rich:extendedDataTable does not deliver the selected object
I have the following extendeddatatable.
I click on the button --> <a4j:commandLink value="#{msg['documentPopup.docDownload']}" (see below)
It sends sometimes the correct object (the selected object) to backend. Sometimes it sends a null object
Actually I expect if I click on´the button, it should read the right object.
Where is the problem??
<rich:extendedDataTable id="documentTable"
value="#{documentPopup.documentList}" var="document"
rowClasses="whiteRow, titaniumRow"
selection="#{documentPopup.selection}" selectionMode="single"
style="table-layout:fixed;height: 150px; width: 640px;">
<a4j:ajax render="inputGrid"
listener="#{documentPopup.tableRowSelect}" event="selectionchange" />
<rich:column id="docName"
sortBy="#{document.name}"
sortOrder="#{documentPopup.documentNameOrder}"
filterValue="#{documentPopup.documentNameFilter}"
filterExpression="#{fn:containsIgnoreCase(document.name, documentPopup.documentNameFilter)}">
<f:facet name="header">
<a4j:commandLink value="#{msg['documentPopup.name']}"
render="documentTable"
action="#{documentPopup.sortByDocumentName}" />
<h:inputText value="#{documentPopup.documentNameFilter}" styleClass="SelectorTextBox80px">
<a4j:ajax event="keyup"
render="documentTable@body" execute="@this" />
</h:inputText>
</f:facet>
<h:outputText value="#{document.name}" />
</rich:column>
....
<rich:column id="docAction">
<f:facet name="header">
<h:outputText value="#{msg['documentPopup.docAction']}" />
</f:facet>
<a4j:commandLink value="#{msg['documentPopup.docDelete']}"
action="#{documentPopup.doDocumentDelete}" render="documentTable inputGrid" />
<a4j:commandLink value="#{msg['documentPopup.docUpdate']}"
action="#{documentPopup.doDocumentUpdate}" render="documentTable inputGrid" />
<a4j:commandLink value="#{msg['documentPopup.docDownload']}"
action="#{documentPopup.doDocumentDownload}" />
</rich:column>
</rich:extendedDataTable>
The Mangedbean looks like (related part):
public void doDocumentDownload() {
System.out.println("selectedDocument:" + selectedDocument); ---------------------------------------->
System.out.println("selectedDocument.getId()" + selectedDocument.getId()); ----------------------------->sometimes correct sometime 0
final byte[] docData = documentFacade.readDocument(selectedDocument.getId());
openPDF(selectedDocument.getName(), docData);
}