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 * @param oid The Comparator's OID 047 */ 048 public BooleanComparator( String oid ) 049 { 050 super( oid ); 051 } 052 053 054 /** 055 * {@inheritDoc} 056 */ 057 public int compare( String b1, String b2 ) 058 { 059 LOG.debug( "comparing boolean objects '{}' with '{}'", b1, b2 ); 060 061 // First, shortcut the process by comparing 062 // references. If they are equals, then o1 and o2 063 // reference the same object 064 if ( b1 == b2 ) 065 { 066 return 0; 067 } 068 069 // Then, deal with one of o1 or o2 being null 070 // Both can't be null, because then they would 071 // have been catched by the previous test 072 if ( ( b1 == null ) || ( b2 == null ) ) 073 { 074 return b1 == null ? -1 : 1; 075 } 076 077 // The boolean should have been stored as 'TRUE' or 'FALSE' 078 // into the server, and the compare method will be called 079 // with normalized booleans, so no need to upper case them. 080 // We don't need to check the assertion value, because we 081 // are dealing with booleans. 082 boolean boolean1 = Boolean.parseBoolean( b1 ); 083 boolean boolean2 = Boolean.parseBoolean( b2 ); 084 085 if ( boolean1 == boolean2 ) 086 { 087 return 0; 088 } 089 090 return boolean1 ? 1 : -1; 091 } 092}