Received from Anit, which might help others comment....
________________________________
From: Gupta, Ankit (Ankit) [mailto:gupt...@avaya.com]
Sent: 29 January 2009 10:04
To: Anstis, Michael (M.)
Subject: RE: [rules-users] Parsing XML using Drools
Hi Mike,
Thanks for prompt reply ,
Actually right now I am streaming the xml
<BenchmarkResultsFor>
<Benchmark>DataProcessing</Benchmark>
<Workload>1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16</Workload>
<Memory>4, 4, 4, 8, 8, 12, 12, 16, 24, 24, 24, 24, 24, 24,
24, 24</Memory>
</BenchmarkResultsFor>
here we are using apache math api for interpolation
public MemoryBenchmarkResult(String name, double[] x, double[]
y) {
this.hostFunction = name;
// Create the interpolation function
SplineInterpolator i1 = new SplineInterpolator();
this.workload = x;
this.memory = y;
this.interpolator = i1.interpolate(this.workload, this.memory);
}
here we are passing the values of X Axis (Workload) and we get
the values of Y Axis (Memory ). Reading or Streaming of this XML are
doing using SAX .
This thing I want to do with Drools ...... as I know XML
Streaming is possible in Drools .
Regards
Ankit
________________________________
From: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Anstis,
Michael (M.)
Sent: Thursday, January 29, 2009 2:48 PM
To: Rules Users List
Subject: RE: [rules-users] Parsing XML using Drools
It is not clear how you want to use the XML?
If the XML represents Facts then you could use a worker Fact and
"FROM" to deserialise them and make them available to WM. For example:-
rule "get some XML facts"
when
$w : Worker()
Cheese( ) from $w.getCheesesFromXML();
then
//Do something with cheese
end
Obviously the XML need not be true serialised objects (in a JAXB
sense) but simply the properties that "getCheeseFromXML" rehydrates.
Drools is not exposing any of the XML libraries; they are merely
used by your code. The above would be (partially) equivalent to:-
Worker w = new Worker();
List<Cheese> cheeses = w.getCheesesFromXML();
for(Cheese c : cheeses) {
wm.insert(c);
}
rule "Cheese pre-loaded"
when
Cheese( )
then
//Do something with cheese
end
Partially equivalent as you could retract Cheese( ) in the
second way which would affect truth maintenance whereas the first way
would (I believe) not.
With kind regards,
Mike
________________________________
From: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Gupta, Ankit
(Ankit)
Sent: 29 January 2009 07:22
To: rules-users@lists.jboss.org
Subject: [rules-users] Parsing XML using Drools
Hi All,
How can we read and parse a XML file using
drools ?
Does Drools support the SAX or DOM parsing .
Regards
Ankit
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