Transformations in BPEL/ESB

Hi,
Can anybody explain how the transformations are handled
at run-time by BPEL or ESB? I have the following
questions, which I don't have much material to discuss with:
1. How does BPEL handle a transformation at runtime?
2. If the message size is very high, how is it handled?
3. Is there a difference between BPEL and ESB in
handling the transformations?
4. If the message size is huge, say in terms of GB in size,
how it is handled in the memory? Does it use any kind of
caching?
If anybody can point me to some documents or links,
that would be very helpful in understanding these concepts.
This is required for us since we have a requirement where the
message size can reach upto 7GB.
Thanks in advance.
Leo.

1. How does BPEL handle a transformation at runtime?
This is done based on XML using xpath queries or by using the XSLT translator.
2. If the message size is very high, how is it handled?
The same
3. Is there a difference between BPEL and ESB in
handling the transformations?
No, they are using the same code.
4. If the message size is huge, say in terms of GB in size,
how it is handled in the memory? Does it use any kind of
caching?
Everything is handled in memory. This means that you must be aware on this, resulting in garbage collection in the JVM engine.
http://download-uk.oracle.com/docs/cd/B31017_01/integrate.1013/b28982/toc.htm

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<div class="jive-quote">
What if I am integrating two custom application where I am sure that a pre-build PIP will never be available.
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<br>
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Thanks in advance.
Inder

Hi
I even installed SOA Suite 10.1.3.4 MLR#5 Advanced installation with Oracle Express dehyderation store.
I was able to use WSIF rejection handler with this upgrade... but bpel rejection handler was still a failure.
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At least not upto now.
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Inder
Keep going...

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