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.node;
18:
19: import edu.iu.uis.eden.engine.RouteContext;
20:
21: /**
22: * The JoinEngine is responsible for maintaining join state and determining when the join condition
23: * has been satisfied.
24: *
25: * @author ewestfal
26: */
27: public interface JoinEngine {
28:
29: public void addExpectedJoiner(RouteNodeInstance nodeInstance,
30: Branch branch);
31:
32: public void addActualJoiner(RouteNodeInstance nodeInstance,
33: Branch branch);
34:
35: public boolean isJoined(RouteNodeInstance nodeInstance);
36:
37: public void createExpectedJoinState(RouteContext context,
38: RouteNodeInstance joinInstance,
39: RouteNodeInstance previousNodeInstance);
40: }
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