/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2009 Sun Microsystems, Inc.
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* Portions Copyright 2012-2015 ForgeRock AS.
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*/
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package org.opends.server.api;
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import org.forgerock.i18n.LocalizableMessage;
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import java.util.List;
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import org.opends.server.admin.std.server.AttributeSyntaxCfg;
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import org.opends.server.core.ServerContext;
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import org.forgerock.opendj.config.server.ConfigException;
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import org.opends.server.types.InitializationException;
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import org.opends.server.util.RemoveOnceSDKSchemaIsUsed;
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import org.forgerock.opendj.ldap.ByteSequence;
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import org.forgerock.opendj.ldap.schema.MatchingRule;
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import org.forgerock.opendj.ldap.schema.Schema;
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import org.forgerock.opendj.ldap.schema.Syntax;
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import org.forgerock.i18n.LocalizableMessageBuilder;
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/**
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* This class defines the set of methods and structures that must be
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* implemented by a Directory Server module that implements an
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* attribute syntax.
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*
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* @param <T> The type of configuration handled by this attribute
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* syntax.
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*/
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@org.opends.server.types.PublicAPI(
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stability=org.opends.server.types.StabilityLevel.VOLATILE,
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mayInstantiate=false,
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mayExtend=true,
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mayInvoke=false)
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@RemoveOnceSDKSchemaIsUsed("All descendants classes can be removed as well")
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public abstract class AttributeSyntax<T extends AttributeSyntaxCfg>
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{
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/**
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* Initializes this attribute syntax based on the information in the
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* provided configuration entry.
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*
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* @param configuration The configuration to use to initialize
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* this attribute syntax.
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* @param serverContext
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* The server context.
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*
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* @throws ConfigException If an unrecoverable problem arises in
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* the process of performing the
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* initialization.
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*
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* @throws InitializationException If a problem occurs during
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* initialization that is not
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* related to the server
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* configuration.
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*/
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public void initializeSyntax(T configuration, ServerContext serverContext)
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throws ConfigException, InitializationException
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{
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// not implemented
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}
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/**
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* Returns the SDK Syntax equivalent to this syntax.
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* <p>
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* This method allow smooth migration to SDK syntax. It will disappear
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* once the the migration to SDK schema is complete, together with
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* this class and all its implementation.
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*
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* @param schema
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* Schema to use to retrieve the syntax
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*
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* @return the equivalent SDK syntax.
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*/
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public abstract Syntax getSDKSyntax(Schema schema);
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/**
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* Indicates whether the provided configuration is acceptable for
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* this attribute syntax. It should be possible to call this method
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* on an uninitialized attribute syntax instance in order to
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* determine whether the syntax would be able to use the provided
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* configuration.
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* <BR><BR>
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* Note that implementations which use a subclass of the provided
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* configuration class will likely need to cast the configuration
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* to the appropriate subclass type.
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*
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* @param configuration The attribute syntax configuration
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* for which to make the determination.
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* @param unacceptableReasons A list that may be used to hold the
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* reasons that the provided
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* configuration is not acceptable.
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*
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* @return {@code true} if the provided configuration is acceptable
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* for this attribute syntax, or {@code false} if not.
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*/
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public boolean isConfigurationAcceptable(
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AttributeSyntaxCfg configuration,
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List<LocalizableMessage> unacceptableReasons)
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{
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// This default implementation does not perform any special
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// validation. It should be overridden by attribute syntax
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// implementations that wish to perform more detailed validation.
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return true;
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}
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/**
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* Performs any finalization that may be necessary for this
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* attribute syntax. By default, no finalization is performed.
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*/
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public void finalizeSyntax()
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{
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// No implementation required.
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}
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/**
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* Retrieves the common name for this attribute syntax.
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*
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* @return The common name for this attribute syntax.
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*/
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public abstract String getName();
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/**
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* Retrieves the OID for this attribute syntax.
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*
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* @return The OID for this attribute syntax.
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*/
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public abstract String getOID();
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/**
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* Retrieves a description for this attribute syntax.
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*
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* @return A description for this attribute syntax.
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*/
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public abstract String getDescription();
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/**
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* Retrieves the default equality matching rule that will be used
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* for attributes with this syntax.
