use crate::array::print_long_array;
use crate::iterator::FixedSizeBinaryIter;
use crate::{Array, ArrayAccessor, ArrayRef, FixedSizeListArray, Scalar};
use arrow_buffer::buffer::NullBuffer;
use arrow_buffer::{bit_util, ArrowNativeType, BooleanBuffer, Buffer, MutableBuffer};
use arrow_data::{ArrayData, ArrayDataBuilder};
use arrow_schema::{ArrowError, DataType};
use std::any::Any;
use std::sync::Arc;
#[derive(Clone)]
pub struct FixedSizeBinaryArray {
data_type: DataType, value_data: Buffer,
nulls: Option<NullBuffer>,
len: usize,
value_length: i32,
}
impl FixedSizeBinaryArray {
pub fn new(size: i32, values: Buffer, nulls: Option<NullBuffer>) -> Self {
Self::try_new(size, values, nulls).unwrap()
}
pub fn new_scalar(value: impl AsRef<[u8]>) -> Scalar<Self> {
let v = value.as_ref();
Scalar::new(Self::new(v.len() as _, Buffer::from(v), None))
}
pub fn try_new(
size: i32,
values: Buffer,
nulls: Option<NullBuffer>,
) -> Result<Self, ArrowError> {
let data_type = DataType::FixedSizeBinary(size);
let s = size.to_usize().ok_or_else(|| {
ArrowError::InvalidArgumentError(format!("Size cannot be negative, got {}", size))
})?;
let len = values.len() / s;
if let Some(n) = nulls.as_ref() {
if n.len() != len {
return Err(ArrowError::InvalidArgumentError(format!(
"Incorrect length of null buffer for FixedSizeBinaryArray, expected {} got {}",
len,
n.len(),
)));
}
}
Ok(Self {
data_type,
value_data: values,
value_length: size,
nulls,
len,
})
}
pub fn new_null(size: i32, len: usize) -> Self {
let capacity = size.to_usize().unwrap().checked_mul(len).unwrap();
Self {
data_type: DataType::FixedSizeBinary(size),
value_data: MutableBuffer::new(capacity).into(),
nulls: Some(NullBuffer::new_null(len)),
value_length: size,
len,
}
}
pub fn into_parts(self) -> (i32, Buffer, Option<NullBuffer>) {
(self.value_length, self.value_data, self.nulls)
}
pub fn value(&self, i: usize) -> &[u8] {
assert!(
i < self.len(),
"Trying to access an element at index {} from a FixedSizeBinaryArray of length {}",
i,
self.len()
);
let offset = i + self.offset();
unsafe {
let pos = self.value_offset_at(offset);
std::slice::from_raw_parts(
self.value_data.as_ptr().offset(pos as isize),
(self.value_offset_at(offset + 1) - pos) as usize,
)
}
}
pub unsafe fn value_unchecked(&self, i: usize) -> &[u8] {
let offset = i + self.offset();
let pos = self.value_offset_at(offset);
std::slice::from_raw_parts(
self.value_data.as_ptr().offset(pos as isize),
(self.value_offset_at(offset + 1) - pos) as usize,
)
}
#[inline]
pub fn value_offset(&self, i: usize) -> i32 {
self.value_offset_at(self.offset() + i)
}
#[inline]
pub fn value_length(&self) -> i32 {
self.value_length
}
#[inline]
pub fn values(&self) -> &Buffer {
&self.value_data
}
pub fn value_data(&self) -> &[u8] {
self.value_data.as_slice()
}
pub fn slice(&self, offset: usize, len: usize) -> Self {
assert!(
offset.saturating_add(len) <= self.len,
"the length + offset of the sliced FixedSizeBinaryArray cannot exceed the existing length"
);
let size = self.value_length as usize;
Self {
data_type: self.data_type.clone(),
nulls: self.nulls.as_ref().map(|n| n.slice(offset, len)),
value_length: self.value_length,
value_data: self.value_data.slice_with_length(offset * size, len * size),
len,
}
}
#[deprecated(
note = "This function will fail if the iterator produces only None values; prefer `try_from_sparse_iter_with_size`"
)]
pub fn try_from_sparse_iter<T, U>(mut iter: T) -> Result<Self, ArrowError>
where
T: Iterator<Item = Option<U>>,
U: AsRef<[u8]>,
{
let mut len = 0;
let mut size = None;
