Newbie: AUTO_PK_SUPPORT problem

Hi boys

 

I'm a newbie with Cayenne and have a little problem with auto pk generation.
I have read the page and watched the table at http://objectstyle.org/cayenne/userguide/design/autopk.html but it's not so easy to understand

I have read the document at http://www.objectstyle.org/confluence/display/CAY/Generated+Columns and watched the pictures but I can't find the "PK Generation Strategy" combobox in the Modeler.

 

table Employer
 int idPerson (PFK)
 int idcompany (PFK)

 

table Person
 int idPerson (PK)

 

table Company
 int idCompany (PK)
 
b) My Cayenne mapping is

 

 DbEntity Employer's relationships:
  toPerson (toDepPk checked)
  toCompany (toDepPk checked)

 ObjectEntity Employer's relationships:
    toPerson ("used for locking" not checked)
  toCompany ("used for locking" not checked)
 

 
public Employer employer;  
// note: person and company objects are fetched from two comboboxes of DataObjects
.....
employer.setToPerson(person);
employer.setToCompany(company);
// I haven't registered employer. Did I have ?
dataContext.commitChanges();

 

INFO  QueryLogger: --- will run 2 queries.

INFO  QueryLogger: --- transaction started.

INFO  QueryLogger: SELECT NEXT_ID FROM AUTO_PK_SUPPORT WHERE TABLE_NAME = 'EMPLOYER'

INFO  QueryLogger: *** error.

org.firebirdsql.jdbc.FBSQLException: GDS Exception. 335544569. Dynamic SQL Error
SQL error code = -204
Table unknown
AUTO_PK_SUPPORT
At line 1, column 37.

 at org.firebirdsql.jdbc.AbstractPreparedStatement.<init>(AbstractPreparedStatement.java:88)

....

 

 

Really I dont need to generate any pk because the table Employer has only two primary foreign keys, so I haven't create the AUTO_PK_SUPPORT table in my DB.
Well, I don't need that table but cayenne is looking for it, why ?
How I can solve that problem ?

 

 

Best wishes for the new year

 

Andrea