小试 ZK

 近日 ，研究 ZK 的CRUD ，一切都是开发工具生成的，第一次是在 Eclipse 3.4下，因为Tomcat 6 的某种原因转到了Myeclipse 7_0，噩梦开始了，开始是少包，导入了 commons-pool-1.4.jar ,接着又是因为Myeclipse 7_0 的web-flow  1.0的，而zk已经支持到web-flow2.x,不能说是ZK的错，再下载导入，后来又是spring-security 包不全，再下载导入。还是不行，这过程中提示spring ApplicationContext listener 出错，我晕了,无奈，再去检查各种配置文件，找到了问题， 工具生成 的
 <param-value>class:/config/application-context.xm>,不能理解这是哪个新版本的类支持的简写，改为
 <param- value>WEB-INF/classes/config/application-context.xml>,还有几个地方。发布，重启服务器，还是不行，什么orders property , 莫名的错误。换到ECLIPSE 3.4下，简单调试后，报的错为idscope null ,上GOOGLE G一把，新版本3.61就是报这个错，没办法，换到3.60吧，接下来，就什么问题，但是插入时如果把主键设为自动生成，出错，暂未解决。

 

 

public abstract class OrdersControllerBase { /****** Field Edit Components *******/ @Resource protected Intbox ordernumber; @Resource protected Datebox orderdate; @Resource protected Datebox requireddate; @Resource protected Datebox shippeddate; @Resource protected Textbox status; @Resource protected Textbox comments; @Resource protected Intbox customernumber; /****** Zul Specific Application Control *******/ //main control window @Resource protected Window ordersWin; //main window @Resource protected Listbox ordersDataListView; //domain object summary list @Resource protected Paging ordersPaging; //paging control for summary list @Resource protected Component ordersDetail; //domain object detail @Resource protected Component ordersEdit; //edit panel //buttons @Resource protected Button ordersCreate; //new button @Resource protected Button ordersUpdate; //edit button @Resource protected Button ordersDelete; //delete button @Resource protected Button ordersSave; //save button @Resource protected Button ordersCancel; //cancel button /****** Bean Field Edit Components *******/ protected Orders _tmpSelected; //store original selected entity /****** Controller state Fields *******/ //ZK databinder protected DataBinder binder; //Orders Model @Resource protected OrdersModelBase ordersModel = null; //operation transient state protected boolean _create; //when new a entity protected boolean _editMode; //switch to edit mode when doing editing(new/update) protected int _lastSelectedIndex = -1; //last selectedIndex before delete protected boolean _supportPaging = true; //switch to use Paging protected boolean _supportFilter = true; //TODO: switch to use Filter protected String _filter; //filters public OrdersControllerBase(){} @AfterCompose public void afterCompose() { //initial to read one record so binder.loadAll() will not trigger unnecessary SQL //The ordersWin.onClientInfo will load correct lines if (isSupportPaging()) { ordersModel.setMaxResults(1); } binder = new AnnotateDataBinder(ordersWin); ordersWin.setVariable("ordersBinder", binder, true); binder.loadAll(); final List model = (List) ordersDataListView.getModel(); if (!model.isEmpty()) { ordersModel.setSelected((Orders)model.get(0)); binder.loadComponent(ordersDetail); } setFocus(); } public boolean isSupportPaging() { return _supportPaging; } public boolean isSupportFilter() { return _supportFilter; } public boolean isSupportExtra() { return isSupportFilter() || isSupportPaging(); } public void setFilter(String filter) { _filter = filter; } public String getFilter() { return _filter; } @Resource protected Button ordersQuery; @EventHandler("ordersQuery.onClick") public void doFilter(){ if (Strings.isBlank(_filter)) { ordersModel.setWhere(null); ordersModel.setParameters(null); } else { //TODO:shall process filter string into JPQL where statement here prepareQueryConditions(); } refreshModel(); } protected void prepareQueryConditions(){ ordersModel.setWhere(" status LIKE :status OR comments LIKE :comments"); final Map params = new HashMap(); params.put("status", "%"+_filter+"%"); params.put("comments", "%"+_filter+"%"); ordersModel.setParameters(params); } public OrdersModelBase getModel() { return ordersModel; } public void setModel(OrdersModelBase ordersModel) { this.ordersModel = ordersModel; } public void refreshModel() { binder.loadAttribute(ordersDataListView, "model"); //reload model to force refresh } //-- view/edit mode --// public void setEditMode(boolean b) { _editMode = b; switchMode(); } public boolean isViewMode() { return !