2 * Copyright 2005-2010 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.wicket.behavior;
18 import java.util.logging.Level;
19 import java.util.logging.Logger;
21 import javax.annotation.Resource;
22 import javax.persistence.EntityManager;
23 import javax.transaction.Status;
24 import javax.transaction.SystemException;
25 import javax.transaction.UserTransaction;
27 import org.apache.wicket.markup.html.WebPage;
30 * Behavior to flush the entity manager after rendering of the page.
32 * @author Erik Brakkee
35 public class FlushEntityManagerBehavior extends AbstractPageBehavior {
37 private static final Logger LOGGER = Logger
38 .getLogger(FlushEntityManagerBehavior.class.getName());
40 private EntityManager entityManager;
43 * Constructs the behavior.
45 * @param aEntityManager
46 * Contextual reference to an entitymanager.
48 public FlushEntityManagerBehavior(EntityManager aEntityManager) {
49 entityManager = aEntityManager;
53 public void onAfterRender(WebPage aPage) {
55 if (entityManager.isOpen()) {
56 entityManager.flush();
58 } catch (Exception e) { // TODO catch the Entity manager exceptions explicitly and rethrow, but log
60 LOGGER.log(Level.WARNING, "Could not flush entitymanager", e);