Hello i am Using PrimeFaces 4.0 and i need to pass object value in SelectOneMenu.
I am using converter to convert that from string format to Class object format.
These are the code files please help me...
lablevalue.xhtml
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://xmlns.jcp.org/jsf/core">
<h:head>
</h:head>
<h:body>
<h:form id="myform">
<p:growl showDetail="true"></p:growl>
<p:selectOneMenu value="#{itemlableAcction.idCard}" >
<f:converter converterId="converter.SelectMenUConverter" />
<f:selectItem itemLabel="Select" itemValue="" />
<f:selectItems value="#{itemlableAcction.idCards}" var="idv" itemLabel="#{idv.name}" itemValue="#{idv}" />
</p:selectOneMenu>
<h:commandButton action="#{itemlableAcction.onclickSubmit}" value="Submit"></h:commandButton>
</h:form>
</h:body>
</html>
ItemlableAcction
import java.util.ArrayList;
import java.util.List;
import javax.faces.bean.ManagedBean;
import bo.IdCard;
#ManagedBean
public class ItemlableAcction {
List<IdCard> idCards = new ArrayList<IdCard>();
IdCard idCard;
public Object getIdCard() {
return idCard;
}
public void setIdCard(IdCard idCard) {
this.idCard = idCard;
}
public List<IdCard> getIdCards() {
return idCards;
}
public void setIdCards(List<IdCard> idCards) {
this.idCards = idCards;
}
public ItemlableAcction() {
IdCard card1 = new IdCard();
card1.setId(1);
card1.setName("ABC");
card1.setAddress("USA");
idCards.add(card1);
IdCard card2 = new IdCard();
card2.setId(2);
card2.setName("MNO");
card2.setAddress("INDIA");
idCards.add(card2);
IdCard card3 = new IdCard();
card3.setId(3);
card3.setName("XYZ");
card3.setAddress("Chaina");
idCards.add(card3);
}
public String onclickSubmit() {
IdCard ic = (IdCard) idCard;
System.out.println("In action id values are " + ic.getId() + " " + ic.getAddress());
return "";
}
}
SelectMenUConverter
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.FacesConverter;
import bo.IdCard;
#FacesConverter("converter.SelectMenUConverter")
public class SelectMenUConverter implements Converter {
public SelectMenUConverter() {
System.out.println("Inside converter");
}
public Object getAsObject(FacesContext arg0, UIComponent arg1, String arg2) {
System.out.println("One" + arg2);
IdCard idCard = new IdCard(arg2);
return idCard;
}
public String getAsString(FacesContext arg0, UIComponent arg1, Object value) {
System.out.println("Two" + value);
return value.toString();
}
}
Idcard
public class IdCard {
String name;
int id;
String address;
public IdCard() {
}
public IdCard(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
Imagine you have to implement converter for 100 classes.
If you don't want to implement a own Converter and get the data from exiting list, use:
SelectItems Converter Omnifaces
You have a complete example.
PD: Don't forget to implement toString with a unique id.(See documentation)
You're not searching and getting the required instance from the defined list (in your managed-bean) when getting its identifiant through getAsObject()'s method. You're just instanciating an additional new object through the converter. Try this:
#FacesConverter("converter.SelectMenUConverter")
public class SelectMenUConverter implements Converter {
...
#Override
public Object getAsObject(FacesContext arg0, UIComponent arg1, String arg2) {
if (arg2 == null || arg2.isEmpty()) {return null;}
try {
return findIdCard(arg2); // here's where should be retreived the desired selected instance
} catch (NumberFormatException e) {
throw new ConverterException(new FacesMessage(("This is not a valid card id")), e);
}
}
...
public IdCard findIdCard(String id) {
Iterator<IdCard> iterator = idCards.iterator(); // "idCards" represents your idCards' list. It is not recognized yet in the converter
while(iterator.hasNext()) {
IdCard idc = iterator.next();
if(idc.getId() == Integer.valueOf(id).intValue()) {
return idc;
}
}
return null;
}
Related
This question already has answers here:
Identifying and solving javax.el.PropertyNotFoundException: Target Unreachable
(18 answers)
Closed 7 years ago.
