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.codec.search; 021 022 023 import java.nio.BufferOverflowException; 024 import java.nio.ByteBuffer; 025 import java.util.List; 026 027 import org.apache.directory.shared.asn1.ber.tlv.TLV; 028 import org.apache.directory.shared.asn1.codec.EncoderException; 029 import org.apache.directory.shared.i18n.I18n; 030 import org.apache.directory.shared.ldap.codec.LdapConstants; 031 032 033 /** 034 * And Filter Object to store the And filter. 035 * 036 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 037 * @version $Rev: 912399 $, $Date: 2010-02-21 21:52:31 +0100 (Sun, 21 Feb 2010) $, 038 */ 039 public class AndFilter extends ConnectorFilter 040 { 041 // ~ Methods 042 // ------------------------------------------------------------------------------------ 043 044 /** 045 * The constructor. We wont initialize the ArrayList as they may not be 046 * used. 047 */ 048 public AndFilter( int tlvId ) 049 { 050 super( tlvId ); 051 } 052 053 054 /** 055 * The constructor. We wont initialize the ArrayList as they may not be 056 * used. 057 */ 058 public AndFilter() 059 { 060 super(); 061 } 062 063 064 /** 065 * Get the AndFilter. 066 * 067 * @return Returns the andFilter. 068 */ 069 public List<Filter> getAndFilter() 070 { 071 return filterSet; 072 } 073 074 075 /** 076 * Compute the AndFilter length 077 * 078 * AndFilter : 079 * 0xA0 L1 super.computeLength() 080 * 081 * Length(AndFilter) = Length(0xA0) + Length(super.computeLength()) + 082 * super.computeLength() 083 */ 084 public int computeLength() 085 { 086 filtersLength = super.computeLength(); 087 088 return 1 + TLV.getNbBytes( filtersLength ) + filtersLength; 089 } 090 091 092 /** 093 * Encode the AndFilter message to a PDU. 094 * 095 * AndFilter : 096 * 0xA0 LL 097 * filter.encode() ... filter.encode() 098 * 099 * @param buffer The buffer where to put the PDU 100 * @return The PDU. 101 */ 102 public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException 103 { 104 if ( buffer == null ) 105 { 106 throw new EncoderException( I18n.err( I18n.ERR_04023 ) ); 107 } 108 109 try 110 { 111 // The AndFilter Tag 112 buffer.put( ( byte ) LdapConstants.AND_FILTER_TAG ); 113 buffer.put( TLV.getBytes( filtersLength ) ); 114 } 115 catch ( BufferOverflowException boe ) 116 { 117 throw new EncoderException( I18n.err( I18n.ERR_04005 ) ); 118 } 119 120 super.encode( buffer ); 121 122 return buffer; 123 } 124 125 126 /** 127 * Return a string compliant with RFC 2254 representing an AND filter 128 * 129 * @return The AND filter string 130 */ 131 public String toString() 132 { 133 StringBuffer sb = new StringBuffer(); 134 135 sb.append( '&' ).append( super.toString() ); 136 137 return sb.toString(); 138 } 139 }