Struct DatasetQuery 

pub struct DatasetQuery<'a> { /* private fields */ }

Read-only query interface over a binary LXDB dataset.

The query borrows the dataset and does not allocate an intermediate graph.

Implementations

impl<'a> DatasetQuery<'a>

pub const fn new(dataset: &'a BinaryDataset) -> Self

pub const fn dataset(&self) -> &'a BinaryDataset

pub fn token_by_text( &self, text: &str, ) -> Result<Option<BinaryToken<'a>>, EngineError>

Finds the first token whose text exactly matches text.

This performs a linear scan over the token records.

pub fn token_by_id( &self, token_id: TokenId, ) -> Result<Option<BinaryToken<'a>>, EngineError>

pub fn outgoing( &self, token_id: TokenId, ) -> Result<RelationRecordIter<'a>, EngineError>

pub fn resolved_outgoing( &self, token_id: TokenId, ) -> Result<BinaryRelationIter<'a>, EngineError>

Resolves all outgoing relations for a token.

pub fn related_to( &self, text: &str, ) -> Result<Option<BinaryRelationIter<'a>>, EngineError>

Finds a token by text and resolves its outgoing relations.

Ok(None) means that no token exists with the provided text.

Trait Implementations

impl<'a> Clone for DatasetQuery<'a>

fn clone(&self) -> DatasetQuery<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for DatasetQuery<'a>

impl<'a> Debug for DatasetQuery<'a>

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

Formats the value using the given formatter.