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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   *    http://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.syntaxCheckers;
21  
22  
23  import org.apache.directory.api.ldap.model.constants.SchemaConstants;
24  import org.apache.directory.api.ldap.model.schema.SyntaxChecker;
25  import org.apache.directory.api.util.Strings;
26  import org.slf4j.Logger;
27  import org.slf4j.LoggerFactory;
28  
29  
30  /**
31   * A SyntaxChecker which verifies that a value is a Boolean according to RFC 1778.
32   * 
33   * From RFC 1778 :
34   * 
35   * <mail-preference> ::= "NO-LISTS" | "ANY-LIST" | "PROFESSIONAL-LISTS"
36   * 
37   *
38   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
39   */
40  @SuppressWarnings("serial")
41  public class MailPreferenceSyntaxChecker extends SyntaxChecker
42  {
43      /** A logger for this class */
44      private static final Logger LOG = LoggerFactory.getLogger( MailPreferenceSyntaxChecker.class );
45  
46  
47      /**
48       * Creates a new instance of MailPreferenceSyntaxChecker.
49       */
50      public MailPreferenceSyntaxChecker()
51      {
52          super( SchemaConstants.MAIL_PREFERENCE_SYNTAX );
53      }
54  
55  
56      /**
57       * 
58       * Creates a new instance of MailPreferenceSyntaxChecker.
59       * 
60       * @param oid the oid to associate with this new SyntaxChecker
61       *
62       */
63      protected MailPreferenceSyntaxChecker( String oid )
64      {
65          super( oid );
66      }
67  
68  
69      /**
70       * {@inheritDoc}
71       */
72      public boolean isValidSyntax( Object value )
73      {
74          String strValue = null;
75  
76          if ( value == null )
77          {
78              LOG.debug( "Syntax invalid for 'null'" );
79              return false;
80          }
81  
82          if ( value instanceof String )
83          {
84              strValue = ( String ) value;
85          }
86          else if ( value instanceof byte[] )
87          {
88              strValue = Strings.utf8ToString( ( byte[] ) value );
89          }
90          else
91          {
92              strValue = value.toString();
93          }
94  
95          if ( ( strValue.length() < 8 ) || ( strValue.length() > 18 ) )
96          {
97              LOG.debug( "Syntax invalid for '{}'", value );
98              return false;
99          }
100 
101         boolean result = ( ( "NO-LISTS".equals( strValue ) ) || ( "ANY-LIST".equals( strValue ) )
102             || ( "PROFESSIONAL-LISTS".equals( strValue ) ) );
103 
104         if ( result )
105         {
106             LOG.debug( "Syntax valid for '{}'", value );
107         }
108         else
109         {
110             LOG.debug( "Syntax invalid for '{}'", value );
111         }
112 
113         return result;
114     }
115 }