| /* |
| * 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.openjpa.persistence; |
| |
| import java.lang.reflect.Method; |
| import java.util.Collection; |
| |
| import org.apache.openjpa.conf.OpenJPAConfiguration; |
| import org.apache.openjpa.event.LifecycleCallbacks; |
| import org.apache.openjpa.event.LifecycleEvent; |
| import org.apache.openjpa.event.MethodLifecycleCallbacks; |
| import org.apache.openjpa.lib.log.Log; |
| import org.apache.openjpa.lib.util.Localizer; |
| import org.apache.openjpa.util.UserException; |
| |
| /** |
| * Common utilities for persistence metadata parsers. |
| * |
| * @author Abe White |
| */ |
| class MetaDataParsers { |
| |
| private static final Localizer _loc = Localizer.forPackage |
| (MetaDataParsers.class); |
| |
| /** |
| * Return the event type constants for the given tag, or null if none. |
| */ |
| public static int[] getEventTypes(MetaDataTag tag, |
| OpenJPAConfiguration conf) { |
| switch (tag) { |
| case PRE_PERSIST: |
| return new int[]{ LifecycleEvent.BEFORE_PERSIST }; |
| case POST_PERSIST: |
| boolean immediate = conf.getCallbackOptionsInstance() |
| .getPostPersistCallbackImmediate(); |
| return new int[]{ immediate ? LifecycleEvent.AFTER_PERSIST |
| : LifecycleEvent.AFTER_PERSIST_PERFORMED }; |
| case PRE_REMOVE: |
| return new int[]{ LifecycleEvent.BEFORE_DELETE }; |
| case POST_REMOVE: |
| return new int[]{ LifecycleEvent.AFTER_DELETE_PERFORMED }; |
| case PRE_UPDATE: |
| return new int[]{ LifecycleEvent.BEFORE_UPDATE }; |
| case POST_UPDATE: |
| return new int[]{ LifecycleEvent.AFTER_UPDATE_PERFORMED }; |
| case POST_LOAD: |
| return new int[]{ LifecycleEvent.AFTER_LOAD }; |
| default: |
| return null; |
| } |
| } |
| |
| /** |
| * Validate that the given listener class does not have multiple methods |
| * listening for the same lifecycle event, which is forbidden by the spec. |
| */ |
| public static void validateMethodsForSameCallback(Class cls, |
| Collection<LifecycleCallbacks> callbacks, Method method, |
| MetaDataTag tag, OpenJPAConfiguration conf, Log log) { |
| if (callbacks == null || callbacks.isEmpty()) |
| return; |
| |
| for (LifecycleCallbacks lc: callbacks) { |
| if (!(lc instanceof MethodLifecycleCallbacks)) |
| continue; |
| Method exists = ((MethodLifecycleCallbacks) lc).getCallbackMethod(); |
| if (!exists.getDeclaringClass().equals(method.getDeclaringClass()) |
| || exists.equals(method)) |
| continue; |
| |
| Localizer.Message msg = _loc.get("multiple-methods-on-callback", |
| new Object[] { method.getDeclaringClass().getName(), |
| method.getName(), exists.getName(), tag.toString() }); |
| if (conf.getCallbackOptionsInstance() |
| .getAllowsMultipleMethodsForSameCallback()) |
| log.warn(msg); |
| else |
| throw new UserException(msg); |
| } |
| } |
| } |