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37 lines (33 loc) · 770 Bytes
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args.go
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37 lines (33 loc) · 770 Bytes
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package querybuilder
import (
"fmt"
"reflect"
"strings"
)
func unifyArgs(args ...interface{}) ([]interface{}, int) {
count := 0
var newArgs []interface{}
for _, arg := range args {
s := reflect.ValueOf(arg)
switch reflect.TypeOf(arg).Kind() {
case reflect.Slice:
count += s.Len()
for i := 0; i < s.Len(); i++ {
newArgs = append(newArgs, s.Index(i).Interface())
}
default:
count++
newArgs = append(newArgs, s.Interface())
}
}
return newArgs, count
}
func In(column string, args ...interface{}) (string, []interface{}) {
args, count := unifyArgs(args...)
if count == 0 {
return "", nil
}
values := strings.TrimSuffix(strings.Repeat("?,", count), ",")
query := fmt.Sprintf("%s IN (%s)", column, values)
return query, args
}