let mut byte = 0;
let iter_size_hint = iter.size_hint().0;
let mut null_buf = MutableBuffer::new(bit_util::ceil(iter_size_hint, 8));
let mut buffer = MutableBuffer::new(0);
let mut prepend = 0;
iter.try_for_each(|item| -> Result<(), ArrowError> {
if byte == 0 {
null_buf.push(0u8);
byte = 8;
}
byte -= 1;
if let Some(slice) = item {
let slice = slice.as_ref();
if let Some(size) = size {
if size != slice.len() {
return Err(ArrowError::InvalidArgumentError(format!(
"Nested array size mismatch: one is {}, and the other is {}",
size,
slice.len()
)));
}
} else {
let len = slice.len();
size = Some(len);
buffer.reserve(iter_size_hint * len);
buffer.extend_zeros(slice.len() * prepend);
}
bit_util::set_bit(null_buf.as_slice_mut(), len);
buffer.extend_from_slice(slice);
} else if let Some(size) = size {
buffer.extend_zeros(size);
} else {
prepend += 1;
}
len += 1;
Ok(())
})?;
if len == 0 {
return Err(ArrowError::InvalidArgumentError(
"Input iterable argument has no data".to_owned(),
));
}
let null_buf = BooleanBuffer::new(null_buf.into(), 0, len);
let nulls = Some(NullBuffer::new(null_buf)).filter(|n| n.null_count() > 0);
let size = size.unwrap_or(0) as i32;
Ok(Self {
data_type: DataType::FixedSizeBinary(size),
value_data: buffer.into(),
nulls,
value_length: size,
len,
})
}
pub fn try_from_sparse_iter_with_size<T, U>(mut iter: T, size: i32) -> Result<Self, ArrowError>
where
T: Iterator<Item = Option<U>>,
U: AsRef<[u8]>,
{
let mut len = 0;
let mut byte = 0;
let iter_size_hint = iter.size_hint().0;
let mut null_buf = MutableBuffer::new(bit_util::ceil(iter_size_hint, 8));
let mut buffer = MutableBuffer::new(iter_size_hint * (size as usize));
iter.try_for_each(|item| -> Result<(), ArrowError> {
if byte == 0 {
null_buf.push(0u8);
byte = 8;
}
byte -= 1;
if let Some(slice) = item {
let slice = slice.as_ref();
if size as usize != slice.len() {
return Err(ArrowError::InvalidArgumentError(format!(
"Nested array size mismatch: one is {}, and the other is {}",
size,
slice.len()
)));
}
bit_util::set_bit(null_buf.as_slice_mut(), len);
buffer.extend_from_slice(slice);
} else {
buffer.extend_zeros(size as usize);
}
len += 1;
Ok(())
})?;
let null_buf = BooleanBuffer::new(null_buf.into(), 0, len);
let nulls = Some(NullBuffer::new(null_buf)).filter(|n| n.null_count() > 0);
Ok(Self {
data_type: DataType::FixedSizeBinary(size),
value_data: buffer.into(),
nulls,
len,
value_length: size,
})
}
pub fn try_from_iter<T, U>(mut iter: T) -> Result<Self, ArrowError>
where
T: Iterator<Item = U>,
U: AsRef<[u8]>,
{
let mut len = 0;
let mut size = None;
let iter_size_hint = iter.size_hint().0;
let mut buffer = MutableBuffer::new(0);
iter.try_for_each(|item| -> Result<(), ArrowError> {
let slice = item.as_ref();
if let Some(size) = size {
if size != slice.len() {
return Err(ArrowError::InvalidArgumentError(format!(
"Nested array size mismatch: one is {}, and the other is {}",
size,
slice.len()
)));
}
} else {
let len = slice.len();
size = Some(len);
buffer.reserve(iter_size_hint * len);
}
buffer.extend_from_slice(slice);
len += 1;
Ok(())
})?;
if len == 0 {
return Err(ArrowError::InvalidArgumentError(
"Input iterable argument has no data".to_owned(),
));
}
let size = size.unwrap_or(0).try_into().unwrap();
Ok(Self {
data_type: DataType::FixedSizeBinary(size),
value_data: buffer.into(),
nulls: None,
value_length: size,
len,
})
}
#[inline]
fn value_offset_at(&self, i: usize) -> i32 {
self.value_length * i as i32
}
pub fn iter(&self) -> FixedSizeBinaryIter<'_> {
FixedSizeBinaryIter::new(self)
}
}
