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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.
#pragma once
#include <stdexcept>
#include <string>
#include "arrow/extension_type.h"
#include "arrow/result.h"
#include "arrow/type_fwd.h"
#include "arrow/util/visibility.h"
namespace arrow::extension {
/// \brief Concrete type class for variable-size JSON data, utf8-encoded.
class ARROW_EXPORT JsonExtensionType : public ExtensionType {
public:
explicit JsonExtensionType(const std::shared_ptr<DataType>& storage_type)
: ExtensionType(storage_type), storage_type_(storage_type) {}
std::string extension_name() const override { return "arrow.json"; }
bool ExtensionEquals(const ExtensionType& other) const override;
Result<std::shared_ptr<DataType>> Deserialize(
std::shared_ptr<DataType> storage_type,
const std::string& serialized_data) const override;
std::string Serialize() const override;
std::shared_ptr<Array> MakeArray(std::shared_ptr<ArrayData> data) const override;
static Result<std::shared_ptr<DataType>> Make(std::shared_ptr<DataType> storage_type);
static bool IsSupportedStorageType(Type::type type_id);
private:
std::shared_ptr<DataType> storage_type_;
};
/// \brief Return a JsonExtensionType instance.
ARROW_EXPORT std::shared_ptr<DataType> json(
std::shared_ptr<DataType> storage_type = utf8());
} // namespace arrow::extension
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