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 */ 020package org.apache.directory.api.ldap.codec.search; 021 022 023import java.nio.BufferOverflowException; 024import java.nio.ByteBuffer; 025import java.util.List; 026 027import org.apache.directory.api.asn1.EncoderException; 028import org.apache.directory.api.asn1.ber.tlv.TLV; 029import org.apache.directory.api.i18n.I18n; 030import org.apache.directory.api.ldap.codec.api.LdapCodecConstants; 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 */ 038public class AndFilter extends ConnectorFilter 039{ 040 /** 041 * The constructor. We wont initialize the ArrayList as they may not be 042 * used. 043 * 044 * @param tlvId The TLV identifier 045 */ 046 public AndFilter( int tlvId ) 047 { 048 super( tlvId ); 049 } 050 051 052 /** 053 * The constructor. We wont initialize the ArrayList as they may not be 054 * used. 055 */ 056 public AndFilter() 057 { 058 super(); 059 } 060 061 062 /** 063 * Get the AndFilter. 064 * 065 * @return Returns the andFilter. 066 */ 067 public List<Filter> getAndFilter() 068 { 069 return filterSet; 070 } 071 072 073 /** 074 * Compute the AndFilter length 075 * <br> 076 * AndFilter : 077 * <pre> 078 * 0xA0 L1 super.computeLength() 079 * 080 * Length(AndFilter) = Length(0xA0) + Length(super.computeLength()) + 081 * super.computeLength() 082 * </pre> 083 * 084 * @return The encoded length 085 */ 086 @Override 087 public int computeLength() 088 { 089 filtersLength = super.computeLength(); 090 091 return 1 + TLV.getNbBytes( filtersLength ) + filtersLength; 092 } 093 094 095 /** 096 * Encode the AndFilter message to a PDU. 097 * <br> 098 * AndFilter : 099 * <pre> 100 * 0xA0 LL 101 * filter.encode() ... filter.encode() 102 * </pre> 103 * 104 * @param buffer The buffer where to put the PDU 105 * @return The PDU. 106 */ 107 @Override 108 public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException 109 { 110 if ( buffer == null ) 111 { 112 throw new EncoderException( I18n.err( I18n.ERR_04023 ) ); 113 } 114 115 try 116 { 117 // The AndFilter Tag 118 buffer.put( ( byte ) LdapCodecConstants.AND_FILTER_TAG ); 119 buffer.put( TLV.getBytes( filtersLength ) ); 120 } 121 catch ( BufferOverflowException boe ) 122 { 123 throw new EncoderException( I18n.err( I18n.ERR_04005 ), boe ); 124 } 125 126 super.encode( buffer ); 127 128 return buffer; 129 } 130 131 132 /** 133 * Return a string compliant with RFC 2254 representing an AND filter 134 * 135 * @return The AND filter string 136 */ 137 @Override 138 public String toString() 139 { 140 StringBuilder sb = new StringBuilder(); 141 142 sb.append( '&' ).append( super.toString() ); 143 144 return sb.toString(); 145 } 146}