Hi, Im runnung test cases in Spring Drools 5.2M1 and I have this exception: Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ksession2': Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'knowledgeAgent' of bean class [org.drools.container.spring.beans.StatefulKnowledgeSessionBeanFactory]: Bean property 'knowledgeAgent' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter? it happens with testAgents method If you change the source code located in the drools-spring component in class org.drools.container.spring.namespace.KnowledgeSessionDefinitionParser.java: // find any kagent's for the current kbase and assign for ( String beanName : parserContext.getRegistry().getBeanDefinitionNames() ) { BeanDefinition def = parserContext.getRegistry().getBeanDefinition( beanName ); if ( KnowledgeAgentBeanFactory.class.getName().equals( def.getBeanClassName() ) ) { PropertyValue pvalue = def.getPropertyValues().getPropertyValue( "kbase" ); RuntimeBeanReference tbf = (RuntimeBeanReference) pvalue.getValue(); if ( kbase.equals( tbf.getBeanName() ) ) { factory.addPropertyValue( "knowledgeAgent", new RuntimeBeanReference( beanName ) ); } } } modifying: if ( kbase.equals( tbf.getBeanName() ) && "stateless".equals( sessionType ) ) it works, becasue only stateless sessions have knowledgeAgent property. is It Correct? -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/spring-drools-api-exc... Sent from the Drools - User mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

I tested your suggestion, and works fine, but if I define < drools : kagent > element before that < drools : ksession / > and < drools : kbase / >, the exception persist, It looks like the spring beans declaration order is relevant. Is it correct? -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/spring-drools-api-exc... Sent from the Drools - User mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users