tajo-core-tests/src/test/java/org/apache/tajo/engine/query/TestCreateIndex.java

/*
 * 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.tajo.engine.query;

import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.tajo.IntegrationTest;
import org.apache.tajo.QueryTestCaseBase;
import org.apache.tajo.TajoConstants;
import org.apache.tajo.conf.TajoConf.ConfVars;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import java.io.IOException;

import static org.junit.Assert.*;

@Category(IntegrationTest.class)
public class TestCreateIndex extends QueryTestCaseBase {

  public TestCreateIndex() {
    super(TajoConstants.DEFAULT_DATABASE_NAME);
  }

  private static void assertIndexNotExist(String databaseName, String indexName) throws IOException {
    Path indexPath = new Path(conf.getVar(ConfVars.WAREHOUSE_DIR), databaseName + "/" + indexName);
    FileSystem fs = indexPath.getFileSystem(conf);
    if (fs.exists(indexPath)) {
      fs.deleteOnExit(indexPath);
      assertFalse("Index is not deleted from the file system.", true);
    }
  }

  @Test
  public final void testCreateIndex() throws Exception {
    executeQuery();
    assertTrue(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_idx"));
    assertTrue(catalog.existIndexByColumnNames(getCurrentDatabase(), "lineitem", new String[]{"l_orderkey"}));
    executeString("drop index l_orderkey_idx");
    assertFalse(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_idx"));
    assertIndexNotExist(getCurrentDatabase(), "l_orderkey_idx");
  }

  @Test
  public final void testCreateIndexOnMultiAttrs() throws Exception {
    executeQuery();
    assertTrue(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_partkey_idx"));
    assertTrue(catalog.existIndexByColumnNames(getCurrentDatabase(), "lineitem", new String[]{"l_orderkey", "l_partkey"}));
    executeString("drop index l_orderkey_partkey_idx");
    assertFalse(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_partkey_idx"));
    assertIndexNotExist(getCurrentDatabase(), "l_orderkey_partkey_idx");
  }

  @Test
  public final void testCreateIndexWithCondition() throws Exception {
    executeQuery();
    assertTrue(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_partkey_lt10_idx"));
    assertTrue(catalog.existIndexByColumnNames(getCurrentDatabase(), "lineitem", new String[]{"l_orderkey", "l_partkey"}));
    executeString("drop index l_orderkey_partkey_lt10_idx");
    assertFalse(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_partkey_lt10_idx"));
    assertIndexNotExist(getCurrentDatabase(), "l_orderkey_partkey_lt10_idx");
  }

  @Test
  public final void testCreateIndexOnExpression() throws Exception {
    executeQuery();
    assertTrue(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_100_lt10_idx"));
    executeString("drop index l_orderkey_100_lt10_idx");
    assertFalse(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_100_lt10_idx"));
    assertIndexNotExist(getCurrentDatabase(), "l_orderkey_100_lt10_idx");
  }

  @Test
  public final void testCreateIndexOnMultiExprs() throws Exception {
    executeQuery();
    assertTrue(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_100_l_linenumber_10_lt10_idx"));
    executeString("drop index l_orderkey_100_l_linenumber_10_lt10_idx");
    assertFalse(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_100_l_linenumber_10_lt10_idx"));
    assertIndexNotExist(getCurrentDatabase(), "l_orderkey_100_l_linenumber_10_lt10_idx");
  }

  @Test
  public final void testCreateIndexOnLocation() throws Exception {
    executeQuery();
    assertTrue(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_idx"));
    assertTrue(catalog.existIndexByColumnNames(getCurrentDatabase(), "lineitem", new String[]{"l_orderkey"}));
    catalog.dropIndex(getCurrentDatabase(), "l_orderkey_idx");
    assertFalse(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_idx"));
    executeString("create index l_orderkey_idx on lineitem (l_orderkey asc nulls first) location '/tajo/warehouse/default/l_orderkey_idx';");
    assertTrue(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_idx"));
    assertTrue(catalog.existIndexByColumnNames(getCurrentDatabase(), "lineitem", new String[]{"l_orderkey"}));
    executeString("drop index l_orderkey_idx");
    assertFalse(catalog.existIndexByName(getCurrentDatabase(), "l_orderkey_idx"));
    assertIndexNotExist(getCurrentDatabase(), "l_orderkey_idx");
  }
}