integration-test/src/test/java/org/apache/iotdb/db/it/udaf/IoTDBUDAFNormalQueryIT.java - iotdb - Git at Google

 /*
  * 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.iotdb.db.it.udaf;

 import org.apache.iotdb.it.env.EnvFactory;
 import org.apache.iotdb.it.framework.IoTDBTestRunner;
 import org.apache.iotdb.itbase.category.ClusterIT;
 import org.apache.iotdb.itbase.category.LocalStandaloneIT;

 import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 import org.junit.runner.RunWith;

 import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.Locale;

 import static org.apache.iotdb.itbase.constant.TestConstant.*;
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.fail;

 @RunWith(IoTDBTestRunner.class)
 @Category({LocalStandaloneIT.class, ClusterIT.class})
 public class IoTDBUDAFNormalQueryIT {
   private static final double DELTA = 1E-6;
   protected static final String TIMESTAMP_STR = "Time";

   private static final String[] creationSqls =
       new String[] {
         "CREATE DATABASE root.vehicle.d0",
         "CREATE DATABASE root.vehicle.d1",
         "CREATE TIMESERIES root.vehicle.d0.s0 WITH DATATYPE=INT32, ENCODING=RLE",
         "CREATE TIMESERIES root.vehicle.d0.s1 WITH DATATYPE=INT64, ENCODING=RLE",
         "CREATE TIMESERIES root.vehicle.d0.s2 WITH DATATYPE=FLOAT, ENCODING=RLE",
         "CREATE TIMESERIES root.vehicle.d0.s3 WITH DATATYPE=TEXT, ENCODING=PLAIN",
         "CREATE TIMESERIES root.vehicle.d0.s4 WITH DATATYPE=BOOLEAN, ENCODING=PLAIN",
         "CREATE TIMESERIES root.test.noDataRegion.s1 WITH DATATYPE=INT32"
       };
   private static final String[] dataSet2 =
       new String[] {
         "CREATE DATABASE root.ln.wf01.wt01",
         "CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, ENCODING=PLAIN",
         "CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, ENCODING=PLAIN",
         "CREATE TIMESERIES root.ln.wf01.wt01.hardware WITH DATATYPE=INT32, ENCODING=PLAIN",
         "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
             + "values(1, 1.1, false, 11)",
         "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
             + "values(2, 2.2, true, 22)",
         "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
             + "values(3, 3.3, false, 33 )",
         "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
             + "values(4, 4.4, false, 44)",
         "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
             + "values(5, 5.5, false, 55)"
       };
   private static final String[] dataSet3 =
       new String[] {
         "CREATE DATABASE root.sg",
         "CREATE TIMESERIES root.sg.d1.s1 WITH DATATYPE=INT32, ENCODING=RLE",
         "insert into root.sg.d1(timestamp,s1) values(5,5)",
         "insert into root.sg.d1(timestamp,s1) values(12,12)",
         "flush",
         "insert into root.sg.d1(timestamp,s1) values(15,15)",
         "insert into root.sg.d1(timestamp,s1) values(25,25)",
         "flush",
         "insert into root.sg.d1(timestamp,s1) values(1,111)",
         "insert into root.sg.d1(timestamp,s1) values(20,200)",
         "flush",
       };
   private final String d0s0 = "root.vehicle.d0.s0";
   private final String d0s1 = "root.vehicle.d0.s1";
   private final String d0s2 = "root.vehicle.d0.s2";
   private final String d0s3 = "root.vehicle.d0.s3";
   private static final String insertTemplate =
       "INSERT INTO root.vehicle.d0(timestamp,s0,s1,s2,s3,s4)" + " VALUES(%d,%d,%d,%f,%s,%s)";