I got this error below when I was running my JSF page.
javax.el.PropertyNotFoundException: Target Unreachable, 'null' returned null..
Warning: /createStaff.xhtml #33,125
value="#{staffBean.staff.firstName}": Target Unreachable, 'null'
returned null javax.el.PropertyNotFoundException: /createStaff.xhtml
#33,125 value="#{staffBean.staff.firstName}": Target Unreachable,
'null' returned null
I don't get why I will run into the error when I use value="#{staffBean.staff.firstName}". There is no problem when I use the value="#{staffBean.userName}" and value="#{staffBean.passWord}" above.
This is my createStaff.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:f="http://xmlns.jcp.org/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head>
<title>Create Staff</title>
</h:head>
<h:body>
<f:view>
<h:form>
<p:panel id ="panel" header="Staff Creation">
<p:messages id="msgs" />
<h:panelGrid columns="3" columnClasses="label, value">
<h:outputText value="Username: *" />
<p:inputText id="username" value="#{staffBean.userName}" required="true" label="Username">
</p:inputText>
<p:message for="username" />
<h:outputLabel for="pwd1" value="Password 1: *" />
<p:password id="pwd1" value="#{staffBean.passWord}" match="pwd2" label="Password 1" required="true" feedback="true" />
<p:message for="pwd1" />
<h:outputLabel for="pwd2" value="Password 2: *" />
<p:password id="pwd2" value="#{staffBean.passWord}" label="Password 2" required="true" feedback="true" />
<p:message for="pwd2" />
<h:outputText value="First name: *" />
<p:inputText id="firstname" value="#{staffBean.staff.firstName}" required="true" label="Username">
</p:inputText>
<p:message for="firstname" />
<h:outputText value="Last name: *" />
<p:inputText id="lastname" value="#{staffBean.staff.lastName}" required="true" label="Username">
</p:inputText>
<p:message for="lastname" />
<h:outputText value="Last name: *" />
<p:selectOneRadio id="genderconsole" value="#{staffBean.staff.gender}" required="true">
<f:selectItem itemLabel="Male" itemValue="Male" />
<f:selectItem itemLabel="Female" itemValue="Female" />
</p:selectOneRadio>
<p:message for="genderconsole" />
<p:commandButton value="Create Staff"
id="ajax"
update="panel">
</p:commandButton>
</h:panelGrid>
</p:panel>
</h:form>
</f:view>
</h:body>
</html>
This is my StaffBean.java
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package managedbean;
import entities.Staff;
import java.io.IOException;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
import javax.ejb.EJB;
import javax.enterprise.context.SessionScoped;
import javax.faces.FacesException;
import javax.faces.application.FacesMessage;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.view.ViewScoped;
import javax.inject.Named;
import sessionBean.staffSessionBeanLocal;
#Named(value = "staffBean")
#SessionScoped
//#ViewScoped
public class StaffBean implements Serializable {
#EJB
private staffSessionBeanLocal staffSession;
private String userName;
private String passWord;
private String loginStatus;
private Staff staff;
...........
////Code removed
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassWord() {
return passWord;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
public String getLoginStatus() {
return loginStatus;
}
public void setLoginStatus(String loginStatus) {
this.loginStatus = loginStatus;
}
public Staff getStaff() {
return staff;
}
public void setStaff(Staff staff) {
this.staff = staff;
}
}
This is my staff entity.
