取消在相关实体之间的JPA更新传播
更新：我已经考虑了Chris的答案，但没有帮助-我仍然面临这个问题。我已经更新了下面的代码以合并Chris的答案。需要注意的是，在实现Chris的建议时，这些关系一直存在，但没有反映在view.xhtml页面上。我必须用调用取消在相关实体之间的JPA更新传播,jpa,persistence,glassfish-3,Jpa,Persistence,Glassfish 3,更新：我已经考虑了Chris的答案，但没有帮助-我仍然面临这个问题。我已经更新了下面的代码以合并Chris的答案。需要注意的是，在实现Chris的建议时，这些关系一直存在，但没有反映在view.xhtml页面上。我必须用调用GenericDao.update（）返回的对象替换db对象 我有以下关系： 一个客户对多个采购订单（PO） 一张订单对应多张发票 我已经读过双向关系，我知道如果我有双向关系，我应该在更新实体时更新关系的两侧 我执行以下步骤： 创建客户（客户1） 创建链接到客户1的采购订单（
GenericDao.update（）@RequestScoped
public class CustomerController extends FormRequestController
{
@Inject
private HTMLDataTableActionBean htmlDataTableActionBean;
@EJB
private ICustomerDao customerDao;
@Inject
private Customer customer;
@PostConstruct
public void init() throws DatabaseException
{
setEntityObjectList(findAll());
if (null == this.getCustomer())
{
setCustomer(new Customer());
}
}
public void processRequest(FormActionToPerform action) throws DatabaseException
{
switch (action)
{
case SHOW_ADD_VIEW:
setCustomer(new Customer());
break;
case SHOW_VIEW_FOR_LIST:
setEntityObjectList(findAll());
break;
case SHOW_EDIT_VIEW:
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
setCustomer((Customer) getHtmlDataTableActionBean()
.getSelectedEntityObject());
break;
case SHOW_DELETE_VIEW:
setCustomer((Customer) getHtmlDataTableActionBean()
.getSelectedEntityObject());
delete();
break;
}
}
public String doShowUIView(FormActionToPerform action)
{
String responseURL = "fail.xhtml";
if (null == this.customer)
{
return responseURL;
}
else
{
switch (action)
{
case SHOW_ADD_VIEW:
responseURL = "customer.xhtml";
break;
case SHOW_EDIT_VIEW:
responseURL = "customer.xhtml";
break;
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
responseURL = "viewCustomer.xhtml";
break;
case SHOW_DELETE_VIEW:
responseURL = "customerList.xhtml";
break;
case SHOW_VIEW_FOR_LIST:
if (this.entityObjectList.size() == 0)
{
setErrorMessage("No customers to display");
}
responseURL = "customerList.xhtml";
break;
default:
responseURL = "index.xhtml";
}
}
return responseURL;
}
public String save()
{
String url = "success.xhtml";
Customer existingCustomer = null;
try
{
existingCustomer =
customerDao.getCustomerByName(this.getCustomer().getName());
if(existingCustomer != null)
{
//there's already a customer with this name, don't make a new one
setErrorMessage("Customer already exists");
url = "fail.xhtml";
}
customerDao.update(customer);
}
catch (DatabaseException e)
{
setErrorMessage(e.toString());
e.printStackTrace();
url = "fail.xhtml";
}
return url;
}
}
@RequestScoped
public class PurchaseOrderController extends FormRequestController
{
@Inject
private HTMLDataTableActionBean htmlDataTableActionBean;
@EJB
private IPurchaseOrderDao purchaseOrderDao;
@EJB
private IInvoiceDao invoiceDao;
@EJB
private ICustomerDao customerDao;
@Inject
private PurchaseOrder purchaseOrder;
private List<SelectItem> customerList;
private String selectedCustomer;
@PostConstruct
public void init() throws DatabaseException
{
setEntityObjectList(findAll());
if (null == purchaseOrder)
{
purchaseOrder = new PurchaseOrder();
setEditMode(false);
}
}
public void processRequest(FormActionToPerform action)
throws DatabaseException
{
switch (action)
{
case SHOW_ADD_VIEW:
setPurchaseOrder(new PurchaseOrder());
break;
case SHOW_VIEW_FOR_LIST:
setEntityObjectList(findAll());
break;
case SHOW_EDIT_VIEW:
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
{
setPurchaseOrder(
(PurchaseOrder)getHtmlDataTableActionBean().
