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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.
#include "arrow/array/builder_nested.h"
#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <utility>
#include <vector>
#include "arrow/buffer.h"
#include "arrow/status.h"
#include "arrow/type.h"
#include "arrow/type_traits.h"
#include "arrow/util/bit-util.h"
#include "arrow/util/int-util.h"
#include "arrow/util/logging.h"
namespace arrow {
// ----------------------------------------------------------------------
// MapBuilder
MapBuilder::MapBuilder(MemoryPool* pool, const std::shared_ptr<ArrayBuilder>& key_builder,
std::shared_ptr<ArrayBuilder> const& item_builder,
const std::shared_ptr<DataType>& type)
: ArrayBuilder(type, pool), key_builder_(key_builder), item_builder_(item_builder) {
list_builder_ = std::make_shared<ListBuilder>(
pool, key_builder, list(field("key", key_builder->type(), false)));
}
MapBuilder::MapBuilder(MemoryPool* pool, const std::shared_ptr<ArrayBuilder>& key_builder,
const std::shared_ptr<ArrayBuilder>& item_builder,
bool keys_sorted)
: MapBuilder(pool, key_builder, item_builder,
map(key_builder->type(), item_builder->type(), keys_sorted)) {}
Status MapBuilder::Resize(int64_t capacity) {
RETURN_NOT_OK(list_builder_->Resize(capacity));
capacity_ = list_builder_->capacity();
return Status::OK();
}
void MapBuilder::Reset() {
list_builder_->Reset();
ArrayBuilder::Reset();
}
Status MapBuilder::FinishInternal(std::shared_ptr<ArrayData>* out) {
ARROW_CHECK_EQ(item_builder_->length(), key_builder_->length())
<< "keys and items builders don't have the same size in MapBuilder";
// finish list(keys) builder
RETURN_NOT_OK(list_builder_->FinishInternal(out));
// finish values builder
std::shared_ptr<ArrayData> items_data;
RETURN_NOT_OK(item_builder_->FinishInternal(&items_data));
auto keys_data = (*out)->child_data[0];
(*out)->type = type_;
(*out)->child_data[0] = ArrayData::Make(type_->child(0)->type(), keys_data->length,
{nullptr}, {keys_data, items_data}, 0, 0);
ArrayBuilder::Reset();
return Status::OK();
}
Status MapBuilder::AppendValues(const int32_t* offsets, int64_t length,
const uint8_t* valid_bytes) {
DCHECK_EQ(item_builder_->length(), key_builder_->length());
RETURN_NOT_OK(list_builder_->AppendValues(offsets, length, valid_bytes));
length_ = list_builder_->length();
null_count_ = list_builder_->null_count();
return Status::OK();
}
Status MapBuilder::Append() {
DCHECK_EQ(item_builder_->length(), key_builder_->length());
RETURN_NOT_OK(list_builder_->Append());
length_ = list_builder_->length();
return Status::OK();
}
Status MapBuilder::AppendNull() {
DCHECK_EQ(item_builder_->length(), key_builder_->length());
RETURN_NOT_OK(list_builder_->AppendNull());
length_ = list_builder_->length();
null_count_ = list_builder_->null_count();
return Status::OK();
}
Status MapBuilder::AppendNulls(int64_t length) {
DCHECK_EQ(item_builder_->length(), key_builder_->length());
RETURN_NOT_OK(list_builder_->AppendNulls(length));
length_ = list_builder_->length();
null_count_ = list_builder_->null_count();
return Status::OK();
}
// ----------------------------------------------------------------------
// FixedSizeListBuilder
FixedSizeListBuilder::FixedSizeListBuilder(
MemoryPool* pool, std::shared_ptr<ArrayBuilder> const& value_builder,
int32_t list_size)
: ArrayBuilder(fixed_size_list(value_builder->type(), list_size), pool),
list_size_(list_size),
value_builder_(value_builder) {}
FixedSizeListBuilder::FixedSizeListBuilder(
