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

Introduction

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

Source

/*
 * 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.lang.Strings;
import com.acciente.commons.reflect.ParameterProviderException;
import com.acciente.induction.dispatcher.model.ModelPool;
import com.acciente.induction.init.config.Config;
import com.acciente.induction.resolver.RedirectResolver;
import com.acciente.induction.resolver.ShortURLRedirectResolver;
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.io.IOException;
import java.lang.reflect.InvocationTargetException;

/**
 * Internal.
 *
 * @created Jun 21, 2008 *
 * @author Adinath Raveendra Raj
 */
public class RedirectResolverInitializer {
    public static RedirectResolver getRedirectResolver(Config.RedirectResolver oRedirectResolverConfig,
            Config.RedirectMapping oRedirectMappingConfig, ModelPool oModelPool, ClassLoader oClassLoader,
            ServletConfig oServletConfig)
            throws ClassNotFoundException, InvocationTargetException, ConstructorNotFoundException,
            ParameterProviderException, IllegalAccessException, InstantiationException, IOException {
        RedirectResolver oRedirectResolver;
        String sRedirectResolverClassName;
        Log oLog;

        oLog = LogFactory.getLog(RedirectResolverInitializer.class);

        sRedirectResolverClassName = oRedirectResolverConfig.getClassName();

        if (Strings.isEmpty(sRedirectResolverClassName)) {
            oRedirectResolver = new ShortURLRedirectResolver(oRedirectMappingConfig, oClassLoader);
        } else {
            oLog.info("loading user-defined redirect resolver: " + sRedirectResolverClassName);

            Class oRedirectResolverClass = oClassLoader.loadClass(sRedirectResolverClassName);

            // attempt to find and call the single public constructor
            oRedirectResolver = (RedirectResolver) ObjectFactory.createObject(oRedirectResolverClass,
                    new Object[] { oServletConfig, oRedirectResolverConfig, oRedirectMappingConfig, oClassLoader },
                    new InitializerParameterProvider(oModelPool, "redirect-resolver-init"));
        }

        return oRedirectResolver;
    }
}