| /* |
| * 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.shared.ldap.extras.extended.ads_impl; |
| |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.directory.shared.asn1.AbstractAsn1Object; |
| import org.apache.directory.shared.asn1.EncoderException; |
| import org.apache.directory.shared.asn1.ber.tlv.TLV; |
| import org.apache.directory.shared.asn1.ber.tlv.UniversalTag; |
| import org.apache.directory.shared.asn1.ber.tlv.Value; |
| |
| |
| /** |
| * An extended operation to proceed a Cancel operation, as described |
| * in RFC 3909 |
| * |
| * <pre> |
| * cancelRequestValue ::= SEQUENCE { |
| * cancelID MessageID |
| * -- MessageID is as defined in [RFC2251] |
| * } |
| * </pre> |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class Cancel extends AbstractAsn1Object |
| { |
| /** The Id of the the message to cancel */ |
| private int cancelId; |
| |
| /** Length of the sequence */ |
| private int cancelSequenceLength; |
| |
| /** |
| * Create a Cancel object, with a messageId |
| * |
| * @param cancelId The Id of the request to cancel |
| */ |
| public Cancel( int cancelId ) |
| { |
| this.cancelId = cancelId; |
| } |
| |
| |
| /** |
| * Default constructor. |
| */ |
| public Cancel() |
| { |
| super(); |
| } |
| |
| |
| /** |
| * Get the message Id of the request to cancel |
| * |
| * @return The id of the request to cancel |
| */ |
| public int getCancelId() |
| { |
| return cancelId; |
| } |
| |
| |
| /** |
| * Set the cancelId |
| * |
| * @param cancelId The Id of the request to cancel |
| */ |
| public void setCancelId( int cancelId ) |
| { |
| this.cancelId = cancelId; |
| } |
| |
| |
| /** |
| * Compute the Cancel length |
| * |
| * 0x30 L1 |
| * | |
| * +--> 0x02 0x0(1-4) [0..2^31-1] |
| */ |
| public int computeLength() |
| { |
| // The messageId length |
| cancelSequenceLength = 1 + 1 + Value.getNbBytes( cancelId ); |
| |
| // 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.shared.asn1.EncoderException If anything goes wrong. |
| */ |
| public ByteBuffer encode() throws EncoderException |
| { |
| // Allocate the bytes buffer. |
| ByteBuffer bb = ByteBuffer.allocate( computeLength() ); |
| |
| // The sequence |
| bb.put( UniversalTag.SEQUENCE.getValue() ); |
| bb.put( TLV.getBytes( cancelSequenceLength ) ); |
| |
| // The messageId |
| Value.encode( bb, cancelId ); |
| |
| return bb; |
| } |
| |
| |
| /** |
| * Return a string representation of the cancel |
| */ |
| public String toString() |
| { |
| StringBuffer sb = new StringBuffer(); |
| |
| sb.append( "Cancel extended operation" ); |
| sb.append( " cancelId : " ).append( cancelId ).append( '\n' ); |
| |
| return sb.toString(); |
| } |
| } |