Re: [xmlblaster] about update and xmlrpc

[Marcel Ruff <mr at marcelruff.info>]

Cyrille Giquello wrote:

> Hello,
>
> I could not get a update with several messages. I think perhaps when 
> using xmlrpc we only get one message per update.
> If there are 2 messages (on the same query subscribtion), xmlBlaster 
> will call 2 times our update callback ...
>
> What I did is :
>
> - connect a client. publish 2 messages with the same topic.
> - disconnect that client.
> - connect another client, subcribing it to the topic.
> - xmlBlaster call 2 times its callback update.
>
> Is it normal ?

For the current  XMLRPC implementation - Yes.

The XmlRpcCallbackImpl.java:update() does not allow
to send an array of messages.

Our Corba and SOCKET protocol drivers support sending bulks  of messages
in one
callback call - we call this burst mode - there are some configuration
properties which allow to configure the burst mode (like collecting for some
milli seconds the messages and send them in a bulk).

Note that this is primary a performance issue (but you could see as well
the bulk array as sort of a transaction context - everything or nothing
is delivered
of the current bulk).

regards
Marcel

> Cyrille