Re: MimeType changes during transfer?

[Marcel Ruff <ruff at swand.lake.de>]

Heinrich Götzger wrote:
> 
> On Mon, 7 May 2001, Marcel Ruff wrote:
> 
> >Heinrich Götzger wrote:
> >>
> >> In a talk, Marcel and I had recently, I learned, that this is a
> >> undocumented feature or a bug, depending on the point of view.
> >>
> >> Actually the subject of this mail should be something like:
> >> 'MimeType changes _not_ during a session'
> >>
> >> But what am I talking about?
> >> If a message is been published with a certain oid, it's been put in the
> >> xmlblaster intern database including all relevant message info like
> >> mimeType.
> >>
> >> Later publishes of these messages with different mimeTypes would _not_
> >> force an update of the xmlBlaster intern database stored mimeType.
> >> Therfore I'm not able to receive the MimeType in the subscriber I just
> >> pulished in the publisher if it differs from the first mimeType of this
> >> message ever published.
> >>
> >> This would lead to 2 possible solutions:
> >>
> >> 1. To check and/or set the mimeType for every message which has been
> >> published.
> >>
> >> 2. To expand the qos with an argument like mimeTypeForce=yes or something
> >> appropriate else.
> >>
> >> to 1. this would slow down the communication and the throughput of
> >> xmlblaster dramatically.
> >>
> >> So I would intend to proposal 2.
> >
> >My vote for 2. as well,
> >are you willing to implement it?
> 
> I could give it a try.
> 
> >
> >>
> >> We would get the opportunity to subscrib(e) to a message independently of
> >> it's mimeType.
> >>
> >> What dou you think?
> >>
> >> How would one expect a MOM (or xmlBlaster) working in this case?
> >>
> >> Any ideas?
> >>
> >> Marcel, am I correct?
> >
> >How could i tell if you are correct :-)
> >Life is like our rainbow fish, it is so
> >colorful and diverse, everything has its own truth ...
> 
> ok, do we get close to a good truth?

>From my point of view: yes.

But the qos element should possibly be:

   <updateMetaData>true</updateMetaData>

Marcel
> 
> regards
> 
> Heinrich

-- 
Marcel Ruff
mailto:ruff at swand.lake.de
http://www.lake.de/home/lake/swand/
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