[rules-users] Solution for reasoning over XML?

Wolfgang Laun wolfgang.laun at gmail.com
Sun Jan 13 11:16:24 EST 2013


I should have had it put up on the conference web site a long time ago.
Still needs final proofreading, and this list is not the place for it, but
you'll receive it via direct email.
-W

On 13/01/2013, Chris Selwyn <chris at selwyn-family.me.uk> wrote:
> Is this paper freely available?
> I would be interested in seeing a copy of it since I have recently been
> using with Drools to detect all sorts of data conditions in XML documents.
>
> Chris
>
> On 11/01/2013 07:03, Wolfgang Laun wrote:
>> There was my talk at IntelliFest 2012: "Reasoning with XML Data".
>> Although it assumes that XML elements are unmarshalled into regular
>> Pojos, it may still contain some useful ideas and code snippets.
>>
>> I'll send you the paper off-list, and I'd be interested to learn about
>> your reason for not converting to Pojos (using JAXB or similar).
>>
>> Best
>> Wolfgang
>>
>>
>> On 11/01/2013, craigparra <craigparra at gmail.com> wrote:
>>> Hi,
>>>
>>> I was looking around trying to find a solution for reasoning over any
>>> XML
>>> in
>>> drools, without having to convert the XML into java objects, but
>>> couldn't
>>> find any example where this had been done.
>>>
>>> I have opted to DOM parse the XML, then recursively wrap every Element
>>> node
>>> in a convenience class (XmlElement) and insert as facts.  That is every
>>> element is inserted individually as a fact.
>>>
>>> My conditionals look like:
>>>
>>> $xml : XmlElement(name == 'someName', value == 'someValue')
>>> $xml : XmlElement(path== '/some/xpathlike/path', value == 'someValue')
>>> $xml : XmlElement(attribute['someAttr'] == 'someValue')
>>>
>>> or using a DSL:
>>>
>>> An XML element exists
>>> - named someName with a value of
>>> - at path /some/xpathlike/path with a value in "someVal","someOtherVal"
>>>
>>> Is this a pattern that other drools users have encountered? Or tried to
>>> solve.
>>>
>>> It seems to work quite well, at least in my scenario - but clearly it
>>> has
>>> limitations based on the DOM parse (ie not great for massive XML files).
>>>
>>> Was wondering if anyone else had tried to solve how to use XML as facts?
>>>
>>>
>>>
>>> --
>>> View this message in context:
>>> http://drools.46999.n3.nabble.com/Solution-for-reasoning-over-XML-tp4021454.html
>>> Sent from the Drools: User forum mailing list archive at Nabble.com.
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>>> rules-users mailing list
>>> rules-users at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
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