1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * 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 package org.jboss.ejb.plugins;
23
24 import org.jboss.ejb.EntityEnterpriseContext;
25 import org.jboss.ejb.GlobalTxEntityMap;
26 import org.jboss.invocation.Invocation;
27 import org.jboss.tm.TxUtils;
28
29
30 /**
31 * The instance interceptors role is to break entity creation into two
32 * calls, one for ejbCreate and one for ejbPostCreate. The ejbCreate
33 * method is passed over the invokeHome chain, and ejbPostCreate is
34 * passed over the invoke chain.
35 *
36 * @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
37 * @version $Revision: 62314 $
38 */
39 public class EntityCreationInterceptor extends AbstractInterceptor
40 {
41 public Object invokeHome(Invocation mi)
42 throws Exception
43 {
44 // Invoke through interceptors
45 Object retVal = getNext().invokeHome(mi);
46
47 // Is the context now with an identity?
48 // This means that a create method was called, so invoke ejbPostCreate.
49 EntityEnterpriseContext ctx =
50 (EntityEnterpriseContext) mi.getEnterpriseContext();
51 if(ctx != null && ctx.getId() != null)
52 {
53 // copy from the context into the mi
54 // interceptors down the chain look in the mi for the id not the ctx.
55 mi.setId(ctx.getId());
56
57 // invoke down the invoke chain
58 // the final interceptor in EntityContainer will redirect this
59 // call to postCreateEntity, which calls ejbPostCreate
60 getNext().invoke(mi);
61
62 // now it's ready and can be scheduled for the synchronization
63 if(TxUtils.isActive(mi.getTransaction()))
64 {
65 GlobalTxEntityMap.NONE.scheduleSync(mi.getTransaction(), ctx);
66 }
67 }
68
69 return retVal;
70 }
71
72 public Object invoke(Invocation mi)
73 throws Exception
74 {
75 // nothing to see here... move along
76 return getNext().invoke(mi);
77 }
78 }
79
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