/*
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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 2009 Sun Microsystems, Inc.
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*/
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package org.opends.sdk.schema;
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import java.util.Arrays;
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import java.util.Comparator;
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import org.opends.sdk.*;
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/**
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* This class defines the distinguishedNameMatch matching rule defined in X.520
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* and referenced in RFC 2252.
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*/
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final class DistinguishedNameEqualityMatchingRuleImpl extends
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AbstractMatchingRuleImpl
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{
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private static final Comparator<AVA> ATV_COMPARATOR = new Comparator<AVA>()
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{
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public int compare(final AVA o1, final AVA o2)
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{
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return o1.getAttributeType().compareTo(o2.getAttributeType());
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}
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};
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@Override
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public Assertion getAssertion(final Schema schema, final ByteSequence value)
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throws DecodeException
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{
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DN assertion;
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try
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{
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assertion = DN.valueOf(value.toString(), schema);
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}
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catch (final LocalizedIllegalArgumentException e)
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{
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throw DecodeException.error(e.getMessageObject());
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}
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final DN finalAssertion = assertion;
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return new Assertion()
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{
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public ConditionResult matches(final ByteSequence attributeValue)
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{
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try
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{
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final DN attribute = DN.valueOf(attributeValue.toString(), schema);
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return matchDNs(finalAssertion, attribute);
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}
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catch (final LocalizedIllegalArgumentException e)
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{
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return ConditionResult.UNDEFINED;
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}
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}
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};
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}
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public ByteString normalizeAttributeValue(final Schema schema,
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final ByteSequence value) throws DecodeException
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{
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try
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{
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return ByteString.valueOf(DN.valueOf(value.toString(), schema)
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.toNormalizedString());
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}
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catch (final LocalizedIllegalArgumentException e)
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{
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throw DecodeException.error(e.getMessageObject());
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}
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}
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private ConditionResult matchAVAs(final AVA ava1, final AVA ava2)
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{
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final AttributeType type = ava1.getAttributeType();
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if (!type.equals(ava2.getAttributeType()))
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{
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return ConditionResult.FALSE;
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}
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final MatchingRule matchingRule = type.getEqualityMatchingRule();
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if (matchingRule != null)
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{
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try
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{
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final ByteString nv1 = matchingRule.normalizeAttributeValue(ava1
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.getAttributeValue());
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final ByteString nv2 = matchingRule.normalizeAttributeValue(ava2
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.getAttributeValue());
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return nv1.equals(nv2) ? ConditionResult.TRUE : ConditionResult.FALSE;
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}
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catch (final DecodeException de)
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{
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return ConditionResult.UNDEFINED;
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}
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}
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return ConditionResult.UNDEFINED;
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}
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private ConditionResult matchDNs(final DN dn1, final DN dn2)
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{
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final int sz1 = dn1.size();
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final int sz2 = dn2.size();
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if (sz1 != sz2)
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{
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return ConditionResult.FALSE;
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}
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else
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{
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final RDN rdn1 = dn1.rdn();
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final RDN rdn2 = dn2.rdn();
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while (rdn1 != null)
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{
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final ConditionResult result = matchRDNs(rdn1, rdn2);
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if (result != ConditionResult.TRUE)
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{
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return result;
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}
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}
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return ConditionResult.TRUE;
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}
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}
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private ConditionResult matchRDNs(final RDN rdn1, final RDN rdn2)
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{
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final int sz1 = rdn1.size();
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final int sz2 = rdn2.size();
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if (sz1 != sz2)
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{
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return ConditionResult.FALSE;
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}
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else if (sz1 == 1)
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{
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return matchAVAs(rdn1.getFirstAVA(), rdn2.getFirstAVA());
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}
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else
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{
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// Need to sort the AVAs before comparing.
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final AVA[] a1 = new AVA[sz1];
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int i = 0;
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for (final AVA ava : rdn1)
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{
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a1[i++] = ava;
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}
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Arrays.sort(a1, ATV_COMPARATOR);
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final AVA[] a2 = new AVA[sz1];
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i = 0;
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for (final AVA ava : rdn2)
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{
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a2[i++] = ava;
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}
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Arrays.sort(a2, ATV_COMPARATOR);
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for (i = 0; i < sz1; i++)
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{
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final ConditionResult result = matchAVAs(a1[i], a2[i]);
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if (result != ConditionResult.TRUE)
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{
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return result;
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}
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}
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return ConditionResult.TRUE;
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}
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}
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}
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