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ForeignSession

datafusion_ffi::session

Struct ForeignSession 

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pub struct ForeignSession { /* private fields */ }
Expand description

This wrapper struct exists on the receiver side of the FFI interface, so it has no guarantees about being able to access the data in private_data. Any functions defined on this struct must only use the stable functions provided in FFI_Session to interact with the foreign table provider.

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impl Debug for ForeignSession

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

Formats the value using the given formatter. Read more
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impl Send for ForeignSession

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impl Session for ForeignSession

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fn session_id(&self) -> &str

Return the session ID
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fn config(&self) -> &SessionConfig

Return the SessionConfig
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fn config_options(&self) -> &ConfigOptions

return the ConfigOptions
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fn create_physical_plan<'life0, 'life1, 'async_trait>( &'life0 self, logical_plan: &'life1 LogicalPlan, ) -> Pin<Box<dyn Future<Output = Result<Arc<dyn ExecutionPlan>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Creates a physical ExecutionPlan plan from a LogicalPlan. Read more
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fn create_physical_expr( &self, expr: Expr, df_schema: &DFSchema, ) -> Result<Arc<dyn PhysicalExpr>>

Create a PhysicalExpr from an Expr after applying type coercion, and function rewrites. Read more
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fn scalar_functions(&self) -> &HashMap<String, Arc<ScalarUDF>>

Return reference to scalar_functions
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fn higher_order_functions(&self) -> &HashMap<String, Arc<HigherOrderUDF>>

Return reference to higher_order_functions
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fn aggregate_functions(&self) -> &HashMap<String, Arc<AggregateUDF>>

Return reference to aggregate_functions
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fn window_functions(&self) -> &HashMap<String, Arc<WindowUDF>>

Return reference to window functions
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fn extension_type_registry(&self) -> &ExtensionTypeRegistryRef

Return a reference to the extension type registry
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fn runtime_env(&self) -> &Arc<RuntimeEnv> ⓘ

Return the runtime env
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fn execution_props(&self) -> &ExecutionProps

Return the execution properties
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fn as_any(&self) -> &dyn Any

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fn table_options(&self) -> &TableOptions

Return the table options
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fn default_table_options(&self) -> TableOptions

return the TableOptions options with its extensions
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fn table_options_mut(&mut self) -> &mut TableOptions

Returns a mutable reference to TableOptions
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fn task_ctx(&self) -> Arc<TaskContext> ⓘ

Get a new TaskContext to run in this session
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impl Sync for ForeignSession

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Blanket Implementations§

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impl<Source> AccessAs for Source

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fn ref_as<T>(&self) -> <Source as IGuardRef<T>>::Guard<'_>
where Source: IGuardRef<T>, T: ?Sized,

Provides immutable access to a type as if it were its ABI-unstable equivalent.
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fn mut_as<T>(&mut self) -> <Source as IGuardMut<T>>::GuardMut<'_>
where Source: IGuardMut<T>, T: ?Sized,

Provides mutable access to a type as if it were its ABI-unstable equivalent.
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impl<T> Any for T
where 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 T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, As> IGuardMut<As> for T
where T: Into<As>, As: Into<T>,

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type GuardMut<'a> = MutAs<'a, T, As> where T: 'a

The type of the guard which will clean up the temporary after applying its changes to the original.
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fn guard_mut_inner(&mut self) -> <T as IGuardMut<As>>::GuardMut<'_>

Construct the temporary and guard it through a mutable reference.
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impl<T, As> IGuardRef<As> for T
where T: Into<As>, As: Into<T>,

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type Guard<'a> = RefAs<'a, T, As> where T: 'a

The type of the guard which will clean up the temporary.
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fn guard_ref_inner(&self) -> <T as IGuardRef<As>>::Guard<'_>

Construct the temporary and guard it through an immutable reference.
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impl<T> Includes<End> for T

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type Output = End

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

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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> IntoEither for T

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V