/*
* Licensed 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.
*/
package com.facebook.presto.sql.planner.iterative.rule;
import com.facebook.presto.sql.planner.assertions.ExpressionMatcher;
import com.facebook.presto.sql.planner.assertions.PlanMatchPattern;
import com.facebook.presto.sql.planner.iterative.rule.test.RuleTester;
import com.facebook.presto.sql.planner.plan.Assignments;
import com.google.common.collect.ImmutableMap;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.sql.planner.assertions.PlanMatchPattern.project;
import static com.facebook.presto.sql.planner.assertions.PlanMatchPattern.values;
import static com.facebook.presto.sql.planner.iterative.rule.test.PlanBuilder.expression;
import static io.airlift.testing.Closeables.closeAllRuntimeException;
public class TestInlineProjections
{
private RuleTester tester;
@BeforeClass
public void setUp()
{
tester = new RuleTester();
}
@AfterClass(alwaysRun = true)
public void tearDown()
{
closeAllRuntimeException(tester);
tester = null;
}
@Test
public void test()
{
tester.assertThat(new InlineProjections())
.on(p ->
p.project(
Assignments.builder()
.put(p.symbol("identity", BIGINT), expression("symbol")) // identity
.put(p.symbol("multi_complex_1", BIGINT), expression("complex + 1")) // complex expression referenced multiple times
.put(p.symbol("multi_complex_2", BIGINT), expression("complex + 2")) // complex expression referenced multiple times
.put(p.symbol("multi_literal_1", BIGINT), expression("literal + 1")) // literal referenced multiple times
.put(p.symbol("multi_literal_2", BIGINT), expression("literal + 2")) // literal referenced multiple times
.put(p.symbol("single_complex", BIGINT), expression("complex_2 + 2")) // complex expression reference only once
.put(p.symbol("try", BIGINT), expression("try(complex / literal)"))
.build(),
p.project(Assignments.builder()
.put(p.symbol("symbol", BIGINT), expression("x"))
.put(p.symbol("complex", BIGINT), expression("x * 2"))
.put(p.symbol("literal", BIGINT), expression("1"))
.put(p.symbol("complex_2", BIGINT), expression("x - 1"))
.build(),
p.values(p.symbol("x", BIGINT)))))
.matches(
project(
ImmutableMap.<String, ExpressionMatcher>builder()
.put("out1", PlanMatchPattern.expression("x"))
.put("out2", PlanMatchPattern.expression("y + 1"))
.put("out3", PlanMatchPattern.expression("y + 2"))
.put("out4", PlanMatchPattern.expression("1 + 1"))
.put("out5", PlanMatchPattern.expression("1 + 2"))
.put("out6", PlanMatchPattern.expression("x - 1 + 2"))
.put("out7", PlanMatchPattern.expression("try(y / 1)"))
.build(),
project(
ImmutableMap.of(
"x", PlanMatchPattern.expression("x"),
"y", PlanMatchPattern.expression("x * 2")),
values(ImmutableMap.of("x", 0)))));
}
@Test
public void testIdentityProjections()
throws Exception
{
tester.assertThat(new InlineProjections())
.on(p ->
p.project(
Assignments.of(p.symbol("output", BIGINT), expression("value")),
p.project(
Assignments.identity(p.symbol("value", BIGINT)),
p.values(p.symbol("value", BIGINT)))))
.doesNotFire();
}
}