forked from apache/arrow-rs
/
mod.rs
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/
mod.rs
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
use super::{
data::{into_buffers, new_buffers},
ArrayData, ArrayDataBuilder, OffsetSizeTrait,
};
use crate::{
buffer::MutableBuffer,
datatypes::DataType,
error::{ArrowError, Result},
util::bit_util,
};
use half::f16;
use std::mem;
mod boolean;
mod fixed_binary;
mod fixed_size_list;
mod list;
mod null;
mod primitive;
mod structure;
mod union;
mod utils;
mod variable_size;
type ExtendNullBits<'a> = Box<dyn Fn(&mut _MutableArrayData, usize, usize) + 'a>;
// function that extends `[start..start+len]` to the mutable array.
// this is dynamic because different data_types influence how buffers and children are extended.
type Extend<'a> = Box<dyn Fn(&mut _MutableArrayData, usize, usize, usize) + 'a>;
type ExtendNulls = Box<dyn Fn(&mut _MutableArrayData, usize)>;
/// A mutable [ArrayData] that knows how to freeze itself into an [ArrayData].
/// This is just a data container.
#[derive(Debug)]
struct _MutableArrayData<'a> {
pub data_type: DataType,
pub null_count: usize,
pub len: usize,
pub null_buffer: MutableBuffer,
// arrow specification only allows up to 3 buffers (2 ignoring the nulls above).
// Thus, we place them in the stack to avoid bound checks and greater data locality.
pub buffer1: MutableBuffer,
pub buffer2: MutableBuffer,
pub child_data: Vec<MutableArrayData<'a>>,
}
impl<'a> _MutableArrayData<'a> {
fn freeze(self, dictionary: Option<ArrayData>) -> ArrayDataBuilder {
let buffers = into_buffers(&self.data_type, self.buffer1, self.buffer2);
let child_data = match self.data_type {
DataType::Dictionary(_, _) => vec![dictionary.unwrap()],
_ => {
let mut child_data = Vec::with_capacity(self.child_data.len());
for child in self.child_data {
child_data.push(child.freeze());
}
child_data
}
};
ArrayDataBuilder::new(self.data_type)
.offset(0)
.len(self.len)
.null_count(self.null_count)
.buffers(buffers)
.child_data(child_data)
.null_bit_buffer((self.null_count > 0).then(|| self.null_buffer.into()))
}
}
fn build_extend_null_bits(array: &ArrayData, use_nulls: bool) -> ExtendNullBits {
if let Some(bitmap) = array.null_bitmap() {
let bytes = bitmap.bits.as_slice();
Box::new(move |mutable, start, len| {
utils::resize_for_bits(&mut mutable.null_buffer, mutable.len + len);
mutable.null_count += crate::util::bit_mask::set_bits(
mutable.null_buffer.as_slice_mut(),
bytes,
mutable.len,
array.offset() + start,
len,
);
})
} else if use_nulls {
Box::new(|mutable, _, len| {
utils::resize_for_bits(&mut mutable.null_buffer, mutable.len + len);
let write_data = mutable.null_buffer.as_slice_mut();
let offset = mutable.len;
(0..len).for_each(|i| {
bit_util::set_bit(write_data, offset + i);
});
})
} else {
Box::new(|_, _, _| {})
}
}
/// Struct to efficiently and interactively create an [ArrayData] from an existing [ArrayData] by
/// copying chunks.
/// The main use case of this struct is to perform unary operations to arrays of arbitrary types, such as `filter` and `take`.
/// # Example:
///
/// ```
/// use arrow::{array::{Int32Array, Array, MutableArrayData}};
///
/// let array = Int32Array::from(vec![1, 2, 3, 4, 5]);
/// let array = array.data();
/// // Create a new `MutableArrayData` from an array and with a capacity of 4.
/// // Capacity here is equivalent to `Vec::with_capacity`
/// let arrays = vec![array];
/// let mut mutable = MutableArrayData::new(arrays, false, 4);
/// mutable.extend(0, 1, 3); // extend from the slice [1..3], [2,3]
/// mutable.extend(0, 0, 3); // extend from the slice [0..3], [1,2,3]
/// // `.freeze()` to convert `MutableArrayData` into a `ArrayData`.
