether the provided object is equal to this name form.
-   * The object will be considered equal if it is a name form with the
-   * same OID as the current name form.
-   *
-   * @param  o  The object for which to make the determination.
-   *
-   * @return  {@code true} if the provided object is equal to this
-   *          name form, or {@code true} if not.
-   */
-  @Override
-  public boolean equals(Object o)
-  {
-    if (this == o)
-    {
-      return true;
-    }
-    if (!(o instanceof NameForm))
-    {
-      return false;
-    }
-    return oid.equals(((NameForm) o).oid);
-  }
-
-
-
-  /**
-   * Retrieves the hash code for this name form.  It will be based on
-   * the sum of the bytes of the OID.
-   *
-   * @return  The hash code for this name form.
-   */
-  @Override
-  public int hashCode()
-  {
-    int oidLength = oid.length();
-    int hashCode  = 0;
-    for (int i=0; i < oidLength; i++)
-    {
-      hashCode += oid.charAt(i);
-    }
-
-    return hashCode;
-  }
-
-
-
-  /**
-   * Retrieves the string representation of this name form in the form
-   * specified in RFC 2252.
-   *
-   * @return  The string representation of this name form in the form
-   *          specified in RFC 2252.
-   */
-  @Override
-  public String toString()
-  {
-    return definition;
-  }
-
-}
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/types/Schema.java b/opendj-server-legacy/src/main/java/org/opends/server/types/Schema.java
index d1abb5f..e8e6ffc 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/types/Schema.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/types/Schema.java
@@ -24,7 +24,6 @@
 import java.io.FilenameFilter;
 import java.io.IOException;
 import java.text.ParseException;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
@@ -53,6 +52,7 @@
 import org.forgerock.opendj.ldap.schema.MatchingRule;
 import org.forgerock.opendj.ldap.schema.MatchingRuleUse;
 import org.forgerock.opendj.ldap.schema.MatchingRuleUse.Builder;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.ldap.schema.ObjectClass;
 import org.forgerock.opendj.ldap.schema.SchemaBuilder;
 import org.forgerock.opendj.ldap.schema.SchemaElement;
@@ -64,7 +64,6 @@
 import org.opends.server.core.SchemaConfigManager;
 import org.opends.server.schema.DITContentRuleSyntax;
 import org.opends.server.schema.DITStructureRuleSyntax;
-import org.opends.server.schema.NameFormSyntax;
 import org.opends.server.util.Base64;
 import org.opends.server.util.ServerConstants;
 import org.opends.server.util.StaticUtils;
@@ -132,19 +131,6 @@
                ditStructureRulesByNameForm;
 
   /**
-   * The set of name forms for this schema, mapped between the structural
-   * objectclass for the definition and the list of name forms.
-   */
-  private ConcurrentHashMap<ObjectClass,List<NameForm>>
-          nameFormsByOC;
-
-  /**
-   * The set of name forms for this schema, mapped between the names/OID and the
-   * name form itself.
-   */
-  private ConcurrentHashMap<String,NameForm> nameFormsByName;
-
-  /**
    * The set of ldap syntax descriptions for this schema, mapped the OID and the
    * ldap syntax description itself.
    */
@@ -192,8 +178,6 @@
     ditContentRules = new ConcurrentHashMap<ObjectClass,DITContentRule>();
     ditStructureRulesByID = new ConcurrentHashMap<Integer,DITStructureRule>();
     ditStructureRulesByNameForm = new ConcurrentHashMap<NameForm,DITStructureRule>();
-    nameFormsByOC = new ConcurrentHashMap<ObjectClass,List<NameForm>>();
-    nameFormsByName = new ConcurrentHashMap<String,NameForm>();
     ldapSyntaxDescriptions = new ConcurrentHashMap<String,LDAPSyntaxDescription>();
     subordinateTypes = new ConcurrentHashMap<AttributeType,List<AttributeType>>();
 
