Struct DatabaseHelper

pub struct DatabaseHelper { /* private fields */ }

Database Indexes

Implementations

impl DatabaseHelper

pub fn unbounded() -> Self

Unbounded database helper

pub fn bounded(max: usize) -> Self

Bounded database helper

pub async fn qtxn(&self) -> QueryTransaction

Query transaction

pub async fn bulk_load(&self, events: BTreeSet<Event>) -> HashSet<EventId>

Bulk index

pub async fn bulk_import(&self, events: BTreeSet<Event>) -> BTreeSet<Event>

Bulk import

Take a set of Event, index them and return only the ones that must be stored into the database

pub async fn index_event(&self, event: &Event) -> DatabaseEventResult

Index Event

This method assumes that Event was already verified

pub async fn event_by_id(&self, id: &EventId) -> Option<Event>

Get Event by ID

pub async fn has_event(&self, id: &EventId) -> bool

Check if event exists

pub async fn query(&self, filter: Filter) -> Events

Query

pub fn fast_query<'a>( &self, txn: &'a QueryTransaction, filter: Filter, ) -> Box<dyn Iterator<Item = &'a Event> + 'a>

Query

pub async fn count(&self, filter: Filter) -> usize

Count events

pub async fn negentropy_items( &self, filter: Filter, ) -> Vec<(EventId, Timestamp)>

Get negentropy items

pub async fn has_event_id_been_deleted(&self, event_id: &EventId) -> bool

Check if an event with EventId has been deleted

pub async fn has_coordinate_been_deleted<'a>( &self, coordinate: &'a CoordinateBorrow<'a>, timestamp: &Timestamp, ) -> bool

Check if event with Coordinate has been deleted before Timestamp

pub async fn delete(&self, filter: Filter) -> Option<HashSet<EventId>>

Delete all events that match Filter

If return None, means that all events must be deleted from DB

pub async fn clear(&self)

Clear helper

Trait Implementations

impl Clone for DatabaseHelper

fn clone(&self) -> DatabaseHelper

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DatabaseHelper

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

Formats the value using the given formatter.

impl Default for DatabaseHelper

fn default() -> DatabaseHelper

Returns the “default value” for a type.