/// let new_array = Int32Array::from(mutable.freeze());
/// assert_eq!(Int32Array::from(vec![2, 3, 1, 2, 3]), new_array);
/// ```
pub struct MutableArrayData<'a> {
#[allow(dead_code)]
arrays: Vec<&'a ArrayData>,
// The attributes in [_MutableArrayData] cannot be in [MutableArrayData] due to
// mutability invariants (interior mutability):
// [MutableArrayData] contains a function that can only mutate [_MutableArrayData], not
// [MutableArrayData] itself
data: _MutableArrayData<'a>,
// the child data of the `Array` in Dictionary arrays.
// This is not stored in `MutableArrayData` because these values constant and only needed
// at the end, when freezing [_MutableArrayData].
dictionary: Option<ArrayData>,
// function used to extend values from arrays. This function's lifetime is bound to the array
// because it reads values from it.
extend_values: Vec<Extend<'a>>,
// function used to extend nulls from arrays. This function's lifetime is bound to the array
// because it reads nulls from it.
extend_null_bits: Vec<ExtendNullBits<'a>>,
// function used to extend nulls.
// this is independent of the arrays and therefore has no lifetime.
extend_nulls: ExtendNulls,
}
impl<'a> std::fmt::Debug for MutableArrayData<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
// ignores the closures.
f.debug_struct("MutableArrayData")
.field("data", &self.data)
.finish()
}
}
/// Builds an extend that adds `offset` to the source primitive
/// Additionally validates that `max` fits into the
/// the underlying primitive returning None if not
fn build_extend_dictionary(
array: &ArrayData,
offset: usize,
max: usize,
) -> Option<Extend> {
use crate::datatypes::*;
macro_rules! validate_and_build {
($dt: ty) => {{
let _: $dt = max.try_into().ok()?;
let offset: $dt = offset.try_into().ok()?;
Some(primitive::build_extend_with_offset(array, offset))
}};
}
match array.data_type() {
DataType::Dictionary(child_data_type, _) => match child_data_type.as_ref() {
DataType::UInt8 => validate_and_build!(u8),
DataType::UInt16 => validate_and_build!(u16),
DataType::UInt32 => validate_and_build!(u32),
DataType::UInt64 => validate_and_build!(u64),
DataType::Int8 => validate_and_build!(i8),
DataType::Int16 => validate_and_build!(i16),
DataType::Int32 => validate_and_build!(i32),
DataType::Int64 => validate_and_build!(i64),
_ => unreachable!(),
},
_ => None,
}
}
fn build_extend(array: &ArrayData) -> Extend {
use crate::datatypes::*;
match array.data_type() {
DataType::Decimal128(_, _) => primitive::build_extend::<i128>(array),
DataType::Null => null::build_extend(array),
DataType::Boolean => boolean::build_extend(array),
DataType::UInt8 => primitive::build_extend::<u8>(array),
DataType::UInt16 => primitive::build_extend::<u16>(array),
DataType::UInt32 => primitive::build_extend::<u32>(array),
DataType::UInt64 => primitive::build_extend::<u64>(array),
DataType::Int8 => primitive::build_extend::<i8>(array),
DataType::Int16 => primitive::build_extend::<i16>(array),
DataType::Int32 => primitive::build_extend::<i32>(array),
DataType::Int64 => primitive::build_extend::<i64>(array),
DataType::Float32 => primitive::build_extend::<f32>(array),
DataType::Float64 => primitive::build_extend::<f64>(array),
DataType::Date32
| DataType::Time32(_)
| DataType::Interval(IntervalUnit::YearMonth) => {
primitive::build_extend::<i32>(array)
}
DataType::Date64
| DataType::Time64(_)
| DataType::Timestamp(_, _)
| DataType::Duration(_)
| DataType::Interval(IntervalUnit::DayTime) => {
primitive::build_extend::<i64>(array)
}
DataType::Interval(IntervalUnit::MonthDayNano) => {
primitive::build_extend::<i128>(array)
}