@@ -369,6 +353,36 @@
   }
 
   /**
+   * Parses a name form from its provided definition.
+   *
+   * @param definition
+   *          The definition of the name form
+   * @return the name form
+   * @throws DirectoryException
+   *           If an error occurs
+   */
+  public NameForm parseNameForm(final String definition) throws DirectoryException
+  {
+    try
+    {
+      SchemaBuilder builder = new SchemaBuilder(schemaNG);
+      builder.addNameForm(definition, true);
+      org.forgerock.opendj.ldap.schema.Schema newSchema = builder.toSchema();
+      rejectSchemaWithWarnings(newSchema);
+      return newSchema.getNameForm(parseNameFormOID(definition));
+    }
+    catch (UnknownSchemaElementException e)
+    {
+      LocalizableMessage msg = ERR_NAME_FORM_CANNOT_REGISTER.get(definition);
+      throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, msg, e);
+    }
+    catch (LocalizedIllegalArgumentException e)
+    {
+      throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, e.getMessageObject(), e);
+    }
+  }
+
+  /**
    * Registers a list of attribute types from their provided definitions.
    * <p>
    * This method allows to do only one schema change for multiple definitions,
@@ -572,6 +586,11 @@
     return parseOID(definition, ResultCode.INVALID_ATTRIBUTE_SYNTAX, ERR_PARSING_MATCHING_RULE_USE_OID);
   }
 
+  private String parseNameFormOID(String definition) throws DirectoryException
+  {
+    return parseOID(definition, ResultCode.INVALID_ATTRIBUTE_SYNTAX, ERR_PARSING_NAME_FORM_OID);
+  }
+
   /**
    * Returns the OID from the provided schema element definition, assuming the
    * definition is valid.
@@ -832,7 +851,8 @@
     ObjectClass.Builder b = builder.buildObjectClass(objectClass);
     if (schemaFile != null)
     {
-      b.removeExtraProperty(SCHEMA_PROPERTY_FILENAME).extraProperties(SCHEMA_PROPERTY_FILENAME, schemaFile);
+      b.removeExtraProperty(SCHEMA_PROPERTY_FILENAME)
+       .extraProperties(SCHEMA_PROPERTY_FILENAME, schemaFile);
     }
     if (overwriteExisting)
     {
@@ -1677,36 +1697,15 @@
 
 
   /**
-   * Retrieves the name form definitions for this schema, as a mapping
-   * between the objectclass for the name forms and the name forms
-   * themselves.
+   * Retrieves the name form definitions for this schema.
    *
    * @return  The name form definitions for this schema.
    */
-  public ConcurrentHashMap<ObjectClass,List<NameForm>>
-              getNameFormsByObjectClass()
+  public Collection<NameForm> getNameForms()
   {
-    return nameFormsByOC;
+    return schemaNG.getNameForms();
   }
 
-
-
-  /**
-   * Retrieves the name form definitions for this schema, as a mapping
-   * between the names/OID for the name form and the name form itself.
-   * Each name form may be present multiple times with different names
-   * and its OID.  The contents of the returned mapping must not be
-   * altered.
-   *
-   * @return  The name form definitions for this schema.
-   */
-  public ConcurrentHashMap<String,NameForm> getNameFormsByNameOrOID()
-  {
-    return nameFormsByName;
-  }
-
-
-
   /**
    * Indicates whether this schema definition includes a name form
    * with the specified name or OID.
@@ -1720,7 +1719,7 @@
    */
   public boolean hasNameForm(String lowerName)
   {
-    return nameFormsByName.containsKey(lowerName);
+    return schemaNG.hasNameForm(lowerName);
   }
 
 
@@ -1736,9 +1735,9 @@
    *           name forms are registered with the provided
    *           objectClass.
    */
-  public List<NameForm> getNameForm(ObjectClass objectClass)
+  public Collection<NameForm> getNameForm(ObjectClass objectClass)
   {
-    return nameFormsByOC.get(objectClass);
+    return schemaNG.getNameForms(objectClass);
   }
 
 
@@ -1754,7 +1753,7 @@
    */
   public NameForm getNameForm(String lowerName)
   {
-    return nameFormsByName.get(lowerName);
+    return schemaNG.getNameForm(lowerName);
   }
 
