Struct QueryPage 

pub struct QueryPage {
    pub page: u64,
    pub size: u32,
}

分页对象

Fields

page: u64

当前页码 1 开始计数

size: u32

每页大小

Implementations

impl QueryPage

pub fn empty<T>(&self) -> PageData<T>

空结果

pub fn check(&self, max_page_size: u32) -> Result<(), QueryPageError>

检查分页选项是否有效

pub fn from_data<T>(&self, total: u64, data: Vec<T>) -> PageData<T>

分页数据对象

pub fn query_by_list<'a, T>( &self, list: &'a [T], max_page_size: u32, ) -> Result<PageData<&'a T>, QueryPageError>

对所有数据进行分页查询

pub fn query_desc_by_list<'a, T>( &self, list: &'a [T], max_page_size: u32, ) -> Result<PageData<&'a T>, QueryPageError>

对所有数据进行倒序分页查询

pub fn query_desc_by_list_and_filter<'a, T, F>( &self, list: &'a [T], max_page_size: u32, filter: F, ) -> Result<PageData<&'a T>, QueryPageError>

where F: Fn(&T) -> bool,

倒序过滤分页查询

pub fn custom_query_by_list<T, R, Filter, Compare, Transform>( &self, list: &[T], max_page_size: u32, filter: Filter, compare: Compare, transform: Transform, ) -> Result<PageData<R>, QueryPageError>

where Filter: Fn(&T) -> bool, Compare: Fn(&T, &T) -> Ordering, Transform: Fn(&T) -> R,

按条件分页查询

Trait Implementations

impl CandidType for QueryPage

fn _ty() -> Type

fn _ty_doc() -> TypeDoc

fn id() -> TypeId

fn idl_serialize<__S>(&self, __serializer: __S) -> Result<(), __S::Error>

where __S: Serializer,

fn ty() -> Type

impl Clone for QueryPage

fn clone(&self) -> QueryPage

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QueryPage

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for QueryPage

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for QueryPage

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.