Struct ViewEngine 

pub struct ViewEngine { /* private fields */ }

Engine for building and querying persistent views.

Views are defined as Rust closures (map functions). The engine incrementally updates indexes by reading the changes feed since the last known sequence.

Implementations

impl ViewEngine

pub fn new() -> Self

pub fn register_map<F>(&mut self, ddoc: &str, view_name: &str, f: F)

where F: Fn(&Value) -> Vec<(Value, Value)> + Send + Sync + 'static,

Register a Rust map function for a design doc view.

pub async fn update_index( &mut self, adapter: &dyn Adapter, ddoc: &str, view_name: &str, ) -> Result<()>

Update a view index by fetching changes since the last known seq.

pub fn get_index( &self, ddoc: &str, view_name: &str, ) -> Option<&PersistentViewIndex>

Get a view index by ddoc/view_name.

pub fn index_names(&self) -> Vec<String>

Get all registered index names.

pub fn remove_indexes_not_in(&mut self, valid: &HashSet<String>)

Remove indexes not in the given set of valid names.

Trait Implementations

impl Default for ViewEngine

fn default() -> Self

Returns the “default value” for a type.