Simple EntityQuery with a4j support doesn't work

spoonman Jul 14, 2009 11:08 AM

This is simple example taken from Seam In Action, page 405:

<s:decorate id="scoreField" template="layout/edit.xhtml">
  <ui:define name="label">Total score:</ui:define>
  <h:inputText id="score" value="#{round.totalScore}">
    <a:support event="onblur" reRender="scoreField" ajaxSingle="true"/>
  </h:inputText>
</s:decorate>

This works fine, model gets updated and database changes are commited after every Ajax call as expected.

However, when I want to iterate over a list (EntityQuery#getResultList) I face a problem. I can see that model is updated, but there are no changes in database. When I refresh a page all changes to model are gone. Can someone explain it to me why? Thank you in advance. Here is en example:

<rich:dataGrid value="#{roundList.resultList}" var="round">

  <s:decorate id="scoreField" template="layout/edit.xhtml">
    <ui:define name="label">Total score:</ui:define>
    <h:inputText id="score" value="#{round.totalScore}">
      <a:support event="onblur" reRender="scoreField" ajaxSingle="true"/>
    </h:inputText>
  </s:decorate>

</rich:dataGrid>

1. Re: Simple EntityQuery with a4j support doesn't work

spoonman Jul 16, 2009 2:12 PM (in response to spoonman)

In case some of you have similar problem this was my solution:

There was a faulty annotation @Column(nullable = false, updatable = false) on Round#getTotalScore() so even if JPA tried to update this entity with only this one field changed - it didn't do nothing. Entity was changed, but only this one field has changed, thus no need to update to database since updatable = false was set.
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