| /* |
| * 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; |
| |
| /** |
| * FailoverProtectedOperation is a continuation for an operation that may throw a {@link FailoverException} because |
| * it has been interrupted by the fail-over process. The {@link FailoverRetrySupport} class defines support wrappers |
| * for failover protected operations, in order to provide different handling schemes when failovers occurr. |
| * <p> |
| * The type of checked exception that the operation may perform has been generified, in order that fail over |
| * protected operations can be defined that raise arbitrary exceptions. The actuall exception types used should not |
| * be sub-classes of FailoverException, or else catching FailoverException in the {@link FailoverRetrySupport} classes |
| * will mask the exception. |
| */ |
| public interface FailoverProtectedOperation<T, E extends Exception> |
| { |
| /** |
| * Performs the continuations work. |
| * |
| * @return Provdes scope for the continuation to return an arbitrary value. |
| * |
| * @throws FailoverException If the operation is interrupted by a fail-over notification. |
| */ |
| public abstract T execute() throws E, FailoverException; |
| } |