Problem with sending objects to a package function

Question

Hello fellows,
I am working on a project where I need to call a PL/SQL package's function and then work with the result.
The procedure takes a custom object:
CREATE OR REPLACE TYPE DTODOROV.my_object AS OBJECT
  ATTR1 VARCHAR2(255)
)and the result is the same object.
I have the following java code
if(conn.isUsable()){
                System.out.println("Connected!");
                ocs = (OracleCallableStatement) conn.prepareCall("{? = call MYPACK.MF(?)}");
                Object[] args1 = {"Petar"};
                STRUCT ms = new STRUCT(new StructDescriptor("DTODOROV.MY_OBJECT", conn), conn, args1);
                ocs.setObject(2, ms, OracleTypes.STRUCT);
                ocs.registerOutParameter(1, OracleTypes.STRUCT,"DTODOROV.MY_OBJECT");
                ocs.execute();
                Object object = ocs.getObject(1);
                System.out.println(((STRUCT)object).getAttributes()[0]);
            }And this is the body of my package:
CREATE OR REPLACE PACKAGE BODY DTODOROV.myPack AS
  FUNCTION MF(Param1 MY_OBJECT) RETURN MY_OBJECT
is
    myObjIn MY_OBJECT;
    myObjOut MY_OBJECT;
  BEGIN
    myObjIn:=Param1;
    if(myObjIn.ATTR1 <> null) then
    myObjOut:= new MY_OBJECT('Mitko');
    INSERT INTO DEBUG_INFO VALUES (myObjIn.ATTR1||'not empty');
    else
    myObjOut:= new MY_OBJECT('Oktim ');
    INSERT INTO DEBUG_INFO VALUES ('empty');
    end if;
    return myObjOut; 
  END;
END myPack;
/DEBUG_INFO is just a table with one column to check what is happening.
The database is oracle 11g.
JDBC driver is the latest from oracle.
JDK is 1.6
The java is intended to run as a web service on GlassFish (for now, or Tomcat later).
And here is my problem. When I execute the java code the object i send to the procedure is null. What am I doing wrong? Because I get no exceptions or SQL errors. If you could give me some pointers as to how to easily debug such code?
Thanks in advance,
Mitko
Edited by: DiTod on Apr 5, 2011 8:41 AM

Answer 1

if (conn.isUsable()) {
                System.out.println("Connected!");
                ocs = (OracleCallableStatement) conn.prepareCall("{? = call MYPACK.MF(?)}");
                Object[] args1 = {new CHAR("fa",CharacterSet.make(CharacterSet.UTF8_CHARSET))};
                StructDescriptor sd = StructDescriptor.createDescriptor("DTODOROV.MY_OBJECT", conn);
                STRUCT ms = new STRUCT(sd, conn, args1);
                System.out.println(ms.dump());
                ocs.setObject(2, ms, OracleTypes.STRUCT);
                ocs.registerOutParameter(1, OracleTypes.STRUCT,"DTODOROV.MY_OBJECT");
                ocs.execute();
                Object object = ocs.getObject(1);
                System.out.println(((STRUCT)object).getAttributes()[0]);
}I think you mean this. But it is still not working :(
Actually when I dump it I see that it has just one property and that it is from the correct type
>
name = DTODOROV.MY_OBJECT
length = 1
ATTR1 = fa
>
but something happens during the sending and in the database I don't recieve the object or it is null.
Edited by: DiTod on Apr 5, 2011 8:46 AM