DataType::Utf8 | DataType::Binary => variable_size::build_extend::<i32>(array),
DataType::LargeUtf8 | DataType::LargeBinary => {
variable_size::build_extend::<i64>(array)
}
DataType::Map(_, _) | DataType::List(_) => list::build_extend::<i32>(array),
DataType::LargeList(_) => list::build_extend::<i64>(array),
DataType::Dictionary(_, _) => unreachable!("should use build_extend_dictionary"),
DataType::Struct(_) => structure::build_extend(array),
DataType::FixedSizeBinary(_) | DataType::Decimal256(_, _) => {
fixed_binary::build_extend(array)
}
DataType::Float16 => primitive::build_extend::<f16>(array),
DataType::FixedSizeList(_, _) => fixed_size_list::build_extend(array),
DataType::Union(_, _, mode) => match mode {
UnionMode::Sparse => union::build_extend_sparse(array),
UnionMode::Dense => union::build_extend_dense(array),
},
}
}
fn build_extend_nulls(data_type: &DataType) -> ExtendNulls {
use crate::datatypes::*;
Box::new(match data_type {
DataType::Decimal128(_, _) => primitive::extend_nulls::<i128>,
DataType::Null => null::extend_nulls,
DataType::Boolean => boolean::extend_nulls,
DataType::UInt8 => primitive::extend_nulls::<u8>,
DataType::UInt16 => primitive::extend_nulls::<u16>,
DataType::UInt32 => primitive::extend_nulls::<u32>,
DataType::UInt64 => primitive::extend_nulls::<u64>,
DataType::Int8 => primitive::extend_nulls::<i8>,
DataType::Int16 => primitive::extend_nulls::<i16>,
DataType::Int32 => primitive::extend_nulls::<i32>,
DataType::Int64 => primitive::extend_nulls::<i64>,
DataType::Float32 => primitive::extend_nulls::<f32>,
DataType::Float64 => primitive::extend_nulls::<f64>,
DataType::Date32
| DataType::Time32(_)
| DataType::Interval(IntervalUnit::YearMonth) => primitive::extend_nulls::<i32>,
DataType::Date64
| DataType::Time64(_)
| DataType::Timestamp(_, _)
| DataType::Duration(_)
| DataType::Interval(IntervalUnit::DayTime) => primitive::extend_nulls::<i64>,
DataType::Interval(IntervalUnit::MonthDayNano) => primitive::extend_nulls::<i128>,
DataType::Utf8 | DataType::Binary => variable_size::extend_nulls::<i32>,
DataType::LargeUtf8 | DataType::LargeBinary => variable_size::extend_nulls::<i64>,
DataType::Map(_, _) | DataType::List(_) => list::extend_nulls::<i32>,
DataType::LargeList(_) => list::extend_nulls::<i64>,
DataType::Dictionary(child_data_type, _) => match child_data_type.as_ref() {
DataType::UInt8 => primitive::extend_nulls::<u8>,
DataType::UInt16 => primitive::extend_nulls::<u16>,
DataType::UInt32 => primitive::extend_nulls::<u32>,
DataType::UInt64 => primitive::extend_nulls::<u64>,
DataType::Int8 => primitive::extend_nulls::<i8>,
DataType::Int16 => primitive::extend_nulls::<i16>,
DataType::Int32 => primitive::extend_nulls::<i32>,
DataType::Int64 => primitive::extend_nulls::<i64>,
_ => unreachable!(),
},
DataType::Struct(_) => structure::extend_nulls,
DataType::FixedSizeBinary(_) | DataType::Decimal256(_, _) => {
fixed_binary::extend_nulls
}
DataType::Float16 => primitive::extend_nulls::<f16>,
DataType::FixedSizeList(_, _) => fixed_size_list::extend_nulls,
DataType::Union(_, _, mode) => match mode {
UnionMode::Sparse => union::extend_nulls_sparse,
UnionMode::Dense => union::extend_nulls_dense,
},
})
}
fn preallocate_offset_and_binary_buffer<Offset: OffsetSizeTrait>(
capacity: usize,
binary_size: usize,
) -> [MutableBuffer; 2] {
// offsets
let mut buffer = MutableBuffer::new((1 + capacity) * mem::size_of::<Offset>());
// safety: `unsafe` code assumes that this buffer is initialized with one element
buffer.push(Offset::zero());
[
buffer,
MutableBuffer::new(binary_size * mem::size_of::<u8>()),
]
}
/// Define capacities of child data or data buffers.