impl From<ArrayData> for FixedSizeBinaryArray {
fn from(data: ArrayData) -> Self {
assert_eq!(
data.buffers().len(),
1,
"FixedSizeBinaryArray data should contain 1 buffer only (values)"
);
let value_length = match data.data_type() {
DataType::FixedSizeBinary(len) => *len,
_ => panic!("Expected data type to be FixedSizeBinary"),
};
let size = value_length as usize;
let value_data =
data.buffers()[0].slice_with_length(data.offset() * size, data.len() * size);
Self {
data_type: data.data_type().clone(),
nulls: data.nulls().cloned(),
len: data.len(),
value_data,
value_length,
}
}
}
impl From<FixedSizeBinaryArray> for ArrayData {
fn from(array: FixedSizeBinaryArray) -> Self {
let builder = ArrayDataBuilder::new(array.data_type)
.len(array.len)
.buffers(vec![array.value_data])
.nulls(array.nulls);
unsafe { builder.build_unchecked() }
}
}
impl From<FixedSizeListArray> for FixedSizeBinaryArray {
fn from(v: FixedSizeListArray) -> Self {
let value_len = v.value_length();
let v = v.into_data();
assert_eq!(
v.child_data().len(),
1,
"FixedSizeBinaryArray can only be created from list array of u8 values \
(i.e. FixedSizeList<PrimitiveArray<u8>>)."
);
let child_data = &v.child_data()[0];
assert_eq!(
child_data.child_data().len(),
0,
"FixedSizeBinaryArray can only be created from list array of u8 values \
(i.e. FixedSizeList<PrimitiveArray<u8>>)."
);
assert_eq!(
child_data.data_type(),
&DataType::UInt8,
"FixedSizeBinaryArray can only be created from FixedSizeList<u8> arrays, mismatched data types."
);
assert_eq!(
child_data.null_count(),
0,
"The child array cannot contain null values."
);
let builder = ArrayData::builder(DataType::FixedSizeBinary(value_len))
.len(v.len())
.offset(v.offset())
.add_buffer(child_data.buffers()[0].slice(child_data.offset()))
.nulls(v.nulls().cloned());
let data = unsafe { builder.build_unchecked() };
Self::from(data)
}
}
impl From<Vec<Option<&[u8]>>> for FixedSizeBinaryArray {
fn from(v: Vec<Option<&[u8]>>) -> Self {
#[allow(deprecated)]
Self::try_from_sparse_iter(v.into_iter()).unwrap()
}
}
impl From<Vec<&[u8]>> for FixedSizeBinaryArray {
fn from(v: Vec<&[u8]>) -> Self {
Self::try_from_iter(v.into_iter()).unwrap()
}
}
impl<const N: usize> From<Vec<&[u8; N]>> for FixedSizeBinaryArray {
fn from(v: Vec<&[u8; N]>) -> Self {
Self::try_from_iter(v.into_iter()).unwrap()
}
}
impl std::fmt::Debug for FixedSizeBinaryArray {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, "FixedSizeBinaryArray<{}>\n[\n", self.value_length())?;
print_long_array(self, f, |array, index, f| {
std::fmt::Debug::fmt(&array.value(index), f)
})?;
write!(f, "]")
}
}
impl Array for FixedSizeBinaryArray {
fn as_any(&self) -> &dyn Any {
self
}
fn to_data(&self) -> ArrayData {
self.clone().into()
}
fn into_data(self) -> ArrayData {
self.into()
}
fn data_type(&self) -> &DataType {
&self.data_type
}
fn slice(&self, offset: usize, length: usize) -> ArrayRef {
Arc::new(self.slice(offset, length))
}
fn len(&self) -> usize {
self.len
}
fn is_empty(&self) -> bool {
self.len == 0
}
fn offset(&self) -> usize {
0
}
fn nulls(&self) -> Option<&NullBuffer> {
self.nulls.as_ref()
}
fn get_buffer_memory_size(&self) -> usize {
let mut sum = self.value_data.capacity();
if let Some(n) = &self.nulls {
sum += n.buffer().capacity();
}
sum
}
fn get_array_memory_size(&self) -> usize {
std::mem::size_of::<Self>() + self.get_buffer_memory_size()
}
}
impl<'a> ArrayAccessor for &'a FixedSizeBinaryArray {
type Item = &'a [u8];
fn value(&self, index: usize) -> Self::Item {
FixedSizeBinaryArray::value(self, index)
