Struct datafusion_expr::logical_plan::builder::LogicalTableSource

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pub struct LogicalTableSource { /* private fields */ }

Expand description

Basic TableSource implementation intended for use in tests and documentation. It is expected that users will provide their own TableSource implementations or use DataFusion’s DefaultTableSource.

Implementations

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impl LogicalTableSource

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pub fn new(table_schema: SchemaRef) -> Self

Create a new LogicalTableSource

Trait Implementations

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impl TableSource for LogicalTableSource

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fn as_any(&self) -> &dyn Any

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fn schema(&self) -> SchemaRef

Get a reference to the schema for this table

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fn table_type(&self) -> TableType

Get the type of this table for metadata/catalog purposes.

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fn supports_filter_pushdown(
&self,
_filter: &Expr
) -> Result<TableProviderFilterPushDown>

Tests whether the table provider can make use of a filter expression to optimise data retrieval. Read more

Auto Trait Implementations

impl RefUnwindSafe for LogicalTableSource

impl Send for LogicalTableSource

impl Sync for LogicalTableSource

impl Unpin for LogicalTableSource

impl UnwindSafe for LogicalTableSource

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · 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.

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Struct datafusion_expr::logical_plan::builder::LogicalTableSource

Implementations

impl LogicalTableSource

pub fn new(table_schema: SchemaRef) -> Self

Trait Implementations

impl TableSource for LogicalTableSource

fn as_any(&self) -> &dyn Any

fn schema(&self) -> SchemaRef

fn table_type(&self) -> TableType

fn supports_filter_pushdown(
&self,
_filter: &Expr
) -> Result<TableProviderFilterPushDown>

Auto Trait Implementations

impl RefUnwindSafe for LogicalTableSource

impl Send for LogicalTableSource

impl Sync for LogicalTableSource

impl Unpin for LogicalTableSource

impl UnwindSafe for LogicalTableSource

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

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

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

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

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

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

Struct datafusion_expr::logical_plan::builder::LogicalTableSource

Implementations

impl LogicalTableSource

pub fn new(table_schema: SchemaRef) -> Self

Trait Implementations

impl TableSource for LogicalTableSource

fn as_any(&self) -> &dyn Any

fn schema(&self) -> SchemaRef

fn table_type(&self) -> TableType

fn supports_filter_pushdown( &self, _filter: &Expr) -> Result<TableProviderFilterPushDown>

Auto Trait Implementations

impl RefUnwindSafe for LogicalTableSource

impl Send for LogicalTableSource

impl Sync for LogicalTableSource

impl Unpin for LogicalTableSource

impl UnwindSafe for LogicalTableSource

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

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

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

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

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

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

fn supports_filter_pushdown(
&self,
_filter: &Expr
) -> Result<TableProviderFilterPushDown>

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

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

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

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

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

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

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