[−][src]Module cynic::selection_set

SelectionSets are the core building block of GraphQL queries in cynic.

A SelectionSet represents part of a query with one or more fields that should be queried, and details of how those fields should be deserialized after the query is run.

The functions in this module fall into a few categories:

Functions that decode scalar values, such as int & bool.
Functions that decode container types such as vec & option. These take a selection set that is used to decode the contents of the container.
The field function, which selects a particular field of an object, and uses another selection set to decode the type of that object.
Combinators like the map, map2 etc, functions that combine multiple selection sets into a single type.

Cynic provides Query DSL generation & derive macros that mean for many cases you shouldn't need to use the functions in this module directly. However for more advanced use cases (or if you dislike macros) these can still be useful.

Re-exports

pub use map as map1;

Structs

SelectionSet

A SelectionSet is a combination of a set of fields to fetch as part of a GraphQL query and a decoder function that will decode the results of that query.

Traits

HasSubtype

A marker trait used to encode GraphQL subtype relationships into the Rust typesystem.

Functions

boolean	Creates a `SelectionSet` that will decode a `bool`
fail	Creates a `SelectionSet` that always fails to decode.
field	Selects a field from a GraphQL object, decoding it with another `SelectionSet`
float	Creates a `SelectionSet` that will decode an `f64`
inline_fragments	Creates a SelectionSet that adds some inline fragments to a query.
integer	Creates a `SelectionSet` that will decode an `i32`
json	Creates a `SelectionSet` that will decode into a `serde_json::Value`
map	Applies a function to the result of a selection.
map2	Applies a function to the result of some SelectionSets.
map3	Applies a function to the result of some SelectionSets.
map4	Applies a function to the result of some SelectionSets.
map5	Applies a function to the result of some SelectionSets.
map6	Applies a function to the result of some SelectionSets.
map7	Applies a function to the result of some SelectionSets.
map8	Applies a function to the result of some SelectionSets.
map9	Applies a function to the result of some SelectionSets.
map10	Applies a function to the result of some SelectionSets.
map11	Applies a function to the result of some SelectionSets.
map12	Applies a function to the result of some SelectionSets.
map13	Applies a function to the result of some SelectionSets.
map14	Applies a function to the result of some SelectionSets.
map15	Applies a function to the result of some SelectionSets.
map16	Applies a function to the result of some SelectionSets.
map17	Applies a function to the result of some SelectionSets.
map18	Applies a function to the result of some SelectionSets.
map19	Applies a function to the result of some SelectionSets.
map20	Applies a function to the result of some SelectionSets.
map21	Applies a function to the result of some SelectionSets.
map22	Applies a function to the result of some SelectionSets.
map23	Applies a function to the result of some SelectionSets.
map24	Applies a function to the result of some SelectionSets.
map25	Applies a function to the result of some SelectionSets.
map26	Applies a function to the result of some SelectionSets.
map27	Applies a function to the result of some SelectionSets.
map28	Applies a function to the result of some SelectionSets.
map29	Applies a function to the result of some SelectionSets.
map30	Applies a function to the result of some SelectionSets.
map31	Applies a function to the result of some SelectionSets.
map32	Applies a function to the result of some SelectionSets.
map33	Applies a function to the result of some SelectionSets.
map34	Applies a function to the result of some SelectionSets.
map35	Applies a function to the result of some SelectionSets.
map36	Applies a function to the result of some SelectionSets.
map37	Applies a function to the result of some SelectionSets.
map38	Applies a function to the result of some SelectionSets.
map39	Applies a function to the result of some SelectionSets.
map40	Applies a function to the result of some SelectionSets.
map41	Applies a function to the result of some SelectionSets.
map42	Applies a function to the result of some SelectionSets.
map43	Applies a function to the result of some SelectionSets.
map44	Applies a function to the result of some SelectionSets.
map45	Applies a function to the result of some SelectionSets.
map46	Applies a function to the result of some SelectionSets.
map47	Applies a function to the result of some SelectionSets.
map48	Applies a function to the result of some SelectionSets.
map49	Applies a function to the result of some SelectionSets.
map50	Applies a function to the result of some SelectionSets.
option	Creates a `SelectionSet` that decodes a nullable into an Option
scalar	Creates a `SelectionSet` that will decode a type that implements `Scalar`
serde	Creates a `SelectionSet` that will decode a type that implements `serde::Deserialize`
string	Creates a `SelectionSet` that will decode a `String`
succeed	Creates a `SelectionSet` that always decodes succesfully to a particular value
vec	Creates a `SelectionSet` that decodes a Vec of `inner_selection`