Suppose ClassRoom is an OM
ClassRoom classRoom=new ClassRoom();
classRoom.set...
...
classRoom.save();
...
A primary key will be generated and retreived in the save() method, how? After
inserting, select the latest record which have the equivalent attributes( could it be
a little dangerous? ), I guess. Anyway, maybe the select operation cost more than
inserting and the user didn't want the generated ID at all.
Can IDBroker make a new ID for an OM as soon as this OM is created? If could, we can
do like this...
ClassRoom classRoom=new ClassRoom(); //It has an ID now
Student s1=new Student();
s1.setClassRoomId(classRoom.getId().getBigDecimal().intValue()); //or Student
s1=classRoom.createNewStudent();
s1.set....
...
Student s2=new Student();
s2.setClassRoomId(classRoom.getId().getBigDecimal().intValue());
s2.set...
...
classRoom.set....
...
s1.save(conn);
s2.save(conn);
classRoom.save(conn);
conn.commit()
Just a thought ;-)Get more from the Web. FREE MSN Explorer download :
http://explorer.msn.com
