[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2348) unable to resolve Type Declaration class
[
https://jira.jboss.org/jira/browse/JBRULES-2348?page=com.atlassian.jira.p...
]
Richard Ambridge commented on JBRULES-2348:
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drools-compiler, PackageBuilder.java line 743 has:
TypeDeclaration lastType = null;
try {
// Add the type declarations to the RuleBase
if ( newPkg.getTypeDeclarations() != null ) {
// add type declarations
for ( TypeDeclaration type : newPkg.getTypeDeclarations().values() ) {
lastType = type;
type.setTypeClass( this.rootClassLoader.loadClass( pkg.getName() +
"." + type.getTypeName() ) );
}
}
} catch ( ClassNotFoundException e ) {
throw new RuntimeDroolsException( "unable to resolve Type Declaration
class '" + lastType.getTypeName() + "'" );
}
If I debug this, I find that the pkg.getName() + "." + type.getTypeName() is
resolved to
defaultPackage.Message
so, its trying to load a class called "defaultPackage.Message"
which obviously isn't found..
unable to resolve Type Declaration class
----------------------------------------
Key: JBRULES-2348
URL: https://jira.jboss.org/jira/browse/JBRULES-2348
Project: Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-compiler, drools-guvnor
Affects Versions: 5.0.1.FINAL, 5.1.0.M1
Environment: Ubuntu 8.04
Reporter: Richard Ambridge
Assignee: Mark Proctor
Attachments: repository_export.zip, workbench.tar
Using the following code to create a Knowledge Base from a guvnor compiled pkg, (download
the pkg and put in /tmp/my.pkg)
private static KnowledgeBase readKnowledgeBase() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
File pkgFile = new File("/tmp/my.pkg");
if (pkgFile.exists() == false) {
System.out.println("Unable to find rule pkg");
} else {
System.out.println("RuleService. adding pkg");
kbuilder.add(ResourceFactory.newFileResource(pkgFile), ResourceType.PKG);
}
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (errors.size() > 0) {
for (KnowledgeBuilderError error: errors) {
System.err.println(error);
}
throw new IllegalArgumentException("Could not parse knowledge.");
}
KnowledgeBaseConfiguration conf =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
conf.setOption(EventProcessingOption.STREAM);
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(conf);
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
return kbase;
}
The pkg was created from Guvnor.
If in the package declaration area in Guvnor, (where you put the import statements)
If I put
import com.sample.Message
declare Message
@role( event )
end
then build the package, save it to disk /tmp/my.pkg
on startup I get:
org.drools.RuntimeDroolsException: unable to resolve Type Declaration class
'Message'
at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:759)
at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:516)
at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25)
at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:69)
at com.sample.DroolsTest.main(DroolsTest.java:27)
I am unable to declare an object as an event type in guvnor. This prevents any rules
creation and compiling :(
Attached is the workbench from eclipse, and the guvnor repository export
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