org.springframework.binding.expression.Expression Maven / Gradle / Ivy
/*
* Copyright 2002-2006 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.binding.expression;
/**
* Evaluates a single parsed expression of the provided input object in the
* specified context. This provides a common abstraction for expression
* evaluation independent of any language like OGNL or Spring's BeanWrapper.
* @author Keith Donald
*/
public interface Expression {
/**
* Evaluate the expression encapsulated by this evaluator against the
* provided target object and return the result of the evaluation.
* @param target The target of the expression
* @param context The expression evaluation context
* @return the evaluation result
* @throws EvaluationException an exception occured during evaluation.
*/
public Object evaluate(Object target, EvaluationContext context) throws EvaluationException;
}