Integration and orchestration is high on Oracle's
list so stay tuned.
How should we merge messages if each message could
have a different value for the same field?
Oracle Acquires CollaxaOracle revealed that their
BPEL tool is essentially based on the freshly acquired Collaxa BPEL engine and
editor. I made a bet with Rupin from DigitalGuru that my book would sell out. Each
Smart Proxy keeps the Return Address and additional information while all
sub-services execute just like a call stack maintains local variables and the return
address.
Solving a problem multiple times at different
layers in a layered architecture can lead to inefficiencies.
How should we merge messages if each message could
have a different value for the same field? Each proposed standard defines the name,
type, and meaning of fields and how they are supposed to be used.
That type of question is answered by another
category of "integration style".
Essentially, the messaging infrastructure
implements an Aggregator.
True encapsulation on the other hand happens when a
complex implementation is wrapped with a much simpler public interface. Patterns can
be combined and morphed.
Granted, as patterns mature, they ultimately tend
to be incorporated into libraries.
This is exactly what happens in case of a Splitter
or Content-Based Router.
This way we get an accurate depiction of the system
without imposing a certain structure onto it.
Automated tools to ana
Each proposed standard defines the name, type, and
meaning of fields and how they are supposed to be used.
Compilers already perform the tedious task of
converting high-level instructions into low-level assembly codes or byte codes. It
is unlikely that a quick-and-dirty solution developed at the application level is
going to be that reliable. Our client was facing two main issues: first, the stored
procedure was becoming unwieldy due to new requirements for the support of new types
of products and scores.
But I believe that other forces are at work. Our
client was facing two main issues: first, the stored procedure was becoming unwieldy
due to new requirements for the support of new types of products and
scores.
The area in the middle of the picture above
describes the area where there is no clear cut answer unless you know the history of
the system you are observing.
It is unlikely that a quick-and-dirty solution
developed at the application level is going to be that reliable.
Most publish-subscribe messaging systems specify
topic hierarchies in a specific textual notation, such as
topic.