Enum SparqlJoinType 

pub enum SparqlJoinType {
    Inner,
    Left,
}

Represents the type of join operation in SPARQL query processing.

This enum defines the different types of joins that can be performed when combining solution mappings in SPARQL queries.

Additional Resources

• SPARQL 1.1 Query Language - Basic Graph Patterns

Variants

Inner

An inner join that only includes solution mappings that are compatible.

This is the standard join operation in SPARQL, where only solutions that have compatible values for shared variables are included in the result.

Left

A left outer join that preserves all solution mappings from the left side.

This corresponds to the OPTIONAL keyword in SPARQL, where all solutions from the left pattern are preserved, with NULL values for variables that don’t have compatible solutions in the right pattern.

Trait Implementations

impl Clone for SparqlJoinType

fn clone(&self) -> SparqlJoinType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparqlJoinType

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

Formats the value using the given formatter.

impl Display for SparqlJoinType

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

Formats the value using the given formatter.

impl Hash for SparqlJoinType

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SparqlJoinType

fn eq(&self, other: &SparqlJoinType) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SparqlJoinType

impl Eq for SparqlJoinType

impl StructuralPartialEq for SparqlJoinType