001 /* 002 * CDDL HEADER START 003 * 004 * The contents of this file are subject to the terms of the 005 * Common Development and Distribution License, Version 1.0 only 006 * (the "License"). You may not use this file except in compliance 007 * with the License. 008 * 009 * You can obtain a copy of the license at 010 * trunk/opends/resource/legal-notices/OpenDS.LICENSE 011 * or https://OpenDS.dev.java.net/OpenDS.LICENSE. 012 * See the License for the specific language governing permissions 013 * and limitations under the License. 014 * 015 * When distributing Covered Code, include this CDDL HEADER in each 016 * file and include the License file at 017 * trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable, 018 * add the following below this CDDL HEADER, with the fields enclosed 019 * by brackets "[]" replaced with your own identifying information: 020 * Portions Copyright [yyyy] [name of copyright owner] 021 * 022 * CDDL HEADER END 023 * 024 * 025 * Copyright 2006-2008 Sun Microsystems, Inc. 026 */ 027 package org.opends.server.schema; 028 029 030 031 import java.util.Arrays; 032 033 import org.opends.server.admin.std.server.EqualityMatchingRuleCfg; 034 import org.opends.server.api.EqualityMatchingRule; 035 import org.opends.server.config.ConfigException; 036 import org.opends.server.protocols.asn1.ASN1OctetString; 037 import org.opends.server.types.ByteString; 038 import org.opends.server.types.DirectoryException; 039 import org.opends.server.types.InitializationException; 040 041 import static org.opends.server.schema.SchemaConstants.*; 042 import static org.opends.server.util.StaticUtils.*; 043 044 045 046 /** 047 * This class implements the presentationAddressMatch matching rule defined in 048 * X.520 and referenced in RFC 2252. However, since this matching rule and the 049 * associated syntax have been deprecated, this matching rule behaves exactly 050 * like the caseIgnoreMatch rule. 051 */ 052 public class PresentationAddressEqualityMatchingRule 053 extends EqualityMatchingRule 054 { 055 /** 056 * Creates a new instance of this presentationAddressMatch matching rule. 057 */ 058 public PresentationAddressEqualityMatchingRule() 059 { 060 super(); 061 } 062 063 064 065 /** 066 * {@inheritDoc} 067 */ 068 public void initializeMatchingRule(EqualityMatchingRuleCfg configuration) 069 throws ConfigException, InitializationException 070 { 071 // No initialization is required. 072 } 073 074 075 076 /** 077 * Retrieves the common name for this matching rule. 078 * 079 * @return The common name for this matching rule, or <CODE>null</CODE> if 080 * it does not have a name. 081 */ 082 public String getName() 083 { 084 return EMR_PRESENTATION_ADDRESS_NAME; 085 } 086 087 088 089 /** 090 * Retrieves the OID for this matching rule. 091 * 092 * @return The OID for this matching rule. 093 */ 094 public String getOID() 095 { 096 return EMR_PRESENTATION_ADDRESS_OID; 097 } 098 099 100 101 /** 102 * Retrieves the description for this matching rule. 103 * 104 * @return The description for this matching rule, or <CODE>null</CODE> if 105 * there is none. 106 */ 107 public String getDescription() 108 { 109 // There is no standard description for this matching rule. 110 return null; 111 } 112 113 114 115 /** 116 * Retrieves the OID of the syntax with which this matching rule is 117 * associated. 118 * 119 * @return The OID of the syntax with which this matching rule is associated. 120 */ 121 public String getSyntaxOID() 122 { 123 return SYNTAX_PRESENTATION_ADDRESS_OID; 124 } 125 126 127 128 /** 129 * Retrieves the normalized form of the provided value, which is best suited 130 * for efficiently performing matching operations on that value. 131 * 132 * @param value The value to be normalized. 133 * 134 * @return The normalized version of the provided value. 135 * 136 * @throws DirectoryException If the provided value is invalid according to 137 * the associated attribute syntax. 138 */ 139 public ByteString normalizeValue(ByteString value) 140 throws DirectoryException 141 { 142 StringBuilder buffer = new StringBuilder(); 143 toLowerCase(value.value(), buffer, true); 144 145 int bufferLength = buffer.length(); 146 if (bufferLength == 0) 147 { 148 if (value.value().length > 0) 149 { 150 // This should only happen if the value is composed entirely of spaces. 151 // In that case, the normalized value is a single space. 152 return new ASN1OctetString(" "); 153 } 154 else 155 { 156 // The value is empty, so it is already normalized. 157 return new ASN1OctetString(); 158 } 159 } 160 161 162 // Replace any consecutive spaces with a single space. 163 for (int pos = bufferLength-1; pos > 0; pos--) 164 { 165 if (buffer.charAt(pos) == ' ') 166 { 167 if (buffer.charAt(pos-1) == ' ') 168 { 169 buffer.delete(pos, pos+1); 170 } 171 } 172 } 173 174 return new ASN1OctetString(buffer.toString()); 175 } 176 177 178 179 /** 180 * Indicates whether the two provided normalized values are equal to each 181 * other. 182 * 183 * @param value1 The normalized form of the first value to compare. 184 * @param value2 The normalized form of the second value to compare. 185 * 186 * @return <CODE>true</CODE> if the provided values are equal, or 187 * <CODE>false</CODE> if not. 188 */ 189 public boolean areEqual(ByteString value1, ByteString value2) 190 { 191 // Since the values are already normalized, we just need to compare the 192 // associated byte arrays. 193 return Arrays.equals(value1.value(), value2.value()); 194 } 195 } 196