assert_graph_iso/
graph.rs

1use std::{
2    fmt::{Debug, Display},
3    hash::Hash,
4};
5
6pub type NodesIterator<'a, T> = Box<dyn Iterator<Item = T> + 'a>;
7pub type LabelIterator<'a, T> = Box<dyn Iterator<Item = T> + 'a>;
8pub type PropertyIterator<'a, K, V> = Box<dyn Iterator<Item = (K, V)> + 'a>;
9
10pub trait Graph {
11    type NodeId: Debug + Hash + Eq + ?Sized;
12
13    type NodeLabel: Display + ?Sized;
14
15    type RelationshipType: Display + ?Sized;
16
17    type PropertyKey: Display + ?Sized;
18
19    type PropertyValue: Display + ?Sized;
20
21    fn nodes(&self) -> NodesIterator<&Self::NodeId>;
22
23    fn node_labels(&self, node_id: &Self::NodeId) -> LabelIterator<&Self::NodeLabel>;
24
25    fn node_properties(
26        &self,
27        node_id: &Self::NodeId,
28    ) -> PropertyIterator<&Self::PropertyKey, &Self::PropertyValue>;
29
30    fn outgoing_relationships<'a, 'b: 'a>(
31        &'a self,
32        node_id: &'b Self::NodeId,
33    ) -> PropertyIterator<
34        (&'a Self::NodeId, &'a Self::RelationshipType),
35        PropertyIterator<&'a Self::PropertyKey, &'a Self::PropertyValue>,
36    >;
37
38    fn incoming_relationships<'a, 'b: 'a>(
39        &'a self,
40        node_id: &'b Self::NodeId,
41    ) -> PropertyIterator<
42        (&'a Self::NodeId, &'a Self::RelationshipType),
43        PropertyIterator<&'a Self::PropertyKey, &'a Self::PropertyValue>,
44    >;
45}
assert_graph_iso/graph.rs

assert_graph_iso/
graph.rs