}
unsafe fn value_unchecked(&self, index: usize) -> Self::Item {
FixedSizeBinaryArray::value_unchecked(self, index)
}
}
impl<'a> IntoIterator for &'a FixedSizeBinaryArray {
type Item = Option<&'a [u8]>;
type IntoIter = FixedSizeBinaryIter<'a>;
fn into_iter(self) -> Self::IntoIter {
FixedSizeBinaryIter::<'a>::new(self)
}
}
#[cfg(test)]
mod tests {
use crate::RecordBatch;
use arrow_schema::{Field, Schema};
use super::*;
#[test]
fn test_fixed_size_binary_array() {
let values: [u8; 15] = *b"hellotherearrow";
let array_data = ArrayData::builder(DataType::FixedSizeBinary(5))
.len(3)
.add_buffer(Buffer::from(&values[..]))
.build()
.unwrap();
let fixed_size_binary_array = FixedSizeBinaryArray::from(array_data);
assert_eq!(3, fixed_size_binary_array.len());
assert_eq!(0, fixed_size_binary_array.null_count());
assert_eq!(
[b'h', b'e', b'l', b'l', b'o'],
fixed_size_binary_array.value(0)
);
assert_eq!(
[b't', b'h', b'e', b'r', b'e'],
fixed_size_binary_array.value(1)
);
assert_eq!(
[b'a', b'r', b'r', b'o', b'w'],
fixed_size_binary_array.value(2)
);
assert_eq!(5, fixed_size_binary_array.value_length());
assert_eq!(10, fixed_size_binary_array.value_offset(2));
for i in 0..3 {
assert!(fixed_size_binary_array.is_valid(i));
assert!(!fixed_size_binary_array.is_null(i));
}
let array_data = ArrayData::builder(DataType::FixedSizeBinary(5))
.len(2)
.offset(1)
.add_buffer(Buffer::from(&values[..]))
.build()
.unwrap();
let fixed_size_binary_array = FixedSizeBinaryArray::from(array_data);
assert_eq!(
[b't', b'h', b'e', b'r', b'e'],
fixed_size_binary_array.value(0)
);
assert_eq!(
[b'a', b'r', b'r', b'o', b'w'],
fixed_size_binary_array.value(1)
);
assert_eq!(2, fixed_size_binary_array.len());
assert_eq!(0, fixed_size_binary_array.value_offset(0));
assert_eq!(5, fixed_size_binary_array.value_length());
assert_eq!(5, fixed_size_binary_array.value_offset(1));
}
#[test]
fn test_fixed_size_binary_array_from_fixed_size_list_array() {
let values = [0_u8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13];
let values_data = ArrayData::builder(DataType::UInt8)
.len(12)
.offset(2)
.add_buffer(Buffer::from_slice_ref(values))
.build()
.unwrap();
let array_data = unsafe {
ArrayData::builder(DataType::FixedSizeList(
Arc::new(Field::new("item", DataType::UInt8, false)),
4,
))
.len(2)
.offset(1)
.add_child_data(values_data)
.null_bit_buffer(Some(Buffer::from_slice_ref([0b101])))
.build_unchecked()
};
let list_array = FixedSizeListArray::from(array_data);
let binary_array = FixedSizeBinaryArray::from(list_array);
assert_eq!(2, binary_array.len());
assert_eq!(1, binary_array.null_count());
assert!(binary_array.is_null(0));
assert!(binary_array.is_valid(1));
assert_eq!(&[10, 11, 12, 13], binary_array.value(1));
}
#[test]
#[should_panic(
expected = "FixedSizeBinaryArray can only be created from FixedSizeList<u8> arrays"
)]
#[cfg(not(feature = "force_validate"))]
fn test_fixed_size_binary_array_from_incorrect_fixed_size_list_array() {
let values: [u32; 12] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];
let values_data = ArrayData::builder(DataType::UInt32)
.len(12)
.add_buffer(Buffer::from_slice_ref(values))
.build()
.unwrap();
let array_data = unsafe {
ArrayData::builder(DataType::FixedSizeList(
Arc::new(Field::new("item", DataType::Binary, false)),
4,
))
.len(3)
.add_child_data(values_data)
.build_unchecked()
};
let list_array = FixedSizeListArray::from(array_data);
drop(FixedSizeBinaryArray::from(list_array));
}
#[test]
#[should_panic(expected = "The child array cannot contain null values.")]
