Okay everyone. Go sync down the drools-2 CVS module.
./build.pl clean all test
Watch some rules get applied to XML documents.
There's org.drools.RoughDom4jTest which looks for two documents:
doc #1
<a id="$ID$">
...
</a>
doc #2
<b id="$ID$">
...
</b>
One must have a root element of <a>, another must have a root element
of <b>, and the root elements must have an @id attribute that is the same.
Yes, it actually works.
Roughly, the rule is:
parameters:
Document(<a>) doc1
Document(<b>) doc2
local decls:
String id;
conditions:
id = doc1 -> string(/a/@id)
id = doc2 -> string(/b/@id)
action:
print HI MOM
The XPathFactExtractor can certainly be made more robust,
by letting the Tuple act as a VariableContext, allowing
wacky XPath-based filters:
$item/quantity > $request/quantity
Should be relatively painless, I think. Just need to have
a Jaxen Visitor to pull out variable references, maybe.
Anyhow, James, especially you, when you get a moment, check
it out.
-bob
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