From aca21e0f8ae2cfcc1326cfa6afffd64c7c35625f Mon Sep 17 00:00:00 2001
From: Jean-Noel Rouvignac <jean-noel.rouvignac@forgerock.com>
Date: Mon, 11 May 2015 08:54:59 +0000
Subject: [PATCH] Code cleanup

---
 opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DnKeyFormat.java    |   16 ++++++++
 opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/EntryContainer.java |   44 +++------------------
 opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DN2URI.java         |   15 +------
 opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/Importer.java       |   35 +++++++----------
 4 files changed, 41 insertions(+), 69 deletions(-)

diff --git a/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DN2URI.java b/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DN2URI.java
index 8f8f0c9..8288aa1 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DN2URI.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DN2URI.java
@@ -27,6 +27,7 @@
 package org.opends.server.backends.pluggable;
 
 import static org.opends.messages.BackendMessages.*;
+import static org.opends.server.backends.pluggable.DnKeyFormat.*;
 import static org.opends.server.util.ServerConstants.*;
 
 import java.util.ArrayList;
@@ -585,18 +586,8 @@
      * find subordinates of the base entry from the top of the tree downwards.
      */
     ByteString baseDN = toKey(searchOp.getBaseDN());
-    ByteStringBuilder suffix = new ByteStringBuilder(baseDN.length() + 1);
-    suffix.append(baseDN);
-    ByteStringBuilder end = new ByteStringBuilder(suffix);
-
-    /*
-     * Set the ending value to a value of equal length but slightly
-     * greater than the suffix. Since keys are compared in
-     * reverse order we must set the first byte (the comma).
-     * No possibility of overflow here.
-     */
-    suffix.append((byte) 0x00);
-    end.append((byte) 0x01);
+    ByteStringBuilder suffix = beforeKey(baseDN);
+    ByteStringBuilder end = afterKey(baseDN);
 
     try
     {
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DnKeyFormat.java b/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DnKeyFormat.java
index 1d37ff1..0278503 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DnKeyFormat.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/DnKeyFormat.java
@@ -88,4 +88,20 @@
     }
     return builder.toByteString();
   }
+
+  static ByteStringBuilder beforeKey(final ByteSequence key)
+  {
+    final ByteStringBuilder beforeKey = new ByteStringBuilder(key.length() + 1);
+    beforeKey.append(key);
+    beforeKey.append((byte) 0x00);
+    return beforeKey;
+  }
+
+  static ByteStringBuilder afterKey(final ByteSequence key)
+  {
+    final ByteStringBuilder afterKey = new ByteStringBuilder(key.length() + 1);
+    afterKey.append(key);
+    afterKey.append((byte) 0x01);
+    return afterKey;
+  }
 }
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/EntryContainer.java b/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/EntryContainer.java
index 1f7462d..de912dd 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/EntryContainer.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/EntryContainer.java
@@ -29,9 +29,9 @@
 
 import static org.forgerock.util.Utils.*;
 import static org.opends.messages.BackendMessages.*;
+import static org.opends.server.backends.pluggable.DnKeyFormat.*;
 import static org.opends.server.backends.pluggable.EntryIDSet.*;
 import static org.opends.server.backends.pluggable.IndexFilter.*;
-import static org.opends.server.backends.pluggable.DnKeyFormat.*;
 import static org.opends.server.backends.pluggable.VLVIndex.*;
 import static org.opends.server.core.DirectoryServer.*;
 import static org.opends.server.protocols.ldap.LDAPResultCode.*;
@@ -1156,17 +1156,8 @@
      * "ou=people,dc=example,dc=com".
      */
     ByteString baseDNKey = dnToDNKey(aBaseDN, this.baseDN.size());
-    ByteStringBuilder suffix = copyOf(baseDNKey);
-    ByteStringBuilder end = copyOf(baseDNKey);
-
-    /*
-     * Set the ending value to a value of equal length but slightly
-     * greater than the suffix. Since keys are compared in
-     * reverse order we must set the first byte (the comma).
-     * No possibility of overflow here.
-     */
-    suffix.append((byte) 0x00);
-    end.append((byte) 0x01);
+    ByteStringBuilder suffix = beforeKey(baseDNKey);
+    ByteStringBuilder end = afterKey(baseDNKey);
 
