/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
|
* or http://forgerock.org/license/CDDLv1.0.html.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at legal-notices/CDDLv1_0.txt.
|
* If applicable, add the following below this CDDL HEADER, with the
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
* information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Copyright 2009 Sun Microsystems, Inc.
|
*/
|
package org.forgerock.opendj.ldap.schema;
|
|
import static com.forgerock.opendj.util.StringPrepProfile.CASE_FOLD;
|
import static com.forgerock.opendj.util.StringPrepProfile.TRIM;
|
import static com.forgerock.opendj.util.StringPrepProfile.prepareUnicode;
|
|
import org.forgerock.opendj.ldap.Assertion;
|
import org.forgerock.opendj.ldap.ByteSequence;
|
import org.forgerock.opendj.ldap.ByteString;
|
import org.forgerock.opendj.ldap.ConditionResult;
|
import org.forgerock.opendj.ldap.DecodeException;
|
|
/**
|
* This class implements the wordMatch matching rule defined in X.520. That
|
* document defines "word" as implementation-specific, but in this case we will
|
* consider it a match if the assertion value is contained within the attribute
|
* value and is bounded by the edge of the value or any of the following
|
* characters: <BR>
|
* <UL>
|
* <LI>A space</LI>
|
* <LI>A period</LI>
|
* <LI>A comma</LI>
|
* <LI>A slash</LI>
|
* <LI>A dollar sign</LI>
|
* <LI>A plus sign</LI>
|
* <LI>A dash</LI>
|
* <LI>An underscore</LI>
|
* <LI>An octothorpe</LI>
|
* <LI>An equal sign</LI>
|
* </UL>
|
*/
|
final class WordEqualityMatchingRuleImpl extends AbstractMatchingRuleImpl {
|
@Override
|
public Assertion getAssertion(final Schema schema, final ByteSequence value)
|
throws DecodeException {
|
final String normalStr = normalize(value);
|
|
return new Assertion() {
|
public ConditionResult matches(final ByteSequence attributeValue) {
|
// See if the assertion value is contained in the attribute
|
// value. If not, then it isn't a match.
|
final String valueStr1 = attributeValue.toString();
|
|
final int pos = valueStr1.indexOf(normalStr);
|
if (pos < 0) {
|
return ConditionResult.FALSE;
|
}
|
|
if (pos > 0) {
|
final char c = valueStr1.charAt(pos - 1);
|
switch (c) {
|
case ' ':
|
case '.':
|
case ',':
|
case '/':
|
case '$':
|
case '+':
|
case '-':
|
case '_':
|
case '#':
|
case '=':
|
// These are all acceptable.
|
break;
|
|
default:
|
// Anything else is not.
|
return ConditionResult.FALSE;
|
}
|
}
|
|
if (valueStr1.length() > pos + normalStr.length()) {
|
final char c = valueStr1.charAt(pos + normalStr.length());
|
switch (c) {
|
case ' ':
|
case '.':
|
case ',':
|
case '/':
|
case '$':
|
case '+':
|
case '-':
|
case '_':
|
case '#':
|
case '=':
|
// These are all acceptable.
|
break;
|
|
default:
|
// Anything else is not.
|
return ConditionResult.FALSE;
|
}
|
}
|
|
// If we've gotten here, then we can assume it is a match.
|
return ConditionResult.TRUE;
|
}
|
};
|
}
|
|
public ByteString normalizeAttributeValue(final Schema schema, final ByteSequence value) {
|
return ByteString.valueOf(normalize(value));
|
}
|
|
private String normalize(final ByteSequence value) {
|
final StringBuilder buffer = new StringBuilder();
|
prepareUnicode(buffer, value, TRIM, CASE_FOLD);
|
|
final int bufferLength = buffer.length();
|
if (bufferLength == 0) {
|
if (value.length() > 0) {
|
// This should only happen if the value is composed entirely of
|
// spaces. In that case, the normalized value is a single space.
|
return " ".intern();
|
} else {
|
// The value is empty, so it is already normalized.
|
return "".intern();
|
}
|
}
|
|
// Replace any consecutive spaces with a single space.
|
for (int pos = bufferLength - 1; pos > 0; pos--) {
|
if (buffer.charAt(pos) == ' ') {
|
if (buffer.charAt(pos - 1) == ' ') {
|
buffer.delete(pos, pos + 1);
|
}
|
}
|
}
|
|
return buffer.toString();
|
}
|
}
|
