Introspection
GraphQL introspection can be used to explore the exposed Gel types
and expresssion aliases. Note that there are certain types like
tuple that cannot be expressed in terms of the GraphQL
type system (a tuple can be like a heterogeneous "List").
Consider the following GraphQL introspection query:
Copy
{
__type(name: "Query") {
name
fields {
name
args {
name
type {
kind
name
}
}
}
}
}Produces:
Copy
{
"__type": {
"name": "Query",
"fields": [
{
"name": "Author",
"args": [
{
"name": "id",
"type": {
"kind": "SCALAR",
"name": "ID"
}
},
{
"name": "name",
"type": {
"kind": "SCALAR",
"name": "String"
}
}
]
},
{
"name": "Book",
"args": [
{
"name": "id",
"type": {
"kind": "SCALAR",
"name": "ID"
}
},
{
"name": "isbn",
"type": {
"kind": "SCALAR",
"name": "String"
}
},
{
"name": "synopsis",
"type": {
"kind": "SCALAR",
"name": "String"
}
},
{
"name": "title",
"type": {
"kind": "SCALAR",
"name": "String"
}
}
]
}
]
}
}The above example shows what has been exposed for querying with GraphQL.