MemoryPool* pool, std::shared_ptr<ArrayBuilder> const& value_builder,
const std::shared_ptr<DataType>& type)
: ArrayBuilder(type, pool),
list_size_(
internal::checked_cast<const FixedSizeListType*>(type.get())->list_size()),
value_builder_(value_builder) {}
void FixedSizeListBuilder::Reset() {
ArrayBuilder::Reset();
value_builder_->Reset();
}
Status FixedSizeListBuilder::Append() {
RETURN_NOT_OK(Reserve(1));
UnsafeAppendToBitmap(true);
return Status::OK();
}
Status FixedSizeListBuilder::AppendValues(int64_t length, const uint8_t* valid_bytes) {
RETURN_NOT_OK(Reserve(length));
UnsafeAppendToBitmap(valid_bytes, length);
return Status::OK();
}
Status FixedSizeListBuilder::AppendNull() {
RETURN_NOT_OK(Reserve(1));
UnsafeAppendToBitmap(false);
return value_builder_->AppendNulls(list_size_);
}
Status FixedSizeListBuilder::AppendNulls(int64_t length) {
RETURN_NOT_OK(Reserve(length));
UnsafeAppendToBitmap(length, false);
return value_builder_->AppendNulls(list_size_ * length);
}
Status FixedSizeListBuilder::Resize(int64_t capacity) {
RETURN_NOT_OK(CheckCapacity(capacity, capacity_));
return ArrayBuilder::Resize(capacity);
}
Status FixedSizeListBuilder::FinishInternal(std::shared_ptr<ArrayData>* out) {
std::shared_ptr<ArrayData> items;
if (value_builder_->length() == 0) {
// Try to make sure we get a non-null values buffer (ARROW-2744)
RETURN_NOT_OK(value_builder_->Resize(0));
}
RETURN_NOT_OK(value_builder_->FinishInternal(&items));
// If the type has not been specified in the constructor, infer it
// This is the case if the value_builder contains a DenseUnionBuilder
const auto& list_type = internal::checked_cast<const FixedSizeListType&>(*type_);
if (!list_type.value_type()) {
type_ = std::make_shared<FixedSizeListType>(value_builder_->type(),
list_type.list_size());
}
std::shared_ptr<Buffer> null_bitmap;
RETURN_NOT_OK(null_bitmap_builder_.Finish(&null_bitmap));
*out = ArrayData::Make(type_, length_, {null_bitmap}, {std::move(items)}, null_count_);
Reset();
return Status::OK();
}
// ----------------------------------------------------------------------
// Struct
StructBuilder::StructBuilder(const std::shared_ptr<DataType>& type, MemoryPool* pool,
std::vector<std::shared_ptr<ArrayBuilder>> field_builders)
: ArrayBuilder(type, pool) {
children_ = std::move(field_builders);
}
void StructBuilder::Reset() {
ArrayBuilder::Reset();
for (const auto& field_builder : children_) {
field_builder->Reset();
}
}
Status StructBuilder::AppendNulls(int64_t length) {
ARROW_RETURN_NOT_OK(Reserve(length));
UnsafeAppendToBitmap(length, false);
return Status::OK();
}
Status StructBuilder::FinishInternal(std::shared_ptr<ArrayData>* out) {
std::shared_ptr<Buffer> null_bitmap;
RETURN_NOT_OK(null_bitmap_builder_.Finish(&null_bitmap));
std::vector<std::shared_ptr<ArrayData>> child_data(children_.size());
for (size_t i = 0; i < children_.size(); ++i) {
if (length_ == 0) {
// Try to make sure the child buffers are initialized
RETURN_NOT_OK(children_[i]->Resize(0));
}
RETURN_NOT_OK(children_[i]->FinishInternal(&child_data[i]));
}
// If the type has not been specified in the constructor, infer it
// This is the case if one of the children contains a DenseUnionBuilder
if (!type_) {
std::vector<std::shared_ptr<Field>> fields;
for (const auto& field_builder : children_) {
fields.push_back(field("", field_builder->type()));
}
type_ = struct_(fields);
}
*out = ArrayData::Make(type_, length_, {null_bitmap}, null_count_);
(*out)->child_data = std::move(child_data);
capacity_ = length_ = null_count_ = 0;
return Status::OK();
}
} // namespace arrow