github.com/matrixorigin/matrixone@v0.7.0/pkg/vectorize/findinset/findinset.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 findinset
    16  
    17  import (
    18  	"strings"
    19  )
    20  
    21  func findInStrList(str, strlist string) uint64 {
    22  	for j, s := range strings.Split(strlist, ",") {
    23  		if s == str {
    24  			return uint64(j + 1)
    25  		}
    26  	}
    27  	return 0
    28  }
    29  
    30  func FindInSet(lv, rv []string, rs []uint64) []uint64 {
    31  	for i := range lv {
    32  		rs[i] = findInStrList(lv[i], rv[i])
    33  	}
    34  	return rs
    35  }
    36  
    37  func FindInSetWithLeftConst(lv string, rv []string, rs []uint64) []uint64 {
    38  	for i := range rv {
    39  		rs[i] = findInStrList(lv, rv[i])
    40  	}
    41  	return rs
    42  }
    43  
    44  func FindInSetWithRightConst(lv []string, rv string, rs []uint64) []uint64 {
    45  	for i := range lv {
    46  		rs[i] = findInStrList(lv[i], rv)
    47  	}
    48  	return rs
    49  }
    50  
    51  func FindInSetWithAllConst(lv, rv string, rs []uint64) []uint64 {
    52  	rs[0] = findInStrList(lv, rv)
    53  	return rs
    54  }