   @BeforeClass
   public static void setUp() throws Exception {
     EnvFactory.getEnv().getConfig().getCommonConfig().setUdfMemoryBudgetInMB(5);
     EnvFactory.getEnv().initClusterEnvironment();
     prepareData();
     registerUDAF();
   }

   private static void prepareData() {
     try (Connection connection = EnvFactory.getEnv().getConnection();
         Statement statement = connection.createStatement()) {

       for (String sql : creationSqls) {
         statement.execute(sql);
       }

       // prepare BufferWrite file
       for (int i = 5000; i < 7000; i++) {
         statement.addBatch(
             String.format(
                 Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
       }
       statement.executeBatch();
       statement.clearBatch();
       statement.execute("flush");

       for (int i = 7500; i < 8500; i++) {
         statement.addBatch(
             String.format(
                 Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
       }
       statement.executeBatch();
       statement.clearBatch();
       statement.execute("flush");
       // prepare Unseq-File
       for (int i = 500; i < 1500; i++) {
         statement.addBatch(
             String.format(
                 Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
       }
       statement.executeBatch();
       statement.clearBatch();
       statement.execute("flush");
       for (int i = 3000; i < 6500; i++) {
         statement.addBatch(
             String.format(
                 Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
       }
       statement.executeBatch();
       statement.clearBatch();

       // prepare BufferWrite cache
       for (int i = 9000; i < 10000; i++) {
         statement.addBatch(
             String.format(
                 Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
       }
       statement.executeBatch();
       statement.clearBatch();
       // prepare Overflow cache
       for (int i = 2000; i < 2500; i++) {
         statement.addBatch(
             String.format(
                 Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
       }
       statement.executeBatch();
       statement.clearBatch();

       for (String sql : dataSet3) {
         statement.execute(sql);
       }

       for (String sql : dataSet2) {
         statement.execute(sql);
       }
     } catch (Exception e) {
       e.printStackTrace();
       fail(e.getMessage());
     }
   }

   @AfterClass
   public static void tearDown() throws Exception {
     EnvFactory.getEnv().cleanClusterEnvironment();
   }

   private static void registerUDAF() {
     try (Connection connection = EnvFactory.getEnv().getConnection();
         Statement statement = connection.createStatement()) {
       statement.execute(
           "CREATE FUNCTION avg_udaf AS 'org.apache.iotdb.db.query.udf.example.UDAFAvg'");
       statement.execute(
           "CREATE FUNCTION count_udaf AS 'org.apache.iotdb.db.query.udf.example.UDAFCount'");
       statement.execute(
           "CREATE FUNCTION sum_udaf AS 'org.apache.iotdb.db.query.udf.example.UDAFSum'");
     } catch (SQLException throwable) {
       fail(throwable.getMessage());
     }
   }

   @Test
   public void singleUDAFTest() {
     String[] retArray = new String[] {"0,2001,2001,2001,2001", "0,7500,7500,7500,7500"};
     try (Connection connection = EnvFactory.getEnv().getConnection();
         Statement statement = connection.createStatement()) {

       int cnt;
       try (ResultSet resultSet =
           statement.executeQuery(
               "SELECT count_udaf(s0),count_udaf(s1),count_udaf(s2),count_udaf(s3) "
                   + "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
         cnt = 0;
         while (resultSet.next()) {
           String ans =
               resultSet.getString(TIMESTAMP_STR)
                   + ","
                   + resultSet.getString(countUDAF(d0s0))
                   + ","
                   + resultSet.getString(countUDAF(d0s1))
                   + ","
                   + resultSet.getString(countUDAF(d0s2))
                   + ","
                   + resultSet.getString(countUDAF(d0s3));
           Assert.assertEquals(retArray[cnt], ans);
           cnt++;
         }
         Assert.assertEquals(1, cnt);
       }

       try (ResultSet resultSet =
           statement.executeQuery(
               "SELECT count_udaf(s0),count_udaf(s1),count_udaf(s2),count_udaf(s3) "
                   + "FROM root.vehicle.d0")) {
         while (resultSet.next()) {
           String ans =
               resultSet.getString(TIMESTAMP_STR)
                   + ","
                   + resultSet.getString(countUDAF(d0s0))
                   + ","
                   + resultSet.getString(countUDAF(d0s1))
                   + ","
                   + resultSet.getString(countUDAF(d0s2))
                   + ","
                   + resultSet.getString(countUDAF(d0s3));
           Assert.assertEquals(retArray[cnt], ans);
           cnt++;
         }
         Assert.assertEquals(2, cnt);
       }

