| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.api.ldap.extras.extended.ads_impl.cancel; |
| |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.directory.api.asn1.Asn1Object; |
| import org.apache.directory.api.asn1.DecoderException; |
| import org.apache.directory.api.asn1.EncoderException; |
| import org.apache.directory.api.asn1.ber.tlv.BerValue; |
| import org.apache.directory.api.asn1.ber.tlv.TLV; |
| import org.apache.directory.api.asn1.ber.tlv.UniversalTag; |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.codec.api.ExtendedRequestDecorator; |
| import org.apache.directory.api.ldap.codec.api.LdapApiService; |
| import org.apache.directory.api.ldap.extras.extended.cancel.CancelRequest; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A Decorator for CancelRequests. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class CancelRequestDecorator extends ExtendedRequestDecorator<CancelRequest> implements |
| CancelRequest, Asn1Object |
| { |
| private static final Logger LOG = LoggerFactory.getLogger( CancelRequestDecorator.class ); |
| |
| /** The Id of the the message to cancel */ |
| private CancelRequest cancelRequest; |
| |
| /** Length of the sequence */ |
| private int cancelSequenceLength; |
| |
| |
| public CancelRequestDecorator( LdapApiService codec, CancelRequest decoratedMessage ) |
| { |
| super( codec, decoratedMessage ); |
| cancelRequest = decoratedMessage; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public int getCancelId() |
| { |
| return cancelRequest.getCancelId(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setCancelId( int cancelId ) |
| { |
| if ( cancelId == cancelRequest.getCancelId() ) |
| { |
| return; |
| } |
| |
| this.requestValue = null; |
| cancelRequest.setCancelId( cancelId ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public byte[] getRequestValue() |
| { |
| if ( requestValue == null ) |
| { |
| try |
| { |
| requestValue = encodeInternal().array(); |
| } |
| catch ( EncoderException e ) |
| { |
| LOG.error( I18n.err( I18n.ERR_04164 ), e ); |
| throw new RuntimeException( e ); |
| } |
| } |
| |
| return requestValue; |
| } |
| |
| |
| /** |
| * Sets the extended request's <b>requestValue</b> portion of the PDU. |
| * |
| * @param payload byte array of data encapsulating ext. req. parameters |
| */ |
| @Override |
| public void setRequestValue( byte[] requestValue ) |
| { |
| CancelDecoder decoder = new CancelDecoder(); |
| |
| try |
| { |
| if ( requestValue != null ) |
| { |
| CancelRequest cancel = decoder.decode( requestValue ); |
| cancelRequest.setCancelId( cancel.getCancelId() ); |
| |
| this.requestValue = new byte[requestValue.length]; |
| System.arraycopy( requestValue, 0, this.requestValue, 0, requestValue.length ); |
| } |
| else |
| { |
| this.requestValue = null; |
| cancelRequest.setCancelId( 0 ); |
| } |
| |
| } |
| catch ( DecoderException e ) |
| { |
| LOG.error( I18n.err( I18n.ERR_04165 ), e ); |
| throw new RuntimeException( e ); |
| } |
| } |
| |
| |
| /** |
| * Compute the Cancel length |
| * |
| * 0x30 L1 |
| * | |
| * +--> 0x02 0x0(1-4) [0..2^31-1] |
| */ |
| /* no qualifier */int computeLengthInternal() |
| { |
| // The messageId length |
| cancelSequenceLength = 1 + 1 + BerValue.getNbBytes( cancelRequest.getCancelId() ); |
| |
| // Add the sequence and the length |
| return 1 + 1 + cancelSequenceLength; |
| } |
| |
| |
| /** |
| * Encodes the cancel extended operation. |
| * |
| * @return A ByteBuffer that contains the encoded PDU |
| * @throws org.apache.directory.api.asn1.EncoderException If anything goes wrong. |
| */ |
| /* no qualifier */ByteBuffer encodeInternal() throws EncoderException |
| { |
| // Allocate the bytes buffer. |
| ByteBuffer bb = ByteBuffer.allocate( computeLengthInternal() ); |
| |
| // The sequence |
| bb.put( UniversalTag.SEQUENCE.getValue() ); |
| bb.put( TLV.getBytes( cancelSequenceLength ) ); |
| |
| // The messageId |
| BerValue.encode( bb, cancelRequest.getCancelId() ); |
| |
| return bb; |
| } |
| } |