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package entities;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
#Entity
public class Staff extends User implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String imageURL;
#ManyToMany(cascade = {CascadeType.ALL}, fetch = FetchType.EAGER)
private List<Roles> roles = new ArrayList<Roles>();
#Override
public Long getId() {
return id;
}
#Override
public void setId(Long id) {
this.id = id;
}
#Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
#Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof Staff)) {
return false;
}
Staff other = (Staff) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
return false;
}
return true;
}
#Override
public String toString() {
return "entities.Staff[ id=" + id + " ]";
}
public String getImageURL() {
return imageURL;
}
public void setImageURL(String imageURL) {
this.imageURL = imageURL;
}
public List<Roles> getRoles() {
return roles;
}
public void setRoles(List<Roles> roles) {
this.roles = roles;
}
}
This is my User class which Staff class extends from.
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package entities;
import java.io.Serializable;
import java.sql.Timestamp;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
#MappedSuperclass
public class User implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String password;
private Timestamp joinDate;
private String userType;
private String gender;
private String email;
private String contactNo;
private String firstName;
private String lastName;
private Timestamp dOB;
private String address;
private String accountStatus;
private int numOfFailLogin;
private String maritalStatus;
private String activationCode;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
#Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
#Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof User)) {
return false;
}
User other = (User) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
return false;
}
return true;
}
#Override
public String toString() {
return "entities.User[ id=" + id + " ]";
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Timestamp getJoinDate() {
return joinDate;
}
public void setJoinDate(Timestamp joinDate) {
this.joinDate = joinDate;
}
public String getUserType() {
return userType;
}
public void setUserType(String userType) {
this.userType = userType;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getContactNo() {
return contactNo;
}
public void setContactNo(String contactNo) {
this.contactNo = contactNo;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public Timestamp getdOB() {
return dOB;
}
public void setdOB(Timestamp dOB) {
this.dOB = dOB;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getAccountStatus() {
return accountStatus;
}
public void setAccountStatus(String accountStatus) {
this.accountStatus = accountStatus;
}
public String getMaritalStatus() {
return maritalStatus;
}
public void setMaritalStatus(String maritalStatus) {
this.maritalStatus = maritalStatus;
}
public int getNumOfFailLogin() {
return numOfFailLogin;
}
public void setNumOfFailLogin(int numOfFailLogin) {
this.numOfFailLogin = numOfFailLogin;
}
public String getActivationCode() {
return activationCode;
}
public void setActivationCode(String activationCode) {
this.activationCode = activationCode;
}
}
You have no property firstName in your entity staff
UPDATE:
Looks like your staffobject is null add:
#PostConstruct
public void init() {
staff = new Stuff();
}
The error suggests that when the "firstName" is being accessed, it cannot be reached. So the "Staff" has not been constructed yet.
Add a method to your managed bean, this will resolve the issue.
#PostConstruct
public void init() {
staff= new Staff ();
}
For better understanding of why you should do it that way and not
Staff staff = new Staff();
JSF - what is the difference between #PostConstruct and direct method call from constructor?
this is my xhtml page
<h:form id="order_search" prependId="flase">
