Getting Primefaces datatable row variable via non-ajax button post request - ajax

Question

I have a datatable and polling in my Primefaces page. On Datatable on every row there is a commanButton. Because of polling, f:setPropertyActionListener does not works properly on button click. So I set ajax=false at button and trying to get datatable row "var" via a POST request. Is there a way to do that?
<p:poll interval="15"
listener="#{batchOperation.generateImportFTDBatchFileReport}"
update=":batchOperationsForm:growl :batchOperationsForm:batchfilestbl
:batchOperationsForm:dataimporttypeselectiontabview:importFTDbatchfilestbl
:batchOperationsForm:dataimporttypeselectiontabview:importFTDerrorbatchfilestbl
:batchOperationsForm:dataimporttypeselectiontabview:importFTDStatusTxtId"
widgetVar="myPoll" autoStart="true"/>
<p:dataTable id="batchfilestbl" var="batchFile"
value="#{batchOperation.batchFileModel}" paginator="true"
rows="#{batchOperation.batchFileModel.pageSize}"
paginatorPosition="bottom"
sortBy="#{batchOperation.createTime}"
sortOrder="descending"
emptyMessage="#{messages['common.datatable.emptymessage']}"
selectionMode="single"
selection="#{batchOperation.selectedFile}">
<p:column headerText="#{messages['content.batchoperations.datatable.header']}">
<p:commandButton actionListener="#{batchOperation.createBatchFileForDownloadLatestRevision}"
id="excelCreate" disabled="#{disableExcelVar}"
value="#{messages['content.batchoperations.createexcel.button.label']}"
ajax="false">
<f:setPropertyActionListener value="#{batchFile}"
target="#{batchOperation.selectedFile}" />
</p:commandButton>
</p:column>
</p:dataTable>

Answer 1

If you want to send the whole model object as a parameter to a backing bean method, you can send it in using your var for the data table.
<p:dataTable var="myVar">
<p:column>
<p:commandButton actionListener="#{bean.method(myVar)}" />
</p:column>
</p:dataTable>
Alternatively, if you are only interested in the row index, you can send just that using the rowIndexVar value for the data table.
<p:dataTable rowIndexVar="rowIndex">
<p:column>
<p:commandButton actionListener="#{bean.method(rowIndex)}" />
</p:column>
</p:dataTable>
It looks like you are trying to do file download here. You may want to checkout this question.

Answer 2

Instead of using f:setPropertyActionListener, f:attribute solved my problem.
<p:commandButton actionListener="#{batchOperation.createBatchFileForDownloadLatestRevision}"
id="excelCreate" disabled="#{disableExcelVar}"
value="#{messages['content.batchoperations.createexcel.button.label']}"
ajax="false">
<f:attribute name="bf" value="#{batchFile}" />
</p:commandButton>
Method:
public synchronized void createBatchFileForDownloadLatestRevision(ActionEvent event) throws Exception {
selectedFile = (BatchFile) ((CommandButton) event.getSource()).getAttributes().get("bf");
.
.
}