#[derive(Debug, Clone)]
pub enum Capacities {
/// Binary, Utf8 and LargeUtf8 data types
/// Define
/// * the capacity of the array offsets
/// * the capacity of the binary/ str buffer
Binary(usize, Option<usize>),
/// List and LargeList data types
/// Define
/// * the capacity of the array offsets
/// * the capacity of the child data
List(usize, Option<Box<Capacities>>),
/// Struct type
/// * the capacity of the array
/// * the capacities of the fields
Struct(usize, Option<Vec<Capacities>>),
/// Dictionary type
/// * the capacity of the array/keys
/// * the capacity of the values
Dictionary(usize, Option<Box<Capacities>>),
/// Don't preallocate inner buffers and rely on array growth strategy
Array(usize),
}
impl<'a> MutableArrayData<'a> {
/// returns a new [MutableArrayData] with capacity to `capacity` slots and specialized to create an
/// [ArrayData] from multiple `arrays`.
///
/// `use_nulls` is a flag used to optimize insertions. It should be `false` if the only source of nulls
/// are the arrays themselves and `true` if the user plans to call [MutableArrayData::extend_nulls].
/// In other words, if `use_nulls` is `false`, calling [MutableArrayData::extend_nulls] should not be used.
pub fn new(arrays: Vec<&'a ArrayData>, use_nulls: bool, capacity: usize) -> Self {
Self::with_capacities(arrays, use_nulls, Capacities::Array(capacity))
}
/// Similar to [MutableArrayData::new], but lets users define the preallocated capacities of the array.
/// See also [MutableArrayData::new] for more information on the arguments.
///
/// # Panic
/// This function panics if the given `capacities` don't match the data type of `arrays`. Or when
/// a [Capacities] variant is not yet supported.
pub fn with_capacities(
arrays: Vec<&'a ArrayData>,
use_nulls: bool,
capacities: Capacities,
) -> Self {
let data_type = arrays[0].data_type();
use crate::datatypes::*;
// if any of the arrays has nulls, insertions from any array requires setting bits
// as there is at least one array with nulls.
let use_nulls = use_nulls | arrays.iter().any(|array| array.null_count() > 0);
let mut array_capacity;
let [buffer1, buffer2] = match (data_type, &capacities) {
(
DataType::LargeUtf8 | DataType::LargeBinary,
Capacities::Binary(capacity, Some(value_cap)),
) => {
array_capacity = *capacity;
preallocate_offset_and_binary_buffer::<i64>(*capacity, *value_cap)
}
(
DataType::Utf8 | DataType::Binary,
Capacities::Binary(capacity, Some(value_cap)),
) => {
array_capacity = *capacity;
preallocate_offset_and_binary_buffer::<i32>(*capacity, *value_cap)
}
(_, Capacities::Array(capacity)) => {
array_capacity = *capacity;
new_buffers(data_type, *capacity)
}
(
DataType::List(_) | DataType::LargeList(_),
Capacities::List(capacity, _),
) => {
array_capacity = *capacity;
new_buffers(data_type, *capacity)
}
_ => panic!("Capacities: {:?} not yet supported", capacities),
};
let child_data = match &data_type {
DataType::Decimal128(_, _)
| DataType::Decimal256(_, _)
| DataType::Null
| DataType::Boolean
| DataType::UInt8
| DataType::UInt16
| DataType::UInt32
| DataType::UInt64
| DataType::Int8
| DataType::Int16
| DataType::Int32
| DataType::Int64
| DataType::Float16
| DataType::Float32
| DataType::Float64
| DataType::Date32
| DataType::Date64
| DataType::Time32(_)
| DataType::Time64(_)
| DataType::Duration(_)
| DataType::Timestamp(_, _)
| DataType::Utf8
| DataType::Binary
| DataType::LargeUtf8
| DataType::LargeBinary
| DataType::Interval(_)
| DataType::FixedSizeBinary(_) => vec![],
DataType::Map(_, _) | DataType::List(_) | DataType::LargeList(_) => {
let childs = arrays
.iter()
.map(|array| &array.child_data()[0])
.collect::<Vec<_>>();
let capacities = if let Capacities::List(capacity, ref child_capacities) =
capacities
{
child_capacities
.clone()
.map(|c| *c)
.unwrap_or(Capacities::Array(capacity))
} else {
Capacities::Array(array_capacity)
};
vec![MutableArrayData::with_capacities(
childs, use_nulls, capacities,
)]
}
// the dictionary type just appends keys and clones the values.
