[rules-users] Error creating shadow fact for object

[dileep_sivaraman]

I am using drools 3.1 MI

I have got a class Message which contains an inner class ProcessRuleDTO
When I try to assert the inner class object directly into memory it gives a
shadow fact error.

The Code Snippet :

ProcessRuleDTO processRuleDTO=message.new ProcessRuleDTO();
workingMemory.assertObject( processRuleDTO );

Error :

org.drools.RuntimeDroolsException: Error creating shadow fact for object:
com..components.Message$ProcessRuleDTO at 75e4fc
	at org.drools.base.ClassObjectType.getShadow(ClassObjectType.java:125)
	at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:148)
	at org.drools.reteoo.Rete.assertObject(Rete.java:121)
	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:196)
	at
org.drools.reteoo.ReteooWorkingMemory.doAssertObject(ReteooWorkingMemory.java:68)
	at
org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemory.java:724)
	at
org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemory.java:543)
	at Example.HelloWorldExample.main(HelloWorldExample.java:57)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at org.drools.base.ClassObjectType.getShadow(ClassObjectType.java:123)
	... 7 more
Caused by: java.lang.NoSuchMethodError:
com.components.Message$ProcessRuleDTO: method <init>()V not found
	at com.components.Message$ProcessRuleDTOShadowProxy.<init>(Unknown Source)
	... 12 more

Can we or not assert an inner class directly in drools?

Thanks
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