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Re: [spam] Re: [xmlblaster] Simple questions


most helpful, many thanks!


----- Original Message ----- 
From: "Michele Laghi" <laghi at swissinfo.org>
To: <xmlblaster at server.xmlblaster.org>
Sent: Monday, September 15, 2003 2:50 PM
Subject: [spam] Re: [xmlblaster] Simple questions

> Hi Thomas,
> Bikeev at gmx.net wrote:
> > Hello,
> >
> > I am just getting started with XMLblaster and it seems to be a great
> >
> > However I have few simple questions:
> >
> > 1. What is the difference between Subscribe() and Get() functions? Is it
> > better to "subscribe" on a particular topic or call get with a Xpath
query on
> > the msgKeyData (I am adding dome metadata to the key).
> >
> When subscribing (which as for the get can be done on a particular oid
> or as an xpath query) you get asynchroneous updates. One of the
> advantages is that you don't need to dedicate a polling thread to
> retreive the interesting messages. An other point is that using get will
> return you the last update of the message so if the publisher is faster
> then your get polling, then you will loose updates.
> > 2. Is there a way to flag a message as "unread" or "read" on the server
> > the re-retrieval recovery or monitoring purposes, dependent on if the
> > has been accessed by a client application.
> >
> Message updates are consumed when delivered (i.e. they are removed from
> the delivery/callback queue). Redelivery after a failure is already
> handled by the server. If you want to know which topics (or more
> finegrained which updates of theese topics) which have successfully been
> delivered to which clients, then I think you need to write a plugin.
> > 3. What is the proper way to add client specific properties, I am
writing a
> > small demo which loops over a specific directory and publishes the new
> > messages onto XB server. Should I use xmlBlaster.properties adding my
> > specific settings?
> >
> I think that is up to you. Personally for a little demo I would put it
> into xmlBlaster.properties or at the command line.
> > Thanks for the answers and the patience.
> >
> > Kind regards,
> > Thomas
> >
> >
> Saluti
> Michele