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*: replace compareDatum by compare, PR 11 #30465

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merged 2 commits into from
Dec 9, 2021
Merged

*: replace compareDatum by compare, PR 11 #30465

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501c316
done
wjhuang2016 Dec 7, 2021
531caf0
Merge branch 'master' into replace_datumcompare_11
ti-chi-bot Dec 9, 2021
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5 changes: 3 additions & 2 deletions expression/distsql_builtin.go
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ import (
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/codec"
"github.com/pingcap/tidb/util/collate"
"github.com/pingcap/tidb/util/mock"
"github.com/pingcap/tipb/go-tipb"
)
Expand All @@ -40,7 +41,7 @@ func PbTypeToFieldType(tp *tipb.FieldType) *types.FieldType {
Flen: int(tp.Flen),
Decimal: int(tp.Decimal),
Charset: tp.Charset,
Collate: protoToCollation(tp.Collate),
Collate: collate.ProtoToCollation(tp.Collate),
Elems: tp.Elems,
}
}
Expand Down Expand Up @@ -1216,7 +1217,7 @@ func convertUint(val []byte) (*Constant, error) {

func convertString(val []byte, tp *tipb.FieldType) (*Constant, error) {
var d types.Datum
d.SetBytesAsString(val, protoToCollation(tp.Collate), uint32(tp.Flen))
d.SetBytesAsString(val, collate.ProtoToCollation(tp.Collate), uint32(tp.Flen))
return &Constant{Value: d, RetType: types.NewFieldType(mysql.TypeVarString)}, nil
}

Expand Down
2 changes: 1 addition & 1 deletion expression/distsql_builtin_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -868,7 +868,7 @@ func toPBFieldType(ft *types.FieldType) *tipb.FieldType {
Flen: int32(ft.Flen),
Decimal: int32(ft.Decimal),
Charset: ft.Charset,
Collate: collationToProto(ft.Collate),
Collate: collate.CollationToProto(ft.Collate),
Elems: ft.Elems,
}
}
Expand Down
33 changes: 2 additions & 31 deletions expression/expr_to_pb.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,6 @@ import (
"github.com/pingcap/errors"
"github.com/pingcap/failpoint"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/parser/charset"
"github.com/pingcap/tidb/parser/mysql"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/types"
Expand Down Expand Up @@ -157,7 +156,7 @@ func ToPBFieldType(ft *types.FieldType) *tipb.FieldType {
Flen: int32(ft.Flen),
Decimal: int32(ft.Decimal),
Charset: ft.Charset,
Collate: collationToProto(ft.Collate),
Collate: collate.CollationToProto(ft.Collate),
Elems: ft.Elems,
}
}
Expand All @@ -170,39 +169,11 @@ func FieldTypeFromPB(ft *tipb.FieldType) *types.FieldType {
Flen: int(ft.Flen),
Decimal: int(ft.Decimal),
Charset: ft.Charset,
Collate: protoToCollation(ft.Collate),
Collate: collate.ProtoToCollation(ft.Collate),
Elems: ft.Elems,
}
}

func collationToProto(c string) int32 {
if coll, err := charset.GetCollationByName(c); err == nil {
return collate.RewriteNewCollationIDIfNeeded(int32(coll.ID))
}
v := collate.RewriteNewCollationIDIfNeeded(int32(mysql.DefaultCollationID))
logutil.BgLogger().Warn(
"Unable to get collation ID by name, use ID of the default collation instead",
zap.String("name", c),
zap.Int32("default collation ID", v),
zap.String("default collation", mysql.DefaultCollationName),
)
return v
}

func protoToCollation(c int32) string {
coll, err := charset.GetCollationByID(int(collate.RestoreCollationIDIfNeeded(c)))
if err == nil {
return coll.Name
}
logutil.BgLogger().Warn(
"Unable to get collation name from ID, use name of the default collation instead",
zap.Int32("id", c),
zap.Int("default collation ID", mysql.DefaultCollationID),
zap.String("default collation", mysql.DefaultCollationName),
)
return mysql.DefaultCollationName
}