<p:growl id="growl" showDetail="true" autoUpdate="true"
sticky="false" />
<h:panelGrid columns="5" style="margin-bottom:10px" cellpadding="5">
<p:outputLabel value="Customer Name : " for="ac_order" />
<p:autoComplete id="ac_order" value="#{orderSearchController.orderFromAutoC}"
completeMethod="#{orderSearchController.autoCompleteOrder}" var="order"
itemLabel="#{order.customerName}" itemValue="#{order}"
converter="#{orderConverter}" forceSelection="true" />
<p:commandButton id="selected" value="print" action="#{orderSearchController.printOrder}" />
</h:panelGrid>
</h:form>
and this is my backing bean
#Component
#ManagedBean
#ViewScoped
public class OrderSearchController implements Serializable{
private static final long serialVersionUID = 1L;
#ManagedProperty(value = "#{orderService}")
public OrderService orderService;
public List<Order> allOrders;
public List<Order> acFilterdOrders;
public Order orderFromAutoC;
#PostConstruct
public void Init() {
System.out.println("init gets called");
// allOrders = new ArrayList<>();
// orderFromAutoC = new Order();
allOrders = orderService.getAllOrders();
System.out.println("After sssssss ");
}
public List<Order> autoCompleteOrder(String query) {
acFilterdOrders = new ArrayList<Order>();
for (int i = 0; i < allOrders.size(); i++) {
if (allOrders.get(i).getCustomerName().toLowerCase().startsWith(query)) {
acFilterdOrders.add(allOrders.get(i));
}
}
return acFilterdOrders;
}
public String printOrder() {
System.out.println("Inside print");
System.out.println("Inside print : "+orderFromAutoC);
return null;
}
//Getters and Setters
}
and this is my converter code
#ManagedBean(name = "orderConverter")
#RequestScoped
public class OrderConverter implements Converter {
#ManagedProperty(value = "#{orderService}")
private OrderService orderService;
#Override
public Object getAsObject(FacesContext arg0, UIComponent arg1, String value) {
if (value != null && value.trim().length() > 0) {
return orderService.getOrderById(Integer.parseInt(value));
} else {
return null;
}
}
#Override
public String getAsString(FacesContext arg0, UIComponent arg1, Object arg2) {
// TODO Auto-generated method stub
return null;
}
public OrderService getOrderService() {
return orderService;
}
public void setOrderService(OrderService orderService) {
this.orderService = orderService;
}
}
the auto-complete component works fine but but when i tried to get the selected value from it in the backing bean it always return a null
The getAsString method is not implemented correctly as it is just returning the NULL value. The return value of getAsString method is passed as value in the getAsObject method based on which it get the value from the list. Here is an example for your reference . Value in the getAsObject method is the Id that is returned from getAsString method.
#Override
public Object getAsObject(FacesContext fc, UIComponent uic, String value) {
if(value != null && value.trim().length() > 0) {
MessageLogBean messageLogBean = (MessageLogBean) SessionUtility.getManagedBean("messageLogBean");
DeviceResponseDTO deviceResponseDTO = new DeviceResponseDTO();
deviceResponseDTO.setId(Integer.parseInt(value));
List<DeviceResponseDTO> deviceResponseDTOs = messageLogBean.getDeviceResponseDTOs();
int index = deviceResponseDTOs.indexOf(deviceResponseDTO);
if(null != deviceResponseDTOs && !deviceResponseDTOs.isEmpty()){
return deviceResponseDTOs.get(index);
}
return null;
}
else {
return null;
}
}
#Override
public String getAsString(FacesContext fc, UIComponent uic, Object object) {
if(object != null) {
return String.valueOf(((DeviceResponseDTO) object).getId());
}
else {
return null;
}
}
I am currently implementing a orderable list using PrimeFaces' component, embedded inside a . I was able to get the list to appear properly with my items. However, when I saved the list and submitted it back to the server, the rearranged items did not get reflected in the backing bean for some reason. Since the Primefaces showcase was able to see the changes, what am I doing wrong?
