I am trying to create a login page for my application but i am stuck on the very first step. My form is working fine before using session facade in my bean, after adding session facade i got property not found exception:
My page is:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<f:view contentType="text/html">
<h:head>
<f:facet name="first">
<meta content='text/html; charset=UTF-8' http-equiv="Content-Type"/>
<title>PrimeFaces</title>
</f:facet>
</h:head>
<h:body>
<h:form>
<p:panelGrid columns="2">
<p:outputLabel value ="Username"/> <p:inputText id="userName" value="#{loginBean.user}"/>
<p:outputLabel value ="Password"/> <p:inputText id="password" value="#{loginBean.password}"/>
</p:panelGrid>
<p:commandButton value="Login" actionListener="#{loginBean.doLogin}"/>
</h:form>
</h:body>
</f:view>
</html>
Working Bean Code is :
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package Beans;
import entities.Program;
import entities.ProgramFacade;
import entities.ProgramFacadeLocal;
import javax.inject.Named;
import javax.enterprise.context.SessionScoped;
import java.io.Serializable;
import javax.annotation.ManagedBean;
import javax.ejb.EJB;
import javax.faces.event.ActionEvent;
/**
*
* #author Salman Ahmed Ansari
*/
#Named(value = "loginBean")
#SessionScoped
public class LoginBean implements Serializable {
/**
* Creates a new instance of LoginBean
*/
private String user;
private String password;
public String getUser() {
return user;
}
public String getPassword() {
return password;
}
public void setUser(String user) {
this.user = user;
}
public void setPassword(String password) {
this.password = password;
}
public void doLogin(ActionEvent listener){
System.out.println(user);
System.out.println(password);
}
public LoginBean() {
}
}
and not working bean code is :
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package Beans;
import entities.Program;
import entities.ProgramFacade;
import entities.ProgramFacadeLocal;
import javax.inject.Named;
import javax.enterprise.context.SessionScoped;
import java.io.Serializable;
import javax.annotation.ManagedBean;
import javax.ejb.EJB;
import javax.faces.event.ActionEvent;
/**
*
* #author Salman Ahmed Ansari
*/
#Named(value = "loginBean")
#SessionScoped
public class LoginBean implements Serializable {
#EJB
private ProgramFacade programFacade;
/**
* Creates a new instance of LoginBean
*/
private String user;
private String password;
public String getUser() {
return user;
}
public String getPassword() {
return password;
}
public void setUser(String user) {
this.user = user;
}
public void setPassword(String password) {
this.password = password;
}
public void doLogin(ActionEvent listener){
System.out.println(user);
System.out.println(password);
}
public LoginBean() {
}
}
What triggers this exception?
Thanks in Advance ..
Related
I'm building a simple e-shop with JSF. There is a page with a list of all the products (product-list.xhtml) and then a detail page for each product (product.xhtml). product-list.xhtml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:f="http://xmlns.jcp.org/jsf/core">
<h:head>
</h:head>
<h:body>
<f:view>
<h:outputText value="Number of items in the cart: #{shoppingCart.numberOfSelectedProducts}"/>
<h:link value="Cart" outcome="cart.xhtml"/>
<h:dataTable value="#{productController.products}" var="p">
<h:column>
#{p.name}
<h:commandLink action="product.xhtml" value="Detail">
<f:actionListener target="#{product.id}" value="#{p.id}"/>
</h:commandLink>
</h:column>
<h:column>
</h:column>
</h:dataTable>
</f:view>
</h:body>
</html>
then the product.xhtml looks following:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:f="http://xmlns.jcp.org/jsf/core">
<head></head>
<!--f:metadata>
<f:event type="preRenderView" listener="#{shoppingCart.loadSelectedProduct(param.id)}"/>
</f:metadata -->
<body>
<f:view>
<h:graphicImage value="resources/images/img.jpg"/>
<h:outputLabel value="The value of shoppingCart.selectedProduct is: #{shoppingCart.selectedProduct.id}"/>
</f:view>
</body>
</html>
When I run the App in the debugger, the value set correctly to the selectedProduct attribute, but then it's not accessible in the page - the output of product.xhtml looks following (if the chosen product has ID 4):
The value of shoppingCart.selectedProduct is:
Products on the main page are loaded from RequestScoped bean's (productController) property. The ShoppingCart is then a SessionScoped bean with injected productController instance.
