[rules-users] Eclipse + drools = The Eclipse JDT Core jar is not in the classpath ??

[Patrick Sannes]

Hi,

I tried to search a lot, but couldn't find a real solution to my problem. I
have the latest version of Eclipse installed and installed the drools plugin
5.0.1 . I configured runtime (dropped it in c:\Users\Patrick\Droolsruntime\)
After starting a new drools project It created a Hello World example (im
new, so a nice start ;))
When I tried to run the DroolsTest.Java I get the error at the end of the
email.
Hope someone can help me out.

Regards
Patrick

org.drools.RuntimeDroolsException: Unable to load dialect
'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java:org.droo
ls.rule.builder.dialect.java.JavaDialectConfiguration'
	at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderCon
figuration.java:274)
	at
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap
(PackageBuilderConfiguration.java:259)
	at
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfigura
tion.java:176)
	at
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfigu
ration.java:153)
	at
org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:242)
	at
org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:142)
	at
org.drools.builder.impl.KnowledgeBuilderProviderImpl.newKnowledgeBuilder(Kno
wledgeBuilderProviderImpl.java:29)
	at
org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuil
derFactory.java:29)
	at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:39)
	at com.sample.DroolsTest.main(DroolsTest.java:23)
Caused by: java.lang.RuntimeException: The Eclipse JDT Core jar is not in
the classpath
	at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(Ja
vaDialectConfiguration.java:94)
	at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDiale
ctConfiguration.java:55)
	at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderCon
figuration.java:270)
	... 9 more