XHTML Snippet:
<h:form id="confirmDialogForm">
<p:confirmDialog id="arrangeProjDialog" widgetVar="arrangeDlg" width="600"
header="Meeting Order"
appendToBody="true" message="Drag and drop to rearrange meeting order">
<p:orderList id="arrangeProjDialogList"
value="#{adminMeetingListBean.orderProjList}"
converter="#{adminMeetingListBean.rowConverter}"
var="po"
controlsLocation="left"
styleClass="wideList"
itemLabel="#{po.projectTitle}"
itemValue="#{po}"
>
<f:facet name="caption">Proposals</f:facet>
</p:orderList>
<p:commandButton value="Save" ajax="true" process="arrangeProjDialogList #this"
actionListener="#{adminMeetingListBean.updateProposalMeetingOrder}" onclick="arrangeDlg.hide();">
</p:commandButton>
<p:button value="Cancel" onclick="arrangeDlg.hide(); return false;" />
</p:confirmDialog>
</h:form>
Backing Bean:
public void updateProposalMeetingOrder() {
if (selectedMeeting != null) {
orderProjTitles.get(0);
meetingService.updateMeetingProjSequence(orderProjList, selectedMeeting.getMeetingId());
}
}
The List is a list of POJO "ProposalOrderRow" objects. This has the definition:
public class ProposalOrderRow implements Serializable {
private static final long serialVersionUID = -5012155654584965160L;
private int dispSeq;
private int appId;
private int assignmentId;
private String refNo;
private String projectTitle;
public int getDispSeq() {
return dispSeq;
}
public void setDispSeq(int dispSeq) {
this.dispSeq = dispSeq;
}
public int getAppId() {
return appId;
}
public void setAppId(int appId) {
this.appId = appId;
}
public String getRefNo() {
return refNo;
}
public void setRefNo(String refNo) {
this.refNo = refNo;
}
public String getProjectTitle() {
return projectTitle;
}
public void setProjectTitle(String projectTitle) {
this.projectTitle = projectTitle;
}
public int getAssignmentId() {
return assignmentId;
}
public void setAssignmentId(int assignmentId) {
this.assignmentId = assignmentId;
}
}
Converter:
#FacesConverter("proposalOrderRowConverter")
public class ProposalOrderRowConverter implements Converter {
private List<ProposalOrderRow> orderRows;
#Override
public Object getAsObject(FacesContext context, UIComponent component, String newValue) {
if (newValue.isEmpty()) {
return null;
}
for (ProposalOrderRow item : orderRows) {
String refNo = item.getRefNo();
if (refNo.equals(newValue)) {
return item;
}
}
return null;
}
#Override
public String getAsString(FacesContext context, UIComponent component, Object value) {
if (value == null) {
return "";
}
ProposalOrderRow row = (ProposalOrderRow) value;
String output = row.getRefNo();
return output;
}
public List<ProposalOrderRow> getOrderRows() {
return orderRows;
}
public void setOrderRows(List<ProposalOrderRow> orderRows) {
this.orderRows = orderRows;
}
}
This problem is caused by appendToBody="true" in the confirm dialog. Setting it to false solved the problem.
See link here: link
I'm using Primefaces and spinner component. My problem is that the spinner value is not set in the bean, if it's inside an iteration structure. My spinner is inside ui:repeat.
In the end, the problem is how to deal with different form controls mapping to the same property in bean.
<h:form>
<ui:repeat var="item" value="#{myBean.items}">
<p:spinner size="2" min="1" max="50" style="width:75px" value="#{cartBean.quantityToOrder}"/>
<p:commandButton value="Add to cart" action="#{cartBean.saveItemToCart(item)}" ajax="false"/>
</ui:repeat>
</h:form>
and my bean
#ManagedBean
#SessionScoped
public class CartBean extends BaseBean {
private int quantityToOrder;
//setter, getter...
//When called quantityToOrder = 0 always
public void saveItemToOrder(Item item) {
quantityToOrder IS 0.
}
}
I suspect it has to do with form submission, I have tried a form enclosing all elements in the collection and also a form enclosing any of the spinners + button. The generated client IDs are distinct for all spinners.
Any help would be appreciated.
Put a System.out.println("quantity: " + quantityToOrder) on your setQuantityToOrder(int quantityToOrder) method and will will see the problem. The value of the last spinner will prevail over the others because all the spinners are pointed to the same property (cartBean.quantityToOrder).
