01: /*
02: * JBoss, Home of Professional Open Source
03: * Copyright 2005, JBoss Inc., and individual contributors as indicated
04: * by the @authors tag. See the copyright.txt in the distribution for a
05: * 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.jbpm.msg.db;
23:
24: import java.util.Collection;
25:
26: import org.apache.commons.logging.Log;
27: import org.apache.commons.logging.LogFactory;
28: import org.jbpm.JbpmConfiguration;
29: import org.jbpm.JbpmContext;
30: import org.jbpm.JbpmException;
31: import org.jbpm.db.JobSession;
32: import org.jbpm.graph.exe.Token;
33: import org.jbpm.job.Job;
34: import org.jbpm.job.executor.JobExecutor;
35: import org.jbpm.msg.MessageService;
36:
37: public class DbMessageService implements MessageService {
38:
39: private static final long serialVersionUID = 1L;
40:
41: JbpmConfiguration jbpmConfiguration;
42: JobSession jobSession = null;
43: Collection destinations = null;
44: boolean hasProducedJobs = false;
45:
46: public DbMessageService() {
47: JbpmContext jbpmContext = JbpmContext.getCurrentJbpmContext();
48: if (jbpmContext == null) {
49: throw new JbpmException(
50: "instantiation of the DbMessageService requires a current JbpmContext");
51: }
52: this .jbpmConfiguration = jbpmContext.getJbpmConfiguration();
53: this .jobSession = jbpmContext.getJobSession();
54: }
55:
56: public void send(Job job) {
57: jobSession.saveJob(job);
58: log.debug("saved job[" + job.getId() + ", "
59: + job.getClass().getName() + "]");
60: hasProducedJobs = true;
61: }
62:
63: public void close() {
64: JobExecutor jobExecutor = jbpmConfiguration.getJobExecutor();
65: if ((hasProducedJobs) && (jobExecutor != null)) {
66: log
67: .debug("messages were produced the jobExecutor will be signalled");
68: synchronized (jobExecutor) {
69: jobExecutor.notify();
70: }
71: }
72: }
73:
74: private static Log log = LogFactory.getLog(DbMessageService.class);
75: }
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