pub fn build_filter(filter: &BooleanArray) -> Result<Filter> {
    let iter = SlicesIterator::new(filter.values());
    let filter_count = iter.slots();
    let chunks = iter.collect::<Vec<_>>();

    Ok(Box::new(move |array: &dyn Array| match array.data_type() {
        DataType::UInt8 => {
            dyn_build_filter!(u8, array, filter_count, chunks)
        }
        DataType::UInt16 => {
            dyn_build_filter!(u16, array, filter_count, chunks)
        }
        DataType::UInt32 => {
            dyn_build_filter!(u32, array, filter_count, chunks)
        }
        DataType::UInt64 => {
            dyn_build_filter!(u64, array, filter_count, chunks)
        }
        DataType::Int8 => {
            dyn_build_filter!(i8, array, filter_count, chunks)
        }
        DataType::Int16 => {
            dyn_build_filter!(i16, array, filter_count, chunks)
        }
        DataType::Int32
        | DataType::Date32
        | DataType::Time32(_)
        | DataType::Interval(IntervalUnit::YearMonth) => {
            dyn_build_filter!(i32, array, filter_count, chunks)
        }
        DataType::Int64
        | DataType::Date64
        | DataType::Time64(_)
        | DataType::Timestamp(_, _)
        | DataType::Duration(_) => {
            dyn_build_filter!(i64, array, filter_count, chunks)
        }
        DataType::Interval(IntervalUnit::DayTime) => {
            dyn_build_filter!(days_ms, array, filter_count, chunks)
        }
        DataType::Float32 => {
            dyn_build_filter!(f32, array, filter_count, chunks)
        }
        DataType::Float64 => {
            dyn_build_filter!(f64, array, filter_count, chunks)
        }
        DataType::Utf8 => {
            let array = array.as_any().downcast_ref::<Utf8Array<i32>>().unwrap();
            let mut growable = growable::GrowableUtf8::<i32>::new(&[array], false, filter_count);
            filter_growable(&mut growable, &chunks);
            let array: Utf8Array<i32> = growable.into();
            Box::new(array)
        }
        _ => {
            let mut mutable = make_growable(&[array], false, filter_count);
            chunks
                .iter()
                .for_each(|(start, len)| mutable.extend(0, *start, *len));
            mutable.to_box()
        }
    }))
}
/// Returns a prepared function optimized to filter multiple arrays.
/// Creating this function requires time, but using it is faster than [filter] when the
/// same filter needs to be applied to multiple arrays (e.g. a multi-column `RecordBatch`).
/// WARNING: the nulls of `filter` are ignored and the value on its slot is considered.
/// Therefore, it is considered undefined behavior to pass `filter` with null values.
Returns a prepared function optimized to filter multiple arrays.
Creating this function requires time, but using it is faster than [filter] when the
same filter needs to be applied to multiple arrays .
WARNING: the nulls of `filter` are ignored and the value on its slot is considered.
Therefore, it is considered undefined behavior to pass `filter` with null values.
Returns a prepared function optimized to filter multiple arrays . Creating this function requires time but using it is faster than [ filter ] when the same filter needs to be applied to multiple arrays . WARNING : the nulls of ` filter ` are ignored and the value on its slot is considered . Therefore it is considered undefined behavior to pass ` filter ` with null values .
