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.binding.expression;
17:
18: /**
19: * An evaluator that is capable of setting a value on a target object at the
20: * path defined by this expression.
21: *
22: * @author Keith Donald
23: */
24: public interface SettableExpression extends Expression {
25:
26: /**
27: * Evaluate this expression against the target object to set its value to
28: * the value provided.
29: * @param target the target object
30: * @param value the new value to be set
31: * @param context the evaluation context
32: * @throws EvaluationException an exception occured during evaluation
33: */
34: public void evaluateToSet(Object target, Object value,
35: EvaluationContext context) throws EvaluationException;
36: }
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