package main.java;
import javax.annotation.PostConstruct;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import java.io.Serializable;
import java.util.List;
#Named
#SessionScoped
public class ShoppingCart implements Serializable {
private List<Product> selectedProducts;
private int numberOfSelectedProducts;
private Product selectedProduct;
public Product getSelectedProduct() {
return selectedProduct;
}
public void setSelectedProduct(Product selectedProduct) {
this.selectedProduct = selectedProduct;
}
public List<Product> getSelectedProducts() {
return selectedProducts;
}
public void setSelectedProducts(List<Product> selectedProducts) {
this.selectedProducts = selectedProducts;
}
public int getNumberOfSelectedProducts() {
return numberOfSelectedProducts;
}
public void setNumberOfSelectedProducts(int numberOfSelectedProducts) {
this.numberOfSelectedProducts = numberOfSelectedProducts;
}
}
import javax.annotation.PostConstruct;
import javax.faces.view.ViewScoped;
import javax.inject.Inject;
import javax.inject.Named;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
#ViewScoped
#Named
public class ProductController implements Serializable {
private List<Product> products;
#Inject
private ShoppingCart shoppingCart;
public void setProducts(List<Product> products) {
this.products = products;
}
public ShoppingCart getShoppingCart() {
return shoppingCart;
}
public void setShoppingCart(ShoppingCart shoppingCart) {
this.shoppingCart = shoppingCart;
}
public List<Product> getProducts() {
return products;
}
//v teto metode se pote budou nacitat produkty z DB
#PostConstruct
public void loadItems(){
products = new ArrayList<>();
products.add(new Product(1, "Nazev1", 11, "Popis1"));
products.add(new Product(2, "Nazev2", 22, "Popis2"));
products.add(new Product(3, "Nazev3", 33, "Popis3"));
products.add(new Product(4, "Nazev4", 44, "Popis4"));
products.add(new Product(5, "Nazev5", 55, "Popis5"));
products.add(new Product(6, "Nazev6", 66, "Popis6"));
products.add(new Product(7, "Nazev7", 77, "Popis7"));
}
public Product findById(final int id) {
List<Product> product = products.stream().filter(p -> p.getId() == id).limit(1).collect(Collectors.toList());
return product.get(0);
}
}
package main.java;
import javax.annotation.PostConstruct;
import javax.faces.view.ViewScoped;
import javax.inject.Named;
import java.io.Serializable;
#Named
#ViewScoped
public class Product implements Serializable {
private int id;
private String name;
private double price;
private String description;
public Product(int id, String name, double price, String description) {
this.id = id;
this.name = name;
this.price = price;
this.description = description;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
#PostConstruct
public void init(){
System.out.println("Product created");
}
}
If you add a #PostConstruct method to your #SessionScoped bean like this:
#PostConstruct
public void init() {
System.out.println("ShoppingCart.init()");
}
You will notice that your bean is instantiated several times per request - at least one time for each #{shoppengCart...} expression. This is because using the deprecated annotation #javax.faces.bean.SessionScoped within CDI environment behaves like #NoneScoped.
You should instead use javax.enterprise.context.SessionScoped for your shopping cart.
For display of a selected product I would suggest to add a #ViewScoped bean (javax.faces.view.ViewScoped, not javax.faces.bean.ViewScoped) or even #RequestScope if you don't do AJAX stuff. (javax.enterprise.context.RequestScoped, not javax.faces.bean.RequestScoped).
Which IDE do you use - didn't it notify you that the sope used by you is deprecated?
For further reading see: How to choose the right bean scope?