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*
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* @return The default equality matching rule that will be used for
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* attributes with this syntax, or {@code null} if equality
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* matches will not be allowed for this type by default.
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*/
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public MatchingRule getEqualityMatchingRule()
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{
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return null;
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}
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/**
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* Retrieves the default ordering matching rule that will be used
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* for attributes with this syntax.
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*
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* @return The default ordering matching rule that will be used for
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* attributes with this syntax, or {@code null} if ordering
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* matches will not be allowed for this type by default.
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*/
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public MatchingRule getOrderingMatchingRule()
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{
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return null;
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}
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/**
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* Retrieves the default substring matching rule that will be used
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* for attributes with this syntax.
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*
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* @return The default substring matching rule that will be used
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* for attributes with this syntax, or {@code null} if
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* substring matches will not be allowed for this type by
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* default.
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*/
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public MatchingRule getSubstringMatchingRule()
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{
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return null;
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}
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/**
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* Retrieves the default approximate matching rule that will be used
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* for attributes with this syntax.
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*
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* @return The default approximate matching rule that will be used
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* for attributes with this syntax, or {@code null} if
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* approximate matches will not be allowed for this type by
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* default.
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*/
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public MatchingRule getApproximateMatchingRule()
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{
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return null;
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}
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/**
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* Indicates whether the provided value is acceptable for use in an
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* attribute with this syntax. If it is not, then the reason may be
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* appended to the provided buffer.
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*
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* @param value The value for which to make the
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* determination.
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* @param invalidReason The buffer to which the invalid reason
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* should be appended.
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*
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* @return {@code true} if the provided value is acceptable for use
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* with this syntax, or {@code false} if not.
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*/
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public boolean valueIsAcceptable(ByteSequence value,
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LocalizableMessageBuilder invalidReason)
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{
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return true;
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}
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/**
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* Indicates whether this attribute syntax requires BER encoding.
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*
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* @return {@code true} if this syntax required BER encoding.
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*/
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public boolean isBEREncodingRequired()
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{
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return true;
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}
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/**
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* Indicates whether this attribute syntax is human readable.
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*
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* @return {@code true} if this syntax is human readable.
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*/
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public boolean isHumanReadable()
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{
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return true;
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}
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/**
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* Retrieves the hash code for this attribute syntax. It will be
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* calculated as the sum of the characters in the OID.
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*
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* @return The hash code for this attribute syntax.
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*/
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@Override
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public final int hashCode()
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{
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int hashCode = 0;
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String oidString = getOID();
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int oidLength = oidString.length();
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for (int i=0; i < oidLength; i++)
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{
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hashCode += oidString.charAt(i);
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}
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return hashCode;
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}
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/**
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* Indicates whether the provided object is equal to this attribute
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* syntax. The provided object will be considered equal to this
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* attribute syntax only if it is an attribute syntax with the same
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* OID.
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*
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* @param o The object for which to make the determination.
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*
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* @return {@code true} if the provided object is equal to this
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* attribute syntax, or {@code false} if it is not.
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*/
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@Override
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public final boolean equals(Object o)
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{
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if (this == o)
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{
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return true;
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}
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if (!(o instanceof AttributeSyntax))
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{
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return false;
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}
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return getOID().equals(((AttributeSyntax<?>) o).getOID());
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}
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/**
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* Retrieves a string representation of this attribute syntax in the
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* format defined in RFC 2252.
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*
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* @return A string representation of this attribute syntax in the
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* format defined in RFC 2252.
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*/
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@Override
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public String toString()
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{
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StringBuilder buffer = new StringBuilder();
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toString(buffer);
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return buffer.toString();
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}
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/**
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* Appends a string representation of this attribute syntax in the
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* format defined in RFC 2252 to the provided buffer.
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*
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* @param buffer The buffer to which the information should be
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* appended.
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*/
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public final void toString(StringBuilder buffer)
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{
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buffer.append("( ");
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buffer.append(getOID());
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String description = getDescription();
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if (description != null && description.length() != 0)
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{
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buffer.append(" DESC '").append(description).append("'");
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}
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buffer.append(" )");
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}
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}
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