Try moving the quantityToOrder to the Item as follows:
<h:form id="mainForm">
<ui:repeat value="#{cartBean.items}" var="item">
<p:outputLabel value="#{item.name}: " for="sp" />
<p:spinner id="sp" size="2" min="1" max="50" style="width:75px" value="#{item.quantityToOrder}" />
<p:commandButton value="Add to cart" action="#{cartBean.saveItemToOrder(item)}" process="#this, sp" update=":mainForm:total" />
<br />
</ui:repeat>
Total: <h:outputText id="total" value="#{cartBean.quantityToOrder}" />
</h:form>
The cartBean:
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.SessionScoped;
#ManagedBean
#SessionScoped
public class CartBean implements Serializable {
private List<CartItem> items;
private int quantityToOrder;
#PostConstruct
public void setup() {
items = new ArrayList<CartItem>();
items.add(new CartItem(1, "A"));
items.add(new CartItem(2, "B"));
items.add(new CartItem(3, "C"));
}
public void saveItemToOrder(CartItem item) {
//do whatever you want to do with the item quantity.
System.out.println("Qtd of " + item.getName() + ": " + item.getQuantityToOrder());
//to calculte the qtd of items on the cart.
quantityToOrder = 0;
for (CartItem cartItem : items) {
quantityToOrder += cartItem.getQuantityToOrder();
}
}
public List<CartItem> getItems() {
return items;
}
public void setItems(List<CartItem> items) {
this.items = items;
}
public int getQuantityToOrder() {
return quantityToOrder;
}
public void setQuantityToOrder(int quantityToOrder) {
this.quantityToOrder = quantityToOrder;
}
}
The CartItem:
import java.io.Serializable;
public class CartItem implements Serializable {
private Integer id;
private Integer quantityToOrder;
private String name;
public CartItem(Integer id, String name) {
this.id = id;
this.name = name;
quantityToOrder = 0;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getQuantityToOrder() {
return quantityToOrder;
}
public void setQuantityToOrder(Integer quantityToOrder) {
this.quantityToOrder = quantityToOrder;
}
#Override
public int hashCode() {
int hash = 7;
hash = 67 * hash + (this.id != null ? this.id.hashCode() : 0);
return hash;
}
#Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final CartItem other = (CartItem) obj;
if (this.id != other.id && (this.id == null || !this.id.equals(other.id))) {
return false;
}
return true;
}
}
I have tried to implement the autocomplete feature in primefaces but suggestions do not show up in my textbox. Can someone show me what I'm missing. theses are codes
udateCategory.xhtml
<p:panel header="Type in Category to Edit" >
<p:outputLabel value="Category Name"/>
<p:autoComplete value="#{categoryBean.selectedCategory}"
completeMethod="#{categoryBean.completeCategory}"
var="cat"
itemLabel="#{cat.categoryName}"
itemValue="#{cat}"
converter="#{catConverter}"
forceSelection="true"/>
<p:commandButton value="Update" action="#{category.saveCategory}"/>
</p:panel>
CategoryBean
public class CategoryBean implements Serializable{
private Category selectedCategory;
/**
* Creates a new instance of CategoryBean
*/
public CategoryBean() {
}
public List<Category> completeCategory (String query){
CategoryManager manager = new CategoryManager();//an instance of the manager
List<Category> suggestions = new ArrayList<>();//an instance of list
List<Category> allCategory = new ArrayList<>(); //populate the allCategory with data fro db
allCategory = manager.getAllCategory();
//checck to see if data exist in allCategory
if(!allCategory.isEmpty()){
System.out.println("kobla : allcategory has data");
}
else
{
System.out.println("kobla: no data in alcategory");
}
for(Category cat : allCategory){
if(cat.getCategoryName().startsWith(query)){
suggestions.add(cat);
}
}
//check to see if data exists in sugestions
if (!suggestions.isEmpty()) {
System.out.println("kobla : suggestions has data");
} else {
System.out.println("kobla: no data in suggestions");
}
return suggestions;
}
/**
* #return the selectedCategory
*/
public Category getSelectedCategory() {
return selectedCategory;
}
/**
* #param selectedCategory the selectedCategory to set
*/
public void setSelectedCategory(Category selectedCategory) {
this.selectedCategory = selectedCategory;
}
}
CategoryConverter
public class CategoryConverter implements Converter{
#Override
public Object getAsObject(FacesContext context, UIComponent component, String value) {
