2 Replies Latest reply on Jul 29, 2011 12:47 AM by himanshu.bhardwaj

value attribute is getting called twice when using extendedDataTable

himanshu.bhardwaj May 25, 2011 11:42 AM

Hi All,

Am trying to implement extendedDataTable but facing the issue that the value attribute is getting invoked twice, because of which the table data is getting duplicated. I am not able to figure whether I am doing it wrong or am I mssing anything.

Thanks

<code>

This is my javacode which is invoked:

public List<TestBean> getListBean() {

TestBean t1 = new TestBean();

t1.setId(1);

t1.setAge(10);

t1.setName("XXX");

TestBean t2 = new TestBean();

t2.setId(2);

t2.setAge(14);

t2.setName("YYY");

TestBean t3 = new TestBean();

t3.setId(3);

t3.setAge(15);

t3.setName("ZZZ");

listBean.add(t1);

listBean.add(t2);

listBean.add(t3);

return listBean;

}

/**

* @return the listAllBean

public List<TestBean> getListAllBean() {

System.out.println("Query here will call the database code");

return getListBean();

}

This is my jsp:

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>

<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>

<ui:composition xmlns="http://www.w3.org/1999/xhtml"

xmlns:ui="http://java.sun.com/jsf/facelets"

xmlns:a4j="http://richfaces.org/a4j"

xmlns:rich="http://richfaces.org/rich">

</ui:composition>

<html>

<f:view>

<h:form>

<%--<rich:datascroller for="testList" maxPages="100"/>--%>

<rich:spacer height="20" />

<rich:extendedDataTable id="testList" value="#{testGroupBean.listAllBean}" var="item">

<rich:column>

<f:facet name="header">

<h:outputText value="age" />

</f:facet>

<h:outputText value="#{item.age}" />

</rich:column>

<rich:column>

<f:facet name="header">

<h:outputText value="Name" />

</f:facet>

<h:outputText value="#{item.name}" />

</rich:column>

</rich:extendedDataTable>

</h:form>

</f:view>

</html>

</code>

1. Re: value attribute is getting called twice when using extendedDataTable

himanshu.bhardwaj May 26, 2011 3:10 AM (in response to himanshu.bhardwaj)

Hi All,

I got the problem. The problem is basically the approach am following. Am retreiving the list in the getter method. But if I go through the life cycle of a JSF. Then in all there are 6 phases and as per the requirements the different phases access the getters and setters. So each time I do some processing mutiple time getters and setters are called causing the data to be duplicated.

This solves the issue of duplicacy, but I still need to find a way to populate the data.

If anyone has any idea let know.

Will keep posted on the new findings.

Thanks
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2. Re: value attribute is getting called twice when using extendedDataTable

himanshu.bhardwaj Jul 29, 2011 12:47 AM (in response to himanshu.bhardwaj)

I managed it, by implementing a custom pagination control and using constructors for initializations of list. Moreover I managed the refreshing of list data by implementing listeners and using a4j:support. Works perfectly fine now. The only problem I see is that even if the list data is dynamically loaded still I have to make the scope session for it, I am still trying to understand the reason for this.
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