01: package org.drools.ruleflow.core;
02:
03: /*
04: * Copyright 2005 JBoss Inc
05: *
06: * Licensed under the Apache License, Version 2.0 (the "License");
07: * you may not use this file except in compliance with the License.
08: * You may obtain a copy of the License at
09: *
10: * http://www.apache.org/licenses/LICENSE-2.0
11: *
12: * Unless required by applicable law or agreed to in writing, software
13: * distributed under the License is distributed on an "AS IS" BASIS,
14: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15: * See the License for the specific language governing permissions and
16: * limitations under the License.
17: */
18:
19: /**
20: * Represents a milestone in a RuleFlow.
21: * A milestone has an associated constraint.
22: * Flow will only continue if this constraint has been satisfied.
23: *
24: * @author <a href="mailto:kris_verlaenen@hotmail.com">Kris Verlaenen</a>
25: */
26: public interface MilestoneNode extends Node {
27:
28: /**
29: * Returns the incoming connection of the MilestoneNode.
30: *
31: * @return the incoming connection of the MilestoneNode.
32: */
33: Connection getFrom();
34:
35: /**
36: * Returns the outgoing connection of the MilestoneNode.
37: *
38: * @return the outgoing connection of the MilestoneNode.
39: */
40: Connection getTo();
41:
42: /**
43: * Returns the constraint of the MilestoneNode.
44: *
45: * @return the constraint of the MilestoneNode.
46: */
47: String getConstraint();
48:
49: /**
50: * Sets the constraint of the MilestoneNode.
51: *
52: * @param constraint The constraint of the MilestoneNode
53: */
54: void setConstraint(String constraint);
55: }
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