spring CompiledExpression 源码
spring CompiledExpression 代码
文件路径：/spring-expression/src/main/java/org/springframework/expression/spel/CompiledExpression.java
/*
* Copyright 2002-2017 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
*
* https://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.expression.spel;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.EvaluationException;
import org.springframework.lang.Nullable;
/**
* Base superclass for compiled expressions. Each generated compiled expression class
* will extend this class and implement the {@link #getValue} method. It is not intended
* to be subclassed by user code.
*
* @author Andy Clement
* @since 4.1
*/
public abstract class CompiledExpression {
/**
* Subclasses of CompiledExpression generated by SpelCompiler will provide an
* implementation of this method.
*/
public abstract Object getValue(@Nullable Object target, @Nullable EvaluationContext context)
throws EvaluationException;
}
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