 
@@ -1762,116 +1761,95 @@
   /**
    * Registers the provided name form definition with this schema.
    *
-   * @param  nameForm           The name form definition to register.
-   * @param  overwriteExisting  Indicates whether to overwrite an
-   *                            existing mapping if there are any
-   *                            conflicts (i.e., another name form
-   *                            with the same objectclass).
-   *
-   * @throws  DirectoryException  If a conflict is encountered and the
-   *                              <CODE>overwriteExisting</CODE> flag
-   *                              is set to <CODE>false</CODE>
+   * @param nameForm
+   *          The name form definition to register.
+   * @param schemaFile
+   *          The schema file where this definition belongs, maybe {@code null}
+   * @param overwriteExisting
+   *          Indicates whether to overwrite an existing mapping if there are any conflicts (i.e.,
+   *          another name form with the same objectclass).
+   * @throws DirectoryException
+   *           If a conflict is encountered and the <CODE>overwriteExisting</CODE> flag is set to
+   *           <CODE>false</CODE>
    */
-  public void registerNameForm(NameForm nameForm,
-                               boolean overwriteExisting)
-         throws DirectoryException
+  public void registerNameForm(NameForm nameForm, String schemaFile, boolean overwriteExisting)
+      throws DirectoryException
   {
-    synchronized (nameFormsByOC)
+    exclusiveLock.lock();
+    try
     {
-      ObjectClass objectClass = nameForm.getStructuralClass();
-      List<NameForm> mappedForms = nameFormsByOC.get(objectClass);
-      if (! overwriteExisting)
+      SchemaBuilder builder = new SchemaBuilder(schemaNG);
+      NameForm.Builder formBuilder = builder.buildNameForm(nameForm);
+      if (schemaFile != null)
       {
-        if(mappedForms !=null)
-        {
-          //Iterate over the forms to make sure we aren't adding a
-          //duplicate.
-          for(NameForm nf : mappedForms)
-          {
-            if(nf.equals(nameForm))
-            {
-              LocalizableMessage message = ERR_SCHEMA_CONFLICTING_NAME_FORM_OC.
-                get(nameForm.getNameOrOID(),
-                    objectClass.getNameOrOID(),
-                    nf.getNameOrOID());
-              throw new DirectoryException(
-                           ResultCode.CONSTRAINT_VIOLATION, message);
-            }
-          }
-        }
-
-        String oid = toLowerCase(nameForm.getOID());
-        if (nameFormsByName.containsKey(oid))
-        {
-          NameForm conflictingNameForm = nameFormsByName.get(oid);
-
-          LocalizableMessage message = ERR_SCHEMA_CONFLICTING_NAME_FORM_OID.
-              get(nameForm.getNameOrOID(), oid,
-                  conflictingNameForm.getNameOrOID());
-          throw new DirectoryException(
-                         ResultCode.CONSTRAINT_VIOLATION, message);
-        }
-
-        for (String name : nameForm.getNames().keySet())
-        {
-          if (nameFormsByName.containsKey(name))
-          {
-            NameForm conflictingNameForm = nameFormsByName.get(name);
-
-            LocalizableMessage message = ERR_SCHEMA_CONFLICTING_NAME_FORM_NAME.
-                get(nameForm.getNameOrOID(), oid,
-                    conflictingNameForm.getNameOrOID());
-            throw new DirectoryException(
-                           ResultCode.CONSTRAINT_VIOLATION, message);
-          }
-        }
+        formBuilder.removeExtraProperty(SCHEMA_PROPERTY_FILENAME)
+                   .extraProperties(SCHEMA_PROPERTY_FILENAME, schemaFile);
       }
-
-      if(mappedForms == null)
+      if (overwriteExisting)
       {
-        mappedForms = new ArrayList<>();
+        formBuilder.addToSchemaOverwrite();
       }
-
-      mappedForms.add(nameForm);
-      nameFormsByOC.put(objectClass, mappedForms);
-      nameFormsByName.put(toLowerCase(nameForm.getOID()), nameForm);
-
-      for (String name : nameForm.getNames().keySet())
+      else
       {
-        nameFormsByName.put(name, nameForm);
+        formBuilder.addToSchema();
       }
+      switchSchema(builder.toSchema());
+    }
+    finally
+    {
+      exclusiveLock.unlock();
     }
   }
 
