/
sort_field.go
87 lines (80 loc) · 1.98 KB
/
sort_field.go
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package search
import (
"github.com/aliyun/aliyun-tablestore-go-sdk/tablestore/otsprotocol"
)
const (
FirstWhenMissing = "_first"
LastWhenMissing = "_last"
)
type NestedFilter struct {
Path string
Filter Query
}
func (f *NestedFilter) ProtoBuffer() (*otsprotocol.NestedFilter, error) {
pbF := &otsprotocol.NestedFilter{
Path: &f.Path,
}
pbQ, err := f.Filter.ProtoBuffer()
if err != nil {
return nil, err
}
pbF.Filter = pbQ
return pbF, err
}
type FieldSort struct {
FieldName string
Order *SortOrder
Mode *SortMode
NestedFilter *NestedFilter
MissingValue interface{} // 当排序的字段某些行没有填充值时,排序行为支持三种方式:1、设置为FirstWhenMissing,当排序字段值缺省时候排在最前面;2、设置为LastWhenMissing,当排序字段值缺省时候排在最后面;3、自定义值,当排序字段值缺省时候使用指定的值进行排序。
MissingField *string
}
func NewFieldSort(fieldName string, order SortOrder) *FieldSort {
return &FieldSort{
FieldName: fieldName,
Order: order.Enum(),
}
}
func (s *FieldSort) ProtoBuffer() (*otsprotocol.Sorter, error) {
pbFieldSort := &otsprotocol.FieldSort{
FieldName: &s.FieldName,
}
if s.Order != nil {
pbOrder, err := s.Order.ProtoBuffer()
if err != nil {
return nil, err
}
pbFieldSort.Order = pbOrder
}
if s.Mode != nil {
pbMode, err := s.Mode.ProtoBuffer()
if err != nil {
return nil, err
}
if pbMode != nil {
pbFieldSort.Mode = pbMode
}
}
if s.NestedFilter != nil {
pbFilter, err := s.NestedFilter.ProtoBuffer()
if err != nil {
return nil, err
}
pbFieldSort.NestedFilter = pbFilter
}
if s.MissingField != nil {
pbFieldSort.MissingField = s.MissingField
}
//missingValue
if s.MissingValue != nil {
vt, err := ToVariantValue(s.MissingValue)
if err != nil {
return nil, err
}
pbFieldSort.MissingValue = []byte(vt)
}
pbSorter := &otsprotocol.Sorter{
FieldSort: pbFieldSort,
}
return pbSorter, nil
}