Struct Query 

pub struct Query {
    pub filter: Option<Criteria>,
    pub sort: Vec<(String, bool)>,
    pub offset: usize,
    pub limit: Option<usize>,
    pub only: Option<Vec<String>>,
}

What to read: a filter, an order and a page.

Fields

filter: Option<Criteria>

Only the records this says true for.

sort: Vec<(String, bool)>

Fields to sort by, with true for ascending.

offset: usize

How many to skip.

limit: Option<usize>

The most to return.

only: Option<Vec<String>>

Only these fields, with the key, for a list that shows few of many; none means every one.

Implementations

impl Query

pub fn all() -> Self

Everything, in key order.

pub fn filter(self, filter: Criteria) -> Self

Only the records this says true for.

pub fn sort(self, field: impl Into<String>, ascending: bool) -> Self

Then by this field.

pub fn only(self, fields: impl IntoIterator<Item = impl Into<String>>) -> Self

Only these fields, with the key. What is read this way is not for writing back.

pub fn page(self, offset: usize, limit: usize) -> Self

A page of these many, after skipping those.

Trait Implementations

impl Clone for Query

fn clone(&self) -> Query

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Query

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

Formats the value using the given formatter.

impl Default for Query

fn default() -> Query

Returns the “default value” for a type.