01 /*
02 *
03 * Licensed to the Apache Software Foundation (ASF) under one
04 * or more contributor license agreements. See the NOTICE file
05 * distributed with this work for additional information
06 * regarding copyright ownership. The ASF licenses this file
07 * to you under the Apache License, Version 2.0 (the
08 * "License"); you may not use this file except in compliance
09 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 */
21 package org.apache.qpid.management.domain.model;
22
23 import java.util.EventObject;
24 import java.util.concurrent.BlockingQueue;
25
26 import org.apache.qpid.management.domain.handler.impl.InvocationResult;
27
28 /**
29 * Operation invocation event.
30 * This encapsulates all the information that a method invocation listener needs to know about an operation which is
31 * going to be invoked.
32 *
33 * @author Andrea Gazzarini
34 */
35 public class InvocationEvent extends EventObject
36 {
37 private static final long serialVersionUID = 240229490753008597L;
38
39 private final int _sequenceNumber;
40 private final BlockingQueue<InvocationResult> _exchangeChannel;
41
42 /**
43 * Builds a new invocation event with the given data.
44 *
45 * @param source the event source.
46 * @param sequenceNumber the sequence number of the method invocation.
47 * @param exchangeChannel the exchange channel for synchronous communication.
48 */
49 InvocationEvent(Object source, int sequenceNumber, BlockingQueue<InvocationResult> exchangeChannel)
50 {
51 super(source);
52 this._sequenceNumber = sequenceNumber;
53 this._exchangeChannel = exchangeChannel;
54 }
55
56 /**
57 * Returns the sequence number that will be / has been used for method invocation.
58 *
59 * @return the sequence number that will be / has been used for method invocation.
60 */
61 public int getSequenceNumber()
62 {
63 return _sequenceNumber;
64 }
65
66 /**
67 * Returns the exchange channel that will be used between event source and event listener for synchronous
68 * communication.
69 *
70 * @return the exchange channel that will be used for synchronous communication.
71 */
72 public BlockingQueue<InvocationResult> getExchangeChannel()
73 {
74 return _exchangeChannel;
75 }
76 }
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