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Diffstat (limited to 'src/arrow/cpp/examples/minimal_build/example.cc')
-rw-r--r-- | src/arrow/cpp/examples/minimal_build/example.cc | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/arrow/cpp/examples/minimal_build/example.cc b/src/arrow/cpp/examples/minimal_build/example.cc new file mode 100644 index 000000000..9bfb9953e --- /dev/null +++ b/src/arrow/cpp/examples/minimal_build/example.cc @@ -0,0 +1,69 @@ +// 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/csv/api.h> +#include <arrow/io/api.h> +#include <arrow/ipc/api.h> +#include <arrow/pretty_print.h> +#include <arrow/result.h> +#include <arrow/status.h> +#include <arrow/table.h> + +#include <iostream> + +using arrow::Status; + +namespace { + +Status RunMain(int argc, char** argv) { + const char* csv_filename = "test.csv"; + const char* arrow_filename = "test.arrow"; + + std::cerr << "* Reading CSV file '" << csv_filename << "' into table" << std::endl; + ARROW_ASSIGN_OR_RAISE(auto input_file, arrow::io::ReadableFile::Open(csv_filename)); + ARROW_ASSIGN_OR_RAISE(auto csv_reader, arrow::csv::TableReader::Make( + arrow::io::default_io_context(), input_file, + arrow::csv::ReadOptions::Defaults(), + arrow::csv::ParseOptions::Defaults(), + arrow::csv::ConvertOptions::Defaults())); + ARROW_ASSIGN_OR_RAISE(auto table, csv_reader->Read()); + + std::cerr << "* Read table:" << std::endl; + ARROW_RETURN_NOT_OK(arrow::PrettyPrint(*table, {}, &std::cerr)); + + std::cerr << "* Writing table into Arrow IPC file '" << arrow_filename << "'" + << std::endl; + ARROW_ASSIGN_OR_RAISE(auto output_file, + arrow::io::FileOutputStream::Open(arrow_filename)); + ARROW_ASSIGN_OR_RAISE(auto batch_writer, + arrow::ipc::MakeFileWriter(output_file, table->schema())); + ARROW_RETURN_NOT_OK(batch_writer->WriteTable(*table)); + ARROW_RETURN_NOT_OK(batch_writer->Close()); + + return Status::OK(); +} + +} // namespace + +int main(int argc, char** argv) { + Status st = RunMain(argc, argv); + if (!st.ok()) { + std::cerr << st << std::endl; + return 1; + } + return 0; +} |