Setting key inside doDML function

Question

Hi all,
I want to set the key inside doDML() with number retrieved from database sequence.
protected void doDML(int i, TransactionEvent transactionEvent) {
if (i == DML_INSERT) {
Key key= this.getKey();
DBSequence seq = (DBSequence)key.getAttribute(0);
if (seq.getSequenceNumber().compareTo(0) == -1 )
key.setAttribute(0,new DBSequence( getValueFromSequence("DB_SEQUENCE", getDBTransaction())));
super.doDML(i, transactionEvent);
When trying to set this key, I got this exception:
oracle.jbo.InvalidOperException: JBO-25221: Method Key.setAttribute not supported
I've tried another solution by getting the name of the key (i.e. key.getAttributeNames ()), and got this exception:
oracle.jbo.InvalidOperException: JBO-25221: Method Key.getAttributeNames not supported
Any solution??
Best Regards,
Bassam

Answer 1

Ok, try getting the key via the attribute definition.
        AttributeDef[] attrs = this.getEntityDef().getAttributeDefs();
        String nameKeyAttr = null;
        for (AttributeDef attr: attrs)
            if (attr.isPrimaryKey())
                nameKeyAttr = attr.getName();
                break;
        if (nameKeyAttr != null)
            SequenceImpl seq = new SequenceImpl("MY_SEQ", getDBTransaction());
            // assuming you have only one key
            this.setAttribute(nameKeyAttr, seq.getSequenceNumber());
        }Timo