updatecategorytreeaction.java

使用EJB实现的网上商城

package com.jdon.estore.web.catalog.tree;

import java.util.Collection;
import com.jdon.strutsutil.treeview.*;
import javax.servlet.http.*;

import com.jdon.controller.model.Model;
import com.jdon.controller.events.*;

import com.jdon.estore.catalog.tree.CategoryTreeManagerLocal;
import com.jdon.estore.FrameworkServices;

import javax.servlet.http.HttpServletRequest;
import com.jdon.bussinessproxy.ServiceServerFactory;
import com.jdon.bussinessproxy.EJBDefinition;

/**
 * 更新显示树形结构
 * <p>Copyright: Jdon.com Copyright (c) 2003</p>
 * <p>Company: 上海解道计算机技术有限公司</p>
 * @author not attributable
 * @version 1.0
 */
public class UpdateCategoryTreeAction extends UpdateTreeAction {
  private final static ServiceServerFactory sf = ServiceServerFactory.
      getInstance();

  public Collection getChildernNode(HttpServletRequest request,
                                           ViewNode node) throws Exception {
    CategoryTreeManagerLocal categoryTree = (CategoryTreeManagerLocal) sf.
        getService(FrameworkServices.CategoryTreeEJB, request);
    return categoryTree.getChildern(node.getKey());
  }

}