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 */
020 package org.apache.directory.shared.ldap.schema.syntaxes;
021
022 import java.text.ParseException;
023
024 import org.apache.directory.shared.ldap.aci.ACIItemChecker;
025 import org.apache.directory.shared.ldap.constants.SchemaConstants;
026 import org.apache.directory.shared.ldap.schema.AbstractSyntaxChecker;
027 import org.apache.directory.shared.ldap.util.StringTools;
028
029
030 /**
031 * A SyntaxChecker which verifies that a value is a valid ACIItem.
032 *
033 *
034 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
035 * @version $Rev: 488616 $
036 */
037 public class ACIItemSyntaxChecker extends AbstractSyntaxChecker
038 {
039 private ACIItemChecker checker = new ACIItemChecker();
040
041 /**
042 * Private default constructor to prevent unnecessary instantiation.
043 */
044 public ACIItemSyntaxChecker()
045 {
046 super( SchemaConstants.ACI_ITEM_SYNTAX );
047 }
048
049 /**
050 *
051 * Creates a new instance of ACIItemSyntaxChecker.
052 *
053 * @param oid the oid to associate with this new SyntaxChecker
054 *
055 */
056 protected ACIItemSyntaxChecker( String oid )
057 {
058 super( oid );
059 }
060
061 /**
062 * @see org.apache.directory.shared.ldap.schema.SyntaxChecker#isValidSyntax(Object)
063 *
064 * @param value the value of some attribute with the syntax
065 * @return true if the value is in the valid syntax, false otherwise
066 */
067 public boolean isValidSyntax( Object value )
068 {
069 String strValue = null;
070
071 if ( value == null )
072 {
073 return false;
074 }
075
076 if ( value instanceof String )
077 {
078 strValue = ( String ) value;
079 }
080 else if ( value instanceof byte[] )
081 {
082 strValue = StringTools.utf8ToString( ( byte[] ) value );
083 }
084 else
085 {
086 strValue = value.toString();
087 }
088
089 if ( strValue.length() == 0 )
090 {
091 return false;
092 }
093
094 try
095 {
096 synchronized( checker )
097 {
098 checker.parse( strValue );
099 }
100 return true;
101 }
102 catch ( ParseException pe )
103 {
104 return false;
105 }
106 }
107 }