_editMode; } public boolean isEditMode() { return _editMode; } public boolean isCreate() { return _create; } public boolean isNotSelected() { return this.ordersModel.getSelected() == null; } private void switchMode() { binder.loadComponent(ordersDetail); //reload visible to force refresh setFocus(); } private void setFocus() { //post event so doSetFocus after the listbox is loaded ready Events.postEvent(new Event("onSetFocus", ordersWin)); } @EventHandler("ordersWin.onSetFocus") public void doSetFocus() { if (_editMode) { ordernumber.focus(); } else { if (((List)ordersDataListView.getModel()).isEmpty()) { //no result in list, focus on new button ordersCreate.focus(); } else { if (_create) { ordersCreate.focus(); } else { setListFocus(); } } } } private void setListFocus() { final Listitem li = ordersDataListView.getSelectedItem(); if (li != null) { li.focus(); } else { if (ordersModel.getSelected() != null) { ordersCreate.focus(); } else { ordersCreate.focus(); } } } @EventHandler("ordersWin.onOK") public void doOK(Event event) { if (isEditMode()) { doSave(event); } else { doUpdate(event); } } @EventHandler("ordersWin.onClientInfo") public void doClientInfo(Event event) { if (isSupportPaging()) { final ClientInfoEvent evt = (ClientInfoEvent) event; int height = evt.getDesktopHeight(); int pageSize = Math.max((height - 130) / 14, 10); //estimated page size, at least 10 int currentPageSize = ordersModel.getMaxResults(); if (currentPageSize != pageSize) { ordersModel.setMaxResults(pageSize); final int inviewIndex = ordersDataListView.getSelectedIndex() < 0 ? ordersModel.getOffset() : (ordersModel.getOffset() + ordersDataListView.getSelectedIndex()); final int activePage = inviewIndex / pageSize; //new active page final int offset = activePage * pageSize; ordersModel.setOffset(offset); refreshModel(); ordersPaging.setPageSize(pageSize); ordersPaging.setActivePage(activePage); setFocus(); } } } @EventHandler("ordersPaging.onPaging") public void doPaging(Event event) { if (isSupportPaging()) { final int activePage = ordersPaging.getActivePage(); final int offset = activePage * ordersPaging.getPageSize(); ordersModel.setOffset(offset); refreshModel(); setFocus(); } } //-- ordersDataListView control --// @EventHandler("ordersDataListView.onSelect") public void doSelect(Event event) { final int index = ordersDataListView.getSelectedIndex(); if (index >= 0) { _lastSelectedIndex = index; _create = false; } } //-- view mode control --// @EventHandler("ordersWin.onCtrlKey") public void doCtrlKey(Event event) { final List items = ordersDataListView.getItems(); if (!items.isEmpty() && (!_editMode || !_create)) { final int keycode = ((KeyEvent) event).getKeyCode(); if (keycode == KeyEvent.DOWN || keycode == KeyEvent.UP){ //handle no selected item case if (ordersDataListView.getSelectedIndex() < 0) { //no selected item //try our best to guess one if (_lastSelectedIndex >= 0) { final int index = Math.min(items.size() - 1, _lastSelectedIndex); ordersDataListView.setSelectedIndex(index); Events.sendEvent(new SelectEvent("onSelect", ordersDataListView, ordersDataListView.getSelectedItems())); } } setListFocus(); } } } @EventHandler("ordersCreate.onClick") public void doCreate(Event event) { if (isViewMode()) { //prepare a new Orders _tmpSelected = ordersModel.getSelected(); _create = true; ordersModel.setSelected(new Orders()); //switch to edit mode setEditMode(true); } } @EventHandler("ordersUpdate.onClick") public