DbPipeline class
聚合语句处理
- Inheritance
-
- Object
- DbBaseModel
- DbPipeline
Constructors
-
DbPipeline({DbFilter? $match, Set<
DbQueryField> ? $group, String? $count, int? $skip, int? $limit, Set<DbQueryField> ? $sort})
Properties
- $count → String?
-
计数字段
final
-
$group
→ Set<
DbQueryField> ? -
分组操作
final
- $limit → int?
-
返回数量
final
- $match → DbFilter?
-
过滤操作
final
- $skip → int?
-
跳过数量
final
-
$sort
→ Set<
DbQueryField> ? -
排序参数
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
buildTarget(
) → dynamic -
使用本实例字段成员的值生成包装的目标类实例
inherited
-
compile(
) → Map< String, Object> -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toJson(
) → Map< String, dynamic> -
转换为基本数据类型的Map。转换结果可以直接使用jsonEncode进行序列化,可以直接保存到mongo数据库
override
-
toKValues(
) → Map< String, dynamic> -
转换为用字符串key读取字段值的Map
inherited
-
toString(
) → String -
jsonEncode(this)抛出的异常被吃掉了,所以需要写成jsonEncode(toJson())
inherited
-
updateByJson(
Map< String, dynamic> map) → void -
通过基本数据类型的Map来更新字段。来源
map
可以直接使用jsonEncode进行序列化,可以直接保存到mongo数据库inherited -
updateByKValues(
Map< String, dynamic> map) → void -
通过用字符串key读取字段值的Map来更新字段
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited