How to pass a Java arraylist as a parameter to a StoredProcedureCall

Question

I need to invoke a stored procedurecall which takes in a collection parameter represented as a nested table. I need to pass a java ArrayList object to it. How can I pass this parameter to the stored procedure using StoredProcedureCall class.

Answer 1

Hello,
Check out
Is possible to pass array/list as parameter in TopLink StoredProcedureCall?
for some more information on using VARRAYs in 10.1.3. TopLink 11 has a feature that converts VARRAYs to/from collection types for you. An example using "myProcedure" that has an inout parameter "names" defined as type "NAMELIST_TYPE" would be:
    StoredProcedureCall sqlcall = new StoredProcedureCall();
    sqlcall.setProcedureName("myProcedure");
    sqlcall.addUnamedInOutputArgument("names", "names", Types.ARRAY, "NAMELIST_TYPE", ArrayList.class);
    DataReadQuery query = new DataReadQuery();
    query.addArgument("names");
    query.setCall(sqlcall);
    Vector args = new Vector();
    ArrayList names = new ArrayList();
    names.add("firstname1");
    names.add("firstname2");
    args.add(names);
    //DataReadQuery returns a collection of DatabaseRecords
    results = (Vector)getSession().executeQuery(query, args);
    //getting one record from the list:
    names =((ArrayList)((DatabaseRecord)results.get(0)).get("names"))This is just a simple example. More complex nested types can be done by providing a ObjectRelationalDatabaseField parameter describing the type, but I dont have any examples showing this handy.
Hope this example helps,
Chris