Java tutorial
/** * Most of the code in the Qalingo project is copyrighted Hoteia and licensed * under the Apache License Version 2.0 (release version 0.8.0) * http://www.apache.org/licenses/LICENSE-2.0 * * Copyright (c) Hoteia, 2012-2014 * http://www.hoteia.com - http://twitter.com/hoteia - contact@hoteia.com * */ package org.hoteia.qalingo.web.mvc.controller.rule; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.validation.Valid; import org.apache.commons.lang.StringUtils; import org.hoteia.qalingo.core.Constants; import org.hoteia.qalingo.core.ModelConstants; import org.hoteia.qalingo.core.RequestConstants; import org.hoteia.qalingo.core.domain.AbstractRuleReferential; import org.hoteia.qalingo.core.domain.enumtype.BoUrls; import org.hoteia.qalingo.core.service.RuleReferentialService; import org.hoteia.qalingo.core.web.mvc.form.RuleForm; import org.hoteia.qalingo.core.web.mvc.viewbean.RuleViewBean; import org.hoteia.qalingo.core.web.resolver.RequestData; import org.hoteia.qalingo.core.web.servlet.ModelAndViewThemeDevice; import org.hoteia.qalingo.core.web.servlet.view.RedirectView; import org.hoteia.qalingo.web.mvc.controller.AbstractBusinessBackofficeController; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.support.PagedListHolder; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.validation.BindingResult; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.servlet.ModelAndView; /** * */ @Controller("ruleController") public class RuleController extends AbstractBusinessBackofficeController { @Autowired private RuleReferentialService ruleReferentialService; @RequestMapping(value = BoUrls.RULE_LIST_URL, method = RequestMethod.GET) public ModelAndView ruleList(final HttpServletRequest request, final Model model) throws Exception { ModelAndViewThemeDevice modelAndView = new ModelAndViewThemeDevice(getCurrentVelocityPath(request), BoUrls.RULE_LIST.getVelocityPage()); final RequestData requestData = requestUtil.getRequestData(request); String url = request.getRequestURI(); String page = request.getParameter(Constants.PAGINATION_PAGE_PARAMETER); String sessionKey = "PagedListHolder_Rules"; PagedListHolder<RuleViewBean> ruleViewBeanPagedListHolder = new PagedListHolder<RuleViewBean>(); if (StringUtils.isEmpty(page)) { ruleViewBeanPagedListHolder = initList(request, sessionKey); } else { ruleViewBeanPagedListHolder = (PagedListHolder) request.getSession().getAttribute(sessionKey); if (ruleViewBeanPagedListHolder == null) { ruleViewBeanPagedListHolder = initList(request, sessionKey); } int pageTarget = new Integer(page).intValue() - 1; int pageCurrent = ruleViewBeanPagedListHolder.getPage(); if (pageCurrent < pageTarget) { for (int i = pageCurrent; i < pageTarget; i++) { ruleViewBeanPagedListHolder.nextPage(); } } else if (pageCurrent > pageTarget) { for (int i = pageTarget; i < pageCurrent; i++) { ruleViewBeanPagedListHolder.previousPage(); } } } modelAndView.addObject(Constants.PAGINATION_PAGE_URL, url); modelAndView.addObject(Constants.PAGINATION_PAGE_PAGED_LIST_HOLDER, ruleViewBeanPagedListHolder); return modelAndView; } @RequestMapping(value = BoUrls.RULE_DETAILS_URL, method = RequestMethod.GET) public ModelAndView ruleDetails(final HttpServletRequest request, final Model model) throws Exception { ModelAndViewThemeDevice modelAndView = new ModelAndViewThemeDevice(getCurrentVelocityPath(request), BoUrls.RULE_DETAILS.getVelocityPage()); final String currentRuleCode = request.getParameter(RequestConstants.REQUEST_PARAMETER_RULE_CODE); final AbstractRuleReferential rule = ruleReferentialService.getRuleReferentialByCode(currentRuleCode); if (rule != null) { initRuleDetailsPage(requestUtil.getRequestData(request), model, modelAndView, rule); } else { final String url = requestUtil.getLastRequestUrl(request); return new ModelAndView(new RedirectView(url)); } return modelAndView; } @RequestMapping(value = BoUrls.RULE_EDIT_URL, method = RequestMethod.GET) public ModelAndView ruleEdit(final HttpServletRequest request, final Model model) throws Exception { ModelAndViewThemeDevice modelAndView = new ModelAndViewThemeDevice(getCurrentVelocityPath(request), BoUrls.RULE_EDIT.getVelocityPage()); final RequestData requestData = requestUtil.getRequestData(request); final String currentRuleCode = request.getParameter(RequestConstants.REQUEST_PARAMETER_RULE_CODE); final AbstractRuleReferential rule = ruleReferentialService.getRuleReferentialByCode(currentRuleCode); modelAndView.addObject(ModelConstants.RULE_VIEW_BEAN, backofficeViewBeanFactory.buildViewBeanRule(requestData, rule)); modelAndView.addObject(ModelConstants.RULE_FORM, backofficeFormFactory.buildRuleForm(requestData, rule)); return modelAndView; } @RequestMapping(value = BoUrls.RULE_EDIT_URL, method = RequestMethod.POST) public ModelAndView submitRuleEdit(final HttpServletRequest request, final Model model, @Valid RuleForm ruleForm, BindingResult result) throws Exception { final String currentRuleCode = request.getParameter(RequestConstants.REQUEST_PARAMETER_RULE_CODE); final AbstractRuleReferential rule = ruleReferentialService.getRuleReferentialByCode(currentRuleCode); if (result.hasErrors()) { return ruleEdit(request, model); } // UPDATE RULE // webBackofficeService.updateRule(rule, ruleForm); final String urlRedirect = backofficeUrlService.generateUrl(BoUrls.RULE_DETAILS, requestUtil.getRequestData(request), rule); return new ModelAndView(new RedirectView(urlRedirect)); } private PagedListHolder<RuleViewBean> initList(final HttpServletRequest request, String sessionKey) throws Exception { PagedListHolder<RuleViewBean> ruleViewBeanPagedListHolder = new PagedListHolder<RuleViewBean>(); final List<RuleViewBean> ruleViewBeans = new ArrayList<RuleViewBean>(); final List<AbstractRuleReferential> rules = ruleReferentialService.findRuleReferentials(); for (Iterator<AbstractRuleReferential> iterator = rules.iterator(); iterator.hasNext();) { AbstractRuleReferential rule = (AbstractRuleReferential) iterator.next(); ruleViewBeans .add(backofficeViewBeanFactory.buildViewBeanRule(requestUtil.getRequestData(request), rule)); } ruleViewBeanPagedListHolder = new PagedListHolder<RuleViewBean>(ruleViewBeans); ruleViewBeanPagedListHolder.setPageSize(Constants.PAGE_SIZE); request.getSession().setAttribute(sessionKey, ruleViewBeanPagedListHolder); return ruleViewBeanPagedListHolder; } protected void initRuleDetailsPage(final RequestData requestData, final Model model, final ModelAndViewThemeDevice modelAndView, final AbstractRuleReferential rule) throws Exception { modelAndView.addObject(ModelConstants.RULE_VIEW_BEAN, backofficeViewBeanFactory.buildViewBeanRule(requestData, rule)); } }