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.server.ack;
22
23 import java.util.Collection;
24 import java.util.List;
25 import java.util.Set;
26 import java.util.Map;
27
28 import org.apache.qpid.AMQException;
29 import org.apache.qpid.server.txn.TransactionalContext;
30 import org.apache.qpid.server.queue.QueueEntry;
31 import org.apache.qpid.server.store.StoreContext;
32
33 public interface UnacknowledgedMessageMap
34 {
35 public interface Visitor
36 {
37 /**
38 * @param deliveryTag
39 *@param message the message being iterated over @return true to stop iteration, false to continue
40 * @throws AMQException
41 */
42 boolean callback(final long deliveryTag, QueueEntry message) throws AMQException;
43
44 void visitComplete();
45 }
46
47 void visit(Visitor visitor) throws AMQException;
48
49 void add(long deliveryTag, QueueEntry message);
50
51 void collect(long deliveryTag, boolean multiple, Map<Long, QueueEntry> msgs);
52
53 boolean contains(long deliveryTag) throws AMQException;
54
55 void remove(Map<Long,QueueEntry> msgs);
56
57 QueueEntry remove(long deliveryTag);
58
59 public void drainTo(long deliveryTag, StoreContext storeContext) throws AMQException;
60
61 Collection<QueueEntry> cancelAllMessages();
62
63 void acknowledgeMessage(long deliveryTag, boolean multiple, TransactionalContext txnContext) throws AMQException;
64
65 int size();
66
67 void clear();
68
69 QueueEntry get(long deliveryTag);
70
71 /**
72 * Get the set of delivery tags that are outstanding.
73 *
74 * @return a set of delivery tags
75 */
76 Set<Long> getDeliveryTags();
77
78 public long getUnacknowledgeBytes();
79 }
80
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