getSelectedEntityObject());
}
break;
case SHOW_DELETE_VIEW:
{
setPurchaseOrder(
(PurchaseOrder)getHtmlDataTableActionBean().
getSelectedEntityObject());
delete();
}
break;
}
}
String doShowUIView(FormActionToPerform action)
{
String responseURL = "fail.xhtml";
switch (action)
{
case SHOW_ADD_VIEW:
responseURL = "purchaseOrder.xhtml";
break;
case SHOW_EDIT_VIEW:
setEditMode(true);
setComponent(null);
responseURL = "purchaseOrder.xhtml";
break;
case SHOW_DELETE_VIEW:
case SHOW_VIEW_FOR_LIST:
if (this.entityObjectList.size() == 0)
{
setErrorMessage("No orders to display");
}
responseURL = "purchaseOrderList.xhtml";
break;
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
responseURL = "viewPurchaseOrder.xhtml";
break;
default:
responseURL = HOME;
}
return responseURL;
}
public String save()
{
String responseURL = "fail.xhtml";
try
{
PurchaseOrder dbPurchaseOrder =
purchaseOrderDao.getPurchaseOrderByName(purchaseOrder.getName());
if(dbPurchaseOrder == null)
{
dbPurchaseOrder = purchaseOrder;
}
Customer customer = customerDao.getCustomerByName(selectedCustomer);
dbPurchaseOrder.addToCustomer(customer);
purchaseOrder = purchaseOrderDao.update(dbPurchaseOrder);
//replace the not-yet-persisted dbPurchaseOrder object in customer
//with the persisted purchaseOrderobject returned from the update()
//call above.
customer.removePurchaseOrder(dbPurchaseOrder);
customer.addPurchaseOrder(purchaseOrder);
customerDao.update(customer);
System.out.println("# of Purchase orders for customer: "+
purchaseOrder.getCustomer().getPurchaseOrders().size());
//Output: # of Purchase orders for customer: 1
responseURL = "success.xhtml";
}
catch (DatabaseException e)
{
e.printStackTrace();
setErrorMessage(e.toString());
responseURL = null;
}
return responseURL;
}
}
@RequestScoped
public class InvoiceController extends FormRequestController
{
@Inject
private HTMLDataTableActionBean htmlDataTableActionBean;
@EJB
private IInvoiceDao invoiceDao;
@Inject
private Invoice invoice;
@EJB
private IPurchaseOrderDao purchaseOrderDao;
private List<SelectItem> purchaseOrderList;
private String selectedPurchaseOrder;
@PostConstruct
public void init() throws DatabaseException
{
setEntityObjectList(findAll());
if (null == invoice)
{
invoice = new Invoice();
setEditMode(false);
}
}
public void processRequest(FormActionToPerform action) throws DatabaseException
{
switch (action)
{
case SHOW_ADD_VIEW:
break;
case SHOW_VIEW_FOR_LIST:
setEntityObjectList(findAll());
break;
case SHOW_EDIT_VIEW:
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
{
setInvoice((Invoice)getHtmlDataTableActionBean().
getSelectedEntityObject());
}
break;
case SHOW_DELETE_VIEW:
{
setInvoice((Invoice)getHtmlDataTableActionBean().
getSelectedEntityObject());
delete();
}
break;
}
}
String doShowUIView(FormActionToPerform action)
{
String responseUrl = "fail.xhtml";
if (null == invoice)
{
System.out.println("invoice == null");
return responseUrl;
}
else
{
switch (action)
{
case SHOW_ADD_VIEW:
responseUrl = "invoice.xhtml";
break;
case SHOW_EDIT_VIEW:
setEditMode(true);
setComponent(null);
responseUrl = "invoice.xhtml";
break;
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
responseUrl = "viewInvoice.xhtml";
break;
case SHOW_DELETE_VIEW:
case SHOW_VIEW_FOR_LIST:
if (this.entityObjectList.size() == 0)
{
setErrorMessage("no invoices to display");
}
responseUrl = "invoiceList.xhtml";
break;
default:
responseUrl = "index.xhtml";
}
}
return responseUrl;
}
public String save()
{
String responseUrl = "fail.xhtml";
try
{
Invoice dbInvoice = invoiceDao.getInvoiceByName(invoice.getName());
if(dbInvoice == null)
{
//this is a new invoice
dbInvoice = invoice;
}
PurchaseOrder purchaseOrder =
purchaseOrderDao.getPurchaseOrderByName(selectedPurchaseOrder);
dbInvoice.addToPurchaseOrder(purchaseOrder);
invoice = invoiceDao.update(dbInvoice);
//replace the not-yet-persisted dbInvoice object in purchaseOrder
//with the persisted invoice object returned from the update() call above.
