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.page;
18 import java.util.logging.Level;
19 import java.util.logging.Logger;
21 import javax.persistence.EntityManager;
22 import javax.persistence.PersistenceException;
23 import javax.persistence.TransactionRequiredException;
25 import org.apache.wicket.markup.html.WebPage;
28 * Behavior to flush the entity manager after rendering of the page.
30 * @author Erik Brakkee
33 public abstract class FlushEntityManagerBehavior extends AbstractPageBehavior {
35 private static final Logger LOGGER = Logger
36 .getLogger(FlushEntityManagerBehavior.class.getName());
39 * Constructs the behavior.
41 * @param aEntityManager
42 * Contextual reference to an entitymanager.
44 public FlushEntityManagerBehavior() {
49 public void onAfterRender(WebPage aPage) {
50 EntityManager entityManager = getEntityManager();
52 if (entityManager.isOpen()) {
53 entityManager.flush();
55 } catch (TransactionRequiredException e) {
57 } catch (PersistenceException e) {
59 } catch (Exception e) {
60 LOGGER.log(Level.WARNING, "Could not flush entitymanager", e);
65 * Gets the entity mmanager to flush.
67 * @return Entity manager.
69 public abstract EntityManager getEntityManager();