The sence about Transaction in Spring

Some sence are strange in our project. I should make note.

Has following methods:

ClassA.methodA -- no tranaction

ClassA.methodB -- tranaction REQUIRES

ClassC.methodC -- tranaction REQUIRES

ClassC.methodD -- tranaction REQUIRES_NEW

1. When calls methodB from methodA. the tranaction doesn't work.

2When calls methodB from methodC the tranaction works.

3 When calls methodD from methodB the requires_new doesn't work. it doen't use the new tranaction.

4 the requires_new will create the new session. please make sure you need to use requires_new.

Are the sences above the same are you think?

[@more@]