-
+  /**
+   * Registers the provided name form definition with this schema.
+   *
+   * @param definition
+   *          The name form definition to register.
+   * @param schemaFile
+   *          The schema file where this definition belongs, maybe {@code null}
+   * @param overwriteExisting
+   *          Indicates whether to overwrite an existing mapping if there are any conflicts
+   * @throws DirectoryException
+   *           If a conflict is encountered and the <CODE>overwriteExisting</CODE> flag is set to
+   *           <CODE>false</CODE>
+   */
+  public void registerNameForm(String definition, String schemaFile, boolean overwriteExisting)
+      throws DirectoryException
+  {
+    exclusiveLock.lock();
+    try
+    {
+      String definitionWithFile = getDefinitionWithSchemaFile(definition, schemaFile);
+      switchSchema(new SchemaBuilder(schemaNG)
+        .addNameForm(definitionWithFile, overwriteExisting)
+        .toSchema());
+    }
+    finally
+    {
+      exclusiveLock.unlock();
+    }
+  }
 
   /**
    * Deregisters the provided name form definition with this schema.
    *
    * @param  nameForm  The name form definition to deregister.
+   * @throws DirectoryException
+   *            If an error occurs.
    */
-  public void deregisterNameForm(NameForm nameForm)
+  public void deregisterNameForm(NameForm nameForm) throws DirectoryException
   {
-    synchronized (nameFormsByOC)
+    exclusiveLock.lock();
+    try
     {
-      List<NameForm> mappedForms = nameFormsByOC.get(
-              nameForm.getStructuralClass());
-      if(mappedForms != null)
-      {
-        mappedForms.remove(nameForm);
-        if(mappedForms.isEmpty())
-        {
-          nameFormsByOC.remove(nameForm.getStructuralClass());
-        }
-      }
-      nameFormsByOC.remove(nameForm.getStructuralClass());
-      nameFormsByName.remove(toLowerCase(nameForm.getOID()),
-                             nameForm);
-
-      for (String name : nameForm.getNames().keySet())
-      {
-        nameFormsByName.remove(name, nameForm);
-      }
+      SchemaBuilder builder = new SchemaBuilder(schemaNG);
+      builder.removeNameForm(nameForm.getNameOrOID());
+      switchSchema(builder.toSchema());
+    }
+    finally
+    {
+      exclusiveLock.unlock();
     }
   }
 
@@ -2053,17 +2031,13 @@
       }
     }
 
-    for (List<NameForm> mappedForms : nameFormsByOC.values())
+    for (NameForm nameForm : getNameForms())
     {
-      for (NameForm nf : mappedForms)
+      if (nameForm.getRequiredAttributes().contains(type) || nameForm.getOptionalAttributes().contains(type))
       {
-        if (nf.getRequiredAttributes().contains(type) || nf.getOptionalAttributes().contains(type))
-        {
-          NameForm newNF = recreateFromDefinition(nf);
-          deregisterNameForm(nf);
-          registerNameForm(newNF, true);
-          rebuildDependentElements(nf, depth + 1);
-        }
+        deregisterNameForm(nameForm);
+        registerNameForm(nameForm.toString(), getSchemaFileName(nameForm), true);
+        rebuildDependentElements(nameForm, depth + 1);
       }
     }
 
@@ -2111,16 +2085,15 @@
   {
     circularityCheck(depth, c);
 