pub fn build_filter(filter: &BooleanArray) -> Result<Filter> {
    let iter = SlicesIterator::new(filter.values());
    let filter_count = iter.slots();
    let chunks = iter.collect::<Vec<_>>();
    Ok(Box::new(move |array: &dyn Array| match array.data_type() {
        DataType::UInt8 => {
            dyn_build_filter!(u8, array, filter_count, chunks)
        }
        DataType::UInt16 => {
            dyn_build_filter!(u16, array, filter_count, chunks)
        }
        DataType::UInt32 => {
            dyn_build_filter!(u32, array, filter_count, chunks)
        }
        DataType::UInt64 => {
            dyn_build_filter!(u64, array, filter_count, chunks)
        }
        DataType::Int8 => {
            dyn_build_filter!(i8, array, filter_count, chunks)
        }
        DataType::Int16 => {
            dyn_build_filter!(i16, array, filter_count, chunks)
        }
        DataType::Int32
        | DataType::Date32
        | DataType::Time32(_)
        | DataType::Interval(IntervalUnit::YearMonth) => {
            dyn_build_filter!(i32, array, filter_count, chunks)
        }
        DataType::Int64
        | DataType::Date64
        | DataType::Time64(_)
        | DataType::Timestamp(_, _)
        | DataType::Duration(_) => {
            dyn_build_filter!(i64, array, filter_count, chunks)
        }
        DataType::Interval(IntervalUnit::DayTime) => {
            dyn_build_filter!(days_ms, array, filter_count, chunks)
        }
        DataType::Float32 => {
            dyn_build_filter!(f32, array, filter_count, chunks)
        }
        DataType::Float64 => {
            dyn_build_filter!(f64, array, filter_count, chunks)
        }
        DataType::Utf8 => {
            let array = array.as_any().downcast_ref::<Utf8Array<i32>>().unwrap();
            let mut growable = growable::GrowableUtf8::<i32>::new(&[array], false, filter_count);
            filter_growable(&mut growable, &chunks);
            let array: Utf8Array<i32> = growable.into();
            Box::new(array)
        }
        _ => {
            let mut mutable = make_growable(&[array], false, filter_count);
            chunks
                .iter()
                .for_each(|(start, len)| mutable.extend(0, *start, *len));
            mutable.to_box()
        }
    }))
}
pub fn build_filter ( filter : & BooleanArray ) -> Result < Filter > { let iter = SlicesIterator :: new ( filter . values ( ) ) ; let filter_count = iter . slots ( ) ; let chunks = iter . collect :: < Vec < _ > > ( ) ; Ok ( Box :: new ( move | array : & dyn Array | match array . data_type ( ) { DataType :: UInt8 => { dyn_build_filter ! ( u8 array filter_count chunks ) } DataType :: UInt16 => { dyn_build_filter ! ( u16 array filter_count chunks ) } DataType :: UInt32 => { dyn_build_filter ! ( u32 array filter_count chunks ) } DataType :: UInt64 => { dyn_build_filter ! ( u64 array filter_count chunks ) } DataType :: Int8 => { dyn_build_filter ! ( i8 array filter_count chunks ) } DataType :: Int16 => { dyn_build_filter ! ( i16 array filter_count chunks ) } DataType :: Int32 | DataType :: Date32 | DataType :: Time32 ( _ ) | DataType :: Interval ( IntervalUnit :: YearMonth ) => { dyn_build_filter ! ( i32 array filter_count chunks ) } DataType :: Int64 | DataType :: Date64 | DataType :: Time64 ( _ ) | DataType :: Timestamp ( _ , _ ) | DataType :: Duration ( _ ) => { dyn_build_filter ! ( i64 array filter_count chunks ) } DataType :: Interval ( IntervalUnit :: DayTime ) => { dyn_build_filter ! ( days_ms array filter_count chunks ) } DataType :: Float32 => { dyn_build_filter ! ( f32 array filter_count chunks ) } DataType :: Float64 => { dyn_build_filter ! ( f64 array filter_count chunks ) } DataType :: Utf8 => { let array = array . as_any ( ) . downcast_ref :: < Utf8Array < i32 > > ( ) . unwrap ( ) ; let mut growable = growable :: GrowableUtf8 :: < i32 > :: new ( & [ array ] , false , filter_count ) ; filter_growable ( & mut growable , & chunks ) ; let array : Utf8Array < i32 > = growable . into ( ) ; Box :: new ( array ) } _ => { let mut mutable = make_growable ( & [ array ] , false , filter_count ) ; chunks . iter ( ) . for_each ( | ( start , len ) | mutable . extend ( 0 , * start , * len ) ) ; mutable . to_box ( ) } } ) ) }
Returns a prepared function optimized to filter multiple arrays.
Returns a prepared function optimized to filter multiple arrays .
filter
&BooleanArray
filter
&BooleanArray