purchaseOrder.removeInvoice(dbInvoice);
purchaseOrder.addInvoice(invoice);
purchaseOrderDao.update(purchaseOrder);
System.out.println("# of Invoices for purchase order: "+
invoice.getPurchaseOrder().getInvoices().size());
//Output: # of Invoices for purchase order: 1
responseUrl = "success.xhtml";
}
catch (Exception e)
{
System.out.println(e.toString());
e.printStackTrace();
setErrorMessage(e.toString());
}
return responseUrl;
}
}
public abstract class FormRequestController implements NavigationConstants
{
protected enum FormActionToPerform {
SHOW_ADD_VIEW,
SHOW_EDIT_VIEW,
SHOW_DELETE_VIEW,
SHOW_VIEW_TO_VIEW_SELECTED_OBJECT,
SHOW_VIEW_FOR_LIST;
}
protected FacesContext context;
protected List<?> entityObjectList;
private UIComponent component;
protected boolean editMode;
protected String componentId = null;
public String showViewDataTable() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_VIEW_FOR_LIST);
return doShowUIView(FormActionToPerform.SHOW_VIEW_FOR_LIST);
}
public String showViewToAdd() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_ADD_VIEW);
return doShowUIView(FormActionToPerform.SHOW_ADD_VIEW);
}
public String showViewToEdit() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_EDIT_VIEW);
return doShowUIView(FormActionToPerform.SHOW_EDIT_VIEW);
}
public String showViewToDeleteDetails() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_DELETE_VIEW);
return doShowUIView(FormActionToPerform.SHOW_DELETE_VIEW);
}
public String showViewToViewDetails() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_VIEW_TO_VIEW_SELECTED_OBJECT);
return doShowUIView(FormActionToPerform.SHOW_VIEW_TO_VIEW_SELECTED_OBJECT);
}
abstract String doShowUIView(FormActionToPerform action);
abstract void processRequest(FormActionToPerform action) throws DatabaseException;
protected void bindData() {
}
abstract String save();
abstract void delete() throws DatabaseException;
public List<?> getEntityObjectList() {
return entityObjectList;
}
public void setEntityObjectList(List<?> entityObjectList) {
this.entityObjectList = entityObjectList;
}
public FacesContext getContext() {
setContext(FacesContext.getCurrentInstance());
return context;
}
public void setContext(FacesContext context) {
this.context = context;
}
public UIComponent getComponent() {
return component;
}
public void setComponent(UIComponent component) {
this.component = component;
}
}
@RequestScoped
公共类PurchaseOrderController扩展FormRequestController
{
@注入
私有HTMLDataTableActionBean HTMLDataTableActionBean；
@EJB
私有IPURCHASEORDEDAO PURCHASEORDEDAO；
@EJB
私人发票；
@EJB
私人ICCustomerDao customerDao；
@注入
私人采购订单；
私人名单客户名单；
私有字符串selectedCustomer；
@施工后
public void init（）引发DatabaseException
{
setEntityObjectList（findAll（））；
if（null==采购订单）
{
purchaseOrder=新的purchaseOrder（）；
setEditMode（假）；
}
}
公共作废处理请求（FormActionToPerform操作）
抛出数据库异常
{
开关（动作）
{
案例显示\添加\视图：
setPurchaseOrder（新的PurchaseOrder（））；
打破
案例显示\u视图\u用于\u列表：
setEntityObjectList（findAll（））；
打破
案例显示\编辑\视图：
案例显示\u视图\u至\u视图\u所选\u对象：
{
设置采购订单(
（PurchaseOrder）getHtmlDataTableActionBean（）。
getSelectedEntityObject（））；
}
打破
案例显示\删除\视图：
{
设置采购订单(
（PurchaseOrder）getHtmlDataTableActionBean（）。
getSelectedEntityObject（））；
删除（）；
}
打破
}
}
字符串doShowUIView（FormActionToPerform操作）
{
字符串responseURL=“fail.xhtml”；
开关（动作）
{
案例显示\添加\视图：
responseURL=“purchaseOrder.xhtml”；
打破
案例显示\编辑\视图：
setEditMode（真）；
setComponent（null）；
responseURL=“purchaseOrder.xhtml”；
打破
案例显示\删除\视图：
案例显示\u视图\u用于\u列表：
if（this.entityObjectList.size（）==0）
{
setErrorMessage（“无需显示订单”）；
}
responseURL=“purchaseOrderList.xhtml”；
打破
案例显示\u视图\u至\u视图\u所选\u对象：
responseURL=“viewPurchaseOrder.xhtml”；
打破
违约：
responseURL=家；
}
返回应答器；
}
公共字符串保存（）
{
字符串responseURL=“fail.xhtml”；
