[ http://jira.codehaus.org/browse/DROOLS-466?page=all ]
Michael Neale resolved DROOLS-466:
----------------------------------
Resolution: Fixed
incorporated into 2.5
> Custom entity resolver support for RuleSetReader
> ------------------------------------------------
>
> Key: DROOLS-466
> URL: http://jira.codehaus.org/browse/DROOLS-466
> Project: drools
> Type: Improvement
> Components: io
> Versions: 2.1
> Reporter: Charles Zhao
> Assignee: Michael Neale
> Fix For: 2.5
> Attachments: RuleSetReader.java, drools-466.zip
>
>
> We are using Drools to build a validation framework and need to support
> reusable rule files that can be imported into ruleset files. We've searched
> around and seems the only way is to use xml entities (it would be very nice
> if drools has built-in import support though). Here is an example of how we
> use xml entity to import the rule file:
> <?xml version="1.0" ?>
> <!DOCTYPE rule-set [
> <!ENTITY sub-rules SYSTEM "rules/sub-rules.java.drl" >
> ]>
> <rule-set name="RuleSet"
> xmlns="http://drools.org/rules";
> xmlns:java="http://drools.org/semantics/java";
> xmlns:xs="http://www.w3.org/2001/XMLSchema-instance";
> xs:schemaLocation="http://drools.org/rules rules.xsd
> http://drools.org/semantics/java java.xsd">
>
> <!-- RULE FRAGMENT INCLUDES HERE -->
> &sub-rules;
>
> </rule-set>
> The problem is that we have to be able to import rule files from classpath as
> well. The solution came to my mind was to provide our own entity resolver
> that deals with rule files. But currently drools' RuleSetReader provides
> resolveEntity implementation that only resolves xml schemas and doesn't allow
> us to hook in another entity resolver.
> So I would propose to change RuleSetReader to support custom entity resolver.
> Attached is the modified version of RuleSetReader I used to fix the problem
> locally, and hope you guys will add the support to drools.
> Thanks.
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