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§
Source§impl LogicalTableSource
impl LogicalTableSource
Sourcepub fn new(table_schema: Arc<Schema>) -> LogicalTableSource
pub fn new(table_schema: Arc<Schema>) -> LogicalTableSource
Create a new LogicalTableSource
pub fn with_constraints(self, constraints: Constraints) -> LogicalTableSource
Trait Implementations§
Source§impl TableSource for LogicalTableSource
impl TableSource for LogicalTableSource
fn as_any(&self) -> &(dyn Any + 'static)
Source§fn constraints(&self) -> Option<&Constraints>
fn constraints(&self) -> Option<&Constraints>
Get primary key indices, if any
Source§fn supports_filters_pushdown(
&self,
filters: &[&Expr],
) -> Result<Vec<TableProviderFilterPushDown>, DataFusionError>
fn supports_filters_pushdown( &self, filters: &[&Expr], ) -> Result<Vec<TableProviderFilterPushDown>, DataFusionError>
Tests whether the table provider can make use of any or all filter expressions
to optimize data retrieval. Only non-volatile expressions are passed to this function.
Source§fn table_type(&self) -> TableType
fn table_type(&self) -> TableType
Get the type of this table for metadata/catalog purposes.
Source§fn get_logical_plan(&self) -> Option<Cow<'_, LogicalPlan>>
fn get_logical_plan(&self) -> Option<Cow<'_, LogicalPlan>>
Get the Logical plan of this table provider, if available. Read more
Auto Trait Implementations§
impl Freeze for LogicalTableSource
impl RefUnwindSafe for LogicalTableSource
impl Send for LogicalTableSource
impl Sync for LogicalTableSource
impl Unpin for LogicalTableSource
impl UnwindSafe for LogicalTableSource
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Source§impl<T> AsAny for T
impl<T> AsAny for T
Source§fn any_ref(&self) -> &(dyn Any + Sync + Send + 'static)
fn any_ref(&self) -> &(dyn Any + Sync + Send + 'static)
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Converts the object to
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fn borrow_mut(&mut self) -> &mut T
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impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
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Source§impl<T> IntoEither for T
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Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
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otherwise. Read moreCreates a shared type from an unshared type.