In addition to the scope problem, you should probably use f:viewParam instead of f:event to inject the URL query parameter into the bean:
Instead of:
<f:metadata>
<f:event type="preRenderView" listener="#{shoppingCart.loadSelectedProduct(param.id)}"/>
</f:metadata>
do this:
<f:metadata>
<f:viewParam name="id" value="#{productDisplayBean.selectedProductId}"/>
</f:metadata>
I try to use tag <ace:datatable> inside composite component Mainly it works well. I want to getting row data from the table to use it in bean but when I click on the row, I get error message
Internal server error
I need your help (BalusC :)) to fix this bug.
This is my component:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:cc="http://java.sun.com/jsf/composite"
xmlns:ace="http://www.icefaces.org/icefaces/components"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:icecore="http://www.icefaces.org/icefaces/core"
xmlns:ice="http://www.icesoft.com/icefaces/component" >
<head>
<title>IGNORED</title>
</head>
<body>
<ui:composition>
<cc:interface componentType="partnercard">
<!-- properties -->
...
</cc:interface>
<cc:implementation>
<div id="#{cc.clientId}">
<ace:dataTable id="partnerTable"
value="#{cc.partnersList}"
binding="#{cc.partnersTable}"
var="partner"
paginator="true"
paginatorPosition="bottom"
rows="10"
style="font-size: 11px;margin-top: 10px;"
selectionMode="single"
stateMap="#{cc.stateMap}" >
<ace:ajax event="select" render="#this" execute="#this" />
<ace:column id="id"
headerText="ID"
sortBy="#{partner.id}"
filterBy="#{partner.id}"
filterMatchMode="contains"
rendered="false">
<h:outputText id="idCell" value="#{partner.id}"/>
</ace:column>
<ace:column id="name"
headerText="Name"
sortBy="#{partner.name}"
filterBy="#{partner.name}"
filterMatchMode="contains">
<h:outputText id="nameCell" value="#{partner.name}"/>
</ace:column>
</ace:dataTable>
</div>
</cc:implementation>
</ui:composition>
</body>
</html>
Component backing bean
import java.io.IOException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.faces.application.FacesMessage;
import javax.faces.component.FacesComponent;
import javax.faces.component.NamingContainer;
import javax.faces.component.UIInput;
import javax.faces.component.html.*;
import javax.faces.component.UINamingContainer;
import javax.faces.context.FacesContext;
import javax.faces.component.UIData;
import org.icefaces.ace.model.table.RowStateMap;
#FacesComponent("partnercard")
public class partnercard extends UINamingContainer implements Serializable {
private RowStateMap stateMap = new RowStateMap();
private List<PartnerData> partnersList = new ArrayList<PartnerData>();
private UIData partnersTable; // поиск партнера - таблица со списком партнеров
#Override
public String getFamily() {
return UINamingContainer.COMPONENT_FAMILY;
}
public void encodeBegin(FacesContext context) throws IOException {
super.encodeBegin(context);
}
public UIData getPartnersTable() {
return partnersTable;
}
public void setPartnersTable(UIData partnersTable) {
this.partnersTable = partnersTable;
}
public RowStateMap getStateMap() {
return stateMap;
}
public void setStateMap(RowStateMap stateMap) {
this.stateMap = stateMap;
}
public List<PartnerData> getPartnersList() {
return partnersList;
}
public void setPartnersList(List<PartnerData> partnersList) {
this.partnersList = partnersList;
}
}
This is PartnerData.java
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
public class PartnerData implements Serializable {
private long id = 0;
private String name = "";
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
}
I'm new to PrimeFaces tried out an example in PrimeFaces datatable
public class Datatable {
private String fname;
private String lname;
private int age;
public Datatable(String fname, String lname, int age) {
// TODO Auto-generated constructor stub
}
public String getFname() {
return fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getLname() {
return lname;
}
public void setLname(String lname) {
this.lname = lname;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