       // keep the correctness of `order by time desc`
       try (ResultSet resultSet =
           statement.executeQuery(
               "SELECT count_udaf(s0),count_udaf(s1),count_udaf(s2),count_udaf(s3) "
                   + "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000 order by time desc")) {
         cnt = 0;
         while (resultSet.next()) {
           String ans =
               resultSet.getString(TIMESTAMP_STR)
                   + ","
                   + resultSet.getString(countUDAF(d0s0))
                   + ","
                   + resultSet.getString(countUDAF(d0s1))
                   + ","
                   + resultSet.getString(countUDAF(d0s2))
                   + ","
                   + resultSet.getString(countUDAF(d0s3));
           Assert.assertEquals(retArray[cnt], ans);
           cnt++;
         }
         Assert.assertEquals(1, cnt);
       }

       try (ResultSet resultSet =
           statement.executeQuery(
               "SELECT count_udaf(s0),count_udaf(s1),count_udaf(s2),count_udaf(s3) "
                   + "FROM root.vehicle.d0 order by time desc")) {
         while (resultSet.next()) {
           String ans =
               resultSet.getString(TIMESTAMP_STR)
                   + ","
                   + resultSet.getString(countUDAF(d0s0))
                   + ","
                   + resultSet.getString(countUDAF(d0s1))
                   + ","
                   + resultSet.getString(countUDAF(d0s2))
                   + ","
                   + resultSet.getString(countUDAF(d0s3));
           Assert.assertEquals(retArray[cnt], ans);
           cnt++;
         }
         Assert.assertEquals(2, cnt);
       }
     } catch (Exception e) {
       e.printStackTrace();
       fail(e.getMessage());
     }
   }

   @Test
   public void multipleUDAFTest() {
     double[][] retArray = {
       {0.0, 1.4508E7, 7250.374812593702},
       {0.0, 626750.0, 1250.9980039920158}
     };

     try (Connection connection = EnvFactory.getEnv().getConnection();
         Statement statement = connection.createStatement()) {

       int cnt = 0;
       try (ResultSet resultSet =
           statement.executeQuery(
               "SELECT sum_udaf(s0),avg_udaf(s2)"
                   + "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
         while (resultSet.next()) {
           double[] ans = new double[3];
           ans[0] = Double.parseDouble(resultSet.getString(TIMESTAMP_STR));
           ans[1] = Double.parseDouble(resultSet.getString(sumUDAF(d0s0)));
           ans[2] = Double.parseDouble(resultSet.getString(avgUDAF(d0s2)));
           assertArrayEquals(retArray[cnt], ans, DELTA);
           cnt++;
         }
         Assert.assertEquals(1, cnt);
       }

       try (ResultSet resultSet =
           statement.executeQuery(
               "SELECT sum_udaf(s0),avg_udaf(s2)"
                   + "FROM root.vehicle.d0 WHERE time >= 1000 AND time <= 2000")) {
         while (resultSet.next()) {
           double[] ans = new double[3];
           ans[0] = Double.parseDouble(resultSet.getString(TIMESTAMP_STR));
           ans[1] = Double.parseDouble(resultSet.getString(sumUDAF(d0s0)));
           ans[2] = Double.parseDouble(resultSet.getString(avgUDAF(d0s2)));
           assertArrayEquals(retArray[cnt], ans, DELTA);
           cnt++;
         }
         Assert.assertEquals(2, cnt);
       }

       // keep the correctness of `order by time desc`
       cnt = 0;
       try (ResultSet resultSet =
           statement.executeQuery(
               "SELECT sum_udaf(s0),avg_udaf(s2)"
                   + "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000 order by time desc")) {
         while (resultSet.next()) {
           double[] ans = new double[3];
           ans[0] = Double.parseDouble(resultSet.getString(TIMESTAMP_STR));
           ans[1] = Double.parseDouble(resultSet.getString(sumUDAF(d0s0)));
           ans[2] = Double.parseDouble(resultSet.getString(avgUDAF(d0s2)));
           assertArrayEquals(retArray[cnt], ans, DELTA);
           cnt++;
         }
         Assert.assertEquals(1, cnt);
       }
     } catch (Exception e) {
       e.printStackTrace();
       fail(e.getMessage());
     }
   }