尝试
{
采购订单数据库采购订单=
getPurchaseOrderByName（purchaseOrder.getName（））；
if（dbPurchaseOrder==null）
{
dbPurchaseOrder=采购订单；
}
Customer Customer=customerDao.getCustomerByName（selectedCustomer）；
dbPurchaseOrder.addToCustomer（客户）；
purchaseOrder=purchaseOrderDao.update（dbPurchaseOrder）；
//替换customer中尚未持久化的dbPurchaseOrder对象
//使用从更新（）返回的持久化purchaseOrderobject
//给上面打电话。
customer.removePurchaseOrder（dbPurchaseOrder）；
customer.addPurchaseOrder（purchaseOrder）；
客户道更新（客户）；
System.out.println（“#客户的采购订单：”+
getCustomer（）.getPurchaseOrders（）.size（））；
//输出：#客户的采购订单：1
responseURL=“success.xhtml”；
}
捕获（数据库异常）
{
e、 printStackTrace（）；
setErrorMessage（例如toString（））；
responseURL=null；
}
返回应答器；
}
}
@RequestScoped
public class CustomerController extends FormRequestController
{
@Inject
private HTMLDataTableActionBean htmlDataTableActionBean;
@EJB
private ICustomerDao customerDao;
@Inject
private Customer customer;
@PostConstruct
public void init() throws DatabaseException
{
setEntityObjectList(findAll());
if (null == this.getCustomer())
{
setCustomer(new Customer());
}
}
public void processRequest(FormActionToPerform action) throws DatabaseException
{
switch (action)
{
case SHOW_ADD_VIEW:
setCustomer(new Customer());
break;
case SHOW_VIEW_FOR_LIST:
setEntityObjectList(findAll());
break;
case SHOW_EDIT_VIEW:
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
setCustomer((Customer) getHtmlDataTableActionBean()
.getSelectedEntityObject());
break;
case SHOW_DELETE_VIEW:
setCustomer((Customer) getHtmlDataTableActionBean()
.getSelectedEntityObject());
delete();
break;
}
}
public String doShowUIView(FormActionToPerform action)
{
String responseURL = "fail.xhtml";
if (null == this.customer)
{
return responseURL;
}
else
{
switch (action)
{
case SHOW_ADD_VIEW:
responseURL = "customer.xhtml";
break;
case SHOW_EDIT_VIEW:
responseURL = "customer.xhtml";
break;
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
responseURL = "viewCustomer.xhtml";
break;
case SHOW_DELETE_VIEW:
responseURL = "customerList.xhtml";
break;
case SHOW_VIEW_FOR_LIST:
if (this.entityObjectList.size() == 0)
{
setErrorMessage("No customers to display");
}
responseURL = "customerList.xhtml";
break;
default:
responseURL = "index.xhtml";
}
}
return responseURL;
}
public String save()
{
String url = "success.xhtml";
Customer existingCustomer = null;
try
{
existingCustomer =
customerDao.getCustomerByName(this.getCustomer().getName());
if(existingCustomer != null)
{
//there's already a customer with this name, don't make a new one
setErrorMessage("Customer already exists");
url = "fail.xhtml";
}
customerDao.update(customer);
}
catch (DatabaseException e)
{
setErrorMessage(e.toString());
e.printStackTrace();
url = "fail.xhtml";
}
return url;
}
}
@RequestScoped
public class PurchaseOrderController extends FormRequestController
{
@Inject
private HTMLDataTableActionBean htmlDataTableActionBean;
@EJB
private IPurchaseOrderDao purchaseOrderDao;
@EJB
private IInvoiceDao invoiceDao;
@EJB
private ICustomerDao customerDao;
@Inject
private PurchaseOrder purchaseOrder;
private List<SelectItem> customerList;
private String selectedCustomer;
@PostConstruct
public void init() throws DatabaseException
{
setEntityObjectList(findAll());
if (null == purchaseOrder)
{
purchaseOrder = new PurchaseOrder();
setEditMode(false);
}
}
public void processRequest(FormActionToPerform action)
throws DatabaseException
{
switch (action)
{
case SHOW_ADD_VIEW:
setPurchaseOrder(new PurchaseOrder());
break;
case SHOW_VIEW_FOR_LIST:
setEntityObjectList(findAll());
break;
case SHOW_EDIT_VIEW:
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
{
setPurchaseOrder(
(PurchaseOrder)getHtmlDataTableActionBean().
