B2B Integration : A Practical Guide to Collaborative E-commerce

238 B2B Integration — A Practical Guide to Collaborative E-commerce
Management (PDM) enablers for the manufacturing domain. Other
OMG RFPs will soon be issued in the telecommunications, medical and
financial domains.
Application interfaces
These are interfaces developed specifically for a given application.
Because they are application-specific and because the OMG does not
develop applications (only specifications), these interfaces are not
standardized. However, if over time it appears that certain broadly
useful services emerge out of a particular application domain, they
might become candidates for future OMG standardization.
CORBA 3
The latest version of CORBA, CORBA 3, is built upon both the
successes and shortcomings of earlier versions of CORBA. CORBA 3
is divided into three major categories:
• Java and Internet integration;
• Quality of service control; and
• CORBA Component Model (CCM).
The biggest and most anticipated change in the CORBA 3 standard
is the CORBA Component Model. The introduction of CCM, along
with other features such as messaging, has helped CORBA catch up
to the other component frameworks. A few of the new CORBA 3
specifications, as provided by OMG, are outlined below:
Java and internet integration
CORBA 3 provides enhanced integration with the Java language and
the Internet:
Java-to-IDL Mapping
This mapping allows Java RMI objects to interoperate over the network
as CORBA objects. They have CORBA object references and emit the
HOP protocol. New mapping defines IDL interfaces for Java objects