protected void evaluateAttributes ( E element , ELContext elContext ) throws JspTagException , IOException { String idStr = nullIfEmpty ( resolveValue ( id , String . class , elContext ) ) ; if ( idStr != null ) element . setId ( idStr ) ; }
Resolves all attributes setting into the created element as appropriate This is only called for captureLevel > = META . Attributes are resolved before the element is added to any parent node . Typically deferred expressions will be evaluated here . Overriding methods must call this implementation .