IEEE Power & Energy Magazine - January/February 2016 - 79

L3:
Transport
Message

L2:
Message
Envelope

L1:
Domain
Data



... ...


SOAP
Header




Message

Envelope
?
?

... ...




?

?

?





Domain

Data

?
?
?
... ...


?





SOAP
Body

figure 9. A sample SOAP message.

that does not need to "unpack" the payload but just to
route it to the correct receiving applications. Typical
information that must be specified are the verb and
the noun, telling what needs to be done (verb) with the
content of the payload (noun).
✔ finally, the transport interface level l3 reflects the
standard simple object access Protocol (soaP) message (often meant when one says web service), with
the soaP header and the whole of level l2 encapsulated in the soaP message body.
There may be cases where a single actor needs to exchange
some of the messages within a single organization and in a
simplified way, without the need for platform independence
and overhead of, e.g., a web service (and its soaP implementation). To support this kind of exchange, we could simply skip the transport interface level l3 and pass around the
message envelope of level l2 with its containing payload in
level l1 by using a Java message service broker (in a standard
january/february 2016

way, as in Iec 61968-100) or some other means for message
exchange. This example has used the payload (l1) in w3c
Xml format. Given the structure of the envelope (l2), it
allows embedding domain payloads in literally any format,
including w3c rDf format, i.e., cImXml.
alternately, for certain data exchange scenarios, simple
file exchange may be sufficient in which case the domain
payload (l1) would simply be the file to exchange; in this
case, some non-standard preconfiguration needs to take
place (e.g., to state the UrI of the file on a file system).

How to Achieve Interoperability
Interoperability Between Disparate Systems
The central architectural idea behind the cIm is to describe
data semantics such that exchanged data objects can be traced
back to the canonical cIm semantics. The cIm supports this
by its capability to describe relationships between objects:
ieee power & energy magazine

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Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - January/February 2016

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IEEE Power & Energy Magazine - January/February 2016 - Cover3
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