[rules-dev] xdrl fixes/enhancements

[Mark Proctor]

On 10/05/2011 08:10, Veit Guna wrote:
> Hi.
>
> Any chance that this could be reviewed and maybe integrated into the
> release?
>
> https://jira.jboss.org/browse/JBRULES-2672
I'm in two minds on this. Edson and I are thinking of changing the xml 
parser to just be:
<Pattern object-type="xxxx">
<expr>......</expr>
<expr>......</expr>
<expr>......</expr>
</Pattern>

With any valid  expression allwed in expr, i.e. any combinatino of ||, 
&&, method calls, +, - etc. Which follows what we've done with free-form 
drl.
Our current approach to normalising expressions in XMl isn't working too 
well, and the more we extropolate that the worse it gets:
<dro:pattern object-type="String">
<dro:and-constraint-connective>
<dro:field-constraint field-name="this">
<dro:literal-restriction evaluator="!=" value="null"/>
</dro:field-constraint>
<dro:field-constraint field-name="this.toLowerCase">
<dro:literal-restriction evaluator="==" value="true"/>
</dro:field-constraint>
</dro:and-constraint-connective>
<dro:from>
<dro:expression>fctv_17263.getHeaderValues("X-My-Header");
</dro:expression>
</dro:from>
</dro:pattern>

But I do recognise that you patch might give a lifeline to existing XML 
users....

Mark

> _______________________________________________
> rules-dev mailing list
> rules-dev at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-dev
>
>