1 files changed, 62 insertions, 0 deletions
diff --git a/java/broker/src/main/java/org/apache/qpid/server/ack/UnacknowledgedMessageMap.java b/java/broker/src/main/java/org/apache/qpid/server/ack/UnacknowledgedMessageMap.java
new file mode 100644
index 0000000000..8fece7bcc1
--- /dev/null
+++ b/java/broker/src/main/java/org/apache/qpid/server/ack/UnacknowledgedMessageMap.java
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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.qpid.server.ack;
+
+import org.apache.qpid.server.txn.TransactionalContext;
+import org.apache.qpid.AMQException;
+
+import java.util.Collection;
+import java.util.List;
+
+public interface UnacknowledgedMessageMap
+{
+    public interface Visitor
+    {
+        /**
+         * @param message the message being iterated over
+         * @return true to stop iteration, false to continue
+         * @throws AMQException
+         */
+        boolean callback(UnacknowledgedMessage message) throws AMQException;
+
+        void visitComplete();
+    }
+
+    void visit(Visitor visitor) throws AMQException;
+
+    void add(long deliveryTag, UnacknowledgedMessage message);
+
+    void collect(long deliveryTag, boolean multiple, List<UnacknowledgedMessage> msgs);
+
+    boolean contains(long deliveryTag) throws AMQException;
+
+    void remove(List<UnacknowledgedMessage> msgs);
+
+    UnacknowledgedMessage remove(long deliveryTag);
+
+    void drainTo(Collection<UnacknowledgedMessage> destination, long deliveryTag) throws AMQException;
+
+    Collection<UnacknowledgedMessage> cancelAllMessages();
+
+    void acknowledgeMessage(long deliveryTag, boolean multiple, TransactionalContext txnContext) throws AMQException;
+
+    int size();
+
+    void clear();
+}
+