Extend TransactionalMethodMustNotBeInvokedFromSameClassOrSubclass to inner types

[cl90]

Transactional methods should not be called from inner types of the declaring type (or sub-types), since these calls can usually not be handled by the bean proxy.

[cl90]

Unverified suggestion for the new rule implementation:

            MATCH
              (artifact:Artifact)-[:CONTAINS]->(callingType:Java:Type),
              (callingType)<-[:DECLARES*0..]-(:Java:Type)-[:EXTENDS|IMPLEMENTS*0..]->(:Java:Type)-[:DECLARES]->(calledMethod:Method:Spring:Transactional),
              (callingType)-[:DECLARES]->(callingMethod:Method)-[invokes:INVOKES]->(calledMethod)

[cl90]

See also jqassistant-plugin/jqassistant-jee-plugin#75

[cl90]

#108 (comment)
Does not work for calls from nested classes in sub-classes.