SchemaMapping

datafusion_datasource::schema_adapter

Struct SchemaMapping 

Source 
pub struct SchemaMapping { /* private fields */ }
👎Deprecated since 52.0.0: SchemaMapping has been removed. Use PhysicalExprAdapterFactory instead. See upgrading.md for more details.
Expand description

Deprecated: The SchemaMapping struct held a mapping from the file schema to the table schema.

This struct has been removed. Use PhysicalExprAdapterFactory instead. See upgrading.md for more details.

Trait Implementations§

Source§

impl Debug for SchemaMapping

Source§

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

Formats the value using the given formatter. Read more
Source§

impl SchemaMapper for SchemaMapping

Source§

fn map_batch(&self, _batch: RecordBatch) -> Result<RecordBatch>

👎Deprecated since 52.0.0: SchemaMapper has been removed. Use PhysicalExprAdapterFactory instead. See upgrading.md for more details.
Adapts a RecordBatch to match the table_schema.
Source§

fn map_column_statistics( &self, _file_col_statistics: &[ColumnStatistics], ) -> Result<Vec<ColumnStatistics>>

👎Deprecated since 52.0.0: SchemaMapper has been removed. Use PhysicalExprAdapterFactory instead. See upgrading.md for more details.
Adapts file-level column Statistics to match the table_schema.

Auto Trait Implementations§

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

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

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

impl<T> IntoEither for T

Source§

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
Source§

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
Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

Source§

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

Source§

impl<T> ErasedDestructor for T
where T: 'static,