Struct mentat_db::cache::InProgressSQLiteAttributeCache

pub struct InProgressSQLiteAttributeCache {
    pub overlay: AttributeCaches,
    // some fields omitted
}

We maintain a diff on top of the inner -- existing -- cache. That involves tracking unregisterings and registerings.

Fields

overlay: AttributeCaches

Methods

impl InProgressSQLiteAttributeCache

pub fn from_cache(inner: SQLiteAttributeCache) -> InProgressSQLiteAttributeCache

pub fn register_forward<U>(     &mut self,     schema: &Schema,     sqlite: &Connection,     attribute: U ) -> Result<()> where     U: Into<Entid>,

pub fn register_reverse<U>(     &mut self,     schema: &Schema,     sqlite: &Connection,     attribute: U ) -> Result<()> where     U: Into<Entid>,

pub fn register<U>(     &mut self,     schema: &Schema,     sqlite: &Connection,     attribute: U ) -> Result<()> where     U: Into<Entid>,

pub fn unregister<U>(&mut self, attribute: U) where     U: Into<Entid>,

pub fn unregister_all(&mut self)

impl InProgressSQLiteAttributeCache

pub fn values_pairs<U>(     &self,     schema: &Schema,     attribute: U ) -> Option<&BTreeMap<Entid, Vec<TypedValue>>> where     U: Into<Entid>,

Intended for use from tests.

pub fn value_pairs<U>(     &self,     schema: &Schema,     attribute: U ) -> Option<&BTreeMap<Entid, Option<TypedValue>>> where     U: Into<Entid>,

Intended for use from tests.

pub fn commit_to(self, destination: &mut SQLiteAttributeCache)

impl InProgressSQLiteAttributeCache

pub fn transact_watcher<'a>(&'a mut self) -> InProgressCacheTransactWatcher<'a>

Trait Implementations

impl Debug for InProgressSQLiteAttributeCache

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for InProgressSQLiteAttributeCache

fn default() -> InProgressSQLiteAttributeCache

Returns the "default value" for a type.

impl UpdateableCache for InProgressSQLiteAttributeCache

type Error = Error

fn update<I>(     &mut self,     schema: &Schema,     retractions: I,     assertions: I ) -> Result<(), Self::Error> where     I: Iterator<Item = (Entid, Entid, TypedValue)>,

impl CachedAttributes for InProgressSQLiteAttributeCache

fn get_values_for_entid(     &self,     schema: &Schema,     attribute: Entid,     entid: Entid ) -> Option<&Vec<TypedValue>>

fn get_value_for_entid(     &self,     schema: &Schema,     attribute: Entid,     entid: Entid ) -> Option<&TypedValue>

fn is_attribute_cached_reverse(&self, attribute: Entid) -> bool

fn is_attribute_cached_forward(&self, attribute: Entid) -> bool

fn has_cached_attributes(&self) -> bool

fn get_entids_for_value(     &self,     attribute: Entid,     value: &TypedValue ) -> Option<&BTreeSet<Entid>>

fn get_entid_for_value(     &self,     attribute: Entid,     value: &TypedValue ) -> Option<Entid>

Reverse lookup.