RV: [rules-users] Checking an xml field

[Scott Reed]

Zaloa,
You haven't answered my question as what the problem is. Do these rules 
compile?
It seems to me that you have misunderstood how the condition part of the 
rules work.
I agree with David that it would help for you to study the manual some 
more and to work through some of the tutorials.
Since this is a Drools forum, there are probably not a lot of folks who 
understand exactly how JAXP translates the XML into beans. You are more 
likely to get help here if you include the relevant portions (get 
methods) of the API output by JAXP.

Otaduy del Paso, Zaloa [10/7/2008 11:22 AM] wrote:
>
> Hi David,
>
>  
>
> Thanks for your helpful response. The problem was that the element GEO 
> can appear 0 or many times so what I needed to write was this
>
>  
>
> when
>
>                         OASISTSO10($e: EVENT)
>
>                         OASISTSO10($e.*GEO[0].*POSITION.LOCID == "40005")
>
>             Then
>
>                         Action
>
>  
>
> instead of
>
>             when
>
>                         OASISTSO10($e: EVENT)
>
>                         OASISTSO10($e.GEO.POSITION.LOCID == "40005")
>
>             Then
>
>                         Action
>
>  
>
> Now I'm facing another problem. I need to check if the element GEO 
> exists before checking the POSITION, otherwise it throws an outofbound 
> exception.
>
> I tried with:
>
>  
>
>  when
>
>                         OASISTSO10($e: EVENT)
>
>                         EVENT($g: GEO)
>
>                         OASISTSO10($e.GEO[0].POSITION.LOCID matches  
> "40.*")
>
>  
>
> But it doesn't work. Any hints on this?
>
>  
>
> Thanks in advance,
>
> *Zaloa Otaduy del Paso*
>
> ------------------------------------------------------------------------
>
> *De:* rules-users-bounces at lists.jboss.org 
> [mailto:rules-users-bounces at lists.jboss.org] *En nombre de *David Sinclair
> *Enviado el:* martes, 07 de octubre de 2008 15:58
> *Para:* Rules Users List
> *Asunto:* Re: RV: [rules-users] Checking an xml field
>
>  
>
> Read the manual man. Your rules don't make any sense
>
> http://downloads.jboss.com/drools/docs/4.0.7.19894.GA/html_single/
>
> On Tue, Oct 7, 2008 at 9:49 AM, Scott Reed <sreed at avacoda.com 
> <mailto:sreed at avacoda.com>> wrote:
>
> What is the problem you are seeing? Do the rules compile ok?
>
> Otaduy del Paso, Zaloa [10/6/2008 12:08 PM] wrote:
>
> Does anybody know the answer to my question? I'm not able to solve 
> this issue and don't find any clarifying tutorial either....
>
>  
>
> Hi,
>
>  
>
> I'm new in drools and I'm having some problems accessing an xml field. 
> I'm using drools with jaxb to treat xml files that follow an specific 
> xsd. I have the following xml (this is just a piece of the xml):
>
>  
>
> <OASIS_TSO_1_0>
>
>       <EVENT>
>
> <EVENT_ID>EVENT_ID_03/10/2008 10:22:36</EVENT_ID>
>
> <NODE_ID>00</NODE_ID>
>
> <OTHER_EVENT_ID>Incidente UME</OTHER_EVENT_ID>
>
> <EVENT_TYPE>POL</EVENT_TYPE>
>
> <SOURCE>HUMDED</SOURCE>
>
> <SEVERITY>EXTREM</SEVERITY>
>
> <CERTAINTY>88</CERTAINTY>
>
> <DECL_DATIME>2008-10-03T10:20:47.0000000+02:00</DECL_DATIME>
>
> <GEO>
>
> <DESCRIPTION/>
>
> <POSITION>
>
> <LOC_ID>14021</LOC_ID>
>
> <COORD>
>
> <LAT>37.9811636567434</LAT>
>
> <LON>-4.85417587343286</LON>
>
> <HEIGHT>0</HEIGHT>
>
> </COORD>
>
> </POSITION>
>
> </GEO>
>
>      </EVENT>
>
> </OASIS_TSO_1_0>
>
>  
>
>  
>
> I already have a couple of rules working, but they are simple rules, 
> like this one:
>
>  
>
> rule "Rule1"
>
>     salience 10
>
> when
>
>                         OASISTSO10($e: EVENT)
>
> OASISTSO10($e.SEVERITY == "EXTREM") or OASISTSO10($e.SEVERITY == "SEVERE")
>
>             then
>
>                         action
>
>  
>
> The problem appears when I have to check the LOC_ID field and I don't 
> know how to access to it. I have tried several things but none of them 
> work
>
>  
>
> 1.
>
>             when
>
> OASISTSO10($e: EVENT)
>
>                         OASISTSO10($e.GEO.POSITION.LOCID == "40005")
>
>             then
>
> 2.
>
>             when
>
> OASISTSO10($e: EVENT)
>
> OASISTSO10($g: $e.GEO)
>
>                         OASISTSO10($p: $g.POSITION)
>
>                         OASISTSO10($p.LOCID  == "40005")
>
>             Then
>
>  
>
> I have also tried with ($e.GEO.POSITION.DESCRIPTION, just in case the 
> "_" character was the problem. But the same results... I have searched 
> also for examples with xmls but I haven't had luck.
>
> Any help would be appreciated. Thanks in advance,
>
>  
>
> Zaloa
>
>  
>
>
>
> ------------------------------------------------------------------------
>
>
>  
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>
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>
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