/jboss-as-7.1.1.Final/jpa/core/src/main/java/org/jboss/as/jpa/interceptor/SBInvocationInterceptor.java

 1/*
 2 * JBoss, Home of Professional Open Source.
 3 * Copyright 2011, Red Hat, Inc., and individual contributors
 4 * as indicated by the @author tags. See the copyright.txt file in the
 5 * distribution for a full listing of individual contributors.
 6 *
 7 * This is free software; you can redistribute it and/or modify it
 8 * under the terms of the GNU Lesser General Public License as
 9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22
23package org.jboss.as.jpa.interceptor;
24
25import org.jboss.as.jpa.container.NonTxEmCloser;
26import org.jboss.invocation.ImmediateInterceptorFactory;
27import org.jboss.invocation.Interceptor;
28import org.jboss.invocation.InterceptorContext;
29import org.jboss.invocation.InterceptorFactory;
30
31/**
32 * Session bean Invocation interceptor.
33 * Used for stateless session bean invocations to allow NonTxEmCloser to close the
34 * underlying entity manager after a non-transactional invocation.
35 *
36 * @author Scott Marlow
37 */
38public class SBInvocationInterceptor implements Interceptor {
39
40    public static final InterceptorFactory FACTORY = new ImmediateInterceptorFactory(new SBInvocationInterceptor());
41
42    @Override
43    public Object processInvocation(InterceptorContext context) throws Exception {
44
45        NonTxEmCloser.pushCall();
46        try {
47            return context.proceed();   // call the next interceptor or target
48        } finally {
49            NonTxEmCloser.popCall();
50        }
51    }
52
53    private SBInvocationInterceptor() {
54    }
55}