[jboss-user] [JBoss Seam] - Master/Detail Problem

[gzoller]

Hello,

I am having trouble with a Master/Detail relationship between Project/Expense.  I have a Project screen containing a list of expenses (<h:dataTable>) and a computed total expense (@Formula field in Project ).

* After adding a new expense I'm redirected back to Project.xhtml but my computed total expense value is wrong...its the old value--until I manually reload the page using the browser.

* Deleting an Expense always works great for some reason--calculated totals updated and display w/o crashing.

* If I edit an expense and redirect back to Project.xhtml sometimes the computed total value is correctly shown and other times I get a Hibernate exception like this:


  | 15:52:17,327 ERROR [AbstractFlushingEventListener] Could not synchronize database state with session
  | org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [com.paragon.spurs.model.Capex#11]
  | 	at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1699)
  | (clip)
  | 

I'm not sure if these are two issues are part of the same problem or not. 

Do I need to invalidate objects in Project.xhtml when I redirect back so the read fresh from the db? (If so, how can I do that?)

Am I handling conversation scope right?  

>From Project.xhtml (initiate edit and create new Expense)

  | <s:button view="/CapexEdit.xhtml" 
  |     id="capex" 
  |     value="Edit"
  |     propagation="none">
  |         <f:param name="projectProjectId" value="#{projectHome.instance.projectId}"/>
  |         <f:param name="capexCapexId" value="#{capex.capexId}"/>
  |         <f:param name="capexFrom" value="Project.xhtml"/>
  | </s:button>
  | 
  | <!-- SNIP! -->
  | 
  | <s:button view="/CapexEdit.xhtml" 
  |     value="Add Capex"  
  |     propagation="begin">
  |         <f:param name="projectProjectId" value="#{projectHome.instance.projectId}"/>
  |         <f:param name="capexFrom" value="Project.xhtml"/>
  |         <f:param name="capexCapexId"/>
  | </s:button>
  | 

Lots more code--Let me know if it would help to see something in particular.

Thanks for any hints--getting a bit warped after several days not being able to get anywhere with this.
Greg

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