本文整理匯總了Golang中github.com/pingcap/tidb/kv.Transaction.Set方法的典型用法代碼示例。如果您正苦於以下問題：Golang Transaction.Set方法的具體用法？Golang Transaction.Set怎麽用？Golang Transaction.Set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/pingcap/tidb/kv.Transaction的用法示例。
在下文中一共展示了Transaction.Set方法的7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: lockRow
func lockRow(txn kv.Transaction, t table.Table, h int64) error {
// Get row lock key
lockKey := t.RecordKey(h, nil)
// set row lock key to current txn
err := txn.Set(lockKey, []byte(txn.String()))
return errors.Trace(err)
}示例2: setRow
func setRow(txn kv.Transaction, handle int64, tbl *simpleTableInfo, gen genValueFunc) error {
rowKey := tablecodec.EncodeRowKey(tbl.tID, codec.EncodeInt(nil, handle))
columnValues := gen(handle, tbl)
value, err := tablecodec.EncodeRow(columnValues, tbl.cIDs)
if err != nil {
return errors.Trace(err)
}
err = txn.Set(rowKey, value)
if err != nil {
return errors.Trace(err)
}
for i, idxCol := range tbl.indices {
idxVal := columnValues[idxCol]
encoded, err := codec.EncodeKey(nil, idxVal, types.NewDatum(handle))
if err != nil {
return errors.Trace(err)
}
idxKey := tablecodec.EncodeIndexSeekKey(tbl.tID, tbl.iIDs[i], encoded)
err = txn.Set(idxKey, []byte{0})
if err != nil {
return errors.Trace(err)
}
}
return nil
}示例3: insertData
func insertData(c *C, txn kv.Transaction) {
for i := startIndex; i < testCount; i++ {
val := encodeInt(i * indexStep)
err := txn.Set(val, val)
c.Assert(err, IsNil)
}
}示例4: setColValue
func setColValue(c *C, txn kv.Transaction, key kv.Key, v types.Datum) {
row := []types.Datum{v, {}}
colIDs := []int64{2, 3}
value, err := tablecodec.EncodeRow(row, colIDs)
c.Assert(err, IsNil)
err = txn.Set(key, value)
c.Assert(err, IsNil)
}示例5: SetColValue
// SetColValue implements table.Table SetColValue interface.
func (t *Table) SetColValue(txn kv.Transaction, key []byte, data interface{}) error {
v, err := t.EncodeValue(data)
if err != nil {
return errors.Trace(err)
}
if err := txn.Set(key, v); err != nil {
return errors.Trace(err)
}
return nil
}示例6: writeSchemaInfo
func (d *ddl) writeSchemaInfo(info *model.DBInfo, txn kv.Transaction) error {
var b []byte
b, err := json.Marshal(info)
if err != nil {
return errors.Trace(err)
}
key := []byte(meta.DBMetaKey(info.ID))
if err := txn.LockKeys(key); err != nil {
return errors.Trace(err)
}
txn.Set(key, b)
log.Warn("save schema", string(b))
return errors.Trace(err)
}示例7: backfillColumnInTxn
// backfillColumnInTxn deals with a part of backfilling column data in a Transaction.
// This part of the column data rows is defaultSmallBatchCnt.
func (d *ddl) backfillColumnInTxn(t table.Table, colID int64, handles []int64, colMap map[int64]*types.FieldType,
defaultVal types.Datum, txn kv.Transaction) (int64, error) {
nextHandle := handles[0]
for _, handle := range handles {
log.Debug("[ddl] backfill column...", handle)
rowKey := t.RecordKey(handle)
rowVal, err := txn.Get(rowKey)
if terror.ErrorEqual(err, kv.ErrNotExist) {
// If row doesn't exist, skip it.
continue
}
if err != nil {
return 0, errors.Trace(err)
}
rowColumns, err := tablecodec.DecodeRow(rowVal, colMap)
if err != nil {
return 0, errors.Trace(err)
}
if _, ok := rowColumns[colID]; ok {
// The column is already added by update or insert statement, skip it.
continue
}
newColumnIDs := make([]int64, 0, len(rowColumns)+1)
newRow := make([]types.Datum, 0, len(rowColumns)+1)
for colID, val := range rowColumns {
newColumnIDs = append(newColumnIDs, colID)
newRow = append(newRow, val)
}
newColumnIDs = append(newColumnIDs, colID)
newRow = append(newRow, defaultVal)
newRowVal, err := tablecodec.EncodeRow(newRow, newColumnIDs)
if err != nil {
return 0, errors.Trace(err)
}
err = txn.Set(rowKey, newRowVal)
if err != nil {
return 0, errors.Trace(err)
}
}
return nextHandle, nil
}