01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * 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.EnterpriseContext;
25: import org.jboss.ejb.EntityEnterpriseContext;
26:
27: /**
28: * An entity bean instance pool.
29: *
30: * @version <tt>$Revision: 57209 $</tt>
31: * @author <a href="mailto:rickard.oberg@telkel.com">Rickard Öberg</a>
32: * @author <a href="mailto:marc.fleury@telkel.com">Marc Fleury</a>
33: * @author <a href="mailto:andreas.schaefer@madplanet.com">Andreas Schaefer</a>
34: * @author <a href="mailto:sacha.labourey@cogito-info.ch">Sacha Labourey</a>
35: */
36: public class EntityInstancePool extends AbstractInstancePool {
37: /**
38: * Return an instance to the free pool. Reset state
39: *
40: * <p>Called in 3 cases:
41: * <ul>
42: * <li>Done with finder method
43: * <li>Removed
44: * <li>Passivated
45: * </ul>
46: *
47: * @param ctx
48: */
49: public void free(EnterpriseContext ctx) {
50: // If transaction still present don't do anything (let the instance be GC)
51: if (ctx.getTransaction() != null) {
52: if (log.isTraceEnabled())
53: log
54: .trace("Can Not FREE Entity Context because a Transaction exists.");
55: return;
56: }
57:
58: super .free(ctx);
59: }
60:
61: protected EnterpriseContext create(Object instance)
62: throws Exception {
63: return new EntityEnterpriseContext(instance, getContainer());
64: }
65: }
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