[jboss-user] [JBoss Seam] - Re: Trinidad: Validation still not working

[stephen.friedrich]

Hm, to check for the global version of the JSF implementation they already check for existence of Application.getExpressionFactory()

That still does not answer the question if a particular component class is JSF 1.1 or 1.2. (Is it really possible at all to run a 1.1 component library on a 1.2 implementation?)
Unfortunately UIComponent has default implementations for the new 1.2 methods that try to supply reasonable behaviour, e.g. getValueExpression() instantiates a ValueExpressionValueBindingAdapter.
So one cannot check for methods in the component's class.

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