001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.directory.shared.ldap.model.schema.comparators; 021 022 023import org.apache.directory.shared.ldap.model.schema.LdapComparator; 024import org.slf4j.Logger; 025import org.slf4j.LoggerFactory; 026 027 028/** 029 * A comparator for TelephoneNumber. 030 * 031 * The rules for matching are identical to those for caseIgnoreMatch, except that 032 * all space and "-" characters are skipped during the comparison. 033 * 034 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 035 */ 036public class TelephoneNumberComparator extends LdapComparator<String> 037{ 038 /** The serial version UID */ 039 private static final long serialVersionUID = 2L; 040 041 /** A logger for this class */ 042 private static final Logger LOG = LoggerFactory.getLogger( TelephoneNumberComparator.class ); 043 044 /** 045 * The TelephoneNumberComparator constructor. Its OID is the TelephoneNumberMatch matching 046 * rule OID. 047 */ 048 public TelephoneNumberComparator( String oid ) 049 { 050 super( oid ); 051 } 052 053 054 /** 055 * Remove all spaces and '-' from the telephone number 056 */ 057 private String strip( String telephoneNumber ) 058 { 059 char[] telephoneNumberArray = telephoneNumber.toCharArray(); 060 int pos = 0; 061 062 for ( char c:telephoneNumberArray ) 063 { 064 if ( ( c == ' ' ) || ( c == '-' ) ) 065 { 066 continue; 067 } 068 069 telephoneNumberArray[pos++] = c; 070 } 071 072 return new String( telephoneNumberArray, 0, pos ); 073 } 074 075 076 /** 077 * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object) 078 */ 079 public int compare( String telephoneNumber1, String telephoneNumber2 ) 080 { 081 LOG.debug( "comparing TelephoneNumber objects '{}' with '{}'", telephoneNumber1, telephoneNumber2 ); 082 083 // ------------------------------------------------------------------- 084 // Handle some basis cases 085 // ------------------------------------------------------------------- 086 if ( telephoneNumber1 == null ) 087 { 088 return ( telephoneNumber2 == null ) ? 0 : -1; 089 } 090 091 if ( telephoneNumber2 == null ) 092 { 093 return 1; 094 } 095 096 // ------------------------------------------------------------------- 097 // Remove all spaces and '-' 098 // ------------------------------------------------------------------- 099 String strippedTelephoneNumber1 = strip( telephoneNumber1 ); 100 String strippedTelephoneNumber2 = strip( telephoneNumber2 ); 101 102 return ( strippedTelephoneNumber1.compareToIgnoreCase( strippedTelephoneNumber2 ) ); 103 } 104}