/*
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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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* Portions Copyright 2006-2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.schema;
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import java.text.SimpleDateFormat;
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import java.util.TimeZone;
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import java.util.concurrent.locks.ReentrantLock;
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import org.opends.server.admin.std.server.EqualityMatchingRuleCfg;
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import org.opends.server.api.EqualityMatchingRule;
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import org.opends.server.config.ConfigException;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.protocols.asn1.ASN1OctetString;
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import org.opends.server.types.ByteString;
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import org.opends.server.types.DirectoryException;
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import org.opends.server.types.InitializationException;
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import org.opends.server.types.DebugLogLevel;
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import static org.opends.server.loggers.ErrorLogger.*;
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import static org.opends.server.loggers.debug.DebugLogger.*;
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import org.opends.server.loggers.debug.DebugTracer;
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import static org.opends.server.schema.SchemaConstants.*;
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import static org.opends.server.util.ServerConstants.*;
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/**
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* This class defines the generalizedTimeMatch matching rule defined in X.520
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* and referenced in RFC 2252.
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*/
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public class GeneralizedTimeEqualityMatchingRule
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extends EqualityMatchingRule
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{
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/**
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* The tracer object for the debug logger.
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*/
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private static final DebugTracer TRACER = getTracer();
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/**
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* The lock that will be used to provide threadsafe access to the date
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* formatter.
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*/
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private static ReentrantLock dateFormatLock;
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/**
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* The date formatter that will be used to convert dates into generalized time
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* values. Note that all interaction with it must be synchronized.
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*/
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private static SimpleDateFormat dateFormat;
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/**
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* The time zone used for UTC time.
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*/
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private static TimeZone utcTimeZone;
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/*
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* Create the date formatter that will be used to construct and parse
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* normalized generalized time values.
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*/
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static
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{
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utcTimeZone = TimeZone.getTimeZone("UTC");
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dateFormat = new SimpleDateFormat(DATE_FORMAT_GENERALIZED_TIME);
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dateFormat.setLenient(false);
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dateFormat.setTimeZone(utcTimeZone);
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dateFormatLock = new ReentrantLock();
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}
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/**
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* Creates a new instance of this generalizedTimeMatch matching rule.
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*/
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public GeneralizedTimeEqualityMatchingRule()
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{
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super();
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}
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/**
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* {@inheritDoc}
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*/
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public void initializeMatchingRule(EqualityMatchingRuleCfg configuration)
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throws ConfigException, InitializationException
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{
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// No initialization is required.
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}
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/**
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* Retrieves the common name for this matching rule.
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*
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* @return The common name for this matching rule, or <CODE>null</CODE> if
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* it does not have a name.
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*/
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public String getName()
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{
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return EMR_GENERALIZED_TIME_NAME;
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}
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/**
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* Retrieves the OID for this matching rule.
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*
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* @return The OID for this matching rule.
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*/
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public String getOID()
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{
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return EMR_GENERALIZED_TIME_OID;
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}
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/**
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* Retrieves the description for this matching rule.
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*
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* @return The description for this matching rule, or <CODE>null</CODE> if
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* there is none.
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*/
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public String getDescription()
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{
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// There is no standard description for this matching rule.
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return null;
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}
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/**
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* Retrieves the OID of the syntax with which this matching rule is
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* associated.
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*
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* @return The OID of the syntax with which this matching rule is associated.
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*/
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public String getSyntaxOID()
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{
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return SYNTAX_GENERALIZED_TIME_OID;
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}
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/**
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* Retrieves the normalized form of the provided value, which is best suited
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* for efficiently performing matching operations on that value.
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*
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* @param value The value to be normalized.
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*
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* @return The normalized version of the provided value.
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*
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* @throws DirectoryException If the provided value is invalid according to
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* the associated attribute syntax.
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*/
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public ByteString normalizeValue(ByteString value)
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throws DirectoryException
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{
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try
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{
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long timestamp = GeneralizedTimeSyntax.decodeGeneralizedTimeValue(value);
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return new ASN1OctetString(GeneralizedTimeSyntax.format(timestamp));
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}
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catch (DirectoryException de)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, de);
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}
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switch (DirectoryServer.getSyntaxEnforcementPolicy())
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{
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case REJECT:
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throw de;
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case WARN:
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logError(de.getMessageObject());
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return new ASN1OctetString(value.value());
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default:
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return new ASN1OctetString(value.value());
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}
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}
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}
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/**
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* Indicates whether the two provided normalized values are equal to each
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* other.
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*
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* @param value1 The normalized form of the first value to compare.
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* @param value2 The normalized form of the second value to compare.
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*
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* @return <CODE>true</CODE> if the provided values are equal, or
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* <CODE>false</CODE> if not.
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*/
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public boolean areEqual(ByteString value1, ByteString value2)
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{
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try
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{
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long time1 = GeneralizedTimeSyntax.decodeGeneralizedTimeValue(value1);
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long time2 = GeneralizedTimeSyntax.decodeGeneralizedTimeValue(value2);
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return (time1 == time2);
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}
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catch (DirectoryException de)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, de);
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}
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return false;
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}
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}
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}
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