fn test_fixed_size_binary_array_from_fixed_size_list_array_with_child_nulls_failed() {
let values = [0_u8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];
let values_data = ArrayData::builder(DataType::UInt8)
.len(12)
.add_buffer(Buffer::from_slice_ref(values))
.null_bit_buffer(Some(Buffer::from_slice_ref([0b101010101010])))
.build()
.unwrap();
let array_data = unsafe {
ArrayData::builder(DataType::FixedSizeList(
Arc::new(Field::new("item", DataType::UInt8, false)),
4,
))
.len(3)
.add_child_data(values_data)
.build_unchecked()
};
let list_array = FixedSizeListArray::from(array_data);
drop(FixedSizeBinaryArray::from(list_array));
}
#[test]
fn test_fixed_size_binary_array_fmt_debug() {
let values: [u8; 15] = *b"hellotherearrow";
let array_data = ArrayData::builder(DataType::FixedSizeBinary(5))
.len(3)
.add_buffer(Buffer::from(&values[..]))
.build()
.unwrap();
let arr = FixedSizeBinaryArray::from(array_data);
assert_eq!(
"FixedSizeBinaryArray<5>\n[\n [104, 101, 108, 108, 111],\n [116, 104, 101, 114, 101],\n [97, 114, 114, 111, 119],\n]",
format!("{arr:?}")
);
}
#[test]
fn test_fixed_size_binary_array_from_iter() {
let input_arg = vec![vec![1, 2], vec![3, 4], vec![5, 6]];
let arr = FixedSizeBinaryArray::try_from_iter(input_arg.into_iter()).unwrap();
assert_eq!(2, arr.value_length());
assert_eq!(3, arr.len())
}
#[test]
fn test_all_none_fixed_size_binary_array_from_sparse_iter() {
let none_option: Option<[u8; 32]> = None;
let input_arg = vec![none_option, none_option, none_option];
#[allow(deprecated)]
let arr = FixedSizeBinaryArray::try_from_sparse_iter(input_arg.into_iter()).unwrap();
assert_eq!(0, arr.value_length());
assert_eq!(3, arr.len())
}
#[test]
fn test_fixed_size_binary_array_from_sparse_iter() {
let input_arg = vec![
None,
Some(vec![7, 8]),
Some(vec![9, 10]),
None,
Some(vec![13, 14]),
];
#[allow(deprecated)]
let arr = FixedSizeBinaryArray::try_from_sparse_iter(input_arg.iter().cloned()).unwrap();
assert_eq!(2, arr.value_length());
assert_eq!(5, arr.len());
let arr =
FixedSizeBinaryArray::try_from_sparse_iter_with_size(input_arg.into_iter(), 2).unwrap();
assert_eq!(2, arr.value_length());
assert_eq!(5, arr.len());
}
#[test]
fn test_fixed_size_binary_array_from_sparse_iter_with_size_all_none() {
let input_arg = vec![None, None, None, None, None] as Vec<Option<Vec<u8>>>;
let arr = FixedSizeBinaryArray::try_from_sparse_iter_with_size(input_arg.into_iter(), 16)
.unwrap();
assert_eq!(16, arr.value_length());
assert_eq!(5, arr.len())
}
#[test]
fn test_fixed_size_binary_array_from_vec() {
let values = vec!["one".as_bytes(), b"two", b"six", b"ten"];
let array = FixedSizeBinaryArray::from(values);
assert_eq!(array.len(), 4);
assert_eq!(array.null_count(), 0);
assert_eq!(array.logical_null_count(), 0);
assert_eq!(array.value(0), b"one");
assert_eq!(array.value(1), b"two");
assert_eq!(array.value(2), b"six");
assert_eq!(array.value(3), b"ten");
assert!(!array.is_null(0));
assert!(!array.is_null(1));
assert!(!array.is_null(2));
