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# 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.
class TestProjectNode < Test::Unit::TestCase
include Helper::Buildable
def execute_plan(options)
plan = Arrow::ExecutePlan.new
numbers = build_int8_array([1, 2, 3, 4, 5])
strings = build_string_array(["a", "b", "a", "b", "a"])
table = build_table(number: numbers,
string: strings)
source_node_options = Arrow::SourceNodeOptions.new(table)
source_node = plan.build_source_node(source_node_options)
project_node = plan.build_project_node(source_node, options)
sink_node_options = Arrow::SinkNodeOptions.new
sink_node = plan.build_sink_node(project_node,
sink_node_options)
plan.validate
plan.start
plan.wait
reader = sink_node_options.get_reader(project_node.output_schema)
table = reader.read_all
plan.stop
table
end
def test_expressions
three_scalar = Arrow::Int8Scalar.new(3)
three_datum = Arrow::ScalarDatum.new(three_scalar)
expressions = [
Arrow::FieldExpression.new("number"),
Arrow::CallExpression.new("multiply",
[
Arrow::FieldExpression.new("number"),
Arrow::LiteralExpression.new(three_datum),
]),
]
options = Arrow::ProjectNodeOptions.new(expressions)
assert_equal(build_table("number" => [
build_int8_array([1, 2, 3, 4, 5]),
],
"multiply(number, 3)" => [
build_int8_array([3, 6, 9, 12, 15]),
]),
execute_plan(options))
end
def test_names
three_scalar = Arrow::Int8Scalar.new(3)
three_datum = Arrow::ScalarDatum.new(three_scalar)
expressions = [
Arrow::CallExpression.new("multiply",
[
Arrow::FieldExpression.new("number"),
Arrow::LiteralExpression.new(three_datum),
]),
Arrow::FieldExpression.new("number"),
]
options = Arrow::ProjectNodeOptions.new(expressions, ["number * 3"])
assert_equal(build_table("number * 3" => [
build_int8_array([3, 6, 9, 12, 15]),
],
"number" => [
build_int8_array([1, 2, 3, 4, 5]),
]),
execute_plan(options))
end
end
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