本文整理匯總了Golang中github.com/conseweb/bolt.DB.Update方法的典型用法代碼示例。如果您正苦於以下問題：Golang DB.Update方法的具體用法？Golang DB.Update怎麽用？Golang DB.Update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/conseweb/bolt.DB的用法示例。
在下文中一共展示了DB.Update方法的3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: runWritesWithSource
func (cmd *BenchCommand) runWritesWithSource(db *bolt.DB, options *BenchOptions, results *BenchResults, keySource func() uint32) error {
results.WriteOps = options.Iterations
for i := 0; i < options.Iterations; i += options.BatchSize {
if err := db.Update(func(tx *bolt.Tx) error {
b, _ := tx.CreateBucketIfNotExists(benchBucketName)
b.FillPercent = options.FillPercent
for j := 0; j < options.BatchSize; j++ {
key := make([]byte, options.KeySize)
value := make([]byte, options.ValueSize)
// Write key as uint32.
binary.BigEndian.PutUint32(key, keySource())
// Insert key/value.
if err := b.Put(key, value); err != nil {
return err
}
}
return nil
}); err != nil {
return err
}
}
return nil
}示例2: TestDB_Update_Closed
// Ensure a closed database returns an error while running a transaction block
func TestDB_Update_Closed(t *testing.T) {
var db bolt.DB
err := db.Update(func(tx *bolt.Tx) error {
tx.CreateBucket([]byte("widgets"))
return nil
})
equals(t, err, bolt.ErrDatabaseNotOpen)
}示例3: runWritesNestedWithSource
func (cmd *BenchCommand) runWritesNestedWithSource(db *bolt.DB, options *BenchOptions, results *BenchResults, keySource func() uint32) error {
results.WriteOps = options.Iterations
for i := 0; i < options.Iterations; i += options.BatchSize {
if err := db.Update(func(tx *bolt.Tx) error {
top, err := tx.CreateBucketIfNotExists(benchBucketName)
if err != nil {
return err
}
top.FillPercent = options.FillPercent
// Create bucket key.
name := make([]byte, options.KeySize)
binary.BigEndian.PutUint32(name, keySource())
// Create bucket.
b, err := top.CreateBucketIfNotExists(name)
if err != nil {
return err
}
b.FillPercent = options.FillPercent
for j := 0; j < options.BatchSize; j++ {
var key = make([]byte, options.KeySize)
var value = make([]byte, options.ValueSize)
// Generate key as uint32.
binary.BigEndian.PutUint32(key, keySource())
// Insert value into subbucket.
if err := b.Put(key, value); err != nil {
return err
}
}
return nil
}); err != nil {
return err
}
}
return nil
}