Named Queries

Question

Hi All,
I am using TL 4.6 Build 418, Oracle 8.1 & WLS 7.0.
I am having a hard time getting Named Queries working. Specifically I can't seem to get Toplink to Bind my parameter(s). I have tried to use both EJBQL and plain SQL with no luck using either. The error I get when I use SQL is that from Oracle or JDBC that not all parameters are bound, when I change the stmt to be EJBQL then I get a null where the bound parameter should go. The stmt is super simple.
EJBQL = SELECT OBJECT(sysuser) FROM SystemUser sysuser WHERE sysuser.username = ?1
or as
SQL = SELECT * FROM SystemUser WHERE username = ?1
For a test I took the mapping work bench code that is generated into java source and pasted it into a test servlet below.
ReadObjectQuery namedQuery0 = new ReadObjectQuery(com.aravo.security.biz.usermgmt.SystemUser.class);
namedQuery0.setEJBQLString("SELECT OBJECT(sysuser) FROM SystemUser sysuser WHERE sysuser.username = ?1");
namedQuery0.setName("getSystemUserwithUserName");
namedQuery0.setCascadePolicy(1);
namedQuery0.setQueryTimeout(0);
namedQuery0.setShouldUseWrapperPolicy(false);
namedQuery0.setShouldBindAllParameters(true);
namedQuery0.setShouldCacheStatement(false);
namedQuery0.setSessionName("security");
namedQuery0.setShouldMaintainCache(true);
namedQuery0.setShouldRefreshIdentityMapResult(false);
namedQuery0.setLockMode((short)0);
namedQuery0.addArgument("uname", java.lang.String.class);
clientSession.addQuery("getSystemUserwithUserName", namedQuery0);
Vector theArgs = new Vector() ;
theArgs.addElement("[email protected]") ;
SystemUser su = (SystemUser) clientSession.executeQuery("getSystemUserwithUserName",theArgs) ;
What I then see is the following in the console. Any ideas why NULL is there instead of [email protected]?
SELECT PASSWORD, USERNAME, SYSTEMUSERID FROM SYSTEMUSER WHERE (USERNAME = ?)
bind => [null]
Thanks,
Jerry

Answer 1

It looks like you have a small error in your setup.
Is see your EJBQL =
namedQuery0.setEJBQLString("SELECT OBJECT(sysuser) FROM SystemUser sysuser WHERE sysuser.username = ?1");
But then you pass the argument =
namedQuery0.addArgument("uname", java.lang.String.class);
It should be =
namedQuery0.addArgument("1", java.lang.String.class);
In other words, the name of the argument from the argument list should be the same as the one in the EJBQL.