if(value.trim().equals("")){
return null;
}
else{
try{
int id = Integer.parseInt(value);
List<Category> myCategory = new ArrayList<>();//
myCategory = new CategoryManager().getAllCategory();//load data fro db
for(Category cat : myCategory){
if(cat.getCategoryID() == id){
return cat;
}
}
}
catch(Exception e){
e.printStackTrace();
}
}
return null;
}
#Override
public String getAsString(FacesContext context, UIComponent component, Object value) {
if(value == null || value ==""){
return null;
}
else
{
return String.valueOf(((Category)value).getCategoryName());
}
// throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
this works for me
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.ViewScoped;
#ManagedBean
#ViewScoped
public class CategoryBean implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private Category selectedCategory;
#PostConstruct
public void init(){
selectedCategory = new Category();
}
public void saveCategory(){
System.out.println("saved "+this.selectedCategory);
}
public List<Category> completeCategory(String query) {
CategoryManager manager = new CategoryManager();// an instance of the
// manager
List<Category> suggestions = new ArrayList<>();// an instance of list
List<Category> allCategory = new ArrayList<>(); // populate the
// allCategory with data
// fro db
allCategory = manager.getAllCategory();
// checck to see if data exist in allCategory
if (!allCategory.isEmpty()) {
System.out.println("kobla : allcategory has data");
} else {
System.out.println("kobla: no data in alcategory");
}
for (Category cat : allCategory) {
if (cat.getCategoryName().startsWith(query)) {
suggestions.add(cat);
}
}
// check to see if data exists in sugestions
if (!suggestions.isEmpty()) {
System.out.println("kobla : suggestions has data");
} else {
System.out.println("kobla: no data in suggestions");
}
return suggestions;
}
/**
* #return the selectedCategory
*/
public Category getSelectedCategory() {
return selectedCategory;
}
/**
* #param selectedCategory
* the selectedCategory to set
*/
public void setSelectedCategory(Category selectedCategory) {
this.selectedCategory = selectedCategory;
}
}
and
import java.io.Serializable;
public class Category implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private int categoryID;
private String categoryName;
public int getCategoryID() {
return categoryID;
}
public void setCategoryID(int categoryID) {
this.categoryID = categoryID;
}
public String getCategoryName() {
return categoryName;
}
public void setCategoryName(String categoryName) {
this.categoryName = categoryName;
}
public Category(int categoryID, String categoryName) {
super();
this.categoryID = categoryID;
this.categoryName = categoryName;
}
public Category() {
super();
}
#Override
public String toString() {
return "Category [categoryID=" + categoryID + ", categoryName="
+ categoryName + "]";
}
}
and
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
#ManagedBean
#RequestScoped
public class CategoryConverter implements Converter, Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
#Override
public Object getAsObject(FacesContext context, UIComponent component, String value) {
if(value.trim().equals("")){
return null;
}
else{
try{
int id = Integer.parseInt(value);
List<Category> myCategory = new ArrayList<>();//
myCategory = new CategoryManager().getAllCategory();//load data fro db
for(Category cat : myCategory){
if(cat.getCategoryID() == id){
return cat;
}
}
}
catch(Exception e){
e.printStackTrace();
}
}
return null;
}
#Override
public String getAsString(FacesContext context, UIComponent component, Object value) {
if(value == null || value ==""){
return null;
}
else
{
return String.valueOf(((Category)value).getCategoryName());
}
// throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
and
<!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://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head></h:head>
<h:body>
<h:form>
<p:outputLabel value="Category Name" />
<p:autoComplete
value="#{categoryBean.selectedCategory}"
completeMethod="#{categoryBean.completeCategory}"
var="cat"
itemLabel="#{cat.categoryName}"
itemValue="#{cat}"
converter="#{categoryConverter}"
forceSelection="true" />
<p:commandButton value="Update" action="#{categoryBean.saveCategory}" />
</h:form>
</h:body>
</html>