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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 TestProjector < Test::Unit::TestCase
def test_evaluate
table = Arrow::Table.new(:field1 => Arrow::Int32Array.new([1, 13, 3, 17]),
:field2 => Arrow::Int32Array.new([11, 2, 15, 17]),
:field3 => Arrow::Int32Array.new([1, 10, 2, 2]))
schema = table.schema
expression1 = schema.build_expression do |record|
record.field1 + record.field2
end
expression2 = schema.build_expression do |record, context|
context.if(record.field1 > record.field2)
.then(record.field1 + record.field2 * record.field3)
.elsif(record.field1 == record.field2)
.then(record.field1 - record.field2 / record.field3)
.else(record.field2)
end
projector = Gandiva::Projector.new(schema,
[expression1, expression2])
table.each_record_batch do |record_batch|
outputs = projector.evaluate(record_batch)
assert_equal([
[12, 15, 18, 34],
[11, 33, 15, 9]
],
outputs.collect(&:values))
end
end
end
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