Re: [rules-users] ClassCastException: MVELDialectConfiguration cannot be cast to DialectConfiguration
the key to the problem is this line in the error listing: "Caused by:
java.lang.RuntimeException: The Eclipse JDT Core jar is not in the
classpath"
This reference is to the library "core-3.4.2.v_883_R34x.jar" which is
installed by the Eclipse Drools plugin
If you add core-3.4.2.v_883_R34x.jar to your libraries then you won't get
the runtime exception.
On Tue, Mar 26, 2013 at 12:59 PM, Peach Wyss <peach_wyss(a)yahoo.com> wrote:
Hy
I get the following error:
...
Caused by: org.drools.RuntimeDroolsException: Unable to load dialect
'org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel:org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration'
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:313)
...
... 42 more
Caused by: java.lang.ClassCastException:
org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration cannot be
cast to org.drools.compiler.DialectConfiguration
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:308)
... 51 more
I'm using drools in a maven project, pom.xml:
...
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-compiler</artifactId>
<version>5.5.0.Final</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>5.5.0.Final</version>
</dependency>
...
What could cause this error?
Thanks for your help.
Kind regards,
Peter
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