Struct UnboundPartitionField 

pub struct UnboundPartitionField { /* private fields */ }

Unbound partition field can be built without a schema and later bound to a schema.

The fields are private so that an instance is always well formed: in particular source_ids holds at least one id, which UnboundPartitionField::builder checks when the field is built.

Implementations

impl UnboundPartitionField

pub fn builder() -> UnboundPartitionFieldBuilder<((), (), (), ())>

Create a builder for building UnboundPartitionField. On the builder, call .source_ids(...), .field_id(...)(optional), .name(...), .transform(...) to set the values of the fields. Finally, call .build() to create the instance of UnboundPartitionField.

impl UnboundPartitionField

pub fn source_id(&self) -> Result<i32>

The single source column id this field reads.

Returns an error for a multi-argument field, which reads several columns and therefore has no single source id. Use Self::source_ids to handle both shapes.

pub fn source_ids(&self) -> &[i32]

The source column ids this field reads, in order. Never empty.

pub fn field_id(&self) -> Option<i32>

The partition field id, when one was assigned.

pub fn name(&self) -> &str

The partition name.

pub fn transform(&self) -> Transform

The transform applied to the source columns to produce a partition value.

pub fn with_field_id(self, field_id: i32) -> Self

Return this field with the given partition field id assigned.

Trait Implementations

impl Clone for UnboundPartitionField

fn clone(&self) -> UnboundPartitionField

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnboundPartitionField

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for UnboundPartitionField

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<PartitionField> for UnboundPartitionField

fn from(field: PartitionField) -> Self

Converts to this type from the input type.

impl From<UnboundPartitionField> for Result<UnboundPartitionField>

fn from(field: UnboundPartitionField) -> Self

Converts to this type from the input type.

impl PartialEq for UnboundPartitionField

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for UnboundPartitionField

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for UnboundPartitionField

impl StructuralPartialEq for UnboundPartitionField