Re: [rules-users] Unable to load dialect java from Ant task

Thanks a lot for the answer. The problem is exactly that one: how could I know what the dependencies for the DRools compiler are?! I thought this list would know :)) Anyway, I'll print out the Eclipse runtime classpath and compare them two to see what stands out. The Ant task is mentioned here and there in the documentation (albeit without examples) so I kinda thought more people are using it. An older thread of this same list talks about adding (only) the drools-ant to the classpath, which of course solves the ant task itself but none of its dependencies... I find it difficult to believe that the compiler depends on some Eclipse stuff, especially after I added ALL the jars existing in the Eclipse configuration. The only thing I cannot directly rule out is the classloader issue, but that's also the only thing I have no idea how to debug/solve :( Thank you, M --- On Sun, 9/21/08, Edson Tirelli <tirelli(a)post.com&gt; wrote: > This is always related to classpath problems. Make sure you have all > dependencies set in your classpath and if that does not work, maybe > make an> example project with the error available somewhere that > another person can take a look at it. (don't think you can send zip > attachements to the list, but not sure). > > Eclipse-plugin embeds a series of dependency jars that are > transparently added to the classpath. That is the major reason you may > see the problem outside of eclipse, but not inside. Classloader > configuration is also another reason. > > []s > Edson > > 2008/9/18 Soterro <send_lotsa_spam_here(a)yahoo.com&gt; > > > Hi all, > > > > I have a perfectly running Eclipse 3.3 with DRools > 4.0.4 and JDK 1.5.14. > > The rules are compiled with a post build Ant task > which uses Janino (need > > it for Tomcat compatibility). > > Now OUTSIDE Eclipse it seems I cannot use that Ant > task to save my life :( > > I tried switching from Janino to the default compiler, > same thing. I always > > get this infamous error: > > > > BUILD FAILED > > E:\buildRules-hudson.xml:30: RuleBaseTask failed: > Unable to load dialect > > > 'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java' > > at > > > com.csc.ezbook.eztarif.rules.DroolsCompilerAntTaskStandalone.execute > > (DroolsCompilerAntTaskStandalone.java:163) > > at > > > org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288) > > at > sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > > at > > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. > > java:39) > > at > sun.reflect.DelegatingMethodAccessorImpl.invoke( > > DelegatingMethodAccessorImpl.java:25) > > at > java.lang.reflect.Method.invoke(Method.java:585) > > at > > > org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java > > :105) > > at > org.apache.tools.ant.Task.perform(Task.java:348) > > [...] > > Caused by: org.drools.RuntimeDroolsException: Unable > to load dialect > > > 'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java' > > at > org.drools.compiler.PackageBuilderConfiguration.addDialect( > > PackageBuilderConfiguration.java:152) > > at > org.drools.compiler.PackageBuilderConfiguration. > > > buildDialectConfigurationMap(PackageBuilderConfiguration.java:140) > > at > org.drools.compiler.PackageBuilderConfiguration.init( > > PackageBuilderConfiguration.java:117) > > at > org.drools.compiler.PackageBuilderConfiguration.<init>( > > PackageBuilderConfiguration.java:94) > > at > > > com.my.app.rules.DroolsCompilerAntTaskStandalone.getPackageBuilder( > > DroolsCompilerAntTaskStandalone.java:257) > > at > com.my.app.rules.DroolsCompilerAntTaskStandalone.execute( > > DroolsCompilerAntTaskStandalone.java:136) > > > > That "DroolsCompilerAntTaskStandalone" is my > task using the default > > compiler like this: > > PackageBuilderConfiguration conf = new > PackageBuilderConfiguration(); > > conf.setClassLoader( loader ); > > PackageBuilder builder = new PackageBuilder( conf > ); > > > > If I use Janino like below the error is exactly the > same... > > PackageBuilderConfiguration pkgBuilderCfg = new > > PackageBuilderConfiguration(); > > pkgBuilderCfg.setClassLoader( loader ); > > JavaDialectConfiguration javaConf = > (JavaDialectConfiguration) > > pkgBuilderCfg.getDialectConfiguration( > "java" ); > > javaConf.setCompiler( > JavaDialectConfiguration.JANINO ); > > PackageBuilder builder = new PackageBuilder( > pkgBuilderCfg ); > > > > Again, in Eclipse all is working fine. I checked > Ant's classpath, here it > > is: > > > E:\apache-ant-1.7.0\bin\..\lib\ant-launcher.jar > > E:\apache-ant-1.7.0\lib\*.jar > > C:\Program > Files\Java\jdk1.5.0_14\lib\tools.jar > > > > Here is how I provide a classpath: > > <taskdef name="rulescompiler" > classname="com.my.app.rules. > > DroolsCompilerAntTaskStandalone" > > classpathref="droolsutils.classpath" /> > > > > <target depends="newfilesarethere" > name="build" > > unless="rulesCompile. > > notRequired"> > > <rulescompiler > srcdir="${THIS_PROJ}/src/com/my/app/rules" > > > > > tofile="${THIS_PROJ}/build/classes/com/my/app/rules/ > > packaged.rules" > > > classpathref="droolsutils.classpath" > > > <include name="*.drl" > /> > > </rulescompiler> > > </target> > > > > The classpath I provide contains pretty much all > libraries I use normally > > in the project, but I tried even to add ALL jar's > from the Eclipse 3.3 > > install directory (that would include all DRools 4.0.4 > libraries, with antlr > > and whatnot) > > > > I tried also with DRools 4.0.7, same behaviour... > > > > What does that mean and where is it coming from? Could > it have issues with > > the tools.jar from Java 1.5.0_14? > > > > Thank you for any input, > > M > > > > > > > > _______________________________________________ > > rules-users mailing list > > rules-users(a)lists.jboss.org > > https://lists.jboss.org/mailman/listinfo/rules-users > > > > > > -- > Edson Tirelli > JBoss Drools Core Development > JBoss, a division of Red Hat @ www.jboss.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users