[rules-dev] Performance Question

[Greg Barton]

Are you sure you want to use rules for this?  If you're not going to do analysis more complex than what you've described I'd say straight java is a better option.

That being said, this is one thing to try:

1) Add a "processed" property of type boolean to Line, default value false.
2) Set processed = true on Lines that are matched
3) Have a low salience rule (lower than all other rules that match a Line) that matches a Line with processed == false and retracts it.  It must be low enough priority so it fires after any other rules that could match the Line.

--- On Fri, 10/17/08, hare ram <hare.bond at gmail.com> wrote:

> From: hare ram <hare.bond at gmail.com>
> Subject: [rules-dev] Performance Question
> To: rules-dev at lists.jboss.org
> Date: Friday, October 17, 2008, 1:56 PM
> Hello all,
> 
> This is the set of rules i have
> 
> rule "IP Route File rule"
>     salience 2000
>     when
>         Line ( line matches
> "^.*\s+show\s+ip\s+route\s*$" )
>         Line ( line matches
> "^.*\s+dest\s+address\s*$ )
>         file : FileFinder()
> 
>     then
>         file.setFileType("ip route file");
>         drools.halt();
> end
> 
> 
> 
> All I am doing in rules is, I read each line from the given
> file, convert
> them into Line Objects and see if any of my
> rules matches. There are about 50 such rules, that will
> help me
> differentiate what kind of file is present in my input
> directory.
> 
> The question I have , is there a way I can know if Line
> Object matched any
> of the rules ? If a Line Object is not matched by
> any of rules, I can just retract that object from the
> memory and prevent Out
> of Memory Exception if the file size is huge
> 
> Thanks
> Shiva
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> rules-dev mailing list
> rules-dev at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-dev

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