ORA00932 inconsistent datatypes For member methods in SQLJ Object called from SQLPlus

Question

Hi, I would very much appreciate advice on the following problem, its a tricky one, here are the full details....
A) EXECUTIVE SUMMARY....
I have created an oracle object type by wrapping a SQLData java object with the Oracle Create type statement. I am using Oracle 9i on NT4. However despite following the very few Oracle examples I could find, I get the following error....
select value(aaa).testint() from dealsobjtab aaa
ORA-00932: inconsistent datatypes
select value(aaa).testme() from dealsobjtab aaa
ORA-00932: inconsistent datatypesHere is what I've done...
1) Create Java object using SQLData interface (see listing below)
2) Load the Java source to Oracle 9i
3) Run the Oracle Create Type statement to wrap the java class
4) Use the objects in a table and successfully insert rows and query attributes using SQLPlus
5) Find I can't pull back data from any instance methods without getting an "inconsistant datatypes" error for both string and int datatypes. (see below for queries and output from SQLPlus)
B) STEP BY STEP DETAILS FOLLOW......
1) Java Source (in file \dealcalcs\Dealtest.java)
package dealcalcs;
import java.sql.SQLException;
import oracle.jdbc.OracleConnection;
import oracle.jdbc.OracleTypes;
import java.sql.*;
public class Dealtest implements SQLData
public static final String SQLNAME = "SWITCHBLADE_DATA.DEALTEST";
public static final int SQLTYPECODE = OracleTypes.STRUCT;
protected java.math.BigDecimal m_dealid;
protected java.sql.Timestamp m_startdate;
protected String m_dealtype;
protected Double m_facevalue;
/* constructor */
public Dealtest() { }
public void readSQL(SQLInput stream, String type)
throws SQLException
setDealid(stream.readBigDecimal());
setStartdate(stream.readTimestamp());
setDealtype(stream.readString());
setFacevalue(new Double(stream.readDouble()));
if (stream.wasNull()) setFacevalue(null);
public void writeSQL(SQLOutput stream)
throws SQLException
stream.writeBigDecimal(getDealid());
stream.writeTimestamp(getStartdate());
stream.writeString(getDealtype());
if (getFacevalue() == null)
stream.writeBigDecimal(null);
else
stream.writeDouble(getFacevalue().doubleValue());
public String getSQLTypeName() throws SQLException
return SQLNAME;
/* accessor methods */
public java.math.BigDecimal getDealid() { return m_dealid; }
public void setDealid(java.math.BigDecimal dealid) { m_dealid = dealid; }
public java.sql.Timestamp getStartdate() { return m_startdate; }
public void setStartdate(java.sql.Timestamp startdate) { m_startdate = startdate; }
public String getDealtype() { return m_dealtype; }
public void setDealtype(String dealtype) { m_dealtype = dealtype; }
public Double getFacevalue() { return m_facevalue; }
public void setFacevalue(Double facevalue) { m_facevalue = facevalue; }
//These last two are the member methods I call
public String testme(){
String tmp = new String("testme worked");
return tmp;
public int testint(){
int tmp = 0;
tmp = 88;
return tmp;
2, 3, 4) Here is how I wrap the uploaded SQLJ object, create a table using it, and put a row in it....
create or replace type deal_t as object
     external name 'dealcalcs.Dealtest'
LANGUAGE JAVA USING SQLData (
DEALID NUMBER (11) external name 'dealid',
STARTDATE DATE external name 'startdate',
DEALTYPE VARCHAR2 (50) external name 'dealtype',
FACEVALUE FLOAT (49) external name 'facevalue',
MEMBER FUNCTION testme RETURN VARCHAR2
     EXTERNAL NAME 'testme() return java.lang.String',
MEMBER FUNCTION testint RETURN NUMBER
     EXTERNAL NAME 'testint() return int'
) not final
create table dealsobjtab of deal_t;
insert into dealsobjtab values ( deal_t(1, to_date('1/jan/1968'), 'NZD/NZD', 500))
COMMIT
5) Here I select attributes from the object table, and select using the two member methods, note that my member methods fail miserably, and advice on fixing this would be much appreciated....
select * from dealsobjtab aaa
DEALID STARTDATE DEALTYPE FACEVALUE
1 01/01/1968 NZD/NZD 500
1 row selected
select value(aaa).dealid from dealsobjtab aaa
VALUE(AAA).DEALID
1
1 row selected
select value(aaa).testint() from dealsobjtab aaa
ORA-00932: inconsistent datatypes
select value(aaa).testme() from dealsobjtab aaa
ORA-00932: inconsistent datatypes
Phew, that was a long email, I hope you are still awake after all that. I have no idea how to solve this, and would really appreciate some advice to get me going.
Yours Sincerely,
Michael Cato

Answer 1

But, i am receiving the error i have mentioned. is it depends on the java version also?
Please suggest..