Here in the class I have declared what are the fields in the data table
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
#ManagedBean(name="solodat")
#RequestScoped
public class Solodata implements Serializable{
private static final long serialVersionUID = 1L;
public Solodata() {}
private List<Datatable>addeta;
public List<Datatable> getAddeta() {
return addeta;
}
public void setAddeta(List<Datatable> addeta) {
this.addeta = addeta;
}
#PostConstruct
public void init() {
List<Datatable> addeta=new ArrayList<Datatable>();
addeta.add( new Datatable("man","eater",14));
addeta.add( new Datatable("solo","world",28));
addeta.add( new Datatable("antan","evanious",20));
addeta.add( new Datatable("hi","daa",29));
addeta.add( new Datatable("thallu","vandi",30));
addeta.add( new Datatable("prime","faces",1000));
addeta.add( new Datatable("crime","shit",1412));
addeta.add( new Datatable("shit","head",18));
}
}
Here in list I have get that values:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://www.java.com/jsf/html"
xmlns:f="http://www.java.com/jsf/core"
xmlns:p="http://www.primefaces.org/ui">
<h:head>
<title>DATA TABLES DEMO</title>
</h:head>
<h:body>
<h:form>
<h1>output values</h1>
<p:dataTable var="sol" value="#{solodat.addeta}" >
<p:column headerText="LASTNAME">
<h:outputText value="#{sol.lname}"/>
</p:column>
<p:column headerText="age">
<h:outputText value="#{sol.age}"/>
</p:column>
<p:column headerText="first">
<h:outputText value="#{sol.fname}"/>
</p:column>
</p:dataTable>
</h:form>
</h:body>
</html>
This is the xhtml page to get the bean values by data table but JSF is showing an empty page. Any help would be appreciated.
Try this and let us know (using CDI, removing the useless constructor, and initializing addeta properly)
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.inject.Named;
import javax.enterprise.context.RequestScoped;
#Named("solodat")
#RequestScoped
public class Solodata {
private List<Datatable> addeta;
public List<Datatable> getAddeta() {
return addeta;
}
public void setAddeta(List<Datatable> addeta) {
this.addeta = addeta;
}
#PostConstruct
public void init() {
addeta=new ArrayList<Datatable>();
addeta.add( new Datatable("man","eater",14));
addeta.add( new Datatable("solo","world",28));
addeta.add( new Datatable("antan","evanious",20));
addeta.add( new Datatable("hi","daa",29));
addeta.add( new Datatable("thallu","vandi",30));
addeta.add( new Datatable("prime","faces",1000));
addeta.add( new Datatable("crime","shit",1412));
addeta.add( new Datatable("shit","head",18));
}
}
And replace the facelet with this one (I changed the first lines)
<!DOCTYPE html>
<html lang="en"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>DATA TABLES DEMO</title>
</h:head>
<h:body>
<h:form>
<h1>output values</h1>
<p:dataTable var="sol" value="#{solodat.addeta}" >
<p:column headerText="LASTNAME">
<h:outputText value="#{sol.lname}"/>
</p:column>
<p:column headerText="age">
<h:outputText value="#{sol.age}"/>
</p:column>
<p:column headerText="first">
<h:outputText value="#{sol.fname}"/>
</p:column>
</p:dataTable>
</h:form>
</h:body>
</html>
Now make sure you have placed Primefaces library at the right place, and that the app is being deployed on a running server without errors.
Edit: The reason you don't have data , is due to Datatable's constructor, which is incomplete.
Replace
public Datatable(String fname, String lname, int age) {
// TODO Auto-generated constructor stub
}
by
public Datatable(String fname, String lname, int age) {
this.fname = fname;
this.lname = lname;
this.age = age;
}
Small mistake: You are initializing a new local variable in init().
List<Datatable> addeta = new ArrayList<Datatable>();
Change it to:
this.addeta = new ArrayList<Datatable>();
You should use <!DOCTYPE html> instead of
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
and also change your are initializing as noone answer.
See also : Wrong doctype when one is specified in composite view
it's my first question on the site :) But first, sorry for my bad english, i'm learning :)
Plz, i need your help. I'm blocked with an application in JSF.
