| /** |
| * |
| * Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable. |
| * |
| * 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.xbean.kernel; |
| |
| import java.util.Set; |
| |
| /** |
| * The StartStrategy interface is used to assist the kernel in determining how to handle problems that occur while |
| * starting a service. |
| * |
| * @author Dain Sundstrom |
| * @version $Id$ |
| * @since 2.0 |
| */ |
| public interface StartStrategy { |
| /** |
| * Determines if the kernel should wait for the unsatified conditions to be satisfied. |
| * |
| * @param serviceName the name of the service that has the unsatisfied condtions |
| * @param conditions the unsatisfied condtions |
| * @return true if the kernel should wait for the conditions to be satisfied; false if the strategy would like |
| * silently leave the service in the starting state |
| * @throws UnsatisfiedConditionsException the the strategy would like to leave the service in the starting state |
| * and throw an exception the caller |
| * @throws UnregisterServiceException if the strategy would like to ignore the unsatisfied conditions and continue to |
| * destry the service |
| */ |
| boolean waitForUnsatisfiedConditions(ServiceName serviceName, Set conditions) throws UnsatisfiedConditionsException, UnregisterServiceException; |
| |
| /** |
| * Handle the start error. The strategy can rethrow the exception, throw an {@link UnregisterServiceException}, or |
| * return. If this method rethrows the exception, the service will be destroyed and the exception will be thrown to |
| * the caller. If an UnregisterServiceException is thrown, the kernel will unregister the service and rethrow |
| * {@link UnregisterServiceException#getCause()}. If this method returns without throwing an exception, the kernel |
| * will pass the exception to the service monitor for processing and leave the service in the starting state. |
| * |
| * @param serviceName the name of the service that has the error |
| * @param startError the Exception or Error |
| * @throws UnregisterServiceException if the strategy would like the service to be destroyed and unregistered |
| * @throws Exception if the strategy would like to destroy the service and throw the exception to the caller |
| */ |
| void startError(ServiceName serviceName, Throwable startError) throws UnregisterServiceException, Exception; |
| } |