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.action;
23:
24: import org.jbpm.graph.def.ActionHandler;
25: import org.jbpm.graph.exe.ExecutionContext;
26:
27: public class SeamedAction implements ActionHandler {
28:
29: private static final long serialVersionUID = 1L;
30:
31: String expression = null;
32:
33: public void execute(ExecutionContext executionContext)
34: throws Exception {
35: try {
36: beginSeamConversation(executionContext);
37: invokeSeamObjectExpression();
38: } finally {
39: endSeamConversation(executionContext);
40: }
41: }
42:
43: protected void beginSeamConversation(
44: ExecutionContext executionContext) {
45: }
46:
47: protected void invokeSeamObjectExpression() {
48: // execute 'expression'
49: }
50:
51: protected void endSeamConversation(ExecutionContext executionContext) {
52: }
53: }
|