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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.aci;
21  
22  
23  import java.text.ParseException;
24  
25  import org.apache.directory.api.ldap.model.constants.SchemaConstants;
26  import org.apache.directory.api.ldap.model.schema.SchemaManager;
27  import org.apache.directory.api.ldap.model.schema.SyntaxChecker;
28  import org.apache.directory.api.util.Strings;
29  import org.slf4j.Logger;
30  import org.slf4j.LoggerFactory;
31  
32  
33  /**
34   * A SyntaxChecker which verifies that a value is a valid ACIItem.
35   * 
36   *  
37   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
38   */
39  @SuppressWarnings("serial")
40  public class ACIItemSyntaxChecker extends SyntaxChecker
41  {
42      /** A logger for this class */
43      private static final Logger LOG = LoggerFactory.getLogger( ACIItemSyntaxChecker.class );
44  
45      /** An instance of ACI Item Checker */
46      private ACIItemChecker aciItemChecker;
47  
48  
49      /**
50       * Creates a new instance of ACIItemSyntaxChecker
51       */
52      public ACIItemSyntaxChecker()
53      {
54          super( SchemaConstants.ACI_ITEM_SYNTAX );
55      }
56  
57  
58      /**
59       * {@inheritDoc}
60       */
61      public boolean isValidSyntax( Object value )
62      {
63          String strValue = null;
64  
65          if ( value == null )
66          {
67              LOG.debug( "Syntax invalid for 'null'" );
68              return false;
69          }
70  
71          if ( value instanceof String )
72          {
73              strValue = ( String ) value;
74          }
75          else if ( value instanceof byte[] )
76          {
77              strValue = Strings.utf8ToString( ( byte[] ) value );
78          }
79          else
80          {
81              strValue = value.toString();
82          }
83  
84          if ( strValue.length() == 0 )
85          {
86              LOG.debug( "Syntax invalid for '{}'", value );
87              return false;
88          }
89  
90          try
91          {
92              synchronized ( aciItemChecker )
93              {
94                  aciItemChecker.parse( strValue );
95              }
96  
97              LOG.debug( "Syntax valid for '{}'", value );
98              return true;
99          }
100         catch ( ParseException pe )
101         {
102             LOG.debug( "Syntax invalid for '{}'", value );
103             return false;
104         }
105     }
106 
107 
108     /**
109      * {@inheritDoc}
110      */
111     public void setSchemaManager( SchemaManager schemaManager )
112     {
113         aciItemChecker = new ACIItemChecker( schemaManager );
114     }
115 }