Issue

Trying to create a transaction decorated bean using a Factory class in blueprint results in

org.osgi.service.blueprint.container.ComponentDefinitionException: Unable to find a matching factory method
createBean on class com.mycompany.BeanFactory for arguments 
[org.apache.aries.blueprint.container.BeanRecipe$UnwrapperedBeanHolder@2ae73efd] when instanciating bean extBean

The blueprint definition would be similar to

<bean id="factoryBean" class="com.mycompany.BeanFactory"/>
<bean id="simpleBean" class="com.mycompany.SimpleBean">
  <tx:transaction method="*" value="Required" />
</bean>
<bean id="extBean" factory-ref="factoryBean" factory-method="createBean">
  <argument ref="simpleBean"/>
</bean>