Selecting Item from primefaces datatable not working

Question

I am using primefaces data table to display a list of data. I want my users to be able to select multiple rows after which an operation will be executed on the data represented by the selected rows. Everything works well up untill the operation is executed where i discover that the selection could not be resolved.

Below is my xhtml page







        


      





        
            
         
       

        

          
        #{contact.groupName}  
          
          
        #{contact.numberofentries}

and Below is my backing bean

@Named
@ViewAccessScoped
public class ExcelFileController implements Serializable, IFileController {

/**
 * 
 */
private static final long serialVersionUID = -8117258104485487921L;

@Inject
PhoneNumberFormatter formatter;

@Inject
@Authenticated
UserProfile profile;

public PhoneNumberFormatter getFormatter() {
    return formatter;
}

public void setFormatter(PhoneNumberFormatter formatter) {
    this.formatter = formatter;
}

@EJB
BulkContactDeleter deleter;

@Inject
Logger logger;

@Inject
@CurrentContext
FacesContext context;

@Inject
BulkSMSContactListProducer listProducer;

@Inject
ConfigurationListProducer producer;

private BulkSMSContacts[] contactsSelected;

private List contacts;

public BulkSMSContacts[] getContactsSelected() {
    return contactsSelected;
}

public void setContactsSelected(BulkSMSContacts[] contactsSelected) {
    this.contactsSelected = contactsSelected;
}

/*
 * public BulkContactDataModel getContactDataModel() { return
 * contactDataModel; }
 */

@PostConstruct
public void init() {
    logger.log(Level.INFO, "Entering excel file controller");
    /*
     * contactDataModel = new BulkContactDataModel(
     * listProducer.getBulkSMSContacts());
     */
    this.contacts = listProducer.getBulkSMSContacts();

}

@Override
public String removeContact() {
    int contactsdeleted = 0;

    if (this.contacts != null) {
        /*
         * for (BulkSMSContacts contacts : contactsSelected) { if (contacts
         * != null) { deleter.deleteContact(contacts); contactsdeleted += 1;
         * }
         */
        for (BulkSMSContacts c : contacts) {
            if (c.isSelected()) {

                deleter.deleteContact(c);
                contactsdeleted += 1;
            }

        }
        contacts = listProducer.getBulkSMSContacts();

        logger.log(Level.INFO, "Deleted " + contactsdeleted + " Contacts");
        context.addMessage(null, new FacesMessage(
                FacesMessage.SEVERITY_INFO, "Success", contactsdeleted
                        + " entries where deleted successfully"));
    } else {
        context.addMessage(null, new FacesMessage(
                FacesMessage.SEVERITY_ERROR, "Error",
                "No contact file was selected!"));
    }
    return null;
}

public List getContacts() {
    return contacts;
}

public void setContacts(List contacts) {
    this.contacts = contacts;
}

}

Below is my model definition

@Entity
public class BulkSMSContacts implements Serializable {

private static final long serialVersionUID = -6444763251149211384L;

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@XmlAttribute
private long contactId;

@XmlElement
@NotNull(message = "message.validator.notnull")
@Size(min = 9, max = Integer.MAX_VALUE, message = "message.validator.size")
@Column(nullable = false, length = Integer.MAX_VALUE, unique = false)
@Basic(fetch = FetchType.EAGER)
private String contacts;

@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "Id", nullable = false)
@XmlElement(type = SMSAccount.class)
private SMSAccount account;

@NotNull(message = "message.validator.notnull")
@Size(min = 2, max = 100, message = "message.validator.size")
@Column(length = 100, nullable = false, unique = false)
@XmlElement
private String groupName;

@Column(nullable = true)
private int numberofentries = 0;

@javax.persistence.Transient
private boolean selected;

//getters and setters

The problem is that when the delete button is clicked(albeit when the removeContact() method is called. All the rows evaluate to none being selected.

I have also tried using the primefaces showcase approach but still the sample problem.

Please am I doing something wrong??

user1761501 · Accepted Answer

I don't see why you set a selection attribute within an entity class. Try to do it this way

set a data Model :

public class BulkSMSContactsDataModel extends ListDataModel implements SelectableDataModel {    

public BulkSMSContactsDataModel() {  
}  

public BulkSMSContactsDataModel(List data) {  
    super(data);  
}  

@Override  
public BulkSMSContacts getRowData(String rowKey) {         
   List contacts = (List) new yourDao.getListOfBulkSMSContacts(); //yourDAO :BulkSMSContactsSelector i guess
    for(BulkSMSContacts c : contacts) {  
        if(String.valueOf(c.getContactId()).equals(rowKey))  
            return c;  
    }  

    return null;  
}  

@Override  
public Object getRowKey(BulkSMSContacts obj) {  
    return String.valueOf(obj.getContactId());  
}

}

configure your bean :

public class ExcelFileController implements Serializable, IFileController {
    private BulkSMSContacts[] contactsSelected;
    private List contacts;
    private BulkSMSContacts[] selectedcontacts;
    private BulkSMSContactsDataModel contactsList;
        public ExcelFileController() {
        contactsList = new BulkSMSContactsDataModel(contacts);
    }
    // getters and setters
    // the rest of your code

}

configure your xhtml


      
        
        #{contact.groupName}  
        
        
        #{contact.numberofentries}

Update your UI.
use p instead of primefaces-p it will make it easier to read your Code. :)

Selecting Item from primefaces datatable not working

Answers (2)

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