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
use std::{borrow::Cow, marker::PhantomData};
use crate::{
connection::{
edge::Edge, ConnectionNameType, DefaultConnectionName, DefaultEdgeName, EdgeNameType,
PageInfo,
},
types::connection::{CursorType, EmptyFields},
Object, ObjectType, OutputType, TypeName,
};
pub struct Connection<
Cursor,
Node,
ConnectionFields = EmptyFields,
EdgeFields = EmptyFields,
Name = DefaultConnectionName,
EdgeName = DefaultEdgeName,
> where
Cursor: CursorType + Send + Sync,
Node: OutputType,
ConnectionFields: ObjectType,
EdgeFields: ObjectType,
Name: ConnectionNameType,
EdgeName: EdgeNameType,
{
_mark1: PhantomData<Name>,
_mark2: PhantomData<EdgeName>,
pub edges: Vec<Edge<Cursor, Node, EdgeFields, EdgeName>>,
pub additional_fields: ConnectionFields,
pub has_previous_page: bool,
pub has_next_page: bool,
}
impl<Cursor, Node, EdgeFields, Name, EdgeName>
Connection<Cursor, Node, EmptyFields, EdgeFields, Name, EdgeName>
where
Cursor: CursorType + Send + Sync,
Node: OutputType,
EdgeFields: ObjectType,
Name: ConnectionNameType,
EdgeName: EdgeNameType,
{
#[inline]
pub fn new(has_previous_page: bool, has_next_page: bool) -> Self {
Connection {
_mark1: PhantomData,
_mark2: PhantomData,
additional_fields: EmptyFields,
has_previous_page,
has_next_page,
edges: Vec::new(),
}
}
}
impl<Cursor, Node, ConnectionFields, EdgeFields, Name, EdgeName>
Connection<Cursor, Node, ConnectionFields, EdgeFields, Name, EdgeName>
where
Cursor: CursorType + Send + Sync,
Node: OutputType,
ConnectionFields: ObjectType,
EdgeFields: ObjectType,
Name: ConnectionNameType,
EdgeName: EdgeNameType,
{
#[inline]
pub fn with_additional_fields(
has_previous_page: bool,
has_next_page: bool,
additional_fields: ConnectionFields,
) -> Self {
Connection {
_mark1: PhantomData,
_mark2: PhantomData,
additional_fields,
has_previous_page,
has_next_page,
edges: Vec::new(),
}
}
}
#[Object(internal, name_type)]
impl<Cursor, Node, ConnectionFields, EdgeFields, Name, EdgeName>
Connection<Cursor, Node, ConnectionFields, EdgeFields, Name, EdgeName>
where
Cursor: CursorType + Send + Sync,
Node: OutputType,
ConnectionFields: ObjectType,
EdgeFields: ObjectType,
Name: ConnectionNameType,
EdgeName: EdgeNameType,
{
async fn page_info(&self) -> PageInfo {
PageInfo {
has_previous_page: self.has_previous_page,
has_next_page: self.has_next_page,
start_cursor: self.edges.first().map(|edge| edge.cursor.0.encode_cursor()),
end_cursor: self.edges.last().map(|edge| edge.cursor.0.encode_cursor()),
}
}
#[inline]
async fn edges(&self) -> &[Edge<Cursor, Node, EdgeFields, EdgeName>] {
&self.edges
}
async fn nodes(&self) -> Vec<&Node> {
self.edges.iter().map(|e| &e.node).collect()
}
#[graphql(flatten)]
#[inline]
async fn additional_fields(&self) -> &ConnectionFields {
&self.additional_fields
}
}
impl<Cursor, Node, ConnectionFields, EdgeFields, Name, EdgeName> TypeName
for Connection<Cursor, Node, ConnectionFields, EdgeFields, Name, EdgeName>
where
Cursor: CursorType + Send + Sync,
Node: OutputType,
ConnectionFields: ObjectType,
EdgeFields: ObjectType,
Name: ConnectionNameType,
EdgeName: EdgeNameType,
{
#[inline]
fn type_name() -> Cow<'static, str> {
Name::type_name::<Node>().into()
}
}