Struct apollo_encoder::SelectionSet

pub struct SelectionSet { /* private fields */ }

The SelectionSet type represents a selection_set type in a fragment spread, an operation or a field

SelectionSet: Selection*

Detailed documentation can be found in GraphQL spec.

Example

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

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

assert_eq!(
    selection_set.to_string(),
    indoc! {r#"
        {
          myField
          ...myFragment
        }
    "#}
)

Implementations

impl SelectionSet

pub fn new() -> Self

Create an instance of SelectionSet

pub fn with_selections(selections: Vec<Selection>) -> Self

Create an instance of SelectionSet given its selections

pub fn selection(&mut self, selection: Selection)

Add a selection in the SelectionSet

Trait Implementations

impl Clone for SelectionSet

fn clone(&self) -> SelectionSet

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SelectionSet

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

Formats the value using the given formatter.

impl Default for SelectionSet

fn default() -> SelectionSet

Returns the “default value” for a type.

impl Display for SelectionSet

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

Formats the value using the given formatter.

impl PartialEq<SelectionSet> for SelectionSet

fn eq(&self, other: &SelectionSet) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<SelectionSet> for SelectionSet

fn try_from(node: SelectionSet) -> 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.

impl StructuralPartialEq for SelectionSet