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// Copyright 2017 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package expression
import (
"fmt"
. "github.com/pingcap/check"
"github.com/pingcap/parser/model"
"github.com/pingcap/parser/mysql"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/chunk"
"github.com/pingcap/tidb/util/mock"
)
func (s *testEvaluatorSuite) TestColumn(c *C) {
col := &Column{RetType: types.NewFieldType(mysql.TypeLonglong), UniqueID: 1}
c.Assert(col.Equal(nil, col), IsTrue)
c.Assert(col.Equal(nil, &Column{}), IsFalse)
c.Assert(col.IsCorrelated(), IsFalse)
c.Assert(col.Equal(nil, col.Decorrelate(nil)), IsTrue)
marshal, err := col.MarshalJSON()
c.Assert(err, IsNil)
c.Assert(marshal, DeepEquals, []byte{0x22, 0x43, 0x6f, 0x6c, 0x75, 0x6d, 0x6e, 0x23, 0x31, 0x22})
intDatum := types.NewIntDatum(1)
corCol := &CorrelatedColumn{Column: *col, Data: &intDatum}
invalidCorCol := &CorrelatedColumn{Column: Column{}}
schema := NewSchema(&Column{UniqueID: 1})
c.Assert(corCol.Equal(nil, corCol), IsTrue)
c.Assert(corCol.Equal(nil, invalidCorCol), IsFalse)
c.Assert(corCol.IsCorrelated(), IsTrue)
c.Assert(corCol.ConstItem(nil), IsFalse)
c.Assert(corCol.Decorrelate(schema).Equal(nil, col), IsTrue)
c.Assert(invalidCorCol.Decorrelate(schema).Equal(nil, invalidCorCol), IsTrue)
intCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeLonglong)},
Data: &intDatum}
intVal, isNull, err := intCorCol.EvalInt(s.ctx, chunk.Row{})
c.Assert(intVal, Equals, int64(1))
c.Assert(isNull, IsFalse)
c.Assert(err, IsNil)
realDatum := types.NewFloat64Datum(1.2)
realCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeDouble)},
Data: &realDatum}
realVal, isNull, err := realCorCol.EvalReal(s.ctx, chunk.Row{})
c.Assert(realVal, Equals, float64(1.2))
c.Assert(isNull, IsFalse)
c.Assert(err, IsNil)
decimalDatum := types.NewDecimalDatum(types.NewDecFromStringForTest("1.2"))
decimalCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeNewDecimal)},
Data: &decimalDatum}
decVal, isNull, err := decimalCorCol.EvalDecimal(s.ctx, chunk.Row{})
c.Assert(decVal.Compare(types.NewDecFromStringForTest("1.2")), Equals, 0)
c.Assert(isNull, IsFalse)
c.Assert(err, IsNil)
stringDatum := types.NewStringDatum("abc")
stringCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeVarchar)},
Data: &stringDatum}
strVal, isNull, err := stringCorCol.EvalString(s.ctx, chunk.Row{})
c.Assert(strVal, Equals, "abc")
c.Assert(isNull, IsFalse)
c.Assert(err, IsNil)
durationCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeDuration)},
Data: &durationDatum}
durationVal, isNull, err := durationCorCol.EvalDuration(s.ctx, chunk.Row{})
c.Assert(durationVal.Compare(duration), Equals, 0)
c.Assert(isNull, IsFalse)
c.Assert(err, IsNil)
timeDatum := types.NewTimeDatum(tm)
timeCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeDatetime)},
Data: &timeDatum}
timeVal, isNull, err := timeCorCol.EvalTime(s.ctx, chunk.Row{})
c.Assert(timeVal.Compare(tm), Equals, 0)
c.Assert(isNull, IsFalse)
c.Assert(err, IsNil)
}
func (s *testEvaluatorSuite) TestColumnHashCode(c *C) {
col1 := &Column{
UniqueID: 12,
}
c.Assert(col1.HashCode(nil), DeepEquals, []byte{0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc})
col2 := &Column{
UniqueID: 2,
}
c.Assert(col2.HashCode(nil), DeepEquals, []byte{0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2})
}
func (s *testEvaluatorSuite) TestColumn2Expr(c *C) {
cols := make([]*Column, 0, 5)
for i := 0; i < 5; i++ {
cols = append(cols, &Column{UniqueID: int64(i)})
}
exprs := Column2Exprs(cols)
for i := range exprs {
c.Assert(exprs[i].Equal(nil, cols[i]), IsTrue)
}
}
func (s *testEvaluatorSuite) TestColInfo2Col(c *C) {
