Struct query_structure::filter::ScalarFilter

pub struct ScalarFilter {
    pub projection: ScalarProjection,
    pub condition: ScalarCondition,
    pub mode: QueryMode,
}

Filtering with a scalar value. From a GraphQL point of view this is in the head of the query:

findManyUser(where: { id: 5 })

This translates to a projection of one column id with a condition where the column value equals 5.

Fields

projection: ScalarProjection

condition: ScalarCondition

mode: QueryMode

Implementations

impl ScalarFilter

pub fn len(&self) -> usize

The number of values in the filter. IN and NOT IN may contain more than one.

pub fn is_empty(&self) -> bool

Returns true if the number of values in the filter is 0.

pub fn should_batch(&self, chunk_size: usize) -> bool

If true, the filter should be split into smaller filters executed in separate queries.

pub fn can_batch(&self) -> bool

pub fn batched(self, chunk_size: usize) -> Vec<ScalarFilter>

If possible, converts the filter into multiple smaller filters.

pub fn as_field_ref(&self) -> Option<&ScalarFieldRef>

Returns the referenced scalar field if there is one.

pub fn scalar_fields(&self) -> Vec<&ScalarFieldRef>

Returns all the scalar fields related to a scalar filter. It also includes the referenced field if there is one.

pub fn is_unique(&self) -> bool

pub fn scalar_ref(&self) -> Option<&ScalarFieldRef>

Trait Implementations

impl Clone for ScalarFilter

fn clone(&self) -> ScalarFilter

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ScalarFilter

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

Formats the value using the given formatter.

impl From<ScalarFilter> for Filter

fn from(sf: ScalarFilter) -> Self

Converts to this type from the input type.

impl Hash for ScalarFilter

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ScalarFilter

fn eq(&self, other: &ScalarFilter) -> 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 Eq for ScalarFilter

impl StructuralEq for ScalarFilter

impl StructuralPartialEq for ScalarFilter