com.acciente.induction.init.RequestInterceptorInitializer.java Source code

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Here is the source code for com.acciente.induction.init.RequestInterceptorInitializer.java

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/*
 * Copyright 2008-2013 Acciente, LLC
 *
 * Acciente, LLC 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.acciente.induction.init;

import com.acciente.commons.reflect.ParameterProviderException;
import com.acciente.induction.dispatcher.model.ModelPool;
import com.acciente.induction.init.config.Config;
import com.acciente.induction.interceptor.RequestInterceptor;
import com.acciente.induction.util.ConstructorNotFoundException;
import com.acciente.induction.util.ObjectFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.servlet.ServletConfig;
import java.lang.reflect.InvocationTargetException;

/**
 * RequestInterceptorInitializer
 *
 * @author Adinath Raveendra Raj
 * @created Sep 7, 2009
 */
public class RequestInterceptorInitializer {
    public static RequestInterceptor[] getRequestInterceptor(Config.RequestInterceptors oRequestInterceptorsConfig,
            ModelPool oModelPool, ClassLoader oClassLoader, ServletConfig oServletConfig)
            throws ClassNotFoundException, InvocationTargetException, ConstructorNotFoundException,
            ParameterProviderException, IllegalAccessException, InstantiationException {
        RequestInterceptor[] oRequestInterceptorArray;
        String sRequestInterceptorClassName;
        Log oLog;

        oLog = LogFactory.getLog(RequestInterceptorInitializer.class);

        oRequestInterceptorArray = new RequestInterceptor[oRequestInterceptorsConfig.getRequestInterceptorList()
                .size()];

        for (int i = 0; i < oRequestInterceptorsConfig.getRequestInterceptorList().size(); i++) {
            Config.RequestInterceptors.RequestInterceptor oRequestInterceptorConfig;

            oRequestInterceptorConfig = (Config.RequestInterceptors.RequestInterceptor) oRequestInterceptorsConfig
                    .getRequestInterceptorList().get(i);

            sRequestInterceptorClassName = oRequestInterceptorConfig.getClassName();

            oLog.info("loading user-defined request interceptor: " + sRequestInterceptorClassName);

            Class oRequestInterceptorClass = oClassLoader.loadClass(sRequestInterceptorClassName);

            // attempt to find and call the single public constructor
            oRequestInterceptorArray[i] = (RequestInterceptor) ObjectFactory.createObject(oRequestInterceptorClass,
                    new Object[] { oServletConfig, oRequestInterceptorConfig, oClassLoader },
                    new InitializerParameterProvider(oModelPool, "request-interceptor-init"));
        }

        return oRequestInterceptorArray;
    }
}