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.graph.node;
23:
24: import org.jbpm.graph.def.*;
25: import org.jbpm.graph.exe.ExecutionContext;
26: import org.jbpm.graph.exe.Token;
27: import org.jbpm.jpdl.exe.*;
28:
29: public class MilestoneNode extends Node {
30:
31: private static final long serialVersionUID = 1L;
32:
33: String tokenPath = ".";
34:
35: public MilestoneNode() {
36: }
37:
38: public MilestoneNode(String name) {
39: super (name);
40: }
41:
42: public void execute(ExecutionContext executionContext) {
43: Token token = executionContext.getToken();
44: // get the token on which the milestone should be verified
45: Token milestoneToken = token.findToken(tokenPath);
46: if (isMilestoneReached(name, milestoneToken)) {
47:
48: // continue to pass the token over the default transition
49: token.getNode().leave(executionContext);
50:
51: } else {
52: addMilestoneListener(name, milestoneToken);
53: }
54: }
55:
56: public boolean isMilestoneReached(String milestoneName, Token token) {
57: MilestoneInstance mi = MilestoneInstance.getMilestoneInstance(
58: milestoneName, token);
59: return (mi != null ? mi.isReached() : false);
60: }
61:
62: public void addMilestoneListener(String milestoneName, Token token) {
63: MilestoneInstance mi = MilestoneInstance.getMilestoneInstance(
64: milestoneName, token);
65: mi.addListener(token);
66: }
67:
68: public String getTokenPath() {
69: return tokenPath;
70: }
71:
72: public void setTokenPath(String relativeTokenPath) {
73: this.tokenPath = relativeTokenPath;
74: }
75: }
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