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 */ 020 package org.apache.directory.shared.ldap.schema.comparators; 021 022 023 import org.apache.directory.shared.i18n.I18n; 024 import org.apache.directory.shared.ldap.schema.LdapComparator; 025 026 027 /** 028 * Compares Long keys and values within a table. 029 * 030 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 031 * @version $Revision: 437007 $ 032 */ 033 public class LongComparator extends LdapComparator<Long> 034 { 035 /** 036 * Version id for serialization. 037 */ 038 static final long serialVersionUID = 1L; 039 040 /** 041 * The LongComparator constructor. Its OID is the IntegerOrderingMatch matching 042 * rule OID. 043 */ 044 public LongComparator( String oid ) 045 { 046 super( oid ); 047 } 048 049 050 /** 051 * Compare two objects. 052 * 053 * @param obj1 First object 054 * @param obj2 Second object 055 * @return 1 if obj1 > obj2, 0 if obj1 == obj2, -1 if obj1 < obj2 056 */ 057 public int compare( Long obj1, Long obj2 ) 058 { 059 try 060 { 061 return obj1.compareTo( obj2 ); 062 } 063 catch ( NullPointerException npe ) 064 { 065 if ( obj1 == null ) 066 { 067 throw new IllegalArgumentException( I18n.err( I18n.ERR_04219 ) ); 068 } 069 else 070 { 071 throw new IllegalArgumentException( I18n.err( I18n.ERR_04220 )); 072 } 073 } 074 } 075 }