[rules-users] Checking an xml field

[Otaduy del Paso, Zaloa]

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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