Sequences using JD2 InfoProducer/InfoSwing

Question

Can you tell me how to assign [automatically] a unique value to one member of a composite primary key in a detail table each time the NavigatorBar inserts a new row into it.
I've been trying things like
select sequence1.nextval, col_id from detail in the queryInfo property
and
master.col_id = detail.col_id in the masterLinkInfo property
. . . naturally, to no avail.
Phil

Answer 1

Here are some items from previous posts on this issue...
For the Nextval question, just do one of the following:
(1) If you want an ON-INSERT trigger to assign the sequence value, then...
Mark the Primary Key attribute as
"[x] Refresh on Insert" in the Attributes
panel of the EO Wizard for the attribute
that the BEFORE INSERT FOR EACH ROW trigger
will be assigning.
(2) If you want your Entity Object to assign the sequence value, then...
Override the create() method in your EntityImpl subclass and write the following code:
Integer i = (new SequenceImpl("YOURSEQNAME")).getData();
setYourPrimaryKeyAttrName(new Number(i));
Alternatively, you can override the doDML() method and put the code in their if the operation is DML_INSERT.
The only difference is that one will assign the sequence at the moment the EO is instantiated, the only only when
it is physically inserted.
//Here's a code example that works for the
// customer table in the online order
// sample application that ships with
// jdeveloper 3. You need to override the
// entity's create() method (when you
// generate the entity you need to generate
//a create() method - check "create method"
// in the Java tab of the entity wizard).
public void create(AttributeList attributeList) {
super.create(attributeList);
SequenceImpl s = new SequenceImpl("customer_seq", getDBTransaction());
Integer next = (Integer)s.getData();
setId(new Number(next.intValue()));
}