github.com/matrixorigin/matrixone@v0.7.0/pkg/sql/plan/function/builtin/unary/year.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/nulls"
    19  	"github.com/matrixorigin/matrixone/pkg/container/types"
    20  	"github.com/matrixorigin/matrixone/pkg/container/vector"
    21  	"github.com/matrixorigin/matrixone/pkg/vm/process"
    22  )
    23  
    24  func DateToYear(vectors []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    25  	inputVector := vectors[0]
    26  	resultType := types.Type{Oid: types.T_int64, Size: 8}
    27  	inputValues := vector.MustTCols[types.Date](inputVector)
    28  	if inputVector.IsScalar() {
    29  		if inputVector.ConstVectorIsNull() {
    30  			return proc.AllocScalarNullVector(resultType), nil
    31  		}
    32  		resultValues := make([]int64, 1)
    33  		DateToYearPlan2(inputValues, resultValues)
    34  		return vector.NewConstFixed(resultType, 1, resultValues[0], proc.Mp()), nil
    35  	} else {
    36  		resultVector, err := proc.AllocVectorOfRows(resultType, int64(len(inputValues)), inputVector.Nsp)
    37  		if err != nil {
    38  			return nil, err
    39  		}
    40  		resultValues := vector.MustTCols[int64](resultVector)
    41  		DateToYearPlan2(inputValues, resultValues)
    42  		// resultValues2 := make([]int64, len(resultValues))
    43  		// for i, x := range resultValues {
    44  		// 	resultValues2[i] = int64(x)
    45  		// }
    46  		return resultVector, nil
    47  	}
    48  }
    49  
    50  func DatetimeToYear(vectors []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    51  	inputVector := vectors[0]
    52  	resultType := types.Type{Oid: types.T_int64, Size: 8}
    53  	inputValues := vector.MustTCols[types.Datetime](inputVector)
    54  	if inputVector.IsScalar() {
    55  		if inputVector.ConstVectorIsNull() {
    56  			return proc.AllocScalarNullVector(resultType), nil
    57  		}
    58  		resultVector := vector.NewConst(resultType, 1)
    59  		resultValues := make([]int64, 1)
    60  		DatetimeToYearPlan2(inputValues, resultValues)
    61  		vector.SetCol(resultVector, resultValues)
    62  		return resultVector, nil
    63  	} else {
    64  		resultVector, err := proc.AllocVectorOfRows(resultType, int64(len(inputValues)), inputVector.Nsp)
    65  		if err != nil {
    66  			return nil, err
    67  		}
    68  		resultValues := vector.MustTCols[int64](resultVector)
    69  		DatetimeToYearPlan2(inputValues, resultValues)
    70  		return resultVector, nil
    71  	}
    72  }
    73  
    74  func DateStringToYear(vectors []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    75  	inputVector := vectors[0]
    76  	resultType := types.Type{Oid: types.T_int64, Size: 8}
    77  	inputValues := vector.MustStrCols(inputVector)
    78  	if inputVector.IsConst() {
    79  		if inputVector.ConstVectorIsNull() {
    80  			return proc.AllocScalarNullVector(resultType), nil
    81  		}
    82  		resultValues := make([]int64, 1)
    83  		DateStringToYearPlan2(inputValues, nil, resultValues)
    84  		return vector.NewConstFixed(resultType, 1, resultValues[0], proc.Mp()), nil
    85  	} else {
    86  		resultVector, err := proc.AllocVectorOfRows(resultType, int64(len(inputValues)), inputVector.Nsp)
    87  		if err != nil {
    88  			return nil, err
    89  		}
    90  		resultValues := vector.MustTCols[int64](resultVector)
    91  		DateStringToYearPlan2(inputValues, resultVector.Nsp, resultValues)
    92  		return resultVector, nil
    93  	}
    94  }
    95  
    96  func DateToYearPlan2(xs []types.Date, rs []int64) []int64 {
    97  	for i, x := range xs {
    98  		rs[i] = int64(x.Year())
    99  	}
   100  	return rs
   101  }
   102  
   103  func DatetimeToYearPlan2(xs []types.Datetime, rs []int64) []int64 {
   104  	for i, x := range xs {
   105  		rs[i] = int64(x.Year())
   106  	}
   107  	return rs
   108  }
   109  
   110  func DateStringToYearPlan2(xs []string, ns *nulls.Nulls, rs []int64) []int64 {
   111  	for i, str := range xs {
   112  		d, e := types.ParseDateCast(str)
   113  		if e != nil {
   114  			panic(e)
   115  		}
   116  		rs[i] = int64(d.Year())
   117  	}
   118  	return rs
   119  }