no transition executed from h:dataTable link

[cmon]

Hi all

i'm using the h:dataTable tag to render a dataModel. For each row i have a link that should execute a transition to a detail state (which is defined as a subflow). Now that doesn't quite work. The transition is never executed, the same view is rendered again.

my flow definition is

	<var name="searchForm" class="org.starthello.web.data.forms.SearchForm" />
	<var name="meetings" class="org.starthello.web.data.SearchResults" />
	<var name="meeting" class="org.starthello.web.data.model.Meeting" />
	
	<view-state id="searchMeeting" view="searchCriteria.xhtml" >
		<transition on="search" to="browseMeetings" >
		</transition>
	</view-state>
	
	<view-state id="browseMeetings" view="browseMeetings.xhtml" >
		<on-render>
			<evaluate expression="meetingService.find(flowScope.searchForm)" result="meetings" result-type="dataModel"/>
			
		</on-render>
		<transition on="seeMeeting" to="sfMeetingDetail">
			<set name="flowScope.meetingId" value="meetings.selectedRow" />
		</transition>
		
		<transition on="refineSearch" to="searchMeeting" />
		
	</view-state>
	
	<subflow-state id="sfMeetingDetail" subflow="meetingDetail" >
		<input name="flowScope.meetingId" required="true"/>
		<transition on="exit" to="browseMeetings">
		</transition>
		<transition on="abort" to="home" />
	</subflow-state>

and my xhtml looks like

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
	    		xmlns:ui="http://java.sun.com/jsf/facelets"
	  			xmlns:h="http://java.sun.com/jsf/html"
	  			xmlns:f="http://java.sun.com/jsf/core"
                xmlns:sf="http://www.springframework.org/tags/faces"
				template="/WEB-INF/layouts/default.xhtml">

<ui:define name="content">

<h:form id="meetingsForm" >
	<div class="section">
		<h2>Suchergebnisse</h2>
		<p>
			<sf:commandLink value="Suche anpassen" action="refineSearch"/>
		</p>
		<ui:fragment id="searchResultsFragment">
			<div id="searchResults">
				<h:outputText id="meetingError" value="Meetings nicht geladen" rendered="#{meetings == null}"/>
				<h:outputText id="noMeetingsText" value="Keine Meetings gefunden!" rendered="#{meetings.rowCount == 0}"/>
				<h:dataTable id="meetingsDataTable" styleClass="summary" value="#{meetings}" var="m">
					<h:column>
						<f:facet name="header">Datum</f:facet>
						#{m.meetingDate}
					</h:column>
					<h:column>
						<f:facet name="header">Tags</f:facet>
						#{m.tags}
					</h:column>
							<h:column>
						<f:facet name="header">Tageszeit</f:facet>
						#{m.daytime}
					</h:column>
					<h:column >
						<f:facet name="header">Mehr...</f:facet>

						<sf:commandLink id="seeMeetingLink" value="Detail" action="seeMeeting" />
					</h:column>
				</h:dataTable>
			</div>
		</ui:fragment>
	</div>
</h:form>
</ui:define>
</ui:composition>

now my first quetion is:
why can't i load the dataModel used for the dataTable tag in the previous transition? data is only displayed when i load it in the <on-render> action of the current state. why is that?
and my second question is:
why is no transition executed and the same view is rendered again?

any help is very appreciated!

cheers, simon

[cmon]

btw it doesn't help to change the sf:commandLink to h:commandLink...

[Marten Deinum]

You can load it in the previous state as long as you put it in a scope that is also available to the next state (i.e. flow or conversation).

Regarding your event, my guess is that there isn't a row selected hence the assignment fails and the screen rerenders. Enable debug logging and check thelogging.