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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 "contrib/libs/apache/arrow_next/cpp/src/arrow/table_builder.h"
#include <memory>
#include <utility>
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/array/array_base.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/array/builder_base.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/record_batch.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/status.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/type.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/util/logging.h"
namespace arrow20 {
// ----------------------------------------------------------------------
// RecordBatchBuilder
RecordBatchBuilder::RecordBatchBuilder(const std::shared_ptr<Schema>& schema,
MemoryPool* pool, int64_t initial_capacity)
: schema_(schema), initial_capacity_(initial_capacity), pool_(pool) {}
Result<std::unique_ptr<RecordBatchBuilder>> RecordBatchBuilder::Make(
const std::shared_ptr<Schema>& schema, MemoryPool* pool) {
return Make(schema, pool, kMinBuilderCapacity);
}
Result<std::unique_ptr<RecordBatchBuilder>> RecordBatchBuilder::Make(
const std::shared_ptr<Schema>& schema, MemoryPool* pool, int64_t initial_capacity) {
auto builder = std::unique_ptr<RecordBatchBuilder>(
new RecordBatchBuilder(schema, pool, initial_capacity));
RETURN_NOT_OK(builder->CreateBuilders());
RETURN_NOT_OK(builder->InitBuilders());
return builder;
}
Result<std::shared_ptr<RecordBatch>> RecordBatchBuilder::Flush(bool reset_builders) {
std::vector<std::shared_ptr<Array>> fields;
fields.resize(this->num_fields());
int64_t length = 0;
for (int i = 0; i < this->num_fields(); ++i) {
RETURN_NOT_OK(raw_field_builders_[i]->Finish(&fields[i]));
if (i > 0 && fields[i]->length() != length) {
return Status::Invalid("All fields must be same length when calling Flush");
}
length = fields[i]->length();
}
// For certain types like dictionaries, types may not be fully
// determined before we have flushed. Make sure that the RecordBatch
// gets the correct types in schema.
// See: #ARROW-9969
std::vector<std::shared_ptr<Field>> schema_fields(schema_->fields());
for (int i = 0; i < this->num_fields(); ++i) {
if (!schema_fields[i]->type()->Equals(fields[i]->type())) {
schema_fields[i] = schema_fields[i]->WithType(fields[i]->type());
}
}
std::shared_ptr<Schema> schema =
std::make_shared<Schema>(std::move(schema_fields), schema_->metadata());
std::shared_ptr<RecordBatch> batch =
RecordBatch::Make(std::move(schema), length, std::move(fields));
if (reset_builders) {
ARROW_RETURN_NOT_OK(InitBuilders());
}
return batch;
}
Result<std::shared_ptr<RecordBatch>> RecordBatchBuilder::Flush() { return Flush(true); }
void RecordBatchBuilder::SetInitialCapacity(int64_t capacity) {
ARROW_CHECK_GT(capacity, 0) << "Initial capacity must be positive";
initial_capacity_ = capacity;
}
Status RecordBatchBuilder::CreateBuilders() {
field_builders_.resize(this->num_fields());
raw_field_builders_.resize(this->num_fields());
for (int i = 0; i < this->num_fields(); ++i) {
RETURN_NOT_OK(MakeBuilder(pool_, schema_->field(i)->type(), &field_builders_[i]));
raw_field_builders_[i] = field_builders_[i].get();
}
return Status::OK();
}
Status RecordBatchBuilder::InitBuilders() {
for (int i = 0; i < this->num_fields(); ++i) {
RETURN_NOT_OK(raw_field_builders_[i]->Reserve(initial_capacity_));
}
return Status::OK();
}
} // namespace arrow20
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