| // 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 crate::{array::ArrayData, datatypes::DataType}; |
| |
| use super::{Extend, _MutableArrayData}; |
| |
| pub(super) fn build_extend(array: &ArrayData) -> Extend { |
| let size = match array.data_type() { |
| DataType::FixedSizeBinary(i) => *i as usize, |
| _ => unreachable!(), |
| }; |
| |
| let values = &array.buffers()[0].as_slice()[array.offset() * size..]; |
| if array.null_count() == 0 { |
| // fast case where we can copy regions without null issues |
| Box::new( |
| move |mutable: &mut _MutableArrayData, _, start: usize, len: usize| { |
| let buffer = &mut mutable.buffer1; |
| buffer.extend_from_slice(&values[start * size..(start + len) * size]); |
| }, |
| ) |
| } else { |
| Box::new( |
| move |mutable: &mut _MutableArrayData, _, start: usize, len: usize| { |
| // nulls present: append item by item, ignoring null entries |
| let values_buffer = &mut mutable.buffer1; |
| |
| (start..start + len).for_each(|i| { |
| if array.is_valid(i) { |
| // append value |
| let bytes = &values[i * size..(i + 1) * size]; |
| values_buffer.extend_from_slice(bytes); |
| } else { |
| values_buffer.extend_zeros(size); |
| } |
| }) |
| }, |
| ) |
| } |
| } |
| |
| pub(super) fn extend_nulls(mutable: &mut _MutableArrayData, len: usize) { |
| let size = match mutable.data_type { |
| DataType::FixedSizeBinary(i) => i as usize, |
| _ => unreachable!(), |
| }; |
| |
| let values_buffer = &mut mutable.buffer1; |
| values_buffer.extend_zeros(len * size); |
| } |