Add jdbc data access layer interface

[ztkmkoo]

Add jdbc data access layer interface. In nowaday dss system, we need impletment singleton DAO(data access object) and call it in service actor. It is so inefficient that add a data acess layer interface and user implement it, at last we run the data access actor in the background can work greate.

[ztkmkoo]

Sample service class diagram.

We inject the service when server start, and we service this as as actor(Maybe register in io.github.ztkmkoo.dss.core.actor.rest.DssRestMasterActor or new actor?). When we have to access to database, send message to this actor, and after success send back to the service actor

[JuHyun419]

@JuHyun419

[ztkmkoo]

@JuHyun419 Hi there, Is it on process? If not i wanna unassign this one.

[JuHyun419]

ok~ I got it.