本文整理匯總了Golang中github.com/concourse/atc/db.Conn.Begin方法的典型用法代碼示例。如果您正苦於以下問題:Golang Conn.Begin方法的具體用法?Golang Conn.Begin怎麽用?Golang Conn.Begin使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類github.com/concourse/atc/db.Conn
的用法示例。
在下文中一共展示了Conn.Begin方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1:
Describe("query counting", func() {
It("increments the global (;_;) counter", func() {
_, err := countingConn.Query("SELECT $1::int", 1)
Expect(err).NotTo(HaveOccurred())
Expect(metric.DatabaseQueries.Max()).To(Equal(1))
_, err = countingConn.Exec("SELECT $1::int", 1)
Expect(err).NotTo(HaveOccurred())
Expect(metric.DatabaseQueries.Max()).To(Equal(2))
countingConn.QueryRow("SELECT $1::int", 1)
Expect(metric.DatabaseQueries.Max()).To(Equal(3))
By("working in transactions")
underlyingTx := &fakes.FakeTx{}
underlyingConn.BeginReturns(underlyingTx, nil)
tx, err := countingConn.Begin()
Expect(err).NotTo(HaveOccurred())
_, err = tx.Query("SELECT $1::int", 1)
Expect(err).NotTo(HaveOccurred())
Expect(metric.DatabaseQueries.Max()).To(Equal(4))
})
})
})