/*
* 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.dispatcher.resolver;
import com.acciente.commons.reflect.ParameterProvider;
import com.acciente.commons.reflect.ParameterProviderException;
import com.acciente.induction.controller.*;
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.RedirectResolver;
import com.acciente.induction.template.TemplatingEngine;
import com.acciente.induction.util.ConstructorNotFoundException;
import com.acciente.induction.util.MethodNotFoundException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.InvocationTargetException;
/**
* Internal.
* This class handles the resolution of parameter values used for injection into controller methods.
*
* @created Jul 05, 2010
*
* @author Adinath Raveendra Raj
*/
public class ControllerResolverParameterProviderFactory
{
private ModelPool _oModelPool;
private Config.FileUpload _oFileUploadConfig;
private ClassLoader _oClassLoader;
public ControllerResolverParameterProviderFactory( ModelPool oModelPool,
Config.FileUpload oFileUploadConfig,
ClassLoader oClassLoader )
{
_oModelPool = oModelPool;
_oFileUploadConfig = oFileUploadConfig;
_oClassLoader = oClassLoader;
}
public ControllerResolverParameterProvider getParameterProvider( HttpServletRequest oRequest,
Throwable oThrowable )
{
return new ControllerResolverParameterProvider( oRequest, oThrowable );
}
private class ControllerResolverParameterProvider implements ParameterProvider
{
private HttpServletRequest _oRequest;
private Throwable _oThrowable;
private ControllerResolverParameterProvider( HttpServletRequest oRequest,
Throwable oThrowable )
{
_oRequest = oRequest;
_oThrowable = oThrowable;
}
public Object getParameter( Class oParamClass ) throws ParameterProviderException
{
final String sMessagePrefix = "controller-resolver-parameter-provider: error resolving value for type: ";
try
{
Object oParamValue = null;
if ( oParamClass.isAssignableFrom( Request.class ) )
{
oParamValue = new HttpRequest( _oRequest );
}
else if ( oParamClass.isAssignableFrom( Form.class ) )
{
oParamValue = _oModelPool.getSystemModel( oParamClass, _oRequest );
}
else if ( oParamClass.isAssignableFrom( HttpServletRequest.class ) )
{
oParamValue = _oRequest;
}
else if ( oParamClass.isAssignableFrom( ClassLoader.class ) )
{
oParamValue = _oClassLoader;
}
else if ( oParamClass.isAssignableFrom( Throwable.class ) )
{
oParamValue = _oThrowable;
}
else
{
// check to see if this is a model class
oParamValue = _oModelPool.getModel( oParamClass, _oRequest );
}
if ( oParamValue == null )
{
throw ( new ParameterProviderException( sMessagePrefix + oParamClass ) );
}
return oParamValue;
}
catch ( MethodNotFoundException e )
{ throw new ParameterProviderException( sMessagePrefix + oParamClass, e ); }
catch ( InvocationTargetException e )
{ throw new ParameterProviderException( sMessagePrefix + oParamClass, e ); }
catch ( ClassNotFoundException e )
{ throw new ParameterProviderException( sMessagePrefix + oParamClass, e ); }
catch ( ConstructorNotFoundException e )
{ throw new ParameterProviderException( sMessagePrefix + oParamClass, e ); }
catch ( IllegalAccessException e )
{ throw new ParameterProviderException( sMessagePrefix + oParamClass, e ); }
catch ( InstantiationException e )
{ throw new ParameterProviderException( sMessagePrefix + oParamClass, e ); }
}
}
}
// EOF