AVSearchSortBuilder Class Reference
| Inherits from | NSObject |
|---|---|
| Declared in | AVSearchSortBuilder.h |
+ newBuilder
新建 AVSearchSortBuilder 实例
+ (instancetype)newBuilderReturn Value
AVSearchSortBuilder 实例
Discussion
新建 AVSearchSortBuilder 实例
Declared In
AVSearchSortBuilder.h
– orderByAscending:withMode:andMissing:
按照key升序排序
- (void)orderByAscending:(NSString *)key withMode:(NSString *)mode andMissing:(NSString *)missingParameters
key |
排序的key |
|---|---|
mode |
数组或者多值字段的排序模式，min表示取最小值，max取最大值，sum取综合，avg取平均值，默认值是avg |
missing |
当搜索匹配的文档没有排序的key的时候，设置本选项决定文档放在开头还是末尾，取值是"last"或者"first"，默认是"last"表示在末尾 |
Discussion
按照key升序排序
Declared In
AVSearchSortBuilder.h
– orderByAscending:withMode:
- (void)orderByAscending:(NSString *)key withMode:(NSString *)modeDeclared In
AVSearchSortBuilder.h
– orderByDescending:withMode:andMissing:
按照key降序排序
- (void)orderByDescending:(NSString *)key withMode:(NSString *)mode andMissing:(NSString *)missingParameters
key |
排序的key |
|---|---|
mode |
数组或者多值字段的排序模式，min表示取最小值，max取最大值，sum取综合，avg取平均值，默认值是avg。 |
missing |
当搜索匹配的文档没有排序的key的时候，设置本选项决定文档放在开头还是末尾，取值是"last"或者"first"，默认是"last"表示在末尾。 |
Discussion
按照key降序排序
Declared In
AVSearchSortBuilder.h
– orderByDescending:withMode:
- (void)orderByDescending:(NSString *)key withMode:(NSString *)modeDeclared In
AVSearchSortBuilder.h
– whereNear:point:inOrder:withMode:andUnit:
按照地理位置信息远近排序,key对应的字段类型必须是GeoPoint。
- (void)whereNear:(NSString *)key point:(AVGeoPoint *)point inOrder:(NSString *)order withMode:(NSString *)mode andUnit:(NSString *)unitParameters
key |
排序的字段key |
|---|---|
point |
GeoPoint经纬度对象 |
order |
排序顺序，升序"asc"，降序"desc"，默认升序，也就是从近到远。 |
mode |
数组或者多值字段的排序模式，min表示取最小值，max取最大值，avg取平均值，默认值是avg。 |
unit |
距离单位，"m"表示米，"cm"表示厘米，"mm"表示毫米，"km"表示公里，"mi"表示英里，"in"表示英寸，"yd"表示英亩，默认"km"。 |
Discussion
按照地理位置信息远近排序,key对应的字段类型必须是GeoPoint。
Declared In
AVSearchSortBuilder.h
– whereNear:point:inOrder:
whereNear:point:inOrder:withMode:andUnit
- (void)whereNear:(NSString *)key point:(AVGeoPoint *)point inOrder:(NSString *)orderDeclared In
AVSearchSortBuilder.h
– whereNear:point:
whereNear:point:inOrder:withMode:andUnit
- (void)whereNear:(NSString *)key point:(AVGeoPoint *)pointDeclared In
AVSearchSortBuilder.h