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.api.ldap.model.schema.comparators; 021 022 023import java.io.IOException; 024import java.io.Serializable; 025import java.math.BigInteger; 026 027import org.apache.directory.api.i18n.I18n; 028import org.apache.directory.api.ldap.model.schema.LdapComparator; 029import org.apache.directory.api.ldap.model.schema.PrepareString; 030import org.slf4j.Logger; 031import org.slf4j.LoggerFactory; 032 033 034/** 035 * A class for the integerOrderingMatch matchingRule (RFC 4517, par. 4.2.20) 036 * 037 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 038 */ 039public class IntegerComparator extends LdapComparator<Object> implements Serializable 040{ 041 /** The serial version UID */ 042 private static final long serialVersionUID = 2L; 043 044 /** A logger for this class */ 045 private static final Logger LOG = LoggerFactory.getLogger( IntegerComparator.class ); 046 047 048 /** 049 * The IntegerComparator constructor. Its OID is the IntegerOrderingMatch matching 050 * rule OID. 051 * 052 * @param oid The Comparator's OID 053 */ 054 public IntegerComparator( String oid ) 055 { 056 super( oid ); 057 } 058 059 060 /** 061 * {@inheritDoc} 062 */ 063 @Override 064 public int compare( Object v1, Object v2 ) 065 { 066 if ( v1 instanceof String ) 067 { 068 return compare( ( String ) v1, ( String ) v2 ); 069 } 070 else 071 { 072 return compare( ( Long ) v1, ( Long ) v2 ); 073 } 074 } 075 076 077 /** 078 * Implementation of the Compare method 079 */ 080 private int compare( Long backendValue, Long assertValue ) 081 { 082 LOG.debug( "comparing Integer objects '{}' with '{}'", backendValue, assertValue ); 083 084 // First, shortcut the process by comparing 085 // references. If they are equals, then o1 and o2 086 // reference the same object 087 if ( backendValue == assertValue ) 088 { 089 return 0; 090 } 091 092 // Then, deal with one of o1 or o2 being null 093 // Both can't be null, because then they would 094 // have been caught by the previous test 095 if ( ( backendValue == null ) || ( assertValue == null ) ) 096 { 097 return backendValue == null ? -1 : 1; 098 } 099 100 return backendValue.compareTo( assertValue ); 101 } 102 103 104 /** 105 * Implementation of the Compare method 106 */ 107 private int compare( String backendValue, String assertValue ) 108 { 109 LOG.debug( "comparing Integer objects '{}' with '{}'", backendValue, assertValue ); 110 111 // First, shortcut the process by comparing 112 // references. If they are equals, then o1 and o2 113 // reference the same object 114 if ( backendValue == assertValue ) 115 { 116 return 0; 117 } 118 119 // Then, deal with one of o1 or o2 being null 120 // Both can't be null, because then they would 121 // have been caught by the previous test 122 if ( ( backendValue == null ) || ( assertValue == null ) ) 123 { 124 return backendValue == null ? -1 : 1; 125 } 126 127 // Both objects must be stored as String for numeric. 128 // But we need to normalize the values first. 129 try 130 { 131 backendValue = PrepareString.normalize( backendValue, PrepareString.StringType.NUMERIC_STRING ); 132 } 133 catch ( IOException ioe ) 134 { 135 throw new IllegalArgumentException( I18n.err( I18n.ERR_04224, backendValue ), ioe ); 136 } 137 try 138 { 139 assertValue = PrepareString.normalize( assertValue, PrepareString.StringType.NUMERIC_STRING ); 140 } 141 catch ( IOException ioe ) 142 { 143 throw new IllegalArgumentException( I18n.err( I18n.ERR_04224, assertValue ), ioe ); 144 } 145 146 BigInteger b1 = new BigInteger( backendValue ); 147 BigInteger b2 = new BigInteger( assertValue ); 148 149 return b1.compareTo( b2 ); 150 } 151}