Gorm Source Code
Gorm Source Code 1. sql.DB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 // driverConn wraps a driver.Conn with a mutex, to // be held during all calls into the Conn. (including any calls onto // interfaces returned via that Conn, such as calls on Tx, Stmt, // Result, Rows) type driverConn struct { db *DB createdAt time.Time sync.Mutex // guards following ci driver.Conn needReset bool // The connection session should be reset before use if true. closed bool finalClosed bool // ci.Close has been called openStmt map[*driverStmt]bool // guarded by db.mu inUse bool returnedAt time.Time // Time the connection was created or returned. onPut []func() // code (with db.mu held) run when conn is next returned dbmuClosed bool // same as closed, but guarded by db.mu, for removeClosedStmtLocked } sql.DB数据结构对数据库做了一层简单的抽象，但是需要明确的是：sql.DB不是一个连接，也不是映射到任何DataBase或者是Schema的概念。 ...
