[rules-users] How to set JANINO compiler with Drools5 M5

[Mark Proctor]

Shigeaki Wakizaka wrote:
> Hi.
> I'm kind of new to Drools5.0.
> Could I ask you guys how to set JANINO compiler with recent API?
>
> I just run the sample drl with EclipseIDE, which is download from drools
> site, and then
> the error occured- The Eclipse JDT Core jar is not in the classpath.
> So, I just want to know why this happens and how to set another compiler
> to retry.
>
>   
Just realised that wasn't documented in drools-api any more, so I just
updated it to the following, hopefully this answers your Q :)
* <p>
* Two dialects are supported, Java and MVEL. Java is the default
dialect.<br/>
* The Java dialect supports the following configurations:
* <ul>
* <li>drools.dialect.java.compiler = &lt;ECLIPSE|JANINO&gt;</li>
* <li>drools.dialect.java.lngLevel = &lt;1.5|1.6&gt;</li>
* </ul>
*
* And MVEL supports the following configurations:
* <ul>
* <li>drools.dialect.mvel.strict = &lt;true|false&gt;</li>
* </ul>
* </p>
*
* <p>
* So for example if we wanted to create a new KnowledgeBuilder that used
Janino as the default compiler we would do the following:<br/>
* <pre>
* KnowledgeBuilderConfiguration config =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();
* config.setProperty("drools.dialect.java.compiler", "JANINO");
* KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder( config );
* </pre>
* </p>
*
* <p>
* Remember the KnowledgeBuilderConfiguration could have taken a
Properties instance with that setting in it at constructor time,
* or it could also discover from a disk based properties file too.
* </p>
*
> Thanks in advance.
>
> waki
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