Evaluates the expression and returns the resulting value. If this method is not implemented, either #iter(QueryContext) or #item(QueryContext, InputInfo) must be implemented instead. @param qc query context @return value @throws QueryException query exception
(QueryContext qc)
| 75 | * @throws QueryException query exception |
| 76 | */ |
| 77 | public abstract Value value(QueryContext qc) throws QueryException; |
| 78 | |
| 79 | /** |
| 80 | * Evaluates the expression and returns the resulting item, |