core/src/main/java/com/opensymphony/xwork2/factory/InterceptorFactory.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 com.opensymphony.xwork2.factory;

import com.opensymphony.xwork2.config.ConfigurationException;
import com.opensymphony.xwork2.config.entities.InterceptorConfig;
import com.opensymphony.xwork2.interceptor.Interceptor;

import java.util.Map;

/**
 * Dedicated interface used by {@link com.opensymphony.xwork2.ObjectFactory} to build {@link com.opensymphony.xwork2.interceptor.Interceptor}
 */
public interface InterceptorFactory {

    /**
     * Builds an Interceptor from the InterceptorConfig and the Map of
     * parameters from the interceptor reference. Implementations of this method
     * should ensure that the Interceptor is parameterized with both the
     * parameters from the Interceptor config and the interceptor ref Map (the
     * interceptor ref params take precedence), and that the Interceptor.init()
     * method is called on the Interceptor instance before it is returned.
     *
     * @param interceptorConfig    the InterceptorConfig from the configuration
     * @param interceptorRefParams a Map of params provided in the Interceptor reference in the
     *                             Action mapping or InterceptorStack definition
     *
     * @return interceptor
     *
     * @throws ConfigurationException in case of any configuration errors
     */
    Interceptor buildInterceptor(InterceptorConfig interceptorConfig, Map<String, String> interceptorRefParams) throws ConfigurationException;

}