   @Test
   public void UDAFTypeMismatchErrorTest() {
     try (Connection connection = EnvFactory.getEnv().getConnection();
         Statement statement = connection.createStatement()) {
       try {
         try (ResultSet resultSet =
             statement.executeQuery(
                 "SELECT avg_udaf(s3) FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
           resultSet.next();
           fail();
         }
       } catch (Exception e) {
         Assert.assertTrue(
             e.getMessage(),
             e.getMessage()
                 .contains(
                     "the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: TEXT."));
       }
       try {
         try (ResultSet resultSet =
             statement.executeQuery(
                 "SELECT sum_udaf(s3)"
                     + "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
           resultSet.next();
           fail();
         }
       } catch (Exception e) {
         Assert.assertTrue(
             e.getMessage()
                 .contains(
                     "the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: TEXT."));
       }
       try {
         try (ResultSet resultSet =
             statement.executeQuery(
                 "SELECT avg_udaf(s4)"
                     + "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
           resultSet.next();
           fail();
         }
       } catch (Exception e) {
         Assert.assertTrue(
             e.getMessage()
                 .contains(
                     "the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: BOOLEAN."));
       }
       try {
         try (ResultSet resultSet =
             statement.executeQuery(
                 "SELECT sum_udaf(s4)"
                     + "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
           resultSet.next();
           fail();
         }
       } catch (Exception e) {
         Assert.assertTrue(
             e.getMessage(),
             e.getMessage()
                 .contains(
                     "the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: BOOLEAN."));
       }
       try {
         try (ResultSet resultSet =
             statement.executeQuery("SELECT avg_udaf(status) FROM root.ln.wf01.wt01")) {
           resultSet.next();
           fail();
         }
       } catch (Exception e) {
         Assert.assertTrue(
             e.getMessage(),
             e.getMessage()
                 .contains(
                     "the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: BOOLEAN."));
       }
     } catch (Exception e) {
       e.printStackTrace();
       fail(e.getMessage());
     }
   }
 }
	/*
	* 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.iotdb.db.it.udaf;

	import org.apache.iotdb.it.env.EnvFactory;
	import org.apache.iotdb.it.framework.IoTDBTestRunner;
	import org.apache.iotdb.itbase.category.ClusterIT;
	import org.apache.iotdb.itbase.category.LocalStandaloneIT;

	import org.junit.AfterClass;
	import org.junit.Assert;
	import org.junit.BeforeClass;
	import org.junit.Test;
	import org.junit.experimental.categories.Category;
	import org.junit.runner.RunWith;

	import java.sql.Connection;
	import java.sql.ResultSet;
	import java.sql.SQLException;
	import java.sql.Statement;
	import java.util.Locale;

	import static org.apache.iotdb.itbase.constant.TestConstant.*;
	import static org.junit.Assert.assertArrayEquals;
	import static org.junit.Assert.fail;

	@RunWith(IoTDBTestRunner.class)
	@Category({LocalStandaloneIT.class, ClusterIT.class})
	public class IoTDBUDAFNormalQueryIT {
	private static final double DELTA = 1E-6;
	protected static final String TIMESTAMP_STR = "Time";

