Binding Parameters in a Query

Question

Hi All,
I figured now that I know more about the actual problem I am having I would post a new message and be a bit more specfic.
I am using TL 4.6 Build 418, Oracle 8.1 & WLS 7.0.
I can not get Toplink to bind my parameters. When I simplify my query to the following:
ReadObjectQuery qry = new ReadObjectQuery(SystemUser.class);
namedQuery0.setEJBQLString("SELECT OBJECT(sysuser) FROM SystemUser sysuser WHERE sysuser.username = ?1");
qry.setShouldBindAllParameters(true) ;
qry.addArgument("username");
Vector theArgs = new Vector() ;
theArgs.addElement("[email protected]") ;
SystemUser su = (SystemUser) clientSession.executeQuery(qry,theArgs) ;
I get the following in the console - TL does not bind my parameters
SELECT PASSWORD, USERNAME, SYSTEMUSERID FROM SYSTEMUSER WHERE (USERNAME = ?)
bind => [null]
HOWEVER - if I build an expression in this way it does work.
ExpressionBuilder emp = new ExpressionBuilder();
Expression myExp = emp.get("username").equal(emp.getParameter("username"));
ReadObjectQuery query = new ReadObjectQuery();
query.setReferenceClass(SystemUser.class);
query.setSelectionCriteria(myExp);
query.addArgument("username");
Vector v = new Vector();
v.addElement("[email protected]");
SystemUser su = (SystemUser) clientSession.executeQuery(query,v);
This Works and I get my object! It is the exact same thing, except it isn not EJBQL. The reason I can not use the latter way of getting my object is that we want to create named queries in the MW and use just them in our Java code instead of building expression in code.
Thanks,
-Jerry

Answer 1

In the EJBQL try addArgument("1", java.lang.String.class); instead of addArgument("username")