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-rw-r--r--src/arrow/c_glib/example/lua/read-stream.lua51
1 files changed, 51 insertions, 0 deletions
diff --git a/src/arrow/c_glib/example/lua/read-stream.lua b/src/arrow/c_glib/example/lua/read-stream.lua
new file mode 100644
index 000000000..7bf1083e2
--- /dev/null
+++ b/src/arrow/c_glib/example/lua/read-stream.lua
@@ -0,0 +1,51 @@
+-- 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.
+
+local lgi = require 'lgi'
+local Arrow = lgi.Arrow
+
+local input_path = arg[1] or "/tmp/stream.arrow";
+
+local input = Arrow.MemoryMappedInputStream.new(input_path)
+local reader = Arrow.RecordBatchStreamReader.new(input)
+
+local i = 0
+while true do
+ local record_batch = reader:read_next()
+ if not record_batch then
+ break
+ end
+
+ print(string.rep("=", 40))
+ print("record-batch["..i.."]:")
+ for j = 0, record_batch:get_n_columns() - 1 do
+ local column_name = record_batch:get_column_name(j)
+ local column_data = record_batch:get_column_data(j)
+ io.write(" "..column_name..": [")
+ for k = 0, record_batch:get_n_rows() - 1 do
+ if k > 0 then
+ io.write(", ")
+ end
+ io.write(column_data:get_value(k))
+ end
+ print("]")
+ end
+
+ i = i + 1
+end
+
+input:close()