I have this
<?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core">
<body>
<ui:composition template="./defaultTemplate.xhtml">
<ui:define name="content">
<h1 style="margin-bottom: 0px">#{msg.default_2}</h1>
<br/>
<ul style="padding-left: 0px">
<ui:repeat value="#{categoryMB.categories}" var="categorie">
<h:outputLabel value=" -==- " style="color: #FF8620; font-size: 10px; padding-left: 0px"></h:outputLabel>
<h:form>
<h:commandLink value="#{categorie.categoryname}" action="#{categoryMB.getItemsByCat(categorie.categoryid.id)}"/>
</h:form>
</ui:repeat>
</ul>
<ui:repeat value="#{categoryMB.listItems}" var="item">
<div class="itemCategory">
<h:graphicImage class="item-image" url="#{item.urlimage}"/>
<h:outputLabel value="#{item.price} €" class="prix"></h:outputLabel>
<br/>
<h2><h:outputLabel value="#{item.name}"></h:outputLabel></h2>
<br/>
<h:form>
<h:commandLink value="#{msg.default_14}" action="#{itemMB.linkItem(item.id)}"
></h:commandLink>
</h:form>
</div>
</ui:repeat>
</ui:define>
</ui:composition>
</body> </html>
Everything is good, except the second commandLink !
I can't execute the action. I always return on the same page...
I tried everything i could and i read all subjects about that on the site but i can't find a solution. Please, i'm asking you, help me. I'm going to be crazy.
My bean for categoryMB :
package managedBean;
import entityBean.Item;
import entityBean.Translatecategory;
import java.util.List;
import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.view.ViewScoped;
import sessionBean.ItemFacadeLocal;
import sessionBean.TranslatecategoryFacadeLocal;
/**
*
* #author Aurélien
*/
#ManagedBean
#ViewScoped
public class CategoryMB {
#EJB
private ItemFacadeLocal itemFacade;
#EJB
private TranslatecategoryFacadeLocal translatecategoryFacade;
#ManagedProperty("#{internationalizationMB}")
private InternationalizationMB language;
private List<Item> listItems;
/**
* Creates a new instance of CategoryMB
*/
public CategoryMB() {
}
public List<Translatecategory> getCategories () {
return translatecategoryFacade.findByLanguage(language.getLocale().getLanguage());
}
public void getItemsByCat (int idCat) {
setListItems(itemFacade.findByCat(idCat));
}
public InternationalizationMB getLanguage() {
return language;
}
public void setLanguage(InternationalizationMB language) {
this.language = language;
}
public List<Item> getListItems() {
return listItems;
}
public void setListItems(List<Item> listItems) {
this.listItems = listItems;
}
}
And my bean for itemMB :
package managedBean;
import javax.enterprise.context.SessionScoped;
import java.io.Serializable;
import javax.faces.bean.ManagedBean;
#ManagedBean
#SessionScoped
public class ItemMB implements Serializable {
private int idItem;
/**
* Creates a new instance of ItemMB
*/
public ItemMB() {
}
public int getIdItem() {
return idItem;
}
public void setIdItem(int idItem) {
this.idItem = idItem;
}
public String linkItem(int id)
{
setIdItem(id);
return "item";
}
}
You're mixing CDI #SessionScoped with JSF 2.x #SessionScoped. This is noted in your imports:
import javax.enterprise.context.SessionScoped;
#ManagedBean
#SessionScoped
public class ItemMB implements Serializable {
//...
}
This makes your managed bean to have the default scope, which in JSF 2 is #RequestScoped, so your managed bean will be re created on every request.
Fix your import to:
import javax.faces.bean.SessionScoped;
If you happen to use JSF 2.2.x, start working everything with CDI 1.1. Use #Named for your managed beans and use javax.faces.view.ViewScoped for #ViewScoped.
More info:
What's new in JSF 2.2. CDI compatible #ViewScoped
I've set-up a system which allows you to view categories of IT-equipment and their subcategories.
Now I want to be able to add a subcategory to a parentcategory via JPA.
The problem is that my entity is persisted correctly, but it does not show up in the dataTable. I need to start a new session to make it visible.
