Struct apollo_encoder::FragmentDefinition

pub struct FragmentDefinition { /* private fields */ }

The FragmentDefinition type represents a fragment definition

FragmentDefinition: fragment FragmentName TypeCondition Directives? SelectionSet

Detailed documentation can be found in GraphQL spec.

Example

use apollo_encoder::{Field, FragmentDefinition, Selection, SelectionSet, TypeCondition};
use indoc::indoc;

let selections = vec![Selection::Field(Field::new(String::from("myField")))];
let mut selection_set = SelectionSet::new();
selections
    .into_iter()
    .for_each(|s| selection_set.selection(s));
let mut fragment_def = FragmentDefinition::new(
    String::from("myFragment"),
    TypeCondition::new(String::from("User")),
    selection_set,
);

assert_eq!(
    fragment_def.to_string(),
    indoc! {r#"
        fragment myFragment on User {
          myField
        }
    "#}
);

Implementations

impl FragmentDefinition

pub fn new(
    name: String,
    type_condition: TypeCondition,
    selection_set: SelectionSet
) -> Self

Create an instance of FragmentDefinition.

pub fn directive(&mut self, directive: Directive)

Add a directive.

Trait Implementations

impl Debug for FragmentDefinition

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for FragmentDefinition

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl TryFrom<FragmentDefinition> for FragmentDefinition

fn try_from(node: FragmentDefinition) -> Result<Self, Self::Error>

Create an apollo-encoder node from an apollo-parser one.

Errors

This returns an error if the apollo-parser tree is not valid. The error doesn’t have much context due to TryFrom API constraints: validate the parse tree before using TryFrom if granular errors are important to you.

type Error = FromError

The type returned in the event of a conversion error.