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.extended.operations.cancel; 021 022 023 import java.nio.ByteBuffer; 024 025 import org.apache.directory.shared.asn1.Asn1Object; 026 import org.apache.directory.shared.asn1.ber.Asn1Decoder; 027 import org.apache.directory.shared.asn1.codec.DecoderException; 028 029 030 /** 031 * A decoder for Cancel. 032 * 033 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 034 * @version $Rev: 664290 $, $Date: 2008-06-07 08:28:06 +0200 (Sat, 07 Jun 2008) $, 035 */ 036 public class CancelDecoder extends Asn1Decoder 037 { 038 /** The decoder */ 039 private static final Asn1Decoder decoder = new Asn1Decoder(); 040 041 042 /** 043 * Decode a PDU which must contain a Cancel extended operation. 044 * Note that the stream of bytes much contain a full PDU, not a partial one. 045 * 046 * @param stream The bytes to be decoded 047 * @return An Cancel object 048 * @throws DecoderException If the decoding failed 049 */ 050 public Asn1Object decode( byte[] stream ) throws DecoderException 051 { 052 ByteBuffer bb = ByteBuffer.wrap( stream ); 053 CancelContainer container = new CancelContainer(); 054 decoder.decode( bb, container ); 055 Cancel cancel = container.getCancel(); 056 057 // Clean the container for the next decoding 058 container.clean(); 059 060 return cancel; 061 } 062 }