DataType::Dictionary(_, _) => vec![],
DataType::Struct(fields) => match capacities {
Capacities::Struct(capacity, Some(ref child_capacities)) => {
array_capacity = capacity;
(0..fields.len())
.zip(child_capacities)
.map(|(i, child_cap)| {
let child_arrays = arrays
.iter()
.map(|array| &array.child_data()[i])
.collect::<Vec<_>>();
MutableArrayData::with_capacities(
child_arrays,
use_nulls,
child_cap.clone(),
)
})
.collect::<Vec<_>>()
}
Capacities::Struct(capacity, None) => {
array_capacity = capacity;
(0..fields.len())
.map(|i| {
let child_arrays = arrays
.iter()
.map(|array| &array.child_data()[i])
.collect::<Vec<_>>();
MutableArrayData::new(child_arrays, use_nulls, capacity)
})
.collect::<Vec<_>>()
}
_ => (0..fields.len())
.map(|i| {
let child_arrays = arrays
.iter()
.map(|array| &array.child_data()[i])
.collect::<Vec<_>>();
MutableArrayData::new(child_arrays, use_nulls, array_capacity)
})
.collect::<Vec<_>>(),
},
DataType::FixedSizeList(_, _) => {
let childs = arrays
.iter()
.map(|array| &array.child_data()[0])
.collect::<Vec<_>>();
vec![MutableArrayData::new(childs, use_nulls, array_capacity)]
}
DataType::Union(fields, _, _) => (0..fields.len())
.map(|i| {
let child_arrays = arrays
.iter()
.map(|array| &array.child_data()[i])
.collect::<Vec<_>>();
MutableArrayData::new(child_arrays, use_nulls, array_capacity)
})
.collect::<Vec<_>>(),
};
// Get the dictionary if any, and if it is a concatenation of multiple
let (dictionary, dict_concat) = match &data_type {
DataType::Dictionary(_, _) => {
// If more than one dictionary, concatenate dictionaries together
let dict_concat = !arrays
.windows(2)
.all(|a| a[0].child_data()[0].ptr_eq(&a[1].child_data()[0]));
match dict_concat {
false => (Some(arrays[0].child_data()[0].clone()), false),
true => {
if let Capacities::Dictionary(_, _) = capacities {
panic!("dictionary capacity not yet supported")
}
let dictionaries: Vec<_> =
arrays.iter().map(|array| &array.child_data()[0]).collect();
let lengths: Vec<_> = dictionaries
.iter()
.map(|dictionary| dictionary.len())
.collect();
let capacity = lengths.iter().sum();
let mut mutable =
MutableArrayData::new(dictionaries, false, capacity);
for (i, len) in lengths.iter().enumerate() {
mutable.extend(i, 0, *len)
}
(Some(mutable.freeze()), true)
}
}
}
_ => (None, false),
};
let extend_nulls = build_extend_nulls(data_type);
let extend_null_bits = arrays
.iter()
.map(|array| build_extend_null_bits(array, use_nulls))
.collect();
let null_buffer = if use_nulls {
let null_bytes = bit_util::ceil(array_capacity, 8);
MutableBuffer::from_len_zeroed(null_bytes)
} else {
// create 0 capacity mutable buffer with the intention that it won't be used
MutableBuffer::with_capacity(0)
};
let extend_values = match &data_type {
DataType::Dictionary(_, _) => {
let mut next_offset = 0;
let extend_values: Result<Vec<_>> = arrays
.iter()
.map(|array| {
let offset = next_offset;
let dict_len = array.child_data()[0].len();
if dict_concat {
next_offset += dict_len;
}
build_extend_dictionary(array, offset, offset + dict_len)
.ok_or(ArrowError::DictionaryKeyOverflowError)
})
.collect();
extend_values.expect("MutableArrayData::new is infallible")
}
_ => arrays.iter().map(|array| build_extend(array)).collect(),
};
let data = _MutableArrayData {
data_type: data_type.clone(),
len: 0,
null_count: 0,
null_buffer,
buffer1,
buffer2,
child_data,
};
Self {
arrays,
data,
dictionary,
extend_values,
extend_null_bits,
extend_nulls,
}
}
/// Extends this array with a chunk of its source arrays
///
/// # Arguments
