Hi,

I' have custom facelets components in taglib named fc. They can be included in one another.

form .xhtml contains person component with parameter person passed in using the seam component.

<form>
...
<fc:personUI person="#{versionedPerson.person}" />
...
</form>

person component include address component

<ui:composition>
...
<fc:addressUI address="#{person.address}" />
...
</ui:composition>

...and here occurs problem. Validation (of addressUI) ends with: "model validation failed:null" which is caused by IllegalArgumentException. The exception seems to be caused because modelInstance evaluates to null within the validate method in org.jboss.seam.core.Expressions (trying to "bind" #{address} )

When I replace durring dubbug '#{address}' to '#{person.address}' there is no exception thrown.

Validation of personUI is OK, so there is a problem only in "second (deeper) passing" (hope anyone understood what I mean ;) ).

very similar to this topic
http://www.jboss.com/index.html?module=bb&op=viewtopic&t=109799


Any idea to solve it ? Is it a bug ?


Many thanks in advance! ;)