Struct PartitionValueCalculator Copy item path

impl PartitionValueCalculator

pub fn try_new( partition_spec: &PartitionSpec, table_schema: &Schema, ) -> Result<Self>

Create a new PartitionValueCalculator.

§Arguments

partition_spec - The partition specification
table_schema - The Iceberg table schema

§Returns

Returns a new PartitionValueCalculator instance or an error if initialization fails.

§Errors

Returns an error if:

The partition spec is unpartitioned
Transform function creation fails
Projector initialization fails

pub fn partition_type(&self) -> &StructType

Get the partition type as an Iceberg StructType.

pub fn partition_arrow_type(&self) -> &DataType

Get the partition type as an Arrow DataType.

pub fn calculate(&self, batch: &RecordBatch) -> Result<ArrayRef>

Calculate partition values for a record batch.

This method:

Projects the source columns from the batch
Applies partition transforms to each source column
Constructs a StructArray containing the partition values

§Arguments

batch - The record batch to calculate partition values for

§Returns

Returns an ArrayRef containing a StructArray of partition values, or an error if calculation fails.

§Errors

Returns an error if:

Column projection fails
Transform application fails
StructArray construction fails

Trait Implementations§

impl Debug for PartitionValueCalculator

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl !UnwindSafe for PartitionValueCalculator

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> AsAny for T
where T: Any,

fn as_any(&self) -> &(dyn Any + 'static)

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

fn type_name(&self) -> &'static str

Gets the type name of self

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> Downcast for T
where T: AsAny + ?Sized,

fn is<T>(&self) -> bool
where T: AsAny,

Returns true if the boxed type is the same as T. Read more

fn downcast_ref<T>(&self) -> Option<&T>
where T: AsAny,

Forward to the method defined on the type Any.

fn downcast_mut<T>(&mut self) -> Option<&mut T>
where T: AsAny,

Forward to the method defined on the type Any.

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T, U> Into for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more