/*
* Copyright 2008-2011 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.ControllerResolver;
import com.acciente.induction.resolver.ShortURLControllerResolver;
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.
* This is helper class that focuses on setting up the controller resolver used
* by the dispatcher servlet.
*
* @created Mar 15, 2008
*
* @author Adinath Raveendra Raj
*/
public class ControllerResolverInitializer
{
public static ControllerResolver getControllerResolver( Config.ControllerResolver oControllerResolverConfig,
Config.ControllerMapping oControllerMappingConfig,
ModelPool oModelPool,
ClassLoader oClassLoader,
ServletConfig oServletConfig )
throws ClassNotFoundException, InvocationTargetException, ConstructorNotFoundException, ParameterProviderException, IllegalAccessException, InstantiationException, IOException
{
ControllerResolver oControllerResolver;
String sControllerResolverClassName;
Log oLog;
oLog = LogFactory.getLog( ControllerResolverInitializer.class );
sControllerResolverClassName = oControllerResolverConfig.getClassName();
if ( Strings.isEmpty( sControllerResolverClassName ) )
{
oControllerResolver = new ShortURLControllerResolver( oControllerMappingConfig, oClassLoader );
}
else
{
oLog.info( "loading user-defined controller resolver: " + sControllerResolverClassName );
Class oControllerResolverClass = oClassLoader.loadClass( sControllerResolverClassName );
// attempt to find and call the single public constructor
oControllerResolver
= ( ControllerResolver )
ObjectFactory.createObject( oControllerResolverClass,
new Object[]{ oServletConfig,
oControllerResolverConfig,
oControllerMappingConfig,
oClassLoader },
new InitializerParameterProvider( oModelPool, "controller-resolver-init" ) );
}
return oControllerResolver;
}
}