getSelectedEntityObject());
}
break;
case SHOW_DELETE_VIEW:
{
setPurchaseOrder(
(PurchaseOrder)getHtmlDataTableActionBean().
getSelectedEntityObject());
delete();
}
break;
}
}
String doShowUIView(FormActionToPerform action)
{
String responseURL = "fail.xhtml";
switch (action)
{
case SHOW_ADD_VIEW:
responseURL = "purchaseOrder.xhtml";
break;
case SHOW_EDIT_VIEW:
setEditMode(true);
setComponent(null);
responseURL = "purchaseOrder.xhtml";
break;
case SHOW_DELETE_VIEW:
case SHOW_VIEW_FOR_LIST:
if (this.entityObjectList.size() == 0)
{
setErrorMessage("No orders to display");
}
responseURL = "purchaseOrderList.xhtml";
break;
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
responseURL = "viewPurchaseOrder.xhtml";
break;
default:
responseURL = HOME;
}
return responseURL;
}
public String save()
{
String responseURL = "fail.xhtml";
try
{
PurchaseOrder dbPurchaseOrder =
purchaseOrderDao.getPurchaseOrderByName(purchaseOrder.getName());
if(dbPurchaseOrder == null)
{
dbPurchaseOrder = purchaseOrder;
}
Customer customer = customerDao.getCustomerByName(selectedCustomer);
dbPurchaseOrder.addToCustomer(customer);
purchaseOrder = purchaseOrderDao.update(dbPurchaseOrder);
//replace the not-yet-persisted dbPurchaseOrder object in customer
//with the persisted purchaseOrderobject returned from the update()
//call above.
customer.removePurchaseOrder(dbPurchaseOrder);
customer.addPurchaseOrder(purchaseOrder);
customerDao.update(customer);
System.out.println("# of Purchase orders for customer: "+
purchaseOrder.getCustomer().getPurchaseOrders().size());
//Output: # of Purchase orders for customer: 1
responseURL = "success.xhtml";
}
catch (DatabaseException e)
{
e.printStackTrace();
setErrorMessage(e.toString());
responseURL = null;
}
return responseURL;
}
}
@RequestScoped
public class InvoiceController extends FormRequestController
{
@Inject
private HTMLDataTableActionBean htmlDataTableActionBean;
@EJB
private IInvoiceDao invoiceDao;
@Inject
private Invoice invoice;
@EJB
private IPurchaseOrderDao purchaseOrderDao;
private List<SelectItem> purchaseOrderList;
private String selectedPurchaseOrder;
@PostConstruct
public void init() throws DatabaseException
{
setEntityObjectList(findAll());
if (null == invoice)
{
invoice = new Invoice();
setEditMode(false);
}
}
public void processRequest(FormActionToPerform action) throws DatabaseException
{
switch (action)
{
case SHOW_ADD_VIEW:
break;
case SHOW_VIEW_FOR_LIST:
setEntityObjectList(findAll());
break;
case SHOW_EDIT_VIEW:
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
{
setInvoice((Invoice)getHtmlDataTableActionBean().
getSelectedEntityObject());
}
break;
case SHOW_DELETE_VIEW:
{
setInvoice((Invoice)getHtmlDataTableActionBean().
