Purpose:
DXCombinedQueryOptDL is a concrete subclass of DXQueryBase, that represents and executes a combination of text, image, and parametric queries. The difference between DXCombinedQuery and DXCombinedQueryOptDL, is DXCombinedQueryOptDL is sending parametric query information to DB2 or some other database directly. Combined queries provide multiple-search capability on the specified datastore by coordinating the execution of their sub-queries. The final result is an intersection between the given scopes and all of its sub-query results.
Methods:
execute([VARIANT parms]);
Executes the query. The optional parameter is in the form of an array of DXNVPairDL objects that are used to hold the various types of query objects used in the query.
long status();
VARIANT result();
Gets the result collection. The value of the VARIANT is DXResultsDL object.
long numberOfResults();
LPDISPATCH resultSetCursor();
Gets the result set cursor. The returned LPDISPATCH pointer contains a DXResultSetCursorDL object.
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