Nested primefaces datatable not submitting values properly for innermost datatable - jsf

Question

I have two levels of nested datatables in the form of
<p:dataTable id="necesidades"
value="#{registrarAccionDosBean.accionDos.necesidadesConTema}"
rendered="#{not empty registrarAccionDosBean.accionDos.necesidadesConTema}"
var="necesidad"
rowKey="#{necesidad.idNecesidad}">
<p:column style="width:16px">
<p:rowToggler />
</p:column>
<p:rowExpansion>
<h:panelGroup id="grupoTema">
<h:panelGroup id="edicion" rendered="#{necesidad.tema.idTema ne null}">
<p:row>
<p:column >
<h:outputLabel value="#{etiq.lbl_comunes_requerido} #{etiq.etiqueta_checkbox_transparenciasFocalizadas}" styleClass="textoAcciones"/>
</p:column>
<p:column >
<!-- Nested data table -->
<p:dataTable id="transparenciasInplace"
var="transparencias"
value="#{registrarAccionDosBean.transparenciasFocalizadas}"
selection="#{necesidad.tema.transparenciasFocalizadas}"
rowKey="#{transparencias.idTf}">
<f:facet name="header">
Objetives
</f:facet>
<p:column selectionMode="multiple" style="width:16px;text-align:center"/>
<p:column>
<h:outputLabel value="#{transparencias.descripcion}" styleClass="textoAccionesSmall"/>
</p:column>
</p:dataTable>
</p:column>
</p:row>
</h:panelGroup>
</h:panelGroup>
</p:rowExpansion>
</p:dataTable>
I am able to retrieve the information and presented on screen properly, but when I send to submit through a command button, all the information is sending but the values of the innermost datatable(the one which id is "transparenciasInplace") are not sending in the right way, in the backing bean I getting the following information which is incorrect
The way I receive the values in the bean
Subject1 ---ObjetivesE,ObjetiveF
Subject2 ---null
Subject3 ---null
The way that I expect and I see on screen
Subject1 ---ObjetivesA (1 object subject and 1 object Objective)
Subject2 ---ObjectiveB,ObjectiveC,ObjectiveD (1 object subject and 3 objects Objective)
Subject3 ---ObjetivesE,ObjetiveF (1 object subject and 2 objects Objective)
The code of my command button
<p:commandButton process="#form" icon="ui-icon ui-icon-disk" id="btnsave"
value="Save" actionListener="#registrarAccionDosBean.guardar}"
widgetVar="btnguardar"
onclick="setTimeout('btnguardar.disable()', 10);" title="#{etiq.btn_guardar}" update="content"/>
I don't know why in the subject1 I am getting the value of the Subject3 and the values of the Subject2 and Subject3 are setting to null

Answer 1

So basically I need to change my datatable to a p:selectManyCheckbox. That's because in the datatable I can not differentiate my source form my target in this particular case, because when I write
<p:dataTable id="transparenciasInplace"
var="transparencias"
value="#{registrarAccionDosBean.transparenciasFocalizadas}"
selection="#{necesidad.tema.transparenciasFocalizadas}"
rowKey="#{transparencias.idTf}">
.
.
The value that is sending is my source and this is shared between the n rows and I think there was the problem, but if we use something like this
<p:selectManyCheckbox id="transparenciasInplace" value="#{necesidad.tema.transparenciasFocalizadas}" layout="pageDirection" columns="1" converter="transparenciaConverter" style="table-layout: auto;font-weight: bold; text-align: justify;font-size :15px">
<f:selectItems value="#{registrarAccionDosBean.transparenciasFocalizadas}" var="transparenciaC" itemLabel="#{transparenciaC.descripcion}" itemValue="#{transparenciaC}" />
</p:selectManyCheckbox>
I clearly separete my source
<f:selectItems value="#{registrarAccionDosBean.transparenciasFocalizadas}" var="transparenciaC" itemLabel="#{transparenciaC.descripcion}" itemValue="#{transparenciaC}" />
from the target (the value that I want to send)
<p:selectManyCheckbox id="transparenciasInplace" value="#{necesidad.tema.transparenciasFocalizadas}" layout="pageDirection" columns="1" converter="transparenciaConverter" style="table-layout: auto;font-weight: bold; text-align: justify;font-size :15px">