Hi Silvain
----- Original Message -----
From: "Silvain Piree" <[EMAIL PROTECTED]>
>
> Hi,
>
> while browsing through the DOM4J sources I encountered the package
> "org.dom4j.rule".
>
> According to the documentation this is a "a Pattern based
> XML rule engine which implements the full XSLT processing
> model while allowing any Action to be fired if a pattern matches.".
>
> That sounds interesting! Does it work?
Of course! :-)
> Is there any documentation
> how to use this package?
Unfortunately there's not much right now. Probably the best bet is to look
around the test cases at
dom4j/src/test/org/dom4j/rule/
e.g. TestStylesheet.java demonstrates how to create a 'stylesheet' of Rules.
A Rule has a Pattern and an Action. The Action can be anything at all, the
Pattern is an XSLT-style pattern to match some node or nodes.
So its a kind of XSLT engine which allows pluggable actions of any kind.
Here's some example pseudo code...
final Stylesheet stylesheet = new Stylesheet();
Pattern pattern = DocumentHelper.createPattern( "foo[@x='123]" );
Action action = new Action() {
public void run(Node node) throws Exception {
// do something!
// apply any child templates
stylesheet.applyTemplates(node);
}
};
Rule rule = new Rule( pattern, action );
stylesheet.addRule( rule );
...
Document document = ...;
stylesheet.run( document );
James
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