01: /*
02: * hgcommons 7
03: * Hammurapi Group Common Library
04: * Copyright (C) 2003 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://www.hammurapi.biz/hammurapi-biz/ef/xmenu/hammurapi-group/products/products/hgcommons/index.html
21: * e-Mail: support@hammurapi.biz
22: */
23: package biz.hammurapi.util;
24:
25: import java.io.Serializable;
26: import java.net.MalformedURLException;
27: import java.rmi.Naming;
28: import java.rmi.NotBoundException;
29: import java.rmi.RemoteException;
30:
31: import javax.rmi.PortableRemoteObject;
32:
33: import org.w3c.dom.Element;
34: import org.w3c.dom.Node;
35:
36: import biz.hammurapi.RuntimeException;
37: import biz.hammurapi.config.ConfigurationException;
38: import biz.hammurapi.config.Context;
39:
40: /**
41: * Unwraps remote worker
42: * @author Pavel Vlasov
43: * @revision $Revision$
44: */
45: public class RemoteWorkerComponent implements Worker {
46: private RemoteWorker master;
47: private String url;
48:
49: public void start() throws ConfigurationException {
50: try {
51: master = (RemoteWorker) PortableRemoteObject.narrow(Naming
52: .lookup(url), RemoteWorker.class);
53: } catch (MalformedURLException e) {
54: throw new ConfigurationException("Could not lookup '" + url
55: + "' - " + e, e);
56: } catch (RemoteException e) {
57: throw new ConfigurationException("Could not lookup '" + url
58: + "' - " + e, e);
59: } catch (NotBoundException e) {
60: throw new ConfigurationException("Could not bind '" + url
61: + "' - " + e, e);
62: }
63: }
64:
65: public void stop() throws ConfigurationException {
66: // Nothing
67: }
68:
69: public void setOwner(Object owner) {
70: // nothing
71:
72: }
73:
74: public void configure(Node configNode, Context context)
75: throws ConfigurationException {
76: Element ce = (Element) configNode;
77: url = ce.getAttribute("worker-url");
78: }
79:
80: public boolean post(Runnable job) {
81: try {
82: return job instanceof Serializable && master.post(job);
83: } catch (RemoteException e) {
84: throw new RuntimeException(
85: "Could not post job to remote worker: " + e, e);
86: }
87: }
88:
89: }
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