Substitution Group binding.Expression
This simple type allows to declare expressions that interact with the presentation layer:
- get values,
- set values (when submitting a form for instance),
- call methods (to react to application events).
The underlying engine is fully compatible with Java Unified Expression Language (see http://java.sun.com/products/jsp/reference/techart/unifiedEL.html),except that expressions are compiled, and strongly-typed (no weak-type conversion).
Element Textual Content
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Expression. |