01: /*
02: * Copyright 2004-2007 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16: package org.springframework.webflow.engine;
17:
18: import org.springframework.webflow.execution.RequestContext;
19:
20: /**
21: * Strategy interface encapsulating criteria that determine whether
22: * or not a transition should execute given a flow execution request context.
23: *
24: * @see org.springframework.webflow.engine.Transition
25: * @see org.springframework.webflow.execution.RequestContext
26: *
27: * @author Keith Donald
28: * @author Erwin Vervaet
29: */
30: public interface TransitionCriteria {
31:
32: /**
33: * Check if the transition should fire based on the given flow execution
34: * request context.
35: * @param context the flow execution request context
36: * @return true if the transition should fire, false otherwise
37: */
38: public boolean test(RequestContext context);
39:
40: }
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