Struct Projection 

pub struct Projection {
    pub include: Vec<FieldPath>,
    pub exclude: Vec<FieldPath>,
}

Optional field projection narrowing which fields of each selected entity appear in the Response. Combined with Selection, this completes the ‘filter + projection’ shape.

include and exclude are mutually exclusive — if both non-empty, the resolver must return ErrorCode::ValidationError. A projection with both empty is treated the same as None (return all fields).

Fields

include: Vec<FieldPath>

Fields to include. Mutually exclusive with exclude.

exclude: Vec<FieldPath>

Fields to exclude. Mutually exclusive with include.

Implementations

impl Projection

pub fn new() -> Self

Construct an empty projection (returns all fields).

pub fn include(self, path: FieldPath) -> Self

Add an include path.

pub fn exclude(self, path: FieldPath) -> Self

Add an exclude path.

pub fn is_valid(&self) -> bool

Whether this projection is valid (include and exclude are not both non-empty).

Trait Implementations

impl Clone for Projection

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Projection

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

Formats the value using the given formatter.

impl Default for Projection

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Projection

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Projection

impl PartialEq for Projection

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Projection

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Projection