Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
+}