github.com/matrixorigin/matrixone@v0.7.0/pkg/vectorize/month/month.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 month
    16  
    17  import (
    18  	"github.com/matrixorigin/matrixone/pkg/container/nulls"
    19  	"github.com/matrixorigin/matrixone/pkg/container/types"
    20  )
    21  
    22  func DateToMonth(xs []types.Date, rs []uint8) []uint8 {
    23  	for i, x := range xs {
    24  		rs[i] = x.Month()
    25  	}
    26  	return rs
    27  }
    28  
    29  func DatetimeToMonth(xs []types.Datetime, rs []uint8) []uint8 {
    30  	for i, x := range xs {
    31  		rs[i] = x.Month()
    32  	}
    33  	return rs
    34  }
    35  
    36  func DateStringToMonth(xs []string, ns *nulls.Nulls, rs []uint8) []uint8 {
    37  	for i, str := range xs {
    38  		d, e := types.ParseDateCast(str)
    39  		if e != nil {
    40  			// XXX FUBAR should raise instead of intruducting nulls.
    41  			// set null
    42  			nulls.Add(ns, uint64(i))
    43  			rs[i] = 0
    44  			continue
    45  		}
    46  		rs[i] = d.Month()
    47  	}
    48  	return rs
    49  }