1 files changed, 61 insertions, 0 deletions
diff --git a/src/arrow/ruby/red-arrow-dataset/lib/arrow-dataset/arrow-table-loadable.rb b/src/arrow/ruby/red-arrow-dataset/lib/arrow-dataset/arrow-table-loadable.rb
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+++ b/src/arrow/ruby/red-arrow-dataset/lib/arrow-dataset/arrow-table-loadable.rb
@@ -0,0 +1,61 @@
+# 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.
+
+module ArrowDataset
+  module ArrowTableLoadable
+    private
+    def path_to_uri(path)
+      absolute_path = ::File.expand_path(path)
+      if absolute_path.start_with?("/")
+        URI("file://#{absolute_path}")
+      else
+        URI("file:///#{absolute_path}")
+      end
+    end
+
+    def load_from_directory
+      internal_load_from_uri(path_to_uri(@input))
+    end
+
+    def load_from_uri
+      internal_load_from_uri(@input)
+    end
+
+    def internal_load_from_uri(uri)
+      format = FileFormat.resolve(@options[:format])
+      dataset = FileSystemDataset.build(format) do |factory|
+        factory.file_system_uri = uri
+      end
+      scanner_builder = dataset.begin_scan
+      @options.each do |key, value|
+        next if key == :format
+        next if value.nil?
+        setter = "#{key}="
+        next unless scanner_builder.respond_to?(setter)
+        scanner_builder.public_send(setter, value)
+      end
+      scanner = scanner_builder.finish
+      scanner.to_table
+    end
+  end
+end
+
+module Arrow
+  class TableLoader
+    include ArrowDataset::ArrowTableLoadable
+  end
+end