10:39 p.m.
hi ,
I am using drools 5.1 and i am creating one dynamic class .
Now How drools will aware of this dynamic class. It gives exception
that class not found .
So how i can say drools classloader that new class exist
Thanks & Regards
Saurabh
11 p.m.
If you use type declarations, drools is already aware of that. If you
are generating the classes in your own external classloader, that
classloader should be passed to the kbuilder and kbase when you
instantiate them.
Mark
On 23/02/2011 04:39, saurabh maheshwari wrote:
hi ,
I am using drools 5.1 and i am creating one dynamic class .
Now How drools will aware of this dynamic class. It gives
exception that class not found .
So how i can say drools classloader that new class exist
Thanks & Regards
Saurabh
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11:15 p.m.
hi ,
I am creating external classloader , but can u tell me the syntax for
passing the external classloader to kbuilder and kbase .
in kbuilder i am doing like that
kbc =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(null,mydyanmicclass.getClassLoder());
kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbc);
but how i do this with kbase.
Thanks & Regards
Saurabh
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11:37 p.m.
hi ,
When i am doing like
kbc =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(null,dyanmicclass.getClassLoader());
kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbc);
kbuilder.add(source, ResourceType.DRL);
if (kbuilder.hasErrors()) {
System.err.println(kbuilder.getErrors());
return false;
}
KnowledgeBaseConfiguration kbaseConfig
=KnowledgeBaseFactory.newKnowledgeBaseConfiguration(null,dyanmicclass.getClassLoader());
kbase = KnowledgeBaseFactory.newKnowledgeBase(kbaseConfig);
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
then i am facing following problem .
StackTrace: org.drools.RuntimeDroolsException:
java.lang.ClassNotFoundException:
Rule_my001_check_0AccumulateExpression0Invoker
at
org.drools.rule.JavaDialectRuntimeData.reload(JavaDialectRuntimeData.java:383)
at
org.drools.rule.JavaDialectRuntimeData.onBeforeExecute(JavaDialectRuntimeData.java:139)
at
org.drools.rule.DialectRuntimeRegistry.onBeforeExecute(DialectRuntimeRegistry.java:132)
at org.drools.compiler.PackageBuilder.reloadAll(PackageBuilder.java:683)
at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:641)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:266)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:458)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
Thanks & Regards
Saurabh
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11:59 p.m.
On 23/02/2011 05:37, Saurabh wrote:
hi ,
When i am doing like
kbc =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(null,dyanmicclass.getClassLoader());
kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbc);
kbuilder.add(source, ResourceType.DRL);
if (kbuilder.hasErrors()) {
System.err.println(kbuilder.getErrors());
return false;
}
KnowledgeBaseConfiguration kbaseConfig
=KnowledgeBaseFactory.newKnowledgeBaseConfiguration(null,dyanmicclass.getClassLoader());
kbase = KnowledgeBaseFactory.newKnowledgeBase(kbaseConfig);
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
That
should work, if it's not it must be a bug. Create a self contained
test, similar to those in DynamicRulesTest.java and submit it as a jira
for us to look over.
Mark
then i am facing following problem .
StackTrace: org.drools.RuntimeDroolsException:
java.lang.ClassNotFoundException:
Rule_my001_check_0AccumulateExpression0Invoker
at
org.drools.rule.JavaDialectRuntimeData.reload(JavaDialectRuntimeData.java:383)
at
org.drools.rule.JavaDialectRuntimeData.onBeforeExecute(JavaDialectRuntimeData.java:139)
at
org.drools.rule.DialectRuntimeRegistry.onBeforeExecute(DialectRuntimeRegistry.java:132)
at org.drools.compiler.PackageBuilder.reloadAll(PackageBuilder.java:683)
at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:641)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:266)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:458)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
Thanks& Regards
Saurabh
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saurabh maheshwari