Greetings!
I am attempting to run the HelloWorld example for Drools 4. I have Eclipse 3.3
setup on Windows with the Drools plugin. I have created a project with the
Drools examples and added all the Drools .jar files to the project. Everything
compiles. When I initially ran HelloWorldExample.java it appeared that it
could not find the HelloWorld.drl file. So, I moved that file into the same
directory as HelloWorldExample.java and ran again. This time I am getting an
error that the JDT compiler is not found even though it appears that there are
JDT jar files in the Eclipse plugins.
I also attempted to run this example under Linux from the command line. In
this case I placed all the Drools .jar files into the JRE ext folder and
changed the source code to use the Janino compiler by adding:
// Set up for the Janino compiler, not Eclipse
System.setProperty("drools.dialect.java.compiler", "JANINO");
PackageBuilderConfiguration cfg = new PackageBuilderConfiguration();
JavaDialectConfiguration javaConf =
(JavaDialectConfiguration)cfg.getDialectConfiguration("java");
This version compiles with javac and runs with java -cp . HelloWorldExample but
gives me an error within the compiler while compiling the .drl file:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String
index out of range: -1
at java.lang.String.substring(String.java:1938)
at
org.drools.base.ClassTypeResolver.importClass(ClassTypeResolver.java:242)
at
org.drools.base.ClassTypeResolver.resolveType(ClassTypeResolver.java:158)
at
org.drools.rule.builder.dialect.mvel.MVELDialect.addImport(MVELDialect.java:257)
at
org.drools.compiler.DialectRegistry.addImport(DialectRegistry.java:98)
at
org.drools.compiler.PackageBuilder.mergePackage(PackageBuilder.java:377)
at
org.drools.compiler.PackageBuilder.newPackage(PackageBuilder.java:350)
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:267)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167)
at HelloWorldExample.main(HelloWorldExample.java:39)
It is dying on this line:
builder.addPackageFromDrl( source );
My version of HelloWorldExample.java the same as the given example except for
the addition of the lines above for Janino. My ultimate goal is to run this
all under Linux, I am not an Eclipse user.
Any help getting this working would be greatly appreciated!
Ron
_________________________________________________________________
Introducing Live Search cashback . It's search that pays you back!
http://search.live.com/cashback/?&pkw=form=MIJAAF/publ=HMTGL/crea=introsrchcashback
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
