XQuery Engine |
Home:XQuery Engine:Product Architecture:Calling Java Functions Calling Java Methods and SQL Functions from DataDirect XQuery®DataDirect XQuery® lets you call Java methods or SQL functions from within a query. Java methods can be used to return system information, to invoke a web service call, or simply to make a function available that is not in the standard XQuery function library. SQL functions can be used to invoke a stored procedure or to make a function available that is not in the XQuery function library. All external functions are namespace qualified, and the namespace that is used tells DataDirect XQuery® whether the external function is written in Java or in SQL. Before calling such a function, it must be declared in the query. |
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