assert!(!array.is_null(3));
}
#[test]
#[should_panic(expected = "Nested array size mismatch: one is 3, and the other is 5")]
fn test_fixed_size_binary_array_from_vec_incorrect_length() {
let values = vec!["one".as_bytes(), b"two", b"three", b"four"];
let _ = FixedSizeBinaryArray::from(values);
}
#[test]
fn test_fixed_size_binary_array_from_opt_vec() {
let values = vec![
Some("one".as_bytes()),
Some(b"two"),
None,
Some(b"six"),
Some(b"ten"),
];
let array = FixedSizeBinaryArray::from(values);
assert_eq!(array.len(), 5);
assert_eq!(array.value(0), b"one");
assert_eq!(array.value(1), b"two");
assert_eq!(array.value(3), b"six");
assert_eq!(array.value(4), b"ten");
assert!(!array.is_null(0));
assert!(!array.is_null(1));
assert!(array.is_null(2));
assert!(!array.is_null(3));
assert!(!array.is_null(4));
}
#[test]
#[should_panic(expected = "Nested array size mismatch: one is 3, and the other is 5")]
fn test_fixed_size_binary_array_from_opt_vec_incorrect_length() {
let values = vec![
Some("one".as_bytes()),
Some(b"two"),
None,
Some(b"three"),
Some(b"four"),
];
let _ = FixedSizeBinaryArray::from(values);
}
#[test]
fn fixed_size_binary_array_all_null() {
let data = vec![None] as Vec<Option<String>>;
let array =
FixedSizeBinaryArray::try_from_sparse_iter_with_size(data.into_iter(), 0).unwrap();
array
.into_data()
.validate_full()
.expect("All null array has valid array data");
}
#[test]
fn fixed_size_binary_array_all_null_in_batch_with_schema() {
let schema = Schema::new(vec![Field::new("a", DataType::FixedSizeBinary(2), true)]);
let none_option: Option<[u8; 2]> = None;
let item = FixedSizeBinaryArray::try_from_sparse_iter_with_size(
vec![none_option, none_option, none_option].into_iter(),
2,
)
.unwrap();
RecordBatch::try_new(Arc::new(schema), vec![Arc::new(item)]).unwrap();
}
#[test]
#[should_panic(
expected = "Trying to access an element at index 4 from a FixedSizeBinaryArray of length 3"
)]
fn test_fixed_size_binary_array_get_value_index_out_of_bound() {
let values = vec![Some("one".as_bytes()), Some(b"two"), None];
let array = FixedSizeBinaryArray::from(values);
array.value(4);
}
#[test]
fn test_constructors() {
let buffer = Buffer::from_vec(vec![0_u8; 10]);
let a = FixedSizeBinaryArray::new(2, buffer.clone(), None);
assert_eq!(a.len(), 5);
let nulls = NullBuffer::new_null(5);
FixedSizeBinaryArray::new(2, buffer.clone(), Some(nulls));
let a = FixedSizeBinaryArray::new(3, buffer.clone(), None);
assert_eq!(a.len(), 3);
let nulls = NullBuffer::new_null(3);
FixedSizeBinaryArray::new(3, buffer.clone(), Some(nulls));
let err = FixedSizeBinaryArray::try_new(-1, buffer.clone(), None).unwrap_err();
assert_eq!(
err.to_string(),
"Invalid argument error: Size cannot be negative, got -1"
);
let nulls = NullBuffer::new_null(3);
let err = FixedSizeBinaryArray::try_new(2, buffer, Some(nulls)).unwrap_err();
assert_eq!(err.to_string(), "Invalid argument error: Incorrect length of null buffer for FixedSizeBinaryArray, expected 5 got 3");
}
}