	private static final String[] creationSqls =
	new String[] {
	"CREATE DATABASE root.vehicle.d0",
	"CREATE DATABASE root.vehicle.d1",
	"CREATE TIMESERIES root.vehicle.d0.s0 WITH DATATYPE=INT32, ENCODING=RLE",
	"CREATE TIMESERIES root.vehicle.d0.s1 WITH DATATYPE=INT64, ENCODING=RLE",
	"CREATE TIMESERIES root.vehicle.d0.s2 WITH DATATYPE=FLOAT, ENCODING=RLE",
	"CREATE TIMESERIES root.vehicle.d0.s3 WITH DATATYPE=TEXT, ENCODING=PLAIN",
	"CREATE TIMESERIES root.vehicle.d0.s4 WITH DATATYPE=BOOLEAN, ENCODING=PLAIN",
	"CREATE TIMESERIES root.test.noDataRegion.s1 WITH DATATYPE=INT32"
	};
	private static final String[] dataSet2 =
	new String[] {
	"CREATE DATABASE root.ln.wf01.wt01",
	"CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, ENCODING=PLAIN",
	"CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, ENCODING=PLAIN",
	"CREATE TIMESERIES root.ln.wf01.wt01.hardware WITH DATATYPE=INT32, ENCODING=PLAIN",
	"INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
	+ "values(1, 1.1, false, 11)",
	"INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
	+ "values(2, 2.2, true, 22)",
	"INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
	+ "values(3, 3.3, false, 33 )",
	"INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
	+ "values(4, 4.4, false, 44)",
	"INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
	+ "values(5, 5.5, false, 55)"
	};
	private static final String[] dataSet3 =
	new String[] {
	"CREATE DATABASE root.sg",
	"CREATE TIMESERIES root.sg.d1.s1 WITH DATATYPE=INT32, ENCODING=RLE",
	"insert into root.sg.d1(timestamp,s1) values(5,5)",
	"insert into root.sg.d1(timestamp,s1) values(12,12)",
	"flush",
	"insert into root.sg.d1(timestamp,s1) values(15,15)",
	"insert into root.sg.d1(timestamp,s1) values(25,25)",
	"flush",
	"insert into root.sg.d1(timestamp,s1) values(1,111)",
	"insert into root.sg.d1(timestamp,s1) values(20,200)",
	"flush",
	};
	private final String d0s0 = "root.vehicle.d0.s0";
	private final String d0s1 = "root.vehicle.d0.s1";
	private final String d0s2 = "root.vehicle.d0.s2";
	private final String d0s3 = "root.vehicle.d0.s3";
	private static final String insertTemplate =
	"INSERT INTO root.vehicle.d0(timestamp,s0,s1,s2,s3,s4)" + " VALUES(%d,%d,%d,%f,%s,%s)";

	@BeforeClass
	public static void setUp() throws Exception {
	EnvFactory.getEnv().getConfig().getCommonConfig().setUdfMemoryBudgetInMB(5);
	EnvFactory.getEnv().initClusterEnvironment();
	prepareData();
	registerUDAF();
	}

	private static void prepareData() {
	try (Connection connection = EnvFactory.getEnv().getConnection();
	Statement statement = connection.createStatement()) {

	for (String sql : creationSqls) {
	statement.execute(sql);
	}

	// prepare BufferWrite file
	for (int i = 5000; i < 7000; i++) {
	statement.addBatch(
	String.format(
	Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
	}
	statement.executeBatch();
	statement.clearBatch();
	statement.execute("flush");

	for (int i = 7500; i < 8500; i++) {
	statement.addBatch(
	String.format(
	Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
	}
	statement.executeBatch();
	statement.clearBatch();
	statement.execute("flush");
	// prepare Unseq-File
	for (int i = 500; i < 1500; i++) {
	statement.addBatch(
	String.format(
	Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
	}
	statement.executeBatch();
	statement.clearBatch();
	statement.execute("flush");
	for (int i = 3000; i < 6500; i++) {
	statement.addBatch(
	String.format(
	Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
	}
	statement.executeBatch();
	statement.clearBatch();

	// prepare BufferWrite cache
	for (int i = 9000; i < 10000; i++) {
	statement.addBatch(
	String.format(
	Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
	}
	statement.executeBatch();
	statement.clearBatch();
	// prepare Overflow cache
	for (int i = 2000; i < 2500; i++) {
	statement.addBatch(
	String.format(
	Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
	}
	statement.executeBatch();
	statement.clearBatch();

	for (String sql : dataSet3) {
	statement.execute(sql);
	}

	for (String sql : dataSet2) {
	statement.execute(sql);
	}
	} catch (Exception e) {
	e.printStackTrace();
	fail(e.getMessage());
	}
	}