/// * `index` - the index of array that you what to copy values from
/// * `start` - the start index of the chunk (inclusive)
/// * `end` - the end index of the chunk (exclusive)
///
/// # Panic
/// This function panics if there is an invalid index,
/// i.e. `index` >= the number of source arrays
/// or `end` > the length of the `index`th array
pub fn extend(&mut self, index: usize, start: usize, end: usize) {
let len = end - start;
(self.extend_null_bits[index])(&mut self.data, start, len);
(self.extend_values[index])(&mut self.data, index, start, len);
self.data.len += len;
}
/// Extends this [MutableArrayData] with null elements, disregarding the bound arrays
pub fn extend_nulls(&mut self, len: usize) {
// TODO: null_buffer should probably be extended here as well
// otherwise is_valid() could later panic
// add test to confirm
self.data.null_count += len;
(self.extend_nulls)(&mut self.data, len);
self.data.len += len;
}
/// Returns the current length
#[inline]
pub fn len(&self) -> usize {
self.data.len
}
/// Returns true if len is 0
#[inline]
pub fn is_empty(&self) -> bool {
self.data.len == 0
}
/// Returns the current null count
#[inline]
pub fn null_count(&self) -> usize {
self.data.null_count
}
/// Creates a [ArrayData] from the pushed regions up to this point, consuming `self`.
pub fn freeze(self) -> ArrayData {
unsafe { self.data.freeze(self.dictionary).build_unchecked() }
}
/// Creates a [ArrayDataBuilder] from the pushed regions up to this point, consuming `self`.
/// This is useful for extending the default behavior of MutableArrayData.
pub fn into_builder(self) -> ArrayDataBuilder {
self.data.freeze(self.dictionary)
}
}
#[cfg(test)]
mod tests {
use std::{convert::TryFrom, sync::Arc};
use super::*;
use crate::array::Decimal128Array;
use crate::{
array::{
Array, ArrayData, ArrayRef, BooleanArray, DictionaryArray,
FixedSizeBinaryArray, Int16Array, Int16Type, Int32Array, Int64Array,
Int64Builder, ListBuilder, MapBuilder, NullArray, PrimitiveBuilder,
StringArray, StringDictionaryBuilder, StructArray, UInt8Array,
},
buffer::Buffer,
datatypes::Field,
};
use crate::{
array::{ListArray, StringBuilder},
error::Result,
};
fn create_decimal_array(
array: Vec<Option<i128>>,
precision: u8,
scale: u8,
) -> Decimal128Array {
array
.into_iter()
.collect::<Decimal128Array>()
.with_precision_and_scale(precision, scale)
.unwrap()
}
#[test]
#[cfg(not(feature = "force_validate"))]
fn test_decimal() {
let decimal_array =
create_decimal_array(vec![Some(1), Some(2), None, Some(3)], 10, 3);
let arrays = vec![Array::data(&decimal_array)];
let mut a = MutableArrayData::new(arrays, true, 3);
a.extend(0, 0, 3);
a.extend(0, 2, 3);
let result = a.freeze();
let array = Decimal128Array::from(result);
let expected = create_decimal_array(vec![Some(1), Some(2), None, None], 10, 3);
assert_eq!(array, expected);
}
#[test]
#[cfg(not(feature = "force_validate"))]
fn test_decimal_offset() {
let decimal_array =
create_decimal_array(vec![Some(1), Some(2), None, Some(3)], 10, 3);
let decimal_array = decimal_array.slice(1, 3); // 2, null, 3
let arrays = vec![decimal_array.data()];
let mut a = MutableArrayData::new(arrays, true, 2);
a.extend(0, 0, 2); // 2, null
let result = a.freeze();
let array = Decimal128Array::from(result);
let expected = create_decimal_array(vec![Some(2), None], 10, 3);
assert_eq!(array, expected);
}
#[test]
#[cfg(not(feature = "force_validate"))]
fn test_decimal_null_offset_nulls() {
let decimal_array =
create_decimal_array(vec![Some(1), Some(2), None, Some(3)], 10, 3);
