productlistaction.java

功能完善的java开发框架

/*
 * Copyright 2003-2005 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.framework.samples.jpetstore.presentation.action;

import javax.servlet.http.HttpServletRequest;

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

import com.jdon.controller.WebAppUtil;
import com.jdon.controller.model.Model;
import com.jdon.controller.model.PageIterator;
import com.jdon.framework.samples.jpetstore.domain.Category;
import com.jdon.framework.samples.jpetstore.service.ProductManager;
import com.jdon.strutsutil.ModelListAction;
import com.jdon.strutsutil.ModelListForm;

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

    /* (non-Javadoc)
     * @see com.jdon.strutsutil.ModelListAction#getPageIterator(javax.servlet.http.HttpServletRequest, int, int)
     */
    public PageIterator getPageIterator(HttpServletRequest request, int start,
            int count) {
        ProductManager productManager = (ProductManager) WebAppUtil.getService(
                "productManager", request);
        String categoryId = request.getParameter("categoryId");
        if (categoryId == null) return new PageIterator();
        return productManager.getProductIDsListByCategory(categoryId, start, count);
                 
    }

    /* (non-Javadoc)
     * @see com.jdon.strutsutil.ModelListAction#findModelByKey(javax.servlet.http.HttpServletRequest, java.lang.Object)
     */
    public Model findModelByKey(HttpServletRequest request, Object key) {
        ProductManager productManager = (ProductManager) WebAppUtil.getService(
                "productManager", request);
        return productManager.getProduct((String)key);
    }

    public void customizeListForm(ActionMapping actionMapping,
            ActionForm actionForm, HttpServletRequest request,
            ModelListForm modelListForm) throws Exception {
        ModelListForm listForm = (ModelListForm) actionForm;
        ProductManager productManager = (ProductManager) WebAppUtil.getService(
                "productManager", request);
        String categoryId = request.getParameter("categoryId");
        Category category = productManager.getCategory(categoryId);
        listForm.setOneModel(category);
    }
}