Get value of a randomly generated jsf Table - jsf

Question

I am new to this , i am using primefaces and generating a dynamic table, this datatable gets its vaules from a list created by a managed bean.
I need to set the property of another managed bean with the value of the column generated by the datatable.
Eg: Col1, has a particular value, i want to click on that value and a dialog box should appear displaying that col1 value
<p:dataTable id="dataTable" var="c" value="#{databaseSearch.customerList}"
paginator="true" rows="10" paginatorAlwaysVisible="false"
paginatorTemplate="Page {CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} Rows per page {RowsPerPageDropdown}"
rowsPerPageTemplate="5,10,15,30">
<p:column>
<f:facet name="header">
<h:outputText value="Machine" />
</f:facet>
<p:commandButton id="xxx" value="#{c.machine}" action="#{updateEntry.setMachine(c.machine)}" ajax="true" onclick="dlg1.show();" styleClass="ui-Machinebutton"/>
<!-- styleClass="ui-Machinebutton" -->
</p:column>
The managed bean 'updateEntry' has getter and setter methods.
Bean
#ManagedBean
#SessionScoped
public class UpdateEntry implements Serializable {
public Long Machine;
public Long getMachine() {
return Machine;
}
public void setMachine(Long Machine) {
this.Machine = Machine;
}
}
Dialog Box
<p:dialog id="modalDialog" header="Modal Dialog" widgetVar="dlg1" modal="true" height="100" dynamic="True">
<h:outputText value="#{updateEntry.machine}" />
</p:dialog>
I do understand that in order to pass a parameter to the dialog box i would need the help of a managed bean. However, the datatable is generated randomly and i am not able to pass that particular random value. So how do i pass the random value of a command button and set the managed bean when it is clicked ?
Objective
When the command button is clicked, i want its value to be passed to a managed bean, since this is randomly generated dataTable, i am not sure how i can achieve that.
Update
It Works ! The same code updates updateEntry.machine but the problem is since clicking on the button opens the dialog box first before the updateEntry.machine is updated to a new value, the dialog box displays the previously clicked option. Does the 'Action' happen before the 'Onclick' ? or is it the other way around ? I need to update the bean first and then open the dialog box for it to show the newer value. I have tried both True & False of the dynamic property of the dialog box, not sure what is that for.
Also i need to refresh the page to get the new value loaded in dialog box, else no matter which command button i click it shows me the value of the command button i first clicked, post the page refresh, it shows the value of the command button last clicked.

Answer 1

u can declare a new object for updateEntry inside your current class, c
then in your action button, call a method in c to change updateEntry machine value such as:
<p:commandButton id="xxx" value="#{c.machine}" action="#{c.change()}" ajax="true" onclick="dlg1.show();" styleClass="ui-Machinebutton"/>
while in c class
private void change(){
//set updateEntry.machine value here
}
so your dialog box should look like
<p:dialog id="modalDialog" header="Modal Dialog" widgetVar="dlg1" modal="true" height="100" dynamic="False">
<h:outputText value="#{c.updateEntry.machine}" />
</p:dialog>

Answer 2

I found the problem ...
I changed the code to below and it worked !
<p:commandButton id="basic" value="#{c.machine}" action="#{updateEntry.setMachine(c.machine)}" ajax="true" oncomplete="dlg1.show();" styleClass="ui-Machinebutton"/>
The trick here was to first set the 'Machine' variable and upon completion load the dialog box which reads back the same 'Machine' variable