| 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
158
159
160
161
162
163
164
165
166
167
168
169
170
171 |
1x
1x
1x
1x
1x
1x
4x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
| /**
* Copyright (c) 2015, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
import {
GraphQLEnumType,
GraphQLInterfaceType,
GraphQLObjectType,
GraphQLList,
GraphQLNonNull,
GraphQLSchema,
GraphQLString
} from 'graphql';
import { getFriends, getHero, getHuman, getDroid } from './data.js';
const episodeEnum = new GraphQLEnumType({
name: 'Episode',
description: 'One of the films in the Star Wars Trilogy',
values: {
NEWHOPE: {
value: 4,
description: 'Released in 1977.'
},
EMPIRE: {
value: 5,
description: 'Released in 1980.'
},
JEDI: {
value: 6,
description: 'Released in 1983.'
}
}
});
const characterInterface = new GraphQLInterfaceType({
name: 'Character',
description: 'A character in the Star Wars Trilogy',
fields: () => ({
id: {
type: new GraphQLNonNull(GraphQLString),
description: 'The id of the character.'
},
name: {
type: GraphQLString,
description: 'The name of the character.'
},
friends: {
type: new GraphQLList(characterInterface),
description:
'The friends of the character, or an empty list if they ' + 'have none.'
},
appearsIn: {
type: new GraphQLList(episodeEnum),
description: 'Which movies they appear in.'
}
}),
resolveType: character => {
return getHuman(character.id) ? humanType : droidType;
}
});
const humanType = new GraphQLObjectType({
name: 'Human',
description: 'A humanoid creature in the Star Wars universe.',
fields: () => ({
id: {
type: new GraphQLNonNull(GraphQLString),
description: 'The id of the human.'
},
name: {
type: GraphQLString,
description: 'The name of the human.'
},
friends: {
type: new GraphQLList(characterInterface),
description:
'The friends of the human, or an empty list if they ' + 'have none.',
resolve: human => getFriends(human)
},
appearsIn: {
type: new GraphQLList(episodeEnum),
description: 'Which movies they appear in.'
},
homePlanet: {
type: GraphQLString,
description: 'The home planet of the human, or null if unknown.'
}
}),
interfaces: [characterInterface]
});
const droidType = new GraphQLObjectType({
name: 'Droid',
description: 'A mechanical creature in the Star Wars universe.',
fields: () => ({
id: {
type: new GraphQLNonNull(GraphQLString),
description: 'The id of the droid.'
},
name: {
type: GraphQLString,
description: 'The name of the droid.'
},
friends: {
type: new GraphQLList(characterInterface),
description:
'The friends of the droid, or an empty list if they ' + 'have none.',
resolve: droid => getFriends(droid)
},
appearsIn: {
type: new GraphQLList(episodeEnum),
description: 'Which movies they appear in.'
},
primaryFunction: {
type: GraphQLString,
description: 'The primary function of the droid.'
}
}),
interfaces: [characterInterface]
});
const queryType = new GraphQLObjectType({
name: 'Query',
fields: () => ({
hero: {
type: characterInterface,
args: {
episode: {
description:
'If omitted, returns the hero of the whole saga. If ' +
'provided, returns the hero of that particular episode.',
type: episodeEnum
}
},
resolve: (root, { episode }) => getHero(episode)
},
human: {
type: humanType,
args: {
id: {
description: 'id of the human',
type: new GraphQLNonNull(GraphQLString)
}
},
resolve: (root, { id }) => getHuman(id)
},
droid: {
type: droidType,
args: {
id: {
description: 'id of the droid',
type: new GraphQLNonNull(GraphQLString)
}
},
resolve: (root, { id }) => getDroid(id)
}
})
});
const schema = new GraphQLSchema({
query: queryType
});
export default schema;
|