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use oxigraph::model::{Term, Triple, NamedOrBlankNode};
use crate::error::ReasonableError;
pub type URI = u32;
pub type KeyedTriple = (URI, (URI, URI));
#[macro_export]
macro_rules! uri {
($ns:expr, $t:expr) => {
Term::NamedNode(NamedNode::new(format!($ns, $t)).unwrap())
};
}
#[macro_export]
macro_rules! owl {
($t:expr) => {
uri!("http://www.w3.org/2002/07/owl#{}", $t)
};
}
#[macro_export]
macro_rules! rdf {
($t:expr) => {
uri!("http://www.w3.org/1999/02/22-rdf-syntax-ns#{}", $t)
};
}
#[macro_export]
macro_rules! rdfs {
($t:expr) => {
uri!("http://www.w3.org/2000/01/rdf-schema#{}", $t)
};
}
#[macro_export]
macro_rules! node_relation {
($self:expr, $uri:expr) => {{
let x = $self.iter1.variable::<(URI, ())>("tmp");
let v = vec![($self.index.put($uri), ())];
x.extend(v.iter());
x
}};
}
pub fn make_triple(s: Term, p: Term, o: Term) -> Result<Triple, ReasonableError> {
let s = match s {
Term::NamedNode(n) => NamedOrBlankNode::NamedNode(n),
Term::BlankNode(b) => NamedOrBlankNode::BlankNode(b),
_ => return Err(ReasonableError::ManagerError("Cannot have literal as subject".to_string()))
};
let p = match p {
Term::NamedNode(n) => n,
_ => return Err(ReasonableError::ManagerError("Must have named node as predicate".to_string()))
};
Ok(Triple::new(s,p,o))
}