let decimal_array = decimal_array.slice(1, 3); // 2, null, 3
let arrays = vec![decimal_array.data()];
let mut a = MutableArrayData::new(arrays, true, 2);
a.extend(0, 0, 2); // 2, null
a.extend_nulls(3); // 2, null, null, null, null
a.extend(0, 1, 3); //2, null, null, null, null, null, 3
let result = a.freeze();
let array = Decimal128Array::from(result);
let expected = create_decimal_array(
vec![Some(2), None, None, None, None, None, Some(3)],
10,
3,
);
assert_eq!(array, expected);
}
/// tests extending from a primitive array w/ offset nor nulls
#[test]
fn test_primitive() {
let b = UInt8Array::from(vec![Some(1), Some(2), Some(3)]);
let arrays = vec![b.data()];
let mut a = MutableArrayData::new(arrays, false, 3);
a.extend(0, 0, 2);
let result = a.freeze();
let array = UInt8Array::from(result);
let expected = UInt8Array::from(vec![Some(1), Some(2)]);
assert_eq!(array, expected);
}
/// tests extending from a primitive array with offset w/ nulls
#[test]
fn test_primitive_offset() {
let b = UInt8Array::from(vec![Some(1), Some(2), Some(3)]);
let b = b.slice(1, 2);
let arrays = vec![b.data()];
let mut a = MutableArrayData::new(arrays, false, 2);
a.extend(0, 0, 2);
let result = a.freeze();
let array = UInt8Array::from(result);
let expected = UInt8Array::from(vec![Some(2), Some(3)]);
assert_eq!(array, expected);
}
/// tests extending from a primitive array with offset and nulls
#[test]
fn test_primitive_null_offset() {
let b = UInt8Array::from(vec![Some(1), None, Some(3)]);
let b = b.slice(1, 2);
let arrays = vec![b.data()];
let mut a = MutableArrayData::new(arrays, false, 2);
a.extend(0, 0, 2);
let result = a.freeze();
let array = UInt8Array::from(result);
let expected = UInt8Array::from(vec![None, Some(3)]);
assert_eq!(array, expected);
}
#[test]
fn test_primitive_null_offset_nulls() {
let b = UInt8Array::from(vec![Some(1), Some(2), Some(3)]);
let b = b.slice(1, 2);
let arrays = vec![b.data()];
let mut a = MutableArrayData::new(arrays, true, 2);
a.extend(0, 0, 2);
a.extend_nulls(3);
a.extend(0, 1, 2);
let result = a.freeze();
let array = UInt8Array::from(result);
let expected =
UInt8Array::from(vec![Some(2), Some(3), None, None, None, Some(3)]);
assert_eq!(array, expected);
}
#[test]
fn test_list_null_offset() {
let int_builder = Int64Builder::new(24);
let mut builder = ListBuilder::<Int64Builder>::new(int_builder);
builder.values().append_slice(&[1, 2, 3]);
builder.append(true);
builder.values().append_slice(&[4, 5]);
builder.append(true);
builder.values().append_slice(&[6, 7, 8]);
builder.append(true);
let array = builder.finish();
let arrays = vec![array.data()];
let mut mutable = MutableArrayData::new(arrays, false, 0);
mutable.extend(0, 0, 1);
let result = mutable.freeze();
let array = ListArray::from(result);
let int_builder = Int64Builder::new(24);
let mut builder = ListBuilder::<Int64Builder>::new(int_builder);
builder.values().append_slice(&[1, 2, 3]);
builder.append(true);
let expected = builder.finish();
assert_eq!(array, expected);
}
/// tests extending from a variable-sized (strings and binary) array w/ offset with nulls
#[test]
fn test_variable_sized_nulls() {
let array = StringArray::from(vec![Some("a"), Some("bc"), None, Some("defh")]);
let arrays = vec![array.data()];
let mut mutable = MutableArrayData::new(arrays, false, 0);
mutable.extend(0, 1, 3);
let result = mutable.freeze();
let result = StringArray::from(result);
let expected = StringArray::from(vec![Some("bc"), None]);
assert_eq!(result, expected);
}
/// tests extending from a variable-sized (strings and binary) array
