/
delete.go
82 lines (69 loc) · 1.87 KB
/
delete.go
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package executor
import (
"context"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/chunk"
"github.com/zhihu/zetta/tablestore/table"
)
type UpdateExec struct {
baseExecutor
tbl table.Table
values map[int64]types.Datum
}
func (e *UpdateExec) Open(ctx context.Context) error {
return e.children[0].Open(ctx)
}
func (e *UpdateExec) Close() error {
return e.children[0].Close()
}
func (e *UpdateExec) Next(ctx context.Context, req *chunk.Chunk) error {
req.GrowAndReset(e.maxChunkSize)
chk := NewFirstChunk(e.children[0])
err := Next(ctx, e.children[0], chk)
if err != nil {
return err
}
fts := retTypes(e.children[0])
chunkIter := chunk.NewIterator4Chunk(chk)
rowIter := chunkIter.Begin()
for ; rowIter != chunkIter.End(); rowIter = chunkIter.Next() {
rowDatums := rowIter.GetDatumRow(fts)
if err = e.tbl.UpdateRecord(e.ctx, rowDatums, e.values); err != nil {
return err
}
e.ctx.GetSessionVars().StmtCtx.AddAffectedRows(1)
}
return nil
}
type DeleteExec struct {
baseExecutor
tbl table.Table
}
func (e *DeleteExec) Open(ctx context.Context) error {
return e.children[0].Open(ctx)
}
func (e *DeleteExec) Close() error {
return e.children[0].Close()
}
func (e *DeleteExec) deleteOneRow(ctx context.Context, row []types.Datum) error {
return e.tbl.RemoveRecord(e.ctx, row)
}
func (e *DeleteExec) Next(ctx context.Context, req *chunk.Chunk) error {
req.GrowAndReset(e.maxChunkSize)
chk := NewFirstChunk(e.children[0])
err := Next(ctx, e.children[0], chk)
if err != nil {
return err
}
fts := retTypes(e.children[0])
chunkIter := chunk.NewIterator4Chunk(chk)
rowIter := chunkIter.Begin()
for ; rowIter != chunkIter.End(); rowIter = chunkIter.Next() {
rowDatums := rowIter.GetDatumRow(fts)
if err = e.tbl.RemoveRecord(e.ctx, rowDatums); err != nil {
return err
}
e.ctx.GetSessionVars().StmtCtx.AddAffectedRows(1)
}
return nil
}