Creating a branch for experimenting with some ideas for JMS client.rajith_jms_client

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/rajith_jms_client@1128369 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 47 insertions, 0 deletions

diff --git a/qpid/java/client/src/main/java/org/apache/qpid/client/failover/FailoverSupport.java b/qpid/java/client/src/main/java/org/apache/qpid/client/failover/FailoverSupport.java
new file mode 100644
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+++ b/qpid/java/client/src/main/java/org/apache/qpid/client/failover/FailoverSupport.java
@@ -0,0 +1,47 @@
+/*
+ *  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.qpid.client.failover;
+
+/**
+ * FailoverSupport defines an interface for different types of fail-over handlers, that provide different types of
+ * behaviour for handling fail-overs during operations that can be interrupted by the fail-over process. For example,
+ * the support could automatically retry once the fail-over process completes, could prevent an operation from being
+ * started whilst fail-over is running, or could quietly abandon the operation or raise an exception, and so on.
+ *
+ * <p><table id="crc"><caption>CRC Card</caption>
+ * <tr><th> Responsibilities
+ * <tr><td> Perform a fail-over protected operation with handling for fail-over conditions.
+ * </table>
+ *
+ * @todo Continuation, extend some sort of re-usable Continuation interface, which might look very like this one.
+ */
+public interface FailoverSupport<T, E extends Exception>
+{
+    /**
+     * Delegates to another continuation which is to be provided with fail-over handling.
+     *
+     * @return The return value from the delegated to continuation.
+     *
+     * @throws E Any exception that the delegated to continuation may raise.
+     */
+    public T execute() throws E;
+}