getSelectedEntityObject());
delete();
}
break;
}
}
String doShowUIView(FormActionToPerform action)
{
String responseUrl = "fail.xhtml";
if (null == invoice)
{
System.out.println("invoice == null");
return responseUrl;
}
else
{
switch (action)
{
case SHOW_ADD_VIEW:
responseUrl = "invoice.xhtml";
break;
case SHOW_EDIT_VIEW:
setEditMode(true);
setComponent(null);
responseUrl = "invoice.xhtml";
break;
case SHOW_VIEW_TO_VIEW_SELECTED_OBJECT:
responseUrl = "viewInvoice.xhtml";
break;
case SHOW_DELETE_VIEW:
case SHOW_VIEW_FOR_LIST:
if (this.entityObjectList.size() == 0)
{
setErrorMessage("no invoices to display");
}
responseUrl = "invoiceList.xhtml";
break;
default:
responseUrl = "index.xhtml";
}
}
return responseUrl;
}
public String save()
{
String responseUrl = "fail.xhtml";
try
{
Invoice dbInvoice = invoiceDao.getInvoiceByName(invoice.getName());
if(dbInvoice == null)
{
//this is a new invoice
dbInvoice = invoice;
}
PurchaseOrder purchaseOrder =
purchaseOrderDao.getPurchaseOrderByName(selectedPurchaseOrder);
dbInvoice.addToPurchaseOrder(purchaseOrder);
invoice = invoiceDao.update(dbInvoice);
//replace the not-yet-persisted dbInvoice object in purchaseOrder
//with the persisted invoice object returned from the update() call above.
purchaseOrder.removeInvoice(dbInvoice);
purchaseOrder.addInvoice(invoice);
purchaseOrderDao.update(purchaseOrder);
System.out.println("# of Invoices for purchase order: "+
invoice.getPurchaseOrder().getInvoices().size());
//Output: # of Invoices for purchase order: 1
responseUrl = "success.xhtml";
}
catch (Exception e)
{
System.out.println(e.toString());
e.printStackTrace();
setErrorMessage(e.toString());
}
return responseUrl;
}
}
public abstract class FormRequestController implements NavigationConstants
{
protected enum FormActionToPerform {
SHOW_ADD_VIEW,
SHOW_EDIT_VIEW,
SHOW_DELETE_VIEW,
SHOW_VIEW_TO_VIEW_SELECTED_OBJECT,
SHOW_VIEW_FOR_LIST;
}
protected FacesContext context;
protected List<?> entityObjectList;
private UIComponent component;
protected boolean editMode;
protected String componentId = null;
public String showViewDataTable() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_VIEW_FOR_LIST);
return doShowUIView(FormActionToPerform.SHOW_VIEW_FOR_LIST);
}
public String showViewToAdd() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_ADD_VIEW);
return doShowUIView(FormActionToPerform.SHOW_ADD_VIEW);
}
public String showViewToEdit() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_EDIT_VIEW);
return doShowUIView(FormActionToPerform.SHOW_EDIT_VIEW);
}
public String showViewToDeleteDetails() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_DELETE_VIEW);
return doShowUIView(FormActionToPerform.SHOW_DELETE_VIEW);
}
public String showViewToViewDetails() throws DatabaseException {
processRequest(FormActionToPerform.SHOW_VIEW_TO_VIEW_SELECTED_OBJECT);
return doShowUIView(FormActionToPerform.SHOW_VIEW_TO_VIEW_SELECTED_OBJECT);
}
abstract String doShowUIView(FormActionToPerform action);
abstract void processRequest(FormActionToPerform action) throws DatabaseException;
protected void bindData() {
}
abstract String save();
abstract void delete() throws DatabaseException;
public List<?> getEntityObjectList() {
return entityObjectList;
}
public void setEntityObjectList(List<?> entityObjectList) {
this.entityObjectList = entityObjectList;
}
public FacesContext getContext() {
setContext(FacesContext.getCurrentInstance());
return context;
}
public void setContext(FacesContext context) {
this.context = context;
}
public UIComponent getComponent() {
return component;
}
public void setComponent(UIComponent component) {
this.component = component;
}
}
@RequestScoped
公共类InvoiceController扩展FormRequestController
{
@注入
私有HTMLDataTableActionBean HTMLDataTableActionBean；
@EJB
私人发票；
@注入
私人发票；
@EJB
私有IPURCHASEORDEDAO PURCHASEORDEDAO；
私有列表purchaseOrderList；
私有字符串selectedPurchaseOrder；
@施工后
public void init（）引发DatabaseException
{
setEntityObjectList（findAll（））；
如果（空==发票）
{
发票=新发票（）；
setEditMode（假）；
}
}
public void processRequest（FormActionToPerform操作）引发DatabaseException
{
开关（动作）
{
if(!purchaseOrder.getInvoices().contains(this))
{
purchaseOrder.addInvoice(this);
}