arrow/json/object_writer.h

0001 // Licensed to the Apache Software Foundation (ASF) under one
0002 // or more contributor license agreements.  See the NOTICE file
0003 // distributed with this work for additional information
0004 // regarding copyright ownership.  The ASF licenses this file
0005 // to you under the Apache License, Version 2.0 (the
0006 // "License"); you may not use this file except in compliance
0007 // with the License.  You may obtain a copy of the License at
0008 //
0009 //   http://www.apache.org/licenses/LICENSE-2.0
0010 //
0011 // Unless required by applicable law or agreed to in writing,
0012 // software distributed under the License is distributed on an
0013 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
0014 // KIND, either express or implied.  See the License for the
0015 // specific language governing permissions and limitations
0016 // under the License.
0017
0018 #pragma once
0019
0020 #include <memory>
0021 #include <string>
0022 #include <string_view>
0023
0024 #include "arrow/util/visibility.h"
0025
0026 namespace arrow {
0027 namespace json {
0028 namespace internal {
0029
0030 /// This class is a helper to serialize a json object to a string.
0031 /// It uses rapidjson in implementation.
0032 class ARROW_EXPORT ObjectWriter {
0033  public:
0034   ObjectWriter();
0035   ~ObjectWriter();
0036
0037   void SetString(std::string_view key, std::string_view value);
0038   void SetBool(std::string_view key, bool value);
0039
0040   std::string Serialize();
0041
0042  private:
0043   class Impl;
0044   std::unique_ptr<Impl> impl_;
0045 };
0046
0047 }  // namespace internal
0048 }  // namespace json
0049 }  // namespace arrow