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 org.apache.directory.api.ldap.model.schema.LdapComparator; 024import org.slf4j.Logger; 025import org.slf4j.LoggerFactory; 026 027 028/** 029 * A class for the BooleanComparator matchingRule (RFC 4517, par. 4.2.2) 030 * 031 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 032 */ 033public class BooleanComparator extends LdapComparator<String> 034{ 035 /** The serial version UID */ 036 private static final long serialVersionUID = 2L; 037 038 /** A logger for this class */ 039 private static final Logger LOG = LoggerFactory.getLogger( BooleanComparator.class ); 040 041 042 /** 043 * The BooleanComparator constructor. Its OID is the BooleanMatch matching 044 * rule OID. 045 */ 046 public BooleanComparator( String oid ) 047 { 048 super( oid ); 049 } 050 051 052 /** 053 * Implementation of the Compare method 054 */ 055 public int compare( String b1, String b2 ) 056 { 057 LOG.debug( "comparing boolean objects '{}' with '{}'", b1, b2 ); 058 059 // First, shortcut the process by comparing 060 // references. If they are equals, then o1 and o2 061 // reference the same object 062 if ( b1 == b2 ) 063 { 064 return 0; 065 } 066 067 // Then, deal with one of o1 or o2 being null 068 // Both can't be null, because then they would 069 // have been catched by the previous test 070 if ( ( b1 == null ) || ( b2 == null ) ) 071 { 072 return ( b1 == null ? -1 : 1 ); 073 } 074 075 // The boolean should have been stored as 'TRUE' or 'FALSE' 076 // into the server, and the compare method will be called 077 // with normalized booleans, so no need to upper case them. 078 // We don't need to check the assertion value, because we 079 // are dealing with booleans. 080 boolean boolean1 = Boolean.valueOf( b1 ); 081 boolean boolean2 = Boolean.valueOf( b2 ); 082 083 if ( boolean1 == boolean2 ) 084 { 085 return 0; 086 } 087 088 return ( boolean1 ? 1 : -1 ); 089 } 090}