This is my xhtml-page:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>Kategorie Tester</title>
<h:outputStylesheet library="css" name="tables.css"/>
<f:metadata>
<f:event type="preRenderView" listener="#{kategorieController.beforeRenderLoadKat}"/>
</f:metadata>
</h:head>
<h:body>
<h:form>
<h:dataTable value="#{kategorieController.reload()}"
var="kat"
styleClass="katview">
<h:column>
<f:facet name="header">
Kategorie
</f:facet>
<h:outputText value="#{kat.titel}"/>
</h:column>
<h:column>
<f:facet name="header">
Unterkategorie
</f:facet>
<h:selectManyCheckbox layout="pageDirection">
<f:selectItems value="#{kat.unterkategorieList}"
var="sub"
itemLabel="#{sub.titel}"
itemValue="#{sub.idunterkategorie}"/>
</h:selectManyCheckbox>
</h:column>
</h:dataTable>
<h:panelGroup>
<h:inputText value="#{kategorieController.titel}"/>
<h:selectOneMenu value="#{kategorieController.kategorie.idkategorie}">
<f:selectItems id="kategorie" value="#{kategorieController.allKats}"
var="kati"
itemLabel="#{kati.titel}"
itemValue="#{kati.idkategorie}"/>
</h:selectOneMenu>
<h:commandButton value="Add" action="#{kategorieController.addSub()}"/>
</h:panelGroup>
</h:form>
</h:body>
</html>
And these are my controllers in order to persist and relaod the data:
KategorieController:
package controller;
import java.io.Serializable;
import java.util.List;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.event.ComponentSystemEvent;
import javax.inject.Inject;
import model.Kategorie;
import model.Unterkategorie;
#ManagedBean
#SessionScoped
public class KategorieController implements Serializable {
#Inject
private KategorieService katService;
private List<Kategorie> allKats;
// Hinzufügen
private Unterkategorie subkategorie;
private Kategorie kategorie;
private String titel;
public void beforeRenderLoadKat(final ComponentSystemEvent event) {
if (allKats != null) {
allKats.clear();
}
allKats = katService.getAll();
subkategorie = new Unterkategorie();
kategorie = new Kategorie();
}
public void addSub() {
subkategorie.setKategorieId(kategorie);
subkategorie.setTitel(titel);
katService.addSub(this.subkategorie);
}
// GETTERS AND SETTERS
}
KategorieService:
package controller;
import java.io.Serializable;
import java.util.List;
import javax.ejb.Stateless;
import javax.ejb.TransactionAttribute;
import javax.ejb.TransactionAttributeType;
import javax.inject.Inject;
import model.Kategorie;
import model.Unterkategorie;
#Stateless
#TransactionAttribute(TransactionAttributeType.REQUIRED)
public class KategorieService implements Serializable {
#Inject
private KategorieFacade katFacade;
public List<Kategorie> getAll() {
return katFacade.getAll();
}
public List<Kategorie> addSub(final Unterkategorie sub) {
return katFacade.addSub(sub);
}
}
KategorieFacade:
package controller;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import model.Kategorie;
import model.Unterkategorie;
public class KategorieFacade {
#PersistenceContext
private EntityManager em;
public List<Kategorie> getAll() {
TypedQuery<Kategorie> query = em.createNamedQuery("Kategorie.findAll", Kategorie.class);
return query.getResultList();
}
public List<Kategorie> addSub(final Unterkategorie sub) {
em.persist(sub);
em.flush();
return getAll();
}
}
Any help is appreciated!
Thank you in advance!
Why don't you try to refresh the collection in the addSub() method:
public void addSub() {
subkategorie.setKategorieId(kategorie);
subkategorie.setTitel(titel);
allKats.clear();
allKats.addAll(katService.addSub(this.subkategorie));
}
And completely unrelated to the original question: you're interchanging the concepts Service and Facade with each other.
But I would suggest that instead of putting the getAll() into addSub(), make it void and do another call from the client to the service after doing the insertion.