Forum:

DataTable datas are not actual

Greenhorn

Posts: 6

posted 6 years ago

Hi!

I work on a small project now. This software registers a client who is enter into the office (datetime, name, id, destination). The registration process is OK, but I have problems with reports showed in dataTable.
How the report works:

When I click on report, the browser shows me report about how many clients have each official today(you can see it on the following picture):

When I click on one official, the browser shows me another page with the list of clients visited that official (you can see it on the following pic):

Lets get back to the first report (how many clients have each official today). Of course there is a possibility to change the date range. Lets say that I want to see how many clients have each official from 6 of december to 9 of december. For this I get the following:

Everything is OK till this point, but if I click on one official I get the list of clients visited another official. What I noticed is that when I click on an official I get the client list of another official who was on this position later when I started report (how many clients have each official TODAY). For example if I click on a "Томашев Рожа" I get clients of "Ђенге Терез".

Here is the code of report JSF (how many clients have each official today):
Sumarno.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:ui="http://java.sun.com/jsf/facelets"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:p="http://primefaces.prime.com.tr/ui"
 xmlns:f="http://java.sun.com/jsf/core">

<body>

<ui:composition template="./../template.xhtml">

<ui:define name="content">

<h:panelGrid columns="2" border="0">
 <h:form id="form1" >
 <h:dataTable value="#{destinationManager.getDestinations()}" var="item" >
 <h:column>
 <f:facet name="header">
 <h:outputText value="Sluzbenik"/>
 </f:facet> 
 <h:commandLink styleClass="listName" action="#{destinationManager.setDestination(item[2])}" value="#{item[2]} #{item[0]}" />

</h:column>
 <h:column>

<h:outputText styleClass="listLine" value="#{destinationManager.createLine(item[0],item[1])}"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Broj klienta"/>
 </f:facet> 
 <h:outputText styleClass="listNumber" value="#{item[1]}"/>
 </h:column>

</h:dataTable>

</h:form>

<h:panelGrid columns="2" border="0">
 <h:form id="form2" >

<h:selectBooleanCheckbox label="Kara" value="#{destinationManager.onlyOpstina}" />

<h:outputLabel styleClass="checkbox" value="Bez Katastra, CSR, Sudija i PU " />
 
 <h:outputLabel value="Period od:" />
 <p:calendar value="#{destinationManager.dateFrom}"/>
 
 <h:outputLabel value="Period do:" />
 <p:calendar value="#{destinationManager.dateTo}" />

<p:commandButton ajax="false" value="OK" actionListener="/Izvestaj/Sumarno" 
 update="panel,display" image="ui-icon ui-icon-disk" />

</h:form>
 </h:panelGrid>

</h:panelGrid>

</ui:define>

</ui:composition>

</body>
</html>

Code of client list JSF:
klienti.xhtml

<body>

<ui:composition template="./../template.xhtml">

<ui:define name="content">

<h:dataTable style="height:500px" value="#{destinationManager.getClientList()}" var="item" rowClasses="jsfcrud_odd_row,jsfcrud_even_row" cellpadding="5">
 <h:column>
 <f:facet name="header">
 <h:outputText value="ULAZ"/>
 </f:facet> 
 <h:outputText value="#{item[1]}"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Prezime"/>
 </f:facet> 
 <h:outputText value="#{item[3]}"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Ime"/>
 </f:facet> 
 <h:outputText value="#{item[2]}"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Mesto"/>
 </f:facet> 
 <h:outputText value="#{item[4]}"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Pravac kretanja"/>
 </f:facet> 
 <h:outputText value="------>>>>"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Destinacija"/>
 </f:facet> 
 <h:outputText value="(#{item[6]}) #{item[5]}"/>
 </h:column>

</h:dataTable>

</ui:define>

</ui:composition>

</body>
</html>

Code of managed bean destinationManager:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package managedBeans;

import bean.BeanIN;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.ejb.EJB;
import javax.enterprise.context.RequestScoped;
import javax.faces.bean.ManagedBean;
import model.Destination;

/**
 *
 * @author User
 */
@ManagedBean
@RequestScoped
public class destinationManager {

@EJB
    private BeanIN bean;
    private int maxNumber;
    private boolean onlyOpstina = false;
    private Date dateFrom;
    private Date dateTo;
    private String numberOfClients;
    private String destination;

/** Creates a new instance of destinationManager */
    @PostConstruct
    public void init() {

dateFrom = new Date();
        dateTo = new Date();
        numberOfClients = "10";
        destination = "";

}

public destinationManager() {
    }

public boolean isOnlyOpstina() {
        return onlyOpstina;
    }

public void setOnlyOpstina(boolean onlyOpstina) {
        this.onlyOpstina = onlyOpstina;
    }

public Date getDateFrom() {
        return dateFrom;
    }

public void setDateFrom(Date dateFrom) {
        this.dateFrom = dateFrom;
    }

public Date getDateTo() {
        return dateTo;
    }

public void setDateTo(Date dateTo) {
        this.dateTo = dateTo;
    }

public String getDest() {
        String dest = bean.getDestination("9");

return dest;

//   return "";
    }

public List getDestinations() {

int clients = 0;

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        String from = formatter.format(dateFrom) + " 00:00:00";
        String to = formatter.format(dateTo) + " 23:00:00";
        List clientList = bean.getDestinationList(from, to, onlyOpstina);

return clientList;

}

public String getNumberOfClients() {
        return numberOfClients;
    }

public void setNumberOfClients(String numberOfClients) {
        this.numberOfClients = numberOfClients;
    }

public String setDestination(String dest) {
        destination = dest;
        return "/Izvestaj/klienti";
    }

public String createLine(String title, String lg) {

String line = "";
        int x = 1;
        int clientNumber = Integer.parseInt(lg);

if (maxNumber < clientNumber) {
 maxNumber = clientNumber;
 }
 x = (clientNumber * 100) / maxNumber;

for (int i = 0; i < x; i++) {
 line = line + "-";
 }

if (title.equals("U K U P N O")) {
            line = "";
        }

return line;
    }

public List getClientList() {

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        String from = formatter.format(dateFrom) + " 00:00:00";
        String to = formatter.format(dateTo) + " 23:00:00";

String destination = "";
        if (!this.destination.equals("")) {
            destination = " and destination='" + this.destination + "'";
        }

return bean.getClientList(from, to, destination);

}
}

Brendan Healey

Ranch Hand

Posts: 218

posted 6 years ago

This is a very well described question. I think you need to use f:setPropertyActionListener as a child tag of
the h:commandLink to set a backing bean value (target=) to the value of the table row (source="#{var}").

Karoly Guba

Greenhorn

Posts: 6

posted 6 years ago

Can you please explain how to do this through an example!

Thank You!

Tim Holloway

Bartender

Posts: 19814

I like...

posted 6 years ago

The "value=" of a dataTable should NOT be a method call or reference to a simple collection object. It should reference a backing bean property whose "get" method returns a JSF DataModel object.

The JSF DataModel interface is implemented by several different stock JSF classes, although the one I use most often is the ListDataModel. It wraps a Java List and provides the cursor services needed for JSF to be able to tell which row of the table you are interacting with.

One important thing to know about dataTables and DataModels. A class containing a DataModel has to be of at least View scope (Session scope, if JSF1.x). Request scope won't work, because the original DataModel object is destroyed and re-created, losing the cursor position.

An IDE is no substitute for an Intelligent Developer.

It is sorta covered in the JavaRanch Style Guide.

DataTable datas are not actual

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