	@AfterClass
	public static void tearDown() throws Exception {
	EnvFactory.getEnv().cleanClusterEnvironment();
	}

	private static void registerUDAF() {
	try (Connection connection = EnvFactory.getEnv().getConnection();
	Statement statement = connection.createStatement()) {
	statement.execute(
	"CREATE FUNCTION avg_udaf AS 'org.apache.iotdb.db.query.udf.example.UDAFAvg'");
	statement.execute(
	"CREATE FUNCTION count_udaf AS 'org.apache.iotdb.db.query.udf.example.UDAFCount'");
	statement.execute(
	"CREATE FUNCTION sum_udaf AS 'org.apache.iotdb.db.query.udf.example.UDAFSum'");
	} catch (SQLException throwable) {
	fail(throwable.getMessage());
	}
	}

	@Test
	public void singleUDAFTest() {
	String[] retArray = new String[] {"0,2001,2001,2001,2001", "0,7500,7500,7500,7500"};
	try (Connection connection = EnvFactory.getEnv().getConnection();
	Statement statement = connection.createStatement()) {

	int cnt;
	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT count_udaf(s0),count_udaf(s1),count_udaf(s2),count_udaf(s3) "
	+ "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
	cnt = 0;
	while (resultSet.next()) {
	String ans =
	resultSet.getString(TIMESTAMP_STR)
	+ ","
	+ resultSet.getString(countUDAF(d0s0))
	+ ","
	+ resultSet.getString(countUDAF(d0s1))
	+ ","
	+ resultSet.getString(countUDAF(d0s2))
	+ ","
	+ resultSet.getString(countUDAF(d0s3));
	Assert.assertEquals(retArray[cnt], ans);
	cnt++;
	}
	Assert.assertEquals(1, cnt);
	}

	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT count_udaf(s0),count_udaf(s1),count_udaf(s2),count_udaf(s3) "
	+ "FROM root.vehicle.d0")) {
	while (resultSet.next()) {
	String ans =
	resultSet.getString(TIMESTAMP_STR)
	+ ","
	+ resultSet.getString(countUDAF(d0s0))
	+ ","
	+ resultSet.getString(countUDAF(d0s1))
	+ ","
	+ resultSet.getString(countUDAF(d0s2))
	+ ","
	+ resultSet.getString(countUDAF(d0s3));
	Assert.assertEquals(retArray[cnt], ans);
	cnt++;
	}
	Assert.assertEquals(2, cnt);
	}

	// keep the correctness of `order by time desc`
	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT count_udaf(s0),count_udaf(s1),count_udaf(s2),count_udaf(s3) "
	+ "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000 order by time desc")) {
	cnt = 0;
	while (resultSet.next()) {
	String ans =
	resultSet.getString(TIMESTAMP_STR)
	+ ","
	+ resultSet.getString(countUDAF(d0s0))
	+ ","
	+ resultSet.getString(countUDAF(d0s1))
	+ ","
	+ resultSet.getString(countUDAF(d0s2))
	+ ","
	+ resultSet.getString(countUDAF(d0s3));
	Assert.assertEquals(retArray[cnt], ans);
	cnt++;
	}
	Assert.assertEquals(1, cnt);
	}

	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT count_udaf(s0),count_udaf(s1),count_udaf(s2),count_udaf(s3) "
	+ "FROM root.vehicle.d0 order by time desc")) {
	while (resultSet.next()) {
	String ans =
	resultSet.getString(TIMESTAMP_STR)
	+ ","
	+ resultSet.getString(countUDAF(d0s0))
	+ ","
	+ resultSet.getString(countUDAF(d0s1))
	+ ","
	+ resultSet.getString(countUDAF(d0s2))
	+ ","
	+ resultSet.getString(countUDAF(d0s3));
	Assert.assertEquals(retArray[cnt], ans);
	cnt++;
	}
	Assert.assertEquals(2, cnt);
	}
	} catch (Exception e) {
	e.printStackTrace();
	fail(e.getMessage());
	}
	}

