How do I copy a dbsequence key from one entity to another

Question

using the SRDEMO database as an exemple. I created a new table called BOOK. Book is a kind of product. THe primary key of book is the primary key of product. In jdev I created a new updatable entity based on book and a view combining product and book. The product ID gets generated by a trigger, as currently defined in srdemo db. When I run my view in the tester, the product id shows with a negative number, which is the expected behavior for dbsequence ID. The book ID is blank, which is also expected since its value must be copied from the product ID. Book ID is of type NUMBER. So I created a new create method in my viewImpl:
protected void create(AttributeList attributeList) {
System.out.println("in create prodview...");
Number no=this.getProdId().getSequenceNumber(); // get the generated prodid from the sequence
System.out.println("BookId="+no);
this.setBookId(no); // initialise book id with product id
Now when I run the tester I see the same negative number for productID and BookID, as expected. But when I commit my change I get a ORA-02291 on BookID. How do I get BookID initialize with the actual productID ? I'm using jdev 10.1.3.3
Edited by: yvesg2 on Oct 1, 2009 9:12 AM

Answer 1

How about this?
oracle.jbo.server.SequenceImpl sequence = new oracle.jbo.server.SequenceImpl("<Sequence_Name>(Eg. BOOK_ID_SEQ)", getDBTransaction()); // Name of the sequence in DB that generates your Book ID
        if(sequence != null) {
          int no = sequence.getSequenceNumber().intValue();
          System.out.println("BookId="+no);
          this.setBookId(no); // initialise book id with product id
       }-Arun
Untested