Re: [xmlblaster-devel] HistoryQos with sSQL92 subscrition filters

[Marcel Ruff <mr at marcelruff.info>]

Nelson Silva wrote:
> Hi,
>
> First of all thank you for your prompt reply :D
>
> I first intended to extend your authentication plugins, still as i'm 
> not yet sure it will run in the same machine as the xmlBlaster server 
> i chose to implement it as a client .. as soon as it's finnished i'll 
> lokk into that.
>
> Regarding the history i'm aware that it is possible to filter history 
> messages the problem is that what i'd like to have is a way to ask the 
> server for the N history messages that comply with a given filter.
>
> What would happen if you first published 5 messages with OiOi then 5 
> with Hello, and the subscribe with the filter with history=5 ?! would 
> you get the 5 messages with the OiOi content or with it simply return 
> null since in the last 5 history messages there was none with OiOi as 
> content ?
Yes, no OiOi.
You would need to set the history=1000000 and than filter.
If you want to limit the amount of messages matching your filter you 
would need to extend
xmlBlaster with such a flag (we would take this extension into our 
distribution)

Marcel