poid

In particular, it would be unreasonable to assume that we could afford a database transaction per POID request.

The component consists of a singleton class named PoIdGenerator, exposing a simple API, and responsible for managing blocks of POIDs.

That is to say, under no circumstances shall a non-unique POID be dispensed to a client.

One approach to the problem uses a segmented POID address space (see References ).

Clients will need to handle exceptions when requesting PoIds, since getting a PoId could result in a remote call.

What should happen when a client requests a POID?

Listing 7 shows how to use a join with both relational and XML predicates and return, for each Purchase Order, the POID, and customer name.

The factory requests a new account POID, and is assigned a range of 100 POIDs.

And the client itself should not have responsibility for managing blocks of POIDs.

For our purposes, POIDs are unique within object type.

We will refer to these identifiers as persistent object IDs (POIDs).