Java tutorial
/* * 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 io.prestosql.benchmark; import com.google.common.collect.ImmutableMap; import io.prestosql.Session; import io.prestosql.plugin.tpch.TpchConnectorFactory; import io.prestosql.testing.LocalQueryRunner; import java.util.Map; import static io.prestosql.Session.SessionBuilder; import static io.prestosql.plugin.tpch.TpchMetadata.TINY_SCHEMA_NAME; import static io.prestosql.testing.TestingSession.testSessionBuilder; public final class BenchmarkQueryRunner { private BenchmarkQueryRunner() { } public static LocalQueryRunner createLocalQueryRunnerHashEnabled() { return createLocalQueryRunner(ImmutableMap.of("optimizer.optimize_hash_generation", "true")); } public static LocalQueryRunner createLocalQueryRunner() { return createLocalQueryRunner(ImmutableMap.of()); } public static LocalQueryRunner createLocalQueryRunner(Map<String, String> extraSessionProperties) { SessionBuilder sessionBuilder = testSessionBuilder().setCatalog("tpch").setSchema(TINY_SCHEMA_NAME); extraSessionProperties.forEach(sessionBuilder::setSystemProperty); Session session = sessionBuilder.build(); LocalQueryRunner localQueryRunner = new LocalQueryRunner(session); // add tpch localQueryRunner.createCatalog("tpch", new TpchConnectorFactory(1), ImmutableMap.of()); return localQueryRunner; } }