Struct Query 

pub struct Query<'a> { /* private fields */ }

A Query refers to a query which you can read or listen to.

You can also construct refined Query objects by adding filters and ordering.

Implementations

impl<'a> Query<'a>

pub fn where_filter<T: Serialize>( &self, field: &str, op: FieldOperator, value: T, ) -> Result<Query<'a>, FirestoreError>

Creates and returns a new Query with the additional filter.

Arguments

• field - The path of the field to filter (e.g., “age”).
• op - The operation to apply.
• value - The value to compare against.

pub fn order_by(&self, field: &str, direction: Direction) -> Query<'a>

Creates and returns a new Query that’s additionally sorted by the specified field.

pub fn limit(&self, limit: i32) -> Query<'a>

Creates and returns a new Query that only returns the first matching documents.

pub fn offset(&self, offset: i32) -> Query<'a>

Creates and returns a new Query that skips the first matching documents.

pub async fn get(&self) -> Result<QuerySnapshot<'a>, FirestoreError>

Executes the query and returns the results as a QuerySnapshot.

pub async fn listen(&self) -> Result<ListenStream, FirestoreError>

Listens to changes to the query results.

Trait Implementations

impl<'a> Clone for Query<'a>

fn clone(&self) -> Query<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.