Struct TripletPattern 

pub struct TripletPattern {
    pub subject: Option<String>,
    pub predicate: Option<String>,
    pub object: Option<String>,
}

A pattern for matching facts. None fields act as wildcards.

TripletPattern { subject: Some("Alice"), predicate: None, object: None }
// matches: Alice works_at Google, Alice lives_in Paris, …

Fields

subject: Option<String>

If Some(s), only facts where subject matches s (case-insensitive LIKE) are returned.

predicate: Option<String>

If Some(p), only facts where predicate matches p (case-insensitive LIKE) are returned.

object: Option<String>

If Some(o), only facts where object matches o (case-insensitive LIKE) are returned.

Implementations

impl TripletPattern

pub fn any() -> Self

Create a pattern that matches everything (all wildcards).

pub fn with_subject(self, subject: impl Into<String>) -> Self

pub fn with_predicate(self, predicate: impl Into<String>) -> Self

pub fn with_object(self, object: impl Into<String>) -> Self

Trait Implementations

impl Clone for TripletPattern

fn clone(&self) -> TripletPattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TripletPattern

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

Formats the value using the given formatter.

impl Default for TripletPattern

fn default() -> TripletPattern

Returns the “default value” for a type.