Using VARRAYs as parameters to a Stored Procedure

Question

I'm trying to pass a VARRAY as an IN/OUT parameter into a simple stored procedure by doing the following ..
call.addNamedInOutputArgument(.., .., .., oracle.sql.ARRAY.class);
I'm using a DataReadQuery. I set the call in the query, bind all parameters and add the IN/OUT argument to the query (i.e. query.addArgument(<name>)). Then I create an oracle.sql.ArrayDescriptor to describe the ARRAY.
ArrayDescriptor ad = ArrayDescriptor.createDescriptor(<name of VARRAY>, <connection>);
The VARRAY is of size 1 whose type is INTEGER. I create an ARRAY of Integer objects.
Integer fields[1] = new Integer[1];
fields[0] = new Integer(2);
ARRAY a = new ARRAY(ad, <connection>, fields);
I create a Vector of parameters and add the ARRAY to it. Then I execute the query ..
Object result = session.executeQuery(<query>, <Vector>);
When I execute the query I keep getting an ORA-06550: wrong number or types of arguments in call to <stored procedure>. Any help would be appreciated. Thanks. -Michael-

Answer 1

The workaround above using JDBC directly to call store procedures using VARRAY types is still probably your best solution.
In TopLink 10.1.3 there is a new API on StoredProcedureCall that allows passing the JDBC type code which should allow binding of VARRAY output parameters.
addNamedInOutputArgument(String procedureParameterName, String inArgumentFieldName, String outArgumentFieldName, int type, String typeName) {