-    List<NameForm> mappedForms = nameFormsByOC.get(c);
+    Collection<NameForm> mappedForms = getNameForm(c);
     if (mappedForms != null)
     {
       for (NameForm nf : mappedForms)
       {
         if (nf != null)
         {
-          NameForm newNF = recreateFromDefinition(nf);
           deregisterNameForm(nf);
-          registerNameForm(newNF, true);
+          registerNameForm(nf.toString(), getSchemaFileName(nf), true);
           rebuildDependentElements(nf, depth + 1);
         }
       }
@@ -2175,8 +2148,7 @@
       throws DirectoryException
   {
     ByteString value = ByteString.valueOfUtf8(dcr.toString());
-    DITContentRule copy =
-        DITContentRuleSyntax.decodeDITContentRule(value, this, false);
+    DITContentRule copy = DITContentRuleSyntax.decodeDITContentRule(value, this, false);
     setSchemaFile(copy, getSchemaFile(dcr));
     return copy;
   }
@@ -2191,15 +2163,6 @@
     return copy;
   }
 
-  private NameForm recreateFromDefinition(NameForm nf)
-      throws DirectoryException
-  {
-    ByteString value = ByteString.valueOfUtf8(nf.toString());
-    NameForm copy = NameFormSyntax.decodeNameForm(value, this, false);
-    setSchemaFile(copy, getSchemaFile(nf));
-    return copy;
-  }
-
   /**
    * Creates a new {@link Schema} object that is a duplicate of this one. It elements may be added
    * and removed from the duplicate without impacting this version.
@@ -2223,8 +2186,6 @@
     dupSchema.ditContentRules.putAll(ditContentRules);
     dupSchema.ditStructureRulesByID.putAll(ditStructureRulesByID);
     dupSchema.ditStructureRulesByNameForm.putAll(ditStructureRulesByNameForm);
-    dupSchema.nameFormsByOC.putAll(nameFormsByOC);
-    dupSchema.nameFormsByName.putAll(nameFormsByName);
     dupSchema.ldapSyntaxDescriptions.putAll(ldapSyntaxDescriptions);
     dupSchema.oldestModificationTime   = oldestModificationTime;
     dupSchema.youngestModificationTime = youngestModificationTime;
@@ -2671,18 +2632,6 @@
       ditStructureRulesByNameForm = null;
     }
 
-    if (nameFormsByName != null)
-    {
-      nameFormsByName.clear();
-      nameFormsByName = null;
-    }
-
-    if (nameFormsByOC != null)
-    {
-      nameFormsByOC.clear();
-      nameFormsByOC = null;
-    }
-
     if (subordinateTypes != null)
     {
       subordinateTypes.clear();
diff --git a/opendj-server-legacy/src/messages/org/opends/messages/schema.properties b/opendj-server-legacy/src/messages/org/opends/messages/schema.properties
index fac37e2..c0ca996 100644
--- a/opendj-server-legacy/src/messages/org/opends/messages/schema.properties
+++ b/opendj-server-legacy/src/messages/org/opends/messages/schema.properties
@@ -510,3 +510,9 @@
  of ldap syntax: '%s'
 ERR_PARSING_MATCHING_RULE_USE_OID_347=Unable to parse the OID from the provided definition \
  of matching rule use: '%s' 
+ERR_DIT_CONTENT_RULE_CANNOT_REGISTER_348=DIT content rule could not be \
+ registered from definition: %s
+ERR_NAME_FORM_CANNOT_REGISTER_349=Name form could not be \
+ registered from definition: %s
+ERR_PARSING_NAME_FORM_OID_350=Unable to parse the OID from the provided definition \
+ of name form: '%s' 
\ No newline at end of file
diff --git a/opendj-server-legacy/src/test/java/org/opends/server/backends/SchemaBackendTestCase.java b/opendj-server-legacy/src/test/java/org/opends/server/backends/SchemaBackendTestCase.java
index 6dcc564..b60489f 100644
--- a/opendj-server-legacy/src/test/java/org/opends/server/backends/SchemaBackendTestCase.java
+++ b/opendj-server-legacy/src/test/java/org/opends/server/backends/SchemaBackendTestCase.java
@@ -1101,7 +1101,7 @@
       assertFalse(DirectoryServer.getSchema().hasAttributeType(attrName));
       runModify(argsNotPermissive(), ldif, SUCCESS);
 
