Struct terminus_store::store::StoreLayer

pub struct StoreLayer { /* fields omitted */ }

A layer that keeps track of the store it came out of, allowing the creation of a layer builder on top of this layer

Implementations

impl StoreLayer

pub fn open_write(
    &self
) -> impl Future<Item = StoreLayerBuilder, Error = Error> + Send

Create a layer builder based on this layer

pub fn parent(&self) -> Option<StoreLayer>

pub fn squash(&self) -> impl Future<Item = StoreLayer, Error = Error> + Send

Trait Implementations

impl Clone for StoreLayer

fn clone(&self) -> StoreLayer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Layer for StoreLayer

fn name(&self) -> [u32; 5]

The name of this layer.

fn names(&self) -> Vec<[u32; 5]>

Name of the layer including its parents

fn parent(&self) -> Option<&dyn Layer>

The parent of this layer, or None if this is a base layer.

fn node_and_value_count(&self) -> usize

The amount of nodes and values known to this layer. This also counts entries in the parent.

fn node_dict_id(&self, subject: &str) -> Option<u64>

Node dict id of current layer

fn node_dict_len(&self) -> usize

Node dict length of this specific layer

fn node_dict_get(&self, id: usize) -> Option<String>

Node dictionary get function

fn value_dict_len(&self) -> usize

Value dict length of this specific layer

fn value_dict_id(&self, value: &str) -> Option<u64>

Value dict id of current layer

fn value_dict_get(&self, id: usize) -> Option<String>

Value dictionary get function

fn predicate_dict_id(&self, predicate: &str) -> Option<u64>

Predicate dict id of current layer

fn predicate_dict_len(&self) -> usize

Predicate dict length of this specific layer

fn predicate_dict_get(&self, id: usize) -> Option<String>

Predicate dictionary get function

fn predicate_count(&self) -> usize

The amount of predicates known to this layer. This also counts entries in the parent.

fn subject_id(&self, subject: &str) -> Option<u64>

The numerical id of a subject, or None if the subject cannot be found.

fn predicate_id(&self, predicate: &str) -> Option<u64>

The numerical id of a predicate, or None if the predicate cannot be found.

fn object_node_id(&self, object: &str) -> Option<u64>

The numerical id of a node object, or None if the node object cannot be found.

fn object_value_id(&self, object: &str) -> Option<u64>

The numerical id of a value object, or None if the value object cannot be found.

fn id_subject(&self, id: u64) -> Option<String>

The subject corresponding to a numerical id, or None if it cannot be found.

fn id_predicate(&self, id: u64) -> Option<String>

The predicate corresponding to a numerical id, or None if it cannot be found.

fn id_object(&self, id: u64) -> Option<ObjectType>

The object corresponding to a numerical id, or None if it cannot be found.

fn subject_additions(
    &self
) -> Box<dyn Iterator<Item = Box<dyn LayerSubjectLookup>>>

Returns an iterator over all triple data added by this layer.

fn subject_removals(
    &self
) -> Box<dyn Iterator<Item = Box<dyn LayerSubjectLookup>>>

Returns an iterator over all triple data removed by this layer.

fn lookup_subject_addition(
    &self,
    subject: u64
) -> Option<Box<dyn LayerSubjectLookup>>

Returns a LayerSubjectLookup object for the given subject, or None if it cannot be constructed.

fn lookup_subject_removal(
    &self,
    subject: u64
) -> Option<Box<dyn LayerSubjectLookup>>

Returns a LayerSubjectLookup object for the given subject, or None if it cannot be constructed.

fn object_additions(
    &self
) -> Box<dyn Iterator<Item = Box<dyn LayerObjectLookup>>>

Returns an iterator over all objects added by this layer.

fn object_removals(
    &self
) -> Box<dyn Iterator<Item = Box<dyn LayerObjectLookup>>>

Returns an iterator over all objects removed by this layer.

fn lookup_object_addition(
    &self,
    object: u64
) -> Option<Box<dyn LayerObjectLookup>>

Returns a LayerObjectLookup for the given object, or None if it could not be constructed.

fn lookup_object_removal(
    &self,
    object: u64
) -> Option<Box<dyn LayerObjectLookup>>

Returns a LayerObjectLookup for the given object, or None if it could not be constructed.

fn lookup_predicate_addition(
    &self,
    predicate: u64
) -> Option<Box<dyn LayerPredicateLookup>>

Returns a LayerPredicateLookup for the given predicate, or None if it could not be constructed.

fn lookup_predicate_removal(
    &self,
    predicate: u64
) -> Option<Box<dyn LayerPredicateLookup>>

Returns a LayerPredicateLookup for the given predicate, or None if it could not be constructed.

fn clone_boxed(&self) -> Box<dyn Layer>

Return a clone of this layer in a box.

fn triple_layer_addition_count(&self) -> usize

Returns the amount of triples that this layer adds.

fn triple_layer_removal_count(&self) -> usize

Returns the amount of triples that this layer removes.

fn subjects(&self) -> Box<dyn Iterator<Item = Box<dyn SubjectLookup>>>

Returns an iterator over all triple data known to this layer.

