Struct arrow::array::builder::BooleanBuilder
source · pub struct BooleanBuilder { /* private fields */ }
Expand description
Builder for BooleanArray
§Example
Create a BooleanArray
from a BooleanBuilder
let mut b = BooleanBuilder::new();
b.append_value(true);
b.append_null();
b.append_value(false);
b.append_value(true);
let arr = b.finish();
assert_eq!(4, arr.len());
assert_eq!(1, arr.null_count());
assert_eq!(true, arr.value(0));
assert!(arr.is_valid(0));
assert!(!arr.is_null(0));
assert!(!arr.is_valid(1));
assert!(arr.is_null(1));
assert_eq!(false, arr.value(2));
assert!(arr.is_valid(2));
assert!(!arr.is_null(2));
assert_eq!(true, arr.value(3));
assert!(arr.is_valid(3));
assert!(!arr.is_null(3));
Implementations§
source§impl BooleanBuilder
impl BooleanBuilder
sourcepub fn new() -> BooleanBuilder
pub fn new() -> BooleanBuilder
Creates a new boolean builder
sourcepub fn with_capacity(capacity: usize) -> BooleanBuilder
pub fn with_capacity(capacity: usize) -> BooleanBuilder
Creates a new boolean builder with space for capacity
elements without re-allocating
sourcepub fn capacity(&self) -> usize
pub fn capacity(&self) -> usize
Returns the capacity of this builder measured in slots of type T
sourcepub fn append_value(&mut self, v: bool)
pub fn append_value(&mut self, v: bool)
Appends a value of type T
into the builder
sourcepub fn append_null(&mut self)
pub fn append_null(&mut self)
Appends a null slot into the builder
sourcepub fn append_nulls(&mut self, n: usize)
pub fn append_nulls(&mut self, n: usize)
Appends n
null
s into the builder.
sourcepub fn append_option(&mut self, v: Option<bool>)
pub fn append_option(&mut self, v: Option<bool>)
Appends an Option<T>
into the builder
sourcepub fn append_slice(&mut self, v: &[bool])
pub fn append_slice(&mut self, v: &[bool])
Appends a slice of type T
into the builder
sourcepub fn append_values(
&mut self,
values: &[bool],
is_valid: &[bool],
) -> Result<(), ArrowError>
pub fn append_values( &mut self, values: &[bool], is_valid: &[bool], ) -> Result<(), ArrowError>
Appends values from a slice of type T
and a validity boolean slice.
Returns an error if the slices are of different lengths
sourcepub fn finish(&mut self) -> BooleanArray
pub fn finish(&mut self) -> BooleanArray
Builds the BooleanArray and reset this builder.
sourcepub fn finish_cloned(&self) -> BooleanArray
pub fn finish_cloned(&self) -> BooleanArray
Builds the BooleanArray without resetting the builder.
sourcepub fn validity_slice(&self) -> Option<&[u8]>
pub fn validity_slice(&self) -> Option<&[u8]>
Returns the current null buffer as a slice
Trait Implementations§
source§impl ArrayBuilder for BooleanBuilder
impl ArrayBuilder for BooleanBuilder
source§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Returns the builder as a mutable Any
reference.
source§fn into_box_any(self: Box<BooleanBuilder>) -> Box<dyn Any>
fn into_box_any(self: Box<BooleanBuilder>) -> Box<dyn Any>
Returns the boxed builder as a box of Any
.
source§fn finish_cloned(&self) -> Arc<dyn Array>
fn finish_cloned(&self) -> Arc<dyn Array>
Builds the array without resetting the builder.
source§impl Debug for BooleanBuilder
impl Debug for BooleanBuilder
source§impl Default for BooleanBuilder
impl Default for BooleanBuilder
source§fn default() -> BooleanBuilder
fn default() -> BooleanBuilder
source§impl Extend<Option<bool>> for BooleanBuilder
impl Extend<Option<bool>> for BooleanBuilder
source§fn extend<T>(&mut self, iter: T)
fn extend<T>(&mut self, iter: T)
source§fn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
)source§fn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
extend_one
)