org.springframework.expression.BeanResolver.java Source code

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Here is the source code for org.springframework.expression.BeanResolver.java

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/*
 * Copyright 2002-2018 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;

/**
 * A bean resolver can be registered with the evaluation context and will kick in
 * for bean references: {@code @myBeanName} and {@code &myBeanName} expressions.
 * The <tt>&</tt> variant syntax allows access to the factory bean where relevant.
 *
 * @author Andy Clement
 * @since 3.0.3
 */
public interface BeanResolver {

    /**
     * Look up a bean by the given name and return a corresponding instance for it.
     * For attempting access to a factory bean, the name needs a <tt>&</tt> prefix.
     * @param context the current evaluation context
     * @param beanName the name of the bean to look up
     * @return an object representing the bean
     * @throws AccessException if there is an unexpected problem resolving the bean
     */
    Object resolve(EvaluationContext context, String beanName) throws AccessException;

}