func newdriverRows(rs rset.Recordset) *driverRows {
r := &driverRows{
rs: rs,
done: make(chan int),
rows: make(chan interface{}, 500),
}
go func() {
err := io.EOF
if e := r.rs.Do(func(data []interface{}) (bool, error) {
vv, cloneErr := types.Clone(data)
if cloneErr != nil {
return false, errors.Trace(cloneErr)
}
select {
case r.rows <- vv:
return true, nil
case <-r.done:
return false, nil
}
}); e != nil {
err = e
}
select {
case r.rows <- err:
case <-r.done:
}
}()
return r
}
func (t *memTemp) Set(k, v []interface{}) (err error) {
vv, err := types.Clone(v)
if err != nil {
return err
}
t.tree.Set(append([]interface{}(nil), k...), vv.([]interface{}))
return
}
// execExecSelect implements `insert table select ... from ...`.
func (s *InsertValues) execSelect(t table.Table, cols []*column.Col, ctx context.Context) (rset.Recordset, error) {
r, err := s.Sel.Plan(ctx)
if err != nil {
return nil, errors.Trace(err)
}
defer r.Close()
if len(r.GetFields()) != len(cols) {
return nil, errors.Errorf("Column count %d doesn't match value count %d", len(cols), len(r.GetFields()))
}
var bufRecords [][]interface{}
var lastInsertIds []uint64
for {
var row *plan.Row
row, err = r.Next(ctx)
if err != nil {
return nil, errors.Trace(err)
}
if row == nil {
break
}
data0 := make([]interface{}, len(t.Cols()))
marked := make(map[int]struct{}, len(cols))
for i, d := range row.Data {
data0[cols[i].Offset] = d
marked[cols[i].Offset] = struct{}{}
}
if err = s.initDefaultValues(ctx, t, data0, marked); err != nil {
return nil, errors.Trace(err)
}
if err = column.CastValues(ctx, data0, cols); err != nil {
return nil, errors.Trace(err)
}
if err = column.CheckNotNull(t.Cols(), data0); err != nil {
return nil, errors.Trace(err)
}
var v interface{}
v, err = types.Clone(data0)
if err != nil {
return nil, errors.Trace(err)
}
bufRecords = append(bufRecords, v.([]interface{}))
lastInsertIds = append(lastInsertIds, variable.GetSessionVars(ctx).LastInsertID)
}
for i, r := range bufRecords {
variable.GetSessionVars(ctx).SetLastInsertID(lastInsertIds[i])
if _, err = t.AddRecord(ctx, r); err != nil {
return nil, errors.Trace(err)
}
}
return nil, nil
}
// execExecSelect implements `insert table select ... from ...`.
func (s *InsertIntoStmt) execSelect(t table.Table, cols []*column.Col, ctx context.Context) (_ rset.Recordset, err error) {
r, err := s.Sel.Plan(ctx)
if err != nil {
return nil, errors.Trace(err)
} else if len(r.GetFields()) != len(cols) {
return nil, errors.Errorf("Column count %d doesn't match value count %d", len(cols), len(r.GetFields()))
}
var bufRecords [][]interface{}
var lastInsertIds []uint64
err = r.Do(ctx, func(_ interface{}, data []interface{}) (more bool, err error) {
data0 := make([]interface{}, len(t.Cols()))
marked := make(map[int]struct{}, len(cols))
for i, d := range data {
data0[cols[i].Offset] = d
marked[cols[i].Offset] = struct{}{}
}
if err = s.initDefaultValues(ctx, t, t.Cols(), data0, marked); err != nil {
return false, errors.Trace(err)
}
if err = column.CastValues(ctx, data0, cols); err != nil {
return false, errors.Trace(err)
}
if err = column.CheckNotNull(t.Cols(), data0); err != nil {
return false, errors.Trace(err)
}
v, err := types.Clone(data0)
if err != nil {
return false, errors.Trace(err)
}
bufRecords = append(bufRecords, v.([]interface{}))
lastInsertIds = append(lastInsertIds, variable.GetSessionVars(ctx).LastInsertID)
return true, nil
})
if err != nil {
return nil, errors.Trace(err)
}
for i, r := range bufRecords {
variable.GetSessionVars(ctx).SetLastInsertID(lastInsertIds[i])
if _, err = t.AddRecord(ctx, r); err != nil {
return nil, errors.Trace(err)
}
}
return nil, nil
}
func newdriverRows(rs rset.Recordset) *driverRows {
r := &driverRows{
rs: rs,
done: make(chan int),
rows: make(chan interface{}, 500),
}
r.wg.Add(1)
go func() {
// TODO: We may change the whole implementation later, so here just using WaitGroup
// to solve issue https://github.com/pingcap/tidb/issues/57
// But if we forget close rows and do commit later, we may still meet this panic
// with very little probability.
defer r.wg.Done()
err := io.EOF
if e := r.rs.Do(func(data []interface{}) (bool, error) {
vv, cloneErr := types.Clone(data)
if cloneErr != nil {
return false, errors.Trace(cloneErr)
}
select {
case r.rows <- vv:
return true, nil
case <-r.done:
return false, nil
}
}); e != nil {
err = e
}
select {
case r.rows <- err:
case <-r.done:
}
}()
return r
}