Struct parquet::arrow::arrow_reader::ArrowPredicateFn
source · pub struct ArrowPredicateFn<F> { /* private fields */ }
Expand description
An ArrowPredicate
created from an FnMut
Implementations§
source§impl<F> ArrowPredicateFn<F>
impl<F> ArrowPredicateFn<F>
sourcepub fn new(projection: ProjectionMask, f: F) -> Self
pub fn new(projection: ProjectionMask, f: F) -> Self
Create a new ArrowPredicateFn
. f
will be passed batches
that contains the columns specified in projection
and returns a BooleanArray
that describes which rows should
be passed along
Trait Implementations§
source§impl<F> ArrowPredicate for ArrowPredicateFn<F>
impl<F> ArrowPredicate for ArrowPredicateFn<F>
source§fn projection(&self) -> &ProjectionMask
fn projection(&self) -> &ProjectionMask
Returns the
ProjectionMask
that describes the columns required
to evaluate this predicate. All projected columns will be provided in the batch
passed to evaluate
source§fn evaluate(&mut self, batch: RecordBatch) -> Result<BooleanArray, ArrowError>
fn evaluate(&mut self, batch: RecordBatch) -> Result<BooleanArray, ArrowError>
Evaluate this predicate for the given
RecordBatch
containing the columns
identified by Self::projection
Read moreAuto Trait Implementations§
impl<F> Freeze for ArrowPredicateFn<F>where
F: Freeze,
impl<F> RefUnwindSafe for ArrowPredicateFn<F>where
F: RefUnwindSafe,
impl<F> Send for ArrowPredicateFn<F>where
F: Send,
impl<F> Sync for ArrowPredicateFn<F>where
F: Sync,
impl<F> Unpin for ArrowPredicateFn<F>where
F: Unpin,
impl<F> UnwindSafe for ArrowPredicateFn<F>where
F: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more