     // Set the starting value.
     ByteSequence begin;
@@ -1621,15 +1612,8 @@
              * downwards.
              */
             ByteString entryDNKey = dnToDNKey(entryDN, baseDN.size());
-            ByteStringBuilder suffix = copyOf(entryDNKey);
-            ByteStringBuilder end = copyOf(entryDNKey);
-
-            /*
-             * Set the ending value to a value of equal length but slightly
-             * greater than the suffix.
-             */
-            suffix.append((byte) 0x00);
-            end.append((byte) 0x01);
+            ByteStringBuilder suffix = beforeKey(entryDNKey);
+            ByteStringBuilder end = afterKey(entryDNKey);
 
             int subordinateEntriesDeleted = 0;
 
@@ -1738,13 +1722,6 @@
     }
   }
 
-  private ByteStringBuilder copyOf(ByteString bs)
-  {
-    ByteStringBuilder newBS = new ByteStringBuilder(bs.length() + 1);
-    newBS.append(bs);
-    return newBS;
-  }
-
   private void deleteEntry(WriteableTransaction txn,
       IndexBuffer indexBuffer,
       boolean manageDsaIT,
@@ -2192,15 +2169,8 @@
              * downwards.
              */
             ByteString currentDNKey = dnToDNKey(currentDN, baseDN.size());
-            ByteStringBuilder suffix = copyOf(currentDNKey);
-            ByteStringBuilder end = copyOf(currentDNKey);
-
-            /*
-             * Set the ending value to a value of equal length but slightly
-             * greater than the suffix.
-             */
-            suffix.append((byte) 0x00);
-            end.append((byte) 0x01);
+            ByteStringBuilder suffix = beforeKey(currentDNKey);
+            ByteStringBuilder end = afterKey(currentDNKey);
 
             Cursor<ByteString, ByteString> cursor = txn.openCursor(dn2id.getName());
             try
diff --git a/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/Importer.java b/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/Importer.java
index a003477..2358e65 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/Importer.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/Importer.java
@@ -28,6 +28,7 @@
 
 import static org.opends.messages.BackendMessages.*;
 import static org.opends.server.admin.std.meta.BackendIndexCfgDefn.IndexType.*;
+import static org.opends.server.backends.pluggable.DnKeyFormat.*;
 import static org.opends.server.backends.pluggable.EntryIDSet.*;
 import static org.opends.server.backends.pluggable.SuffixContainer.*;
 import static org.opends.server.util.DynamicConstants.*;
@@ -1214,11 +1215,12 @@
               boolean success = cursor.positionToKeyOrNext(key);
               if (success && key.equals(cursor.getKey()))
               {
-                // This is the base entry for a branch that was excluded in the
-                // import so we must migrate all entries in this branch over to
-                // the new entry container.
-                ByteStringBuilder end = new ByteStringBuilder(key.length() + 1);
-                end.append((byte) 0x01);
+                /*
+                 * This is the base entry for a branch that was excluded in the
+                 * import so we must migrate all entries in this branch over to
+                 * the new entry container.
+                 */
+                ByteStringBuilder end = afterKey(key);
 
                 while (success
                     && ByteSequence.COMPARATOR.compare(key, end) < 0
@@ -1287,21 +1289,16 @@
               }
               else
               {
-                // This is the base entry for a branch that will be included
-                // in the import so we don't want to copy the branch to the
-                //  new entry container.
-
+                /*
+                 * This is the base entry for a branch that will be included
+                 * in the import so we do not want to copy the branch to the
+                 * new entry container.
+                 */
                 /*
                  * Advance the cursor to next entry at the same level in the DIT
-                 * skipping all the entries in this branch. Set the next
-                 * starting value to a value of equal length but slightly
-                 * greater than the previous DN. Since keys are compared in
-                 * reverse order we must set the first byte (the comma). No
-                 * possibility of overflow here.
+                 * skipping all the entries in this branch.
                  */
-                ByteStringBuilder begin = new ByteStringBuilder(key.length() + 1);
-                begin.append(key);
-                begin.append((byte) 0x01);
+                ByteStringBuilder begin = afterKey(key);
                 success = cursor.positionToKeyOrNext(begin);
               }
             }
@@ -1335,9 +1332,7 @@
     }
   }
 
-  /**
-   * Task to perform append/replace processing.
-   */
+  /** Task to perform append/replace processing. */
   private class AppendReplaceTask extends ImportTask
   {
     public AppendReplaceTask(final Storage storage)

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