graphrecords-query 0.5.0

High-performance graph-based data records
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157

mod edge_endpoint;
mod entity;
mod expanded;
mod key;

use crate::{AttributeName, FailureKind};
pub use edge_endpoint::EdgeEndpointRole;
pub use entity::{EntityAttributes, IndicesInGroup};
pub use expanded::{ExpandedChild, ExpandedIndex, ExpandedIndexOwned, ExpandedIndexReference};
use graphrecords_core::{
    GraphRecord,
    errors::GraphRecordResult,
    graphrecord::{EdgeIndex, GraphRecordAttribute, GraphRecordValue, NodeIndex},
};
pub use key::GroupKey;
use std::{
    any::Any,
    fmt::{Debug, Display},
    hash::Hash,
};

pub type Position = usize;

pub trait OwnedIndex: Any + Debug + Display + Send + Sync {}

impl<T: Any + Debug + Display + Send + Sync> OwnedIndex for T {}

pub trait IndexDomain: 'static + Clone {
    type Owned: 'static + Clone + Eq + Hash + OwnedIndex;

    type Index<'a>: Clone + Eq + Hash
    where
        Self: 'a;

    fn to_owned(index: &Self::Index<'_>) -> Self::Owned;

    fn from_owned(owned: &Self::Owned) -> Self::Index<'_>;
}

pub trait EntityDomain: IndexDomain {
    fn resolve_index<'a>(
        graphrecord: &'a GraphRecord,
        index: &Self::Owned,
    ) -> GraphRecordResult<Self::Index<'a>>;
}

#[derive(Clone, Debug)]
pub struct Positional;

impl IndexDomain for Positional {
    type Index<'a> = Position;
    type Owned = Position;

    fn to_owned(index: &Self::Index<'_>) -> Self::Owned {
        *index
    }

    fn from_owned(owned: &Self::Owned) -> Self::Index<'_> {
        *owned
    }
}

impl IndexDomain for EdgeIndex {
    type Index<'a> = &'a Self;
    type Owned = Self;

    fn to_owned(index: &Self::Index<'_>) -> Self::Owned {
        **index
    }

    fn from_owned(owned: &Self::Owned) -> Self::Index<'_> {
        owned
    }
}

impl IndexDomain for NodeIndex {
    type Index<'a> = &'a Self;
    type Owned = Self;

    fn to_owned(index: &Self::Index<'_>) -> Self::Owned {
        (*index).clone()
    }

    fn from_owned(owned: &Self::Owned) -> Self::Index<'_> {
        owned
    }
}

impl IndexDomain for FailureKind {
    type Index<'a> = Self;
    type Owned = Self;

    fn to_owned(index: &Self::Index<'_>) -> Self::Owned {
        *index
    }

    fn from_owned(owned: &Self::Owned) -> Self::Index<'_> {
        *owned
    }
}

impl IndexDomain for GraphRecordValue {
    type Index<'a> = Self;
    type Owned = Self;

    fn to_owned(index: &Self::Index<'_>) -> Self::Owned {
        index.clone()
    }

    fn from_owned(owned: &Self::Owned) -> Self::Index<'_> {
        owned.clone()
    }
}

impl IndexDomain for AttributeName {
    type Index<'a> = GraphRecordAttribute;
    type Owned = GraphRecordAttribute;

    fn to_owned(index: &Self::Index<'_>) -> Self::Owned {
        index.clone()
    }

    fn from_owned(owned: &Self::Owned) -> Self::Index<'_> {
        owned.clone()
    }
}

impl IndexDomain for bool {
    type Index<'a> = Self;
    type Owned = Self;

    fn to_owned(index: &Self::Index<'_>) -> Self::Owned {
        *index
    }

    fn from_owned(owned: &Self::Owned) -> Self::Index<'_> {
        *owned
    }
}

impl EntityDomain for EdgeIndex {
    fn resolve_index<'a>(
        graphrecord: &'a GraphRecord,
        index: &Self::Owned,
    ) -> GraphRecordResult<Self::Index<'a>> {
        graphrecord.resolve_edge_index(index)
    }
}

impl EntityDomain for NodeIndex {
    fn resolve_index<'a>(
        graphrecord: &'a GraphRecord,
        index: &Self::Owned,
    ) -> GraphRecordResult<Self::Index<'a>> {
        graphrecord.resolve_node_index(index)
    }
}