Struct MergedView 

pub struct MergedView {
    pub name: String,
    /* private fields */
}

Merges a default graph with one or more named graphs.

The result presents all triples from the default graph plus those from the named graphs. The default graph takes priority: if a triple appears in both the default graph and a named graph, only the default version is returned when deduplicate is true.

Fields

name: String

Name for this merged view.

Implementations

impl MergedView

pub fn new( name: &str, default_graph: GraphView, named_graphs: Vec<GraphView>, deduplicate: bool, ) -> Self

Create a new merged view from a default graph and a set of named graphs.

pub fn add_named_graph(&mut self, graph: GraphView)

Add a named graph to the merge.

pub fn triples(&self) -> Vec<RdfTriple>

Enumerate all triples.

pub fn materialize(&mut self) -> &[RdfTriple]

Materialize the merged result into a cached Vec<RdfTriple>.

pub fn invalidate(&mut self)

Invalidate the materialization cache.

pub fn find( &self, subject: Option<&str>, predicate: Option<&str>, object: Option<&str>, ) -> Vec<RdfTriple>

Find triples matching a pattern across default + named graphs.

pub fn len(&self) -> usize

Total triple count in the merged view.

pub fn is_empty(&self) -> bool

pub fn source_summary(&self) -> HashMap<String, usize>

Summary of how many triples come from each source.

Trait Implementations

impl Clone for MergedView

fn clone(&self) -> MergedView

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MergedView

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

Formats the value using the given formatter.