Struct pliantdb_local::core::test_util::BasicCount

pub struct BasicCount;

Trait Implementations

impl Debug for BasicCount

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

Formats the value using the given formatter.

impl View for BasicCount

type Collection = Basic

The collection this view belongs to

type Key = ()

The key for this view.

type Value = usize

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

pub fn version(&self) -> u64

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

pub fn name(&self) -> Result<Name, InvalidNameError>

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

pub fn map(
    &self,
    document: &Document<'_>
) -> Result<Option<Map<<BasicCount as View>::Key, <BasicCount 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.

pub fn reduce(
    &self,
    mappings: &[MappedValue<<BasicCount as View>::Key, <BasicCount as View>::Value>],
    _rereduce: bool
) -> Result<<BasicCount as View>::Value, Error>

The reduce function for this view. If Err(Error::ReduceUnimplemented) is returned, queries that ask for a reduce operation will return an error. See CouchDB’s Reduce/Rereduce documentation for the design this implementation will be inspired by

fn unique(&self) -> bool

If true, no two documents may emit the same key. Unique views are updated when the document is saved, allowing for this check to be done atomically. When a document is updated, all unique views will be updated, and if any of them fail, the document will not be allowed to update and an Error::UniqueKeyViolation will be returned.

fn view_name(&self) -> Result<ViewName, InvalidNameError>

The namespaced name of the view.