	@Test
	public void multipleUDAFTest() {
	double[][] retArray = {
	{0.0, 1.4508E7, 7250.374812593702},
	{0.0, 626750.0, 1250.9980039920158}
	};

	try (Connection connection = EnvFactory.getEnv().getConnection();
	Statement statement = connection.createStatement()) {

	int cnt = 0;
	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT sum_udaf(s0),avg_udaf(s2)"
	+ "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
	while (resultSet.next()) {
	double[] ans = new double[3];
	ans[0] = Double.parseDouble(resultSet.getString(TIMESTAMP_STR));
	ans[1] = Double.parseDouble(resultSet.getString(sumUDAF(d0s0)));
	ans[2] = Double.parseDouble(resultSet.getString(avgUDAF(d0s2)));
	assertArrayEquals(retArray[cnt], ans, DELTA);
	cnt++;
	}
	Assert.assertEquals(1, cnt);
	}

	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT sum_udaf(s0),avg_udaf(s2)"
	+ "FROM root.vehicle.d0 WHERE time >= 1000 AND time <= 2000")) {
	while (resultSet.next()) {
	double[] ans = new double[3];
	ans[0] = Double.parseDouble(resultSet.getString(TIMESTAMP_STR));
	ans[1] = Double.parseDouble(resultSet.getString(sumUDAF(d0s0)));
	ans[2] = Double.parseDouble(resultSet.getString(avgUDAF(d0s2)));
	assertArrayEquals(retArray[cnt], ans, DELTA);
	cnt++;
	}
	Assert.assertEquals(2, cnt);
	}

	// keep the correctness of `order by time desc`
	cnt = 0;
	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT sum_udaf(s0),avg_udaf(s2)"
	+ "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000 order by time desc")) {
	while (resultSet.next()) {
	double[] ans = new double[3];
	ans[0] = Double.parseDouble(resultSet.getString(TIMESTAMP_STR));
	ans[1] = Double.parseDouble(resultSet.getString(sumUDAF(d0s0)));
	ans[2] = Double.parseDouble(resultSet.getString(avgUDAF(d0s2)));
	assertArrayEquals(retArray[cnt], ans, DELTA);
	cnt++;
	}
	Assert.assertEquals(1, cnt);
	}
	} catch (Exception e) {
	e.printStackTrace();
	fail(e.getMessage());
	}
	}

	@Test
	public void UDAFTypeMismatchErrorTest() {
	try (Connection connection = EnvFactory.getEnv().getConnection();
	Statement statement = connection.createStatement()) {
	try {
	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT avg_udaf(s3) FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
	resultSet.next();
	fail();
	}
	} catch (Exception e) {
	Assert.assertTrue(
	e.getMessage(),
	e.getMessage()
	.contains(
	"the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: TEXT."));
	}
	try {
	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT sum_udaf(s3)"
	+ "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
	resultSet.next();
	fail();
	}
	} catch (Exception e) {
	Assert.assertTrue(
	e.getMessage()
	.contains(
	"the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: TEXT."));
	}
	try {
	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT avg_udaf(s4)"
	+ "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
	resultSet.next();
	fail();
	}
	} catch (Exception e) {
	Assert.assertTrue(
	e.getMessage()
	.contains(
	"the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: BOOLEAN."));
	}
	try {
	try (ResultSet resultSet =
	statement.executeQuery(
	"SELECT sum_udaf(s4)"
	+ "FROM root.vehicle.d0 WHERE time >= 6000 AND time <= 9000")) {
	resultSet.next();
	fail();
	}
	} catch (Exception e) {
	Assert.assertTrue(
	e.getMessage(),
	e.getMessage()
	.contains(
	"the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: BOOLEAN."));
	}
	try {
	try (ResultSet resultSet =
	statement.executeQuery("SELECT avg_udaf(status) FROM root.ln.wf01.wt01")) {
	resultSet.next();
	fail();
	}
	} catch (Exception e) {
	Assert.assertTrue(
	e.getMessage(),
	e.getMessage()
	.contains(
	"the data type of the input series (index: 0) is not valid. expected: [INT32, INT64, FLOAT, DOUBLE]. actual: BOOLEAN."));
	}
	} catch (Exception e) {
	e.printStackTrace();
	fail(e.getMessage());
	}
	}
	}