/*
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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 Sun Microsystems, Inc.
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*/
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package org.opends.server.api;
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import java.io.Serializable;
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import java.util.Comparator;
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import org.opends.server.types.ByteString;
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import org.opends.server.types.ConditionResult;
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import static org.opends.server.loggers.Debug.*;
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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 a matching
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* rule used for determining the correct order of values when sorting
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* or processing range filters.
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*/
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public abstract class OrderingMatchingRule
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extends MatchingRule
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implements Comparator<byte[]>, Serializable
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{
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/**
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* The fully-qualified name of this class for debugging purposes.
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*/
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private static final String CLASS_NAME =
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"org.opends.server.api.OrderingMatchingRule";
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/**
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* The serial version identifier required to satisfy the compiler
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* because this class implements the
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* <CODE>java.io.Serializable</CODE> interface. This value was
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* generated using the <CODE>serialver</CODE> command-line utility
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* included with the Java SDK.
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*/
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private static final long serialVersionUID = -5322529685787024597L;
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/**
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* Compares the first value to the second and returns a value that
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* indicates their relative order.
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*
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* @param value1 The normalized form of the first value to
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* compare.
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* @param value2 The normalized form of the second value to
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* compare.
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*
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* @return A negative integer if <CODE>value1</CODE> should come
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* before <CODE>value2</CODE> in ascending order, a
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* positive integer if <CODE>value1</CODE> should come
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* after <CODE>value2</CODE> in ascending order, or zero if
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* there is no difference between the values with regard to
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* ordering.
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*/
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public abstract int compareValues(ByteString value1,
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ByteString value2);
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/**
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* Indicates whether the provided attribute value should be
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* considered a match for the given assertion value. This will only
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* be used for the purpose of extensible matching.
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* <BR><BR>
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* Note that ordering matching rules by default do not support
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* extensible matching, and therefore this method will always return
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* <CODE>UNDEFINED</CODE>. If an ordering matching rule does
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* support extensible matching operations, then it should override
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* this method and provide an appropriate implementation.
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*
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* @param attributeValue The attribute value in a form that has
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* been normalized according to this
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* matching rule.
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* @param assertionValue The assertion value in a form that has
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* been normalized according to this
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* matching rule.
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*
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* @return <CODE>true</CODE> if the attribute value should be
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* considered a match for the provided assertion value, or
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* <CODE>false</CODE> if not.
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*/
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public ConditionResult valuesMatch(ByteString attributeValue,
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ByteString assertionValue)
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{
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assert debugEnter(CLASS_NAME, "valuesMatch",
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String.valueOf(attributeValue),
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String.valueOf(assertionValue));
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return ConditionResult.UNDEFINED;
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}
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}
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