/*
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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
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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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
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying 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 2008-2009 Sun Microsystems, Inc.
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*/
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package org.opends.server.extensions;
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import org.opends.messages.Message;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import org.opends.server.admin.server.ConfigurationChangeListener;
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import org.opends.server.admin.std.server.UserDefinedVirtualAttributeCfg;
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import org.opends.server.api.VirtualAttributeProvider;
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import org.opends.server.config.ConfigException;
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import org.opends.server.core.SearchOperation;
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import org.opends.server.types.*;
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/**
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* This class implements a virtual attribute provider that allows administrators
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* to define their own values that will be inserted into any entry that matches
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* the criteria defined in the virtual attribute rule. This can be used to
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* provide functionality like Class of Service (CoS) in the Sun Java System
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* Directory Server.
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*/
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public class UserDefinedVirtualAttributeProvider
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extends VirtualAttributeProvider<UserDefinedVirtualAttributeCfg>
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implements ConfigurationChangeListener<UserDefinedVirtualAttributeCfg>
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{
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// The current configuration for this virtual attribute provider.
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private UserDefinedVirtualAttributeCfg currentConfig;
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/**
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* Creates a new instance of this member virtual attribute provider.
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*/
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public UserDefinedVirtualAttributeProvider()
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{
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super();
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// All initialization should be performed in the
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// initializeVirtualAttributeProvider method.
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public void initializeVirtualAttributeProvider(
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UserDefinedVirtualAttributeCfg configuration)
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throws ConfigException, InitializationException
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{
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this.currentConfig = configuration;
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configuration.addUserDefinedChangeListener(this);
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public void finalizeVirtualAttributeProvider()
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{
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currentConfig.removeUserDefinedChangeListener(this);
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public boolean isMultiValued()
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{
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if (currentConfig == null)
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{
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return true;
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}
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else
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{
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return (currentConfig.getValue().size() > 1);
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public Set<AttributeValue> getValues(Entry entry,
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VirtualAttributeRule rule)
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{
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AttributeType attributeType = rule.getAttributeType();
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Set<String> userDefinedValues = currentConfig.getValue();
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switch (userDefinedValues.size()) {
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case 0:
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return Collections.emptySet();
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case 1:
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String valueString = userDefinedValues.iterator().next();
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AttributeValue value =
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AttributeValues.create(attributeType, valueString);
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return Collections.singleton(value);
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default:
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HashSet<AttributeValue> values =
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new HashSet<AttributeValue>(userDefinedValues.size());
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for (String valueString2 : userDefinedValues)
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{
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values.add(AttributeValues.create(attributeType, valueString2));
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}
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return Collections.unmodifiableSet(values);
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public boolean isSearchable(VirtualAttributeRule rule,
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SearchOperation searchOperation)
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{
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// We will not allow searches based only on user-defined virtual attributes.
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return false;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public void processSearch(VirtualAttributeRule rule,
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SearchOperation searchOperation)
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{
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searchOperation.setResultCode(ResultCode.UNWILLING_TO_PERFORM);
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return;
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}
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/**
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* {@inheritDoc}
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*/
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public boolean isConfigurationChangeAcceptable(
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UserDefinedVirtualAttributeCfg configuration,
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List<Message> unacceptableReasons)
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{
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// The new configuration should always be acceptable.
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return true;
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}
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/**
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* {@inheritDoc}
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*/
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public ConfigChangeResult applyConfigurationChange(
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UserDefinedVirtualAttributeCfg configuration)
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{
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// Just accept the new configuration as-is.
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currentConfig = configuration;
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return new ConfigChangeResult(ResultCode.SUCCESS, false);
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}
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}
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