Skip to main content

DefaultSchemaAdapterFactory

datafusion_datasource::schema_adapter

Struct DefaultSchemaAdapterFactory

pub struct DefaultSchemaAdapterFactory;

👎Deprecated since 52.0.0:

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

Expand description

Deprecated: Default SchemaAdapterFactory for mapping schemas.

This struct has been removed.

Use PhysicalExprAdapterFactory instead to customize scans via FileScanConfigBuilder, i.e. if you had implemented a custom SchemaAdapter and passed that into FileScanConfigBuilder / ParquetSource. Use BatchAdapter if you want to map a stream of RecordBatches between one schema and another, i.e. if you were calling SchemaMapper::map_batch manually.

See upgrading.md for more details.

Implementations§

impl DefaultSchemaAdapterFactory

pub fn from_schema(table_schema: SchemaRef) -> Box<dyn SchemaAdapter>

👎Deprecated since 52.0.0:

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

Deprecated: Create a new factory for mapping batches from a file schema to a table schema.

Trait Implementations§

impl SchemaAdapterFactory for DefaultSchemaAdapterFactory

fn create( &self, projected_table_schema: SchemaRef, _table_schema: SchemaRef, ) -> Box<dyn SchemaAdapter>

👎Deprecated since 52.0.0:

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

Create a SchemaAdapter

fn create_with_projected_schema( &self, projected_table_schema: SchemaRef, ) -> Box<dyn SchemaAdapter>

👎Deprecated since 52.0.0:

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

Create a SchemaAdapter using only the projected table schema.

impl Clone for DefaultSchemaAdapterFactory

fn clone(&self) -> DefaultSchemaAdapterFactory

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for DefaultSchemaAdapterFactory

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

Formats the value using the given formatter. Read more

impl Default for DefaultSchemaAdapterFactory

fn default() -> DefaultSchemaAdapterFactory

Returns the “default value” for a type. Read more

Auto Trait Implementations§

impl Freeze for DefaultSchemaAdapterFactory

impl RefUnwindSafe for DefaultSchemaAdapterFactory

impl Send for DefaultSchemaAdapterFactory

impl Sync for DefaultSchemaAdapterFactory

impl Unpin for DefaultSchemaAdapterFactory

impl UnsafeUnpin for DefaultSchemaAdapterFactory

impl UnwindSafe for DefaultSchemaAdapterFactory

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> 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> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> 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

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

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

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

The type returned in the event of a conversion error.

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

Performs the conversion.

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

fn vzip(self) -> V

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

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