/// with an offset and nulls
#[test]
fn test_variable_sized_offsets() {
let array = StringArray::from(vec![Some("a"), Some("bc"), None, Some("defh")]);
let array = array.slice(1, 3);
let arrays = vec![array.data()];
let mut mutable = MutableArrayData::new(arrays, false, 0);
mutable.extend(0, 0, 3);
let result = mutable.freeze();
let result = StringArray::from(result);
let expected = StringArray::from(vec![Some("bc"), None, Some("defh")]);
assert_eq!(result, expected);
}
#[test]
fn test_string_offsets() {
let array = StringArray::from(vec![Some("a"), Some("bc"), None, Some("defh")]);
let array = array.slice(1, 3);
let arrays = vec![array.data()];
let mut mutable = MutableArrayData::new(arrays, false, 0);
mutable.extend(0, 0, 3);
let result = mutable.freeze();
let result = StringArray::from(result);
let expected = StringArray::from(vec![Some("bc"), None, Some("defh")]);
assert_eq!(result, expected);
}
#[test]
fn test_multiple_with_nulls() {
let array1 = StringArray::from(vec!["hello", "world"]);
let array2 = StringArray::from(vec![Some("1"), None]);
let arrays = vec![array1.data(), array2.data()];
let mut mutable = MutableArrayData::new(arrays, false, 5);
mutable.extend(0, 0, 2);
mutable.extend(1, 0, 2);
let result = mutable.freeze();
let result = StringArray::from(result);
let expected =
StringArray::from(vec![Some("hello"), Some("world"), Some("1"), None]);
assert_eq!(result, expected);
}
#[test]
fn test_string_null_offset_nulls() {
let array = StringArray::from(vec![Some("a"), Some("bc"), None, Some("defh")]);
let array = array.slice(1, 3);
let arrays = vec![array.data()];
let mut mutable = MutableArrayData::new(arrays, true, 0);
mutable.extend(0, 1, 3);
mutable.extend_nulls(1);
let result = mutable.freeze();
let result = StringArray::from(result);
let expected = StringArray::from(vec![None, Some("defh"), None]);
assert_eq!(result, expected);
}
#[test]
fn test_bool() {
let array = BooleanArray::from(vec![Some(false), Some(true), None, Some(false)]);
let arrays = vec![array.data()];
let mut mutable = MutableArrayData::new(arrays, false, 0);
mutable.extend(0, 1, 3);
let result = mutable.freeze();
let result = BooleanArray::from(result);
let expected = BooleanArray::from(vec![Some(true), None]);
assert_eq!(result, expected);
}
#[test]
fn test_null() {
let array1 = NullArray::new(10);
let array2 = NullArray::new(5);
let arrays = vec![array1.data(), array2.data()];
let mut mutable = MutableArrayData::new(arrays, false, 0);
mutable.extend(0, 1, 3);
mutable.extend(1, 0, 1);
let result = mutable.freeze();
let result = NullArray::from(result);
let expected = NullArray::new(3);
assert_eq!(result, expected);
}
fn create_dictionary_array(values: &[&str], keys: &[Option<&str>]) -> ArrayData {
let values = StringArray::from(values.to_vec());
let mut builder = StringDictionaryBuilder::new_with_dictionary(
PrimitiveBuilder::<Int16Type>::new(3),
&values,
)
.unwrap();
for key in keys {
if let Some(v) = key {
builder.append(v).unwrap();
} else {
builder.append_null()
}
}
builder.finish().into_data()
}
#[test]
fn test_dictionary() {
// (a, b, c), (0, 1, 0, 2) => (a, b, a, c)
let array = create_dictionary_array(
&["a", "b", "c"],
&[Some("a"), Some("b"), None, Some("c")],
);
let arrays = vec![&array];
let mut mutable = MutableArrayData::new(arrays, false, 0);
mutable.extend(0, 1, 3);
let result = mutable.freeze();
let result = DictionaryArray::from(result);
let expected = Int16Array::from(vec![Some(1), None]);
assert_eq!(result.keys(), &expected);
}