Bind problem for varchar2 of object type??

Question

Hello all,
I am trying out binding Oracle Object types to java object types using the SQLData interface.
I created a simple object type called employee with the syntax
create type employee as object (empName varchar2(50),empNo number(9));
I then created a class called EmplyoeeObj which implements the interface. The code for the readSQL and
writeSQL methods are below:
public void readSQL(SQLInput stream, String typeName) throws SQLException {
empName = stream.readString();
empNo = stream.readInt();
public void writeSQL(SQLOutput stream) throws SQLException {
stream.writeString(empName);
stream.writeInt(empNo);
empName is a String and empNo is an int. The code that does the calling is:
String query = "{call test_employee(?)}";
Map map = connection.getTypeMap();
map.put("CISWEB.EMPLOYEE",
Class.forName("test.jdbc.EmployeeObj"));
/*Set back the type map with the new mappings*/
connection.setTypeMap(map);
/*Create a statement to make the call */
ocs = (OracleCallableStatement)connection.prepareCall(query);
ocs.registerOutParameter(1,
OracleTypes.STRUCT,
"CISWEB.EMPLOYEE");
boolean isWorked = ocs.execute();
System.out.println("Execute finished........");
Object outParam = ocs.getObject(1);
System.out.println("Object was obtained........" + outParam);
System.out.println("name:" + ((EmployeeObj)outParam).getName());
As can be seen I have created a stored procedure which has one out parameter. All
this preocedure does is assign an Employee object to the out parameter with a name of
'Alex' and an employee number of 9.
The code runs and all but I get this strange result. In the print I am getting the employee number
coming out correctly but the employee name comes out as 3 question marks. I can't understand why
"Alex" does not out. I have tried different things such as adding a new varchar2 to the object type and new a new integer and what I observer is that I keep getting 3 question marks coming back instead of whatever I assign for the employee name. Could someone please help and let me know what could be wrong?
I have no clue as what is causing this weird behaviour.
Thanks.

Answer 1

Hi,
i have not really a idea. But at the next step i would
try the same procedure with in/out parameter and use a
initialized string. Maybe there is a problem to
determine the length of string.
Bye ThomasThanks for you reply Thomas,
This is the code for stored procedure that I use. As can be seen I just assign an employee to the
out parameter.
CREATE OR REPLACE PROCEDURE test_employee(emp out EMPLOYEE) IS
BEGIN
     emp := EMPLOYEE('Alex',49);
END;
Now in the java code when the statement >>
System.out.println("name:" + ((EmployeeObj)outParam).getName());
executes I get the name coming out as the String: "???". That is three question marks. It is very weird. I then attempted to create the object using JPublisher and I get the same result. I attempted not only to use hte SQLData interface but Oracle's ORAData interfaces as well. I went to to create a table with column as the EMPLOYEE type and use in insert to put the same object and and then sellect * from the table to the the and I still get the 3 question marks for the name and the number comes out correctly.
I am not sure what could be causing the text to come out as three question marks. I am using Oracle 9.2.0.4.0 and the ojdbc_g.jar drivers version :9.2.0.3.0. Any help would be greatly appreciated.
Thanks