Struct bonsaidb::core::test_util::BasicByCategoryCow

pub struct BasicByCategoryCow;

Trait Implementations

impl Clone for BasicByCategoryCow

fn clone(&self) -> BasicByCategoryCow

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BasicByCategoryCow

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

Formats the value using the given formatter.

impl MapReduce for BasicByCategoryCow

fn map<'doc>( &self, document: &'doc BorrowedDocument<'_> ) -> Result<Mappings<<BasicByCategoryCow as ViewSchema>::MappedKey<'doc>, <<BasicByCategoryCow as ViewSchema>::View as View>::Value>, Error>

The map function for this view. This function is responsible for emitting entries for any documents that should be contained in this View. If None is returned, the View will not include the document. See the user guide’s chapter on views for more information on how map works.

fn reduce( &self, mappings: &[MappedValue<<BasicByCategoryCow as ViewSchema>::MappedKey<'_>, <<BasicByCategoryCow as ViewSchema>::View as View>::Value>], _rereduce: bool ) -> Result<<<BasicByCategoryCow as ViewSchema>::View as View>::Value, Error>

Returns a value that is produced by reducing a list of mappings into a single value. If rereduce is true, the values contained in the mappings have already been reduced at least one time. If an error of ReduceUnimplemented is returned, queries that ask for a reduce operation will return an error. See the user guide’s chapter on views for more information on how reduce works.

impl View for BasicByCategoryCow

type Collection = Basic

The collection this view belongs to

type Key = String

The key for this view.

type Value = usize

An associated type that can be stored with each entry in the view.

fn name(&self) -> Name

The name of the view. Must be unique per collection.

fn view_name(&self) -> ViewName

The namespaced name of the view.

impl ViewSchema for BasicByCategoryCow

type View = BasicByCategoryCow

The view this schema is defined for.

type MappedKey<'doc> = Cow<'doc, str>

The key type used during the map/reduce operation.

fn update_policy(&self) -> ViewUpdatePolicy

Returns the update policy for this view, which controls when and how the view’s data is updated. The provided implementation returns ViewUpdatePolicy::Lazy.

fn version(&self) -> u64

The version of the view. Changing this value will cause indexes to be rebuilt.

impl DefaultViewSerialization for BasicByCategoryCow