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.controls; 021 022 023 import java.nio.ByteBuffer; 024 025 import org.apache.directory.shared.asn1.ber.tlv.Value; 026 import org.apache.directory.shared.asn1.codec.EncoderException; 027 import org.apache.directory.shared.i18n.I18n; 028 import org.apache.directory.shared.ldap.util.StringTools; 029 030 031 /** 032 * A genericcodec Control. 033 * 034 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 035 * @version $Rev: 764131 $, $Date: 2009-04-11 03:03:00 +0200 (Sat, 11 Apr 2009) $, 036 */ 037 public class ControlImpl extends AbstractControl 038 { 039 /** 040 * Default constructor. 041 */ 042 public ControlImpl( String oid ) 043 { 044 super( oid ); 045 046 decoder = null; 047 } 048 049 050 /** 051 * Set the encoded control value 052 * 053 * @param encodedValue The encoded control value to store 054 */ 055 public void setValue( byte[] value ) 056 { 057 if ( value != null ) 058 { 059 this.value = new byte[ value.length ]; 060 System.arraycopy( value, 0, this.value, 0, value.length ); 061 } 062 else 063 { 064 this.value = null; 065 } 066 } 067 068 069 /** 070 * Get the raw control encoded bytes 071 * 072 * @return the encoded bytes for the control 073 */ 074 public byte[] getValue() 075 { 076 if ( value == null ) 077 { 078 return StringTools.EMPTY_BYTES; 079 } 080 081 final byte[] copy = new byte[ value.length ]; 082 System.arraycopy( value, 0, copy, 0, value.length ); 083 return copy; 084 } 085 086 087 /** 088 * {@inheritDoc} 089 */ 090 @Override 091 public int computeLength() 092 { 093 if ( value != null ) 094 { 095 return super.computeLength( value.length ); 096 } 097 else 098 { 099 return super.computeLength( 0 ); 100 } 101 } 102 103 104 /** 105 * {@inheritDoc} 106 */ 107 public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException 108 { 109 if ( buffer == null ) 110 { 111 throw new EncoderException( I18n.err( I18n.ERR_04023 ) ); 112 } 113 114 // Encode the Control envelop 115 super.encode( buffer ); 116 117 // If we have a value, encode it 118 if ( value != null ) 119 { 120 Value.encode( buffer, value ); 121 } 122 123 return buffer; 124 } 125 }