The sence about Transaction in Spring
Some sence are strange in our project. I should make note.Has following methods:ClassA.methodA -- no tranactionClassA.methodB -- tranaction REQUIRESClassC.methodC -- tranaction REQUIRESClassC.methodD -- tranaction REQUIRES_NEW1. 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 ma