void doUpdate(Event event) { if (isViewMode()) { if (ordersModel.getSelected() != null) { _create = false; //switch to edit mode setEditMode(true); } } } @EventHandler("ordersDelete.onClick") public void doDelete(Event event) { if (isViewMode()) { if (ordersModel.getSelected() != null) { _create = false; newConfirmDelete().show(); } } } @EventHandler("ordersDelete.onDeleteYes") public void doDeleteYes(Event event) { if (isViewMode()) { beforeDelete(); try { ordersModel.delete(); ordersCreate.focus(); } catch (EntityNotFoundException e) { //ignore, already deleted by others } ordersModel.setSelected(null); //refresh the todoList refreshModel(); //update the ordersDetail switchMode(); } } //-- sorting --// public void doSort(Event event) { final Listheader lh = (Listheader) event.getTarget(); final String sortDirection = lh.getSortDirection(); //original direction if ("ascending".equals(sortDirection)) { final Comparator cmpr = lh.getSortDescending(); if (cmpr instanceof FieldComparator) { final String orderBy = ((FieldComparator)cmpr).getOrderBy(); ordersModel.setOrderBy(orderBy); //update query string } } else if ("descending".equals(sortDirection) || "natural".equals(sortDirection) || Strings.isBlank(sortDirection)) { final Comparator cmpr = lh.getSortAscending(); if (cmpr instanceof FieldComparator) { final String orderBy = ((FieldComparator)cmpr).getOrderBy(); ordersModel.setOrderBy(orderBy); //update query string } } if (isSupportPaging()) { refreshModel(); } setFocus(); } //-- edit mode control --// @EventHandler("ordersSave.onClick") public void doSave(Event event) { if (isEditMode()) { //validate validate(); //save into orders binder.saveComponent(ordersEdit); //reload model to force refresh //store into db if (_create) { beforeCreate(); this.ordersModel.persist(); } else { beforeUpdate(); try { this.ordersModel.merge(); } catch (EntityNotFoundException e1) { try { Messagebox.show(getUpdateDeletedMessage()); } catch (InterruptedException e2) { //ignore } } } //refresh the todoList refreshModel(); //switch to view mode setEditMode(false); } } @EventHandler("ordersCancel.onClick,ordersWin.onCancel") public void doCancel(Event event) { if (isEditMode()) { //restore to original selected Orders if cancel from new if (_create) { ordersModel.setSelected(_tmpSelected); _tmpSelected = null; } //switch to view mode setEditMode(false); } } //--To be override--// /** Validate the input field */ protected void validate() { ordernumber.getValue(); orderdate.getValue(); requireddate.getValue(); status.getValue(); customernumber.getValue(); } /** The info message when end user trying to update a "deleted" entity. */ protected String getUpdateDeletedMessage() { return "Cannot find the selected item, might have been deleted by others."; } /** Get a instance of ConfirmDelete class */ protected ConfirmDelete newConfirmDelete() { return new ConfirmDelete(); } /** Delete Confirmation */ protected class ConfirmDelete { /** Show the ConfirmDelete Messagebox */ public void show() { try { Messagebox.show(getConfirmMessage(), getConfirmTitle(), Messagebox.YES+Messagebox.NO, Messagebox.EXCLAMATION, new org.zkoss.zk.ui.event.EventListener() { public void onEvent(Event event) { if ("onYes".equals(event.getName())) { doYes(); } } } ); } catch (InterruptedException ex) { //ignore } } /** Operation when end user click Yes button in confirm delete Messagebox*/ public void doYes() { //have to send Event to change the current IdSpace to "ordersWin" Events.sendEvent(new Event("onDeleteYes", ordersDelete)); } } protected String getConfirmMessage(){ return "Are you sure?"; } protected String getConfirmTitle(){ return "Are you sure you want to delete the selected item?"; } protected void beforeCreate(){ } protected void beforeUpdate(){ } protected void beforeDelete(){ } }