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https://issues.apache.org/jira/browse/JENA-1728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16880404#comment-16880404
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Lorenz Bühmann commented on JENA-1728:
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Not sure about your workflow, but just in case you can use Java after user
input - you should be able "validate" the rules via
{code:java}Rule.parseRules(rules){code}
or
{code:java}Rule.rulesFromURL(uri){code}
> Fuseki Assembler ignore ja:rulesFrom on Error
> ---------------------------------------------
>
> Key: JENA-1728
> URL: https://issues.apache.org/jira/browse/JENA-1728
> Project: Apache Jena
> Issue Type: Improvement
> Components: Fuseki
> Affects Versions: Jena 3.12.0
> Environment: GNU/Linux (Debian)
> Reporter: tdbrec
> Priority: Major
> Labels: Assembly, fuseki2, inference, reasoner, ruleengine
>
> {code:java}
> :dataset a ja:InfModel ;
> ja:baseModel ..... ;
> ja:reasoner [
> ja:reasonerURL <http://jena.hpl.hp.com/2003/GenericRuleReasoner> ;
> ja:rulesFrom <file:///rules-1> ;
> ja:rulesFrom <file:///rules-2> ;
> ] .
> {code}
> If one of the files ja:rulesFrom contain syntax errors, Fuseki stops working.
> It would be useful to have a way for "loading or ignoring" rules, for example
> ja:rulesOrIgnoreFrom <...>
> My use case is that I'm accepting inference rules from users, and the only
> way to update inference rules is by writing them to a file, append a new
> ja:rulesFrom in the configuration, and reload Fuseki. Even though this
> process is pretty cumbersome for updating rules, at least it's doable and I'm
> OK with that. The major stopper is that there isn't a way to validate rules,
> so when I ask Fuseki to load a broken file it will refuse to work until I fix
> the file manually.
> A different option could be a new "ja:rulesFromDirectory" that will
> automatically load all files inside a directory ignoring any file that raise
> an exception.
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