fn subject_additions_generic(
    &self
) -> Box<dyn Iterator<Item = Box<dyn SubjectLookup>>>

A convenience wrapper around subject_additions, which returns an iterator over SubjectLookups rather than over LayerSubjectLookups.

fn subject_removals_generic(
    &self
) -> Box<dyn Iterator<Item = Box<dyn SubjectLookup>>>

A convenience wrapper around subject_removals, which returns an iterator over SubjectLookups rather than over LayerSubjectLookups.

fn lookup_subject(&self, subject: u64) -> Option<Box<dyn SubjectLookup>>

Returns a SubjectLookup object for the given subject, or None if it cannot be constructed.

fn lookup_subject_addition_generic(
    &self,
    subject: u64
) -> Option<Box<dyn SubjectLookup>>

A convenience wrapper around lookup_subject_addition, which returns a SubjectLookup rather than a LayerSubjectLookup.

fn lookup_subject_removal_generic(
    &self,
    subject: u64
) -> Option<Box<dyn SubjectLookup>>

A convenience wrapper around lookup_subject_removal, which returns a SubjectLookup rather than a LayerSubjectLookup.

fn objects(&self) -> Box<dyn Iterator<Item = Box<dyn ObjectLookup>>>

Returns an iterator over all objects known to this layer.

fn object_additions_generic(
    &self
) -> Box<dyn Iterator<Item = Box<dyn ObjectLookup>>>

A convenience wrapper around object_additions, which returns an iterator over ObjectLookups rather than over LayerObjectLookups.

fn object_removals_generic(
    &self
) -> Box<dyn Iterator<Item = Box<dyn ObjectLookup>>>

A convenience wrapper around object_removals, which returns an iterator over ObjectLookups rather than over LayerObjectLookups.

fn lookup_object(&self, object: u64) -> Option<Box<dyn ObjectLookup>>

Returns an ObjectLookup for the given object, or None if it could not be constructed.

fn lookup_object_addition_generic(
    &self,
    object: u64
) -> Option<Box<dyn ObjectLookup>>

A convenience wrapper around lookup_object_addition, which returns an ObjectLookup rather than a LayerObjectLookup.

fn lookup_object_removal_generic(
    &self,
    object: u64
) -> Option<Box<dyn ObjectLookup>>

A convenience wrapper around lookup_object_removal, which returns an ObjectLookup rather than a LayerObjectLookup.

fn lookup_predicate(&self, predicate: u64) -> Option<Box<dyn PredicateLookup>>

Returns a PredicateLookup for the given predicate, or None if it could not be constructed.

fn lookup_predicate_addition_generic(
    &self,
    predicate: u64
) -> Option<Box<dyn PredicateLookup>>

fn lookup_predicate_removal_generic(
    &self,
    predicate: u64
) -> Option<Box<dyn PredicateLookup>>

fn all_counts(&self) -> LayerCounts

Create a struct with all the counts

fn predicates(&self) -> Box<dyn Iterator<Item = Box<dyn PredicateLookup>>>

fn predicate_additions(
    &self
) -> Box<dyn Iterator<Item = Box<dyn LayerPredicateLookup>>>

fn predicate_additions_generic(
    &self
) -> Box<dyn Iterator<Item = Box<dyn PredicateLookup>>>

fn predicate_removals(
    &self
) -> Box<dyn Iterator<Item = Box<dyn LayerPredicateLookup>>>

fn predicate_removals_generic(
    &self
) -> Box<dyn Iterator<Item = Box<dyn PredicateLookup>>>

fn triple_exists(&self, subject: u64, predicate: u64, object: u64) -> bool

Returns true if the given triple exists, and false otherwise.

fn id_triple_exists(&self, triple: IdTriple) -> bool

Returns true if the given triple exists, and false otherwise.

fn string_triple_exists(&self, triple: &StringTriple) -> bool

Returns true if the given triple exists, and false otherwise.

fn triples(&self) -> Box<dyn Iterator<Item = IdTriple>>

Iterator over all triples known to this layer.

fn string_triple_to_id(&self, triple: &StringTriple) -> Option<IdTriple>

Convert a StringTriple to an IdTriple, returning None if any of the strings in the triple could not be resolved.

fn string_triple_to_partially_resolved(
    &self,
    triple: &StringTriple
) -> PartiallyResolvedTriple

Convert all known strings in the given string triple to ids.

fn id_triple_to_string(&self, triple: &IdTriple) -> Option<StringTriple>

Convert an id triple to the corresponding string version, returning None if any of those ids could not be converted.

fn is_ancestor_of(&self, other: &dyn Layer) -> bool

Returns true if the given layer is an ancestor of this layer, false otherwise.

fn triple_addition_count(&self) -> usize

Returns the total amount of triple additions in this layer and all its parents.

fn triple_removal_count(&self) -> usize

Returns the total amount of triple removals in this layer and all its parents.

fn triple_count(&self) -> usize

Returns the total amount of triples in this layer and all its parents.