/**
 * 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.
 */
package org.apache.hive.benchmark.vectorization;

import org.apache.hadoop.hive.ql.exec.vector.expressions.FilterStringColLikeStringScalar;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;

import java.nio.charset.StandardCharsets;

/**
 * This test measures the performance for vectorization.
 * <p/>
 * This test uses JMH framework for benchmarking.
 * You may execute this benchmark tool using JMH command line in different ways:
 * <p/>
 * To use the settings shown in the main() function, use:
 * $ java -cp target/benchmarks.jar org.apache.hive.benchmark.vectorization.VectorizedLikeBench
 * <p/>
 * To use the default settings used by JMH, use:
 * $ java -jar target/benchmarks.jar org.apache.hive.benchmark.vectorization.VectorizedLikeBench
 * <p/>
 * To specify different parameters, use:
 * - This command will use 10 warm-up iterations, 5 test iterations, and 2 forks. And it will
 * display the Average Time (avgt) in Microseconds (us)
 * - Benchmark mode. Available modes are:
 * [Throughput/thrpt, AverageTime/avgt, SampleTime/sample, SingleShotTime/ss, All/all]
 * - Output time unit. Available time units are: [m, s, ms, us, ns].
 * <p/>
 * $ java -jar target/benchmarks.jar org.apache.hive.benchmark.vectorization.VectorizedLikeBench
 * -wi 10 -i 5 -f 2 -bm avgt -tu us
 */
@State(Scope.Benchmark)
public class VectorizedLikeBench {
  public static class FilterStringColLikeStringScalarBench extends AbstractExpression {
    @Override
    public void setup() {
      rowBatch = buildRowBatch(null, 1, getBytesColumnVector());
      expression = new FilterStringColLikeStringScalar(0, "%aabb%".getBytes(StandardCharsets.UTF_8));
    }
  }

  public static void main(String[] args) throws RunnerException {
    Options opt = new OptionsBuilder().include(".*" + VectorizedLikeBench.class.getSimpleName() +
        ".*").build();
    new Runner(opt).run();
  }
}