func (pc PbConverter) columnToPBExpr(column *Column) *tipb.Expr {
if !pc.client.IsRequestTypeSupported(kv.ReqTypeSelect, int64(tipb.ExprType_ColumnRef)) {
return nil
Expand Down
7 changes: 3 additions & 4 deletions planner/core/point_get_plan.go
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@ import (
"github.com/pingcap/tidb/types"
driver "github.com/pingcap/tidb/types/parser_driver"
tidbutil "github.com/pingcap/tidb/util"
"github.com/pingcap/tidb/util/collate"
"github.com/pingcap/tidb/util/logutil"
"github.com/pingcap/tidb/util/math"
"github.com/pingcap/tidb/util/plancodec"
Expand Down Expand Up @@ -1213,8 +1214,7 @@ func getNameValuePairs(stmtCtx *stmtctx.StatementContext, tbl *model.TableInfo,
}
}
// The converted result must be same as original datum.
// Compare them based on the dVal's type.
cmp, err := dVal.CompareDatum(stmtCtx, &d)
cmp, err := dVal.Compare(stmtCtx, &d, collate.GetCollator(col.Collate))
if err != nil {
return nil, false
} else if cmp != 0 {
Expand All @@ -1235,8 +1235,7 @@ func getPointGetValue(stmtCtx *stmtctx.StatementContext, col *model.ColumnInfo,
return nil
}
// The converted result must be same as original datum.
// Compare them based on the dVal's type.
cmp, err := dVal.CompareDatum(stmtCtx, d)
cmp, err := dVal.Compare(stmtCtx, d, collate.GetCollator(col.Collate))
if err != nil || cmp != 0 {
return nil
}
Expand Down
2 changes: 1 addition & 1 deletion statistics/sample.go
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Original file line number Diff line number Diff line change
Expand Up @@ -78,7 +78,7 @@ func (s *sampleItemSorter) Len() int {

func (s *sampleItemSorter) Less(i, j int) bool {
var cmp int
cmp, s.err = s.items[i].Value.CompareDatum(s.sc, &s.items[j].Value)
cmp, s.err = s.items[i].Value.Compare(s.sc, &s.items[j].Value, collate.GetBinaryCollator())
if s.err != nil {
return true
}
Expand Down
5 changes: 3 additions & 2 deletions store/mockstore/mockcopr/topn.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ import (
"github.com/pingcap/errors"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/collate"
"github.com/pingcap/tipb/go-tipb"
)

Expand Down Expand Up @@ -49,7 +50,7 @@ func (t *topNSorter) Less(i, j int) bool {
v1 := t.rows[i].key[index]
v2 := t.rows[j].key[index]

ret, err := v1.CompareDatum(t.sc, &v2)
ret, err := v1.Compare(t.sc, &v2, collate.GetCollator(collate.ProtoToCollation(by.Expr.FieldType.Collate)))
if err != nil {
t.err = errors.Trace(err)
return true
Expand Down Expand Up @@ -98,7 +99,7 @@ func (t *topNHeap) Less(i, j int) bool {
v1 := t.rows[i].key[index]
v2 := t.rows[j].key[index]

ret, err := v1.CompareDatum(t.sc, &v2)
ret, err := v1.Compare(t.sc, &v2, collate.GetCollator(collate.ProtoToCollation(by.Expr.FieldType.Collate)))
if err != nil {
t.err = errors.Trace(err)
return true
Expand Down
5 changes: 3 additions & 2 deletions store/mockstore/unistore/cophandler/topn.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ import (
"github.com/pingcap/tidb/parser/mysql"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/collate"
tipb "github.com/pingcap/tipb/go-tipb"
)

