1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * https://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.directory.api.ldap.model.schema.comparators;
21
22
23 import org.apache.directory.api.i18n.I18n;
24 import org.apache.directory.api.ldap.model.schema.LdapComparator;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
27
28
29 /**
30 * A class for the BooleanComparator matchingRule (RFC 4517, par. 4.2.2)
31 *
32 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
33 */
34 public class BooleanComparator extends LdapComparator<String>
35 {
36 /** The serial version UID */
37 private static final long serialVersionUID = 2L;
38
39 /** A logger for this class */
40 private static final Logger LOG = LoggerFactory.getLogger( BooleanComparator.class );
41
42
43 /**
44 * The BooleanComparator constructor. Its OID is the BooleanMatch matching
45 * rule OID.
46 *
47 * @param oid The Comparator's OID
48 */
49 public BooleanComparator( String oid )
50 {
51 super( oid );
52 }
53
54
55 /**
56 * {@inheritDoc}
57 */
58 public int compare( String b1, String b2 )
59 {
60 if ( LOG.isDebugEnabled() )
61 {
62 LOG.debug( I18n.msg( I18n.MSG_13752_COMPARING_BOOLEAN, b1, b2 ) );
63 }
64
65 // First, shortcut the process by comparing
66 // references. If they are equals, then o1 and o2
67 // reference the same object
68 if ( b1 == b2 )
69 {
70 return 0;
71 }
72
73 // Then, deal with one of o1 or o2 being null
74 // Both can't be null, because then they would
75 // have been catched by the previous test
76 if ( ( b1 == null ) || ( b2 == null ) )
77 {
78 return b1 == null ? -1 : 1;
79 }
80
81 // The boolean should have been stored as 'TRUE' or 'FALSE'
82 // into the server, and the compare method will be called
83 // with normalized booleans, so no need to upper case them.
84 // We don't need to check the assertion value, because we
85 // are dealing with booleans.
86 boolean boolean1 = Boolean.parseBoolean( b1 );
87 boolean boolean2 = Boolean.parseBoolean( b2 );
88
89 if ( boolean1 == boolean2 )
90 {
91 return 0;
92 }
93
94 return boolean1 ? 1 : -1;
95 }
96 }