github.com/matrixorigin/matrixone@v0.7.0/pkg/sql/plan/function/builtin/unary/day.go (about)

     1  // Copyright 2022 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package unary
    16  
    17  import (
    18  	"github.com/matrixorigin/matrixone/pkg/container/types"
    19  	"github.com/matrixorigin/matrixone/pkg/container/vector"
    20  	"github.com/matrixorigin/matrixone/pkg/vectorize/day"
    21  	"github.com/matrixorigin/matrixone/pkg/vm/process"
    22  )
    23  
    24  func DateToDay(vectors []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    25  	inputVector := vectors[0]
    26  	resultType := types.Type{Oid: types.T_uint8, Size: 1}
    27  	inputValues := vector.MustTCols[types.Date](inputVector)
    28  	if inputVector.IsScalar() {
    29  		if inputVector.IsScalarNull() {
    30  			return proc.AllocScalarNullVector(resultType), nil
    31  		}
    32  		resultVector := vector.NewConst(resultType, 1)
    33  		resultValues := make([]uint8, 1)
    34  		vector.SetCol(resultVector, day.DateToDay(inputValues, resultValues))
    35  		return resultVector, nil
    36  	} else {
    37  		resultVector, err := proc.AllocVectorOfRows(resultType, int64(len(inputValues)), inputVector.Nsp)
    38  		if err != nil {
    39  			return nil, err
    40  		}
    41  		resultValues := vector.MustTCols[uint8](resultVector)
    42  		day.DateToDay(inputValues, resultValues)
    43  		return resultVector, nil
    44  	}
    45  }
    46  
    47  func DatetimeToDay(vectors []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    48  	inputVector := vectors[0]
    49  	resultType := types.Type{Oid: types.T_uint8, Size: 1}
    50  	inputValues := vector.MustTCols[types.Datetime](inputVector)
    51  	if inputVector.IsScalar() {
    52  		if inputVector.IsScalarNull() {
    53  			return proc.AllocScalarNullVector(resultType), nil
    54  		}
    55  		resultVector := vector.NewConst(resultType, 1)
    56  		resultValues := make([]uint8, 1)
    57  		vector.SetCol(resultVector, day.DatetimeToDay(inputValues, resultValues))
    58  		return resultVector, nil
    59  	} else {
    60  		resultVector, err := proc.AllocVectorOfRows(resultType, int64(len(inputValues)), inputVector.Nsp)
    61  		if err != nil {
    62  			return nil, err
    63  		}
    64  		resultValues := vector.MustTCols[uint8](resultVector)
    65  		day.DatetimeToDay(inputValues, resultValues)
    66  		return resultVector, nil
    67  	}
    68  }