Expand Down Expand Up @@ -51,7 +52,7 @@ func (t *topNSorter) Less(i, j int) bool {
v1 := t.rows[i].key[index]
v2 := t.rows[j].key[index]

ret, err := v1.CompareDatum(t.sc, &v2)
ret, err := v1.Compare(t.sc, &v2, collate.GetCollator(collate.ProtoToCollation(by.Expr.FieldType.Collate)))
if err != nil {
t.err = errors.Trace(err)
return true
Expand Down Expand Up @@ -105,7 +106,7 @@ func (t *topNHeap) Less(i, j int) bool {
if expression.FieldTypeFromPB(by.GetExpr().GetFieldType()).Tp == mysql.TypeEnum {
ret = types.CompareUint64(v1.GetUint64(), v2.GetUint64())
} else {
ret, err = v1.CompareDatum(t.sc, &v2)
ret, err = v1.Compare(t.sc, &v2, collate.GetCollator(collate.ProtoToCollation(by.Expr.FieldType.Collate)))
if err != nil {
t.err = errors.Trace(err)
return true
Expand Down
5 changes: 3 additions & 2 deletions testkit/trequire/trequire.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,13 +22,14 @@ import (

"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/collate"
"github.com/stretchr/testify/require"
)

// DatumEqual verifies that the actual value is equal to the expected value.
// DatumEqual verifies that the actual value is equal to the expected value. For string datum, they are compared by the binary collation.
func DatumEqual(t *testing.T, expected, actual types.Datum, msgAndArgs ...interface{}) {
sc := new(stmtctx.StatementContext)
res, err := actual.CompareDatum(sc, &expected)
res, err := actual.Compare(sc, &expected, collate.GetBinaryCollator())
require.NoError(t, err, msgAndArgs)
require.Zero(t, res, msgAndArgs)
}
30 changes: 30 additions & 0 deletions util/collate/collate.go
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Original file line number Diff line number Diff line change
Expand Up @@ -323,6 +323,36 @@ func IsBinCollation(collate string) bool {
collate == charset.CollationUTF8 || collate == charset.CollationUTF8MB4
}

// CollationToProto converts collation from string to int32(used by protocol).
func CollationToProto(c string) int32 {
if coll, err := charset.GetCollationByName(c); err == nil {
return RewriteNewCollationIDIfNeeded(int32(coll.ID))
}
v := RewriteNewCollationIDIfNeeded(int32(mysql.DefaultCollationID))
logutil.BgLogger().Warn(
"Unable to get collation ID by name, use ID of the default collation instead",
zap.String("name", c),
zap.Int32("default collation ID", v),
zap.String("default collation", mysql.DefaultCollationName),
)
return v
}

// ProtoToCollation converts collation from int32(used by protocol) to string.
func ProtoToCollation(c int32) string {
coll, err := charset.GetCollationByID(int(RestoreCollationIDIfNeeded(c)))
if err == nil {
return coll.Name
}
logutil.BgLogger().Warn(
"Unable to get collation name from ID, use name of the default collation instead",
zap.Int32("id", c),
zap.Int("default collation ID", mysql.DefaultCollationID),
zap.String("default collation", mysql.DefaultCollationName),
)
return mysql.DefaultCollationName
}

func init() {
newCollatorMap = make(map[string]Collator)
newCollatorIDMap = make(map[int]Collator)
Expand Down
3 changes: 2 additions & 1 deletion util/ranger/ranger.go
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@ import (
"github.com/pingcap/tidb/types"
driver "github.com/pingcap/tidb/types/parser_driver"
"github.com/pingcap/tidb/util/codec"
"github.com/pingcap/tidb/util/collate"
)

func validInterval(sctx sessionctx.Context, low, high *point) (bool, error) {
Expand Down Expand Up @@ -121,7 +122,7 @@ func convertPoint(sctx sessionctx.Context, point *point, tp *types.FieldType) (*
return point, errors.Trace(err)
}
}
valCmpCasted, err := point.value.CompareDatum(sc, &casted)
valCmpCasted, err := point.value.Compare(sc, &casted, collate.GetCollator(tp.Collate))
if err != nil {
return point, errors.Trace(err)
}
Expand Down