Checking an xml field
by 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