-      runModify(argsNotPermissive(), ldif1, UNWILLING_TO_PERFORM);
+      runModify(argsNotPermissive(), ldif1, CONSTRAINT_VIOLATION);
       assertTrue(DirectoryServer.getSchema().hasAttributeType(attrName));
     }
     finally
@@ -1928,7 +1928,7 @@
     String nameFormName = "testaddnameformwithundefinedreqat";
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
 
-    runModify(argsNotPermissive(), ldif, INVALID_ATTRIBUTE_SYNTAX);
+    runModify(argsNotPermissive(), ldif, CONSTRAINT_VIOLATION);
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
   }
 
@@ -1961,7 +1961,7 @@
     String nameFormName = "testaddnameformwithmultipleundefinedreqat";
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
 
-    runModify(argsNotPermissive(), ldif, INVALID_ATTRIBUTE_SYNTAX);
+    runModify(argsNotPermissive(), ldif, CONSTRAINT_VIOLATION);
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
   }
 
@@ -1993,7 +1993,7 @@
     String nameFormName = "testaddnameformwithundefinedoptat";
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
 
-    runModify(argsNotPermissive(), ldif, INVALID_ATTRIBUTE_SYNTAX);
+    runModify(argsNotPermissive(), ldif, CONSTRAINT_VIOLATION);
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
   }
 
@@ -2026,7 +2026,7 @@
     String nameFormName = "testaddnameformwithmultipleundefinedoptat";
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
 
-    runModify(argsNotPermissive(), ldif, INVALID_ATTRIBUTE_SYNTAX);
+    runModify(argsNotPermissive(), ldif, CONSTRAINT_VIOLATION);
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
   }
 
@@ -2051,7 +2051,7 @@
     String nameFormName = "testaddnameformwithundefinedoc";
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
 
-    runModify(argsNotPermissive(), ldif, INVALID_ATTRIBUTE_SYNTAX);
+    runModify(argsNotPermissive(), ldif, CONSTRAINT_VIOLATION);
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
   }
 
@@ -2082,7 +2082,7 @@
     String nameFormName = "testaddnameformwithauxiliaryoc";
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
 
-    runModify(argsNotPermissive(), ldif, INVALID_ATTRIBUTE_SYNTAX);
+    runModify(argsNotPermissive(), ldif, CONSTRAINT_VIOLATION);
     assertFalse(DirectoryServer.getSchema().hasNameForm(nameFormName));
   }
 
diff --git a/opendj-server-legacy/src/test/java/org/opends/server/schema/GenericSchemaTestCase.java b/opendj-server-legacy/src/test/java/org/opends/server/schema/GenericSchemaTestCase.java
index 6cf7860..c55fd90 100644
--- a/opendj-server-legacy/src/test/java/org/opends/server/schema/GenericSchemaTestCase.java
+++ b/opendj-server-legacy/src/test/java/org/opends/server/schema/GenericSchemaTestCase.java
@@ -25,13 +25,13 @@
 import org.forgerock.opendj.ldap.schema.AttributeType;
 import org.forgerock.opendj.ldap.schema.MatchingRule;
 import org.forgerock.opendj.ldap.schema.ObjectClass;
+import org.forgerock.opendj.ldap.schema.NameForm;
 import org.forgerock.opendj.ldap.schema.Syntax;
 import org.opends.server.TestCaseUtils;
 import org.opends.server.core.DirectoryServer;
 import org.opends.server.types.Attribute;
 import org.opends.server.types.Entry;
 import org.opends.server.types.LDIFImportConfig;
-import org.opends.server.types.NameForm;
 import org.opends.server.types.Schema;
 import org.opends.server.util.LDIFReader;
 import org.testng.annotations.BeforeClass;
@@ -318,8 +318,7 @@
       {
         for (ByteString v : a)
         {
-          NameForm nf = NameFormSyntax.decodeNameForm(
-              v, DirectoryServer.getSchema(), true);
+          NameForm nf = DirectoryServer.getSchema().parseNameForm(v.toString());
           if (! isNumericOID(nf.getOID()))
           {
             invalidOIDs.add(nf.getNameOrOID());

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