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 org.apache.directory.shared.ldap.constants.SchemaConstants;
023    
024    
025    /**
026     * A SyntaxChecker which verifies that a value is a SubstringAssertion 
027     * according to RFC 4517.
028     * 
029     * Implemented as binary right now ...
030     *  
031     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
032     * @version $Rev: 488616 $
033     */
034    public class SubstringAssertionSyntaxChecker extends BinarySyntaxChecker
035    {
036        /**
037         * Private default constructor to prevent unnecessary instantiation.
038         */
039        public SubstringAssertionSyntaxChecker()
040        {
041            super( SchemaConstants.SUBSTRING_ASSERTION_SYNTAX );
042        }
043    
044        /**
045         * 
046         * Creates a new instance of SubstringAssertionSyntaxChecker.
047         * 
048         * @param oid the oid to associate with this new SyntaxChecker
049         *
050         */
051        protected SubstringAssertionSyntaxChecker( String oid )
052        {
053            super( oid );
054        }
055        
056        /**
057         * @see org.apache.directory.shared.ldap.schema.SyntaxChecker#isValidSyntax(Object)
058         * 
059         * @param value the value of some attribute with the syntax
060         * @return true if the value is in the valid syntax, false otherwise
061         */
062        public boolean isValidSyntax( Object value )
063        {
064            return true;
065        }
066    }