01: /*
02: * Copyright 2005-2006 The Kuali Foundation.
03: *
04: *
05: * Licensed under the Educational Community License, Version 1.0 (the "License");
06: * you may not use this file except in compliance with the License.
07: * You may obtain a copy of the License at
08: *
09: * http://www.opensource.org/licenses/ecl1.php
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package edu.iu.uis.eden.engine.transition;
18:
19: import edu.iu.uis.eden.engine.RouteHelper;
20: import edu.iu.uis.eden.engine.node.RouteNode;
21: import edu.iu.uis.eden.engine.node.RouteNodeInstance;
22: import edu.iu.uis.eden.exception.WorkflowException;
23:
24: /**
25: * Factory which creates a {@link TransitionEngine} for the given {@link RouteNodeInstance}. The
26: * transition engine is determined based on the type of the node instance.
27: *
28: * @see TransitionEngine
29: *
30: * @author ewestfal
31: * @author rkirkend
32: */
33: public class TransitionEngineFactory {
34:
35: public static TransitionEngine createTransitionEngine(
36: RouteNodeInstance nodeInstance) throws Exception {
37: RouteHelper helper = new RouteHelper();
38: RouteNode routeNode = nodeInstance.getRouteNode();
39: TransitionEngine engine = null;
40: if (helper.isSimpleNode(routeNode)) {
41: engine = new SimpleTransitionEngine();
42: } else if (helper.isSplitNode(routeNode)) {
43: engine = new SplitTransitionEngine();
44: } else if (helper.isJoinNode(routeNode)) {
45: engine = new JoinTransitionEngine();
46: } else if (helper.isDynamicNode(routeNode)) {
47: engine = new DynamicTransitionEngine();
48: } else if (helper.isSubProcessNode(routeNode)) {
49: engine = new SubProcessTransitionEngine();
50: } else {
51: throw new WorkflowException(
52: "Could not locate transition engine for node "
53: + routeNode.getNodeType());
54: }
55: engine.setRouteHelper(helper);
56: return engine;
57: }
58:
59: }
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