modelbaseaction.java

用jbuilder写的源程序

/*
 * Copyright 2003-2006 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 com.jdon.strutsutil;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.jdon.container.finder.ComponentKeys;
import com.jdon.controller.WebAppUtil;
import com.jdon.model.ModelManager;
import com.jdon.strutsutil.util.CreateViewPageUtil;
import com.jdon.strutsutil.util.EditeViewPageUtil;
import com.jdon.strutsutil.util.ViewPageUtil;
import com.jdon.util.Debug;

/**
 * @author <a href="mailto:[e-mail]">banq</a>
 *
 */
public abstract class ModelBaseAction extends Action{

    private final static String module = ModelBaseAction.class.getName();
    
    protected ModelManager modelManager;
    protected CreateViewPageUtil createViewPage;
    protected EditeViewPageUtil editeViewPage;
    protected ViewPageUtil viewPageUtil;


    public void intContext(ServletContext sc){
      if (modelManager == null){     
        modelManager = (ModelManager)WebAppUtil.getComponentInstance(ComponentKeys.MODEL_MANAGER, sc);
        createViewPage = new CreateViewPageUtil(modelManager);
        editeViewPage = new EditeViewPageUtil(modelManager);
        viewPageUtil = new ViewPageUtil(modelManager);
      }
    }
    
    public abstract ActionForward execute(ActionMapping actionMapping,
            ActionForm actionForm,
            HttpServletRequest request,
            HttpServletResponse response) throws Exception ;

    protected void checkConfigName(ActionMapping actionMapping) throws Exception {
        if (actionMapping.findForward(FormBeanUtil.FORWARD_FAILURE_NAME) == null)
          Debug.logError(
              "not found the forward name '" + FormBeanUtil.FORWARD_FAILURE_NAME +
              "' in struts-config.xml", module);
        else if (actionMapping.findForward(FormBeanUtil.FORWARD_SUCCESS_NAME) == null)
          Debug.logError(
              "not found the forward name '" + FormBeanUtil.FORWARD_SUCCESS_NAME +
              "' in struts-config.xml", module);

      }
}