Package org.strecks.action.basic

Source Code of org.strecks.action.basic.BasicDispatchController

/*
* Copyright 2005-2006 the original author or authors.
*
* Licensed 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 org.strecks.action.basic;

import java.lang.reflect.Method;

import org.apache.struts.action.ActionMapping;
import org.strecks.action.BasicDispatchAction;
import org.strecks.context.ActionContext;
import org.strecks.controller.annotation.ActionInterface;
import org.strecks.dispatch.internal.DispatchControllerHelper;
import org.strecks.util.ReflectHelper;
import org.strecks.view.ViewAdapter;

/**
* Read-only action controller which mimics the behaviour of <code>DispatchAction</code>
* @see org.apache.struts.actions.DispatchAction
* @author Phil Zoio
*/
@ActionInterface(name = BasicDispatchAction.class)
public class BasicDispatchController extends BaseBasicController
{

  private DispatchControllerHelper helper;

  public BasicDispatchController()
  {
    super();
    helper = new DispatchControllerHelper();
  }

  @Override
  protected ViewAdapter executeAction(Object actionBean, ActionContext context)
  {

    BasicDispatchAction action = (BasicDispatchAction) actionBean;
    ActionMapping mapping = context.getMapping();
    String parameterName = mapping.getParameter();

    helper.checkParameterName(mapping, parameterName);

    String methodName = getMethodName(context, parameterName);
    String result = null;
    if (methodName == null)
    {
      result = action.unspecified();
    }
    else
    {
      Method method = helper.getMethod(action, methodName);
      result = ReflectHelper.invokeMethod(action, method, String.class);
    }

    return getActionForward(context, result);

  }

  protected DispatchControllerHelper getHelper()
  {
    return helper;
  }

  protected String getMethodName(ActionContext context, String parameterName)
  {
    String methodName = context.getRequest().getParameter(parameterName);
    return methodName;
  }

}
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