col0, col1 := &Column{ID: 0}, &Column{ID: 1}
cols := []*Column{col0, col1}
colInfo := &model.ColumnInfo{ID: 0}
res := ColInfo2Col(cols, colInfo)
c.Assert(res.Equal(nil, col1), IsTrue)
colInfo.ID = 3
res = ColInfo2Col(cols, colInfo)
c.Assert(res, IsNil)
}
func (s *testEvaluatorSuite) TestIndexInfo2Cols(c *C) {
col0 := &Column{UniqueID: 0, ID: 0, RetType: types.NewFieldType(mysql.TypeLonglong)}
col1 := &Column{UniqueID: 1, ID: 1, RetType: types.NewFieldType(mysql.TypeLonglong)}
colInfo0 := &model.ColumnInfo{ID: 0, Name: model.NewCIStr("0")}
colInfo1 := &model.ColumnInfo{ID: 1, Name: model.NewCIStr("1")}
indexCol0, indexCol1 := &model.IndexColumn{Name: model.NewCIStr("0")}, &model.IndexColumn{Name: model.NewCIStr("1")}
indexInfo := &model.IndexInfo{Columns: []*model.IndexColumn{indexCol0, indexCol1}}
cols := []*Column{col0}
colInfos := []*model.ColumnInfo{colInfo0}
resCols, lengths := IndexInfo2PrefixCols(colInfos, cols, indexInfo)
c.Assert(len(resCols), Equals, 1)
c.Assert(len(lengths), Equals, 1)
c.Assert(resCols[0].Equal(nil, col0), IsTrue)
cols = []*Column{col1}
colInfos = []*model.ColumnInfo{colInfo1}
resCols, lengths = IndexInfo2PrefixCols(colInfos, cols, indexInfo)
c.Assert(len(resCols), Equals, 0)
c.Assert(len(lengths), Equals, 0)
cols = []*Column{col0, col1}
colInfos = []*model.ColumnInfo{colInfo0, colInfo1}
resCols, lengths = IndexInfo2PrefixCols(colInfos, cols, indexInfo)
c.Assert(len(resCols), Equals, 2)
c.Assert(len(lengths), Equals, 2)
c.Assert(resCols[0].Equal(nil, col0), IsTrue)
c.Assert(resCols[1].Equal(nil, col1), IsTrue)
}
func (s *testEvaluatorSuite) TestColHybird(c *C) {
ctx := mock.NewContext()
// bit
ft := types.NewFieldType(mysql.TypeBit)
col := &Column{RetType: ft, Index: 0}
input := chunk.New([]*types.FieldType{ft}, 1024, 1024)
for i := 0; i < 1024; i++ {
num, err := types.ParseBitStr(fmt.Sprintf("0b%b", i))
c.Assert(err, IsNil)
input.AppendBytes(0, num)
}
result, err := newBuffer(types.ETInt, 1024)
c.Assert(err, IsNil)
c.Assert(col.VecEvalInt(ctx, input, result), IsNil)
it := chunk.NewIterator4Chunk(input)
for row, i := it.Begin(), 0; row != it.End(); row, i = it.Next(), i+1 {
v, _, err := col.EvalInt(ctx, row)
c.Assert(err, IsNil)
c.Assert(v, Equals, result.GetInt64(i))
}
// use a container which has the different field type with bit
result, err = newBuffer(types.ETString, 1024)
c.Assert(err, IsNil)
c.Assert(col.VecEvalInt(ctx, input, result), IsNil)
for row, i := it.Begin(), 0; row != it.End(); row, i = it.Next(), i+1 {
v, _, err := col.EvalInt(ctx, row)
c.Assert(err, IsNil)
c.Assert(v, Equals, result.GetInt64(i))
}
// enum
ft = types.NewFieldType(mysql.TypeEnum)
col.RetType = ft
input = chunk.New([]*types.FieldType{ft}, 1024, 1024)
for i := 0; i < 1024; i++ {
input.AppendEnum(0, types.Enum{Name: fmt.Sprintf("%v", i), Value: uint64(i)})
}
result, err = newBuffer(types.ETString, 1024)
c.Assert(err, IsNil)
c.Assert(col.VecEvalString(ctx, input, result), IsNil)
it = chunk.NewIterator4Chunk(input)
for row, i := it.Begin(), 0; row != it.End(); row, i = it.Next(), i+1 {
v, _, err := col.EvalString(ctx, row)
c.Assert(err, IsNil)
c.Assert(v, Equals, result.GetString(i))
}
// set
ft = types.NewFieldType(mysql.TypeSet)
col.RetType = ft
input = chunk.New([]*types.FieldType{ft}, 1024, 1024)
for i := 0; i < 1024; i++ {
input.AppendSet(0, types.Set{Name: fmt.Sprintf("%v", i), Value: uint64(i)})
}
result, err = newBuffer(types.ETString, 1024)
c.Assert(err, IsNil)
c.Assert(col.VecEvalString(ctx, input, result), IsNil)
it = chunk.NewIterator4Chunk(input)
for row, i := it.Begin(), 0; row != it.End(); row, i = it.Next(), i+1 {
v, _, err := col.EvalString(ctx, row)
c.Assert(err, IsNil)
c.Assert(v, Equals, result.GetString(i))
}
}