/*
 * 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.phoenix.end2end;

import static org.apache.phoenix.util.TestUtil.B_VALUE;
import static org.apache.phoenix.util.TestUtil.ROW3;
import static org.apache.phoenix.util.TestUtil.TEST_PROPERTIES;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Collection;
import java.util.Properties;
import org.apache.phoenix.util.PropertiesUtil;
import org.apache.phoenix.util.TestUtil;
import org.junit.FixMethodOrder;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import org.junit.runners.MethodSorters;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

@Category(ParallelStatsDisabledTest.class)
@RunWith(Parameterized.class)
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class UngroupedIT extends BaseQueryIT {

  public UngroupedIT(String indexDDL, boolean columnEncoded, boolean keepDeletedCells) {
    super(indexDDL, columnEncoded, keepDeletedCells);
  }

  @Parameters(name = "UngroupedIT_{index}") // name is used by failsafe as file name in reports
  public static synchronized Collection<Object> data() {
    return BaseQueryIT.allIndexes();
  }

  @Test
  public void testUngroupedAggregation() throws Exception {
    String query =
      "SELECT count(1) FROM " + tableName + " WHERE organization_id=? and a_string = ?";
    String url = getUrl();
    Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES);
    Connection conn = DriverManager.getConnection(url, props);
    try {
      PreparedStatement statement = conn.prepareStatement(query);
      statement.setString(1, tenantId);
      statement.setString(2, B_VALUE);
      ResultSet rs = statement.executeQuery();
      assertTrue(rs.next());
      assertEquals(4, rs.getLong(1));
      assertFalse(rs.next());
    } finally {
      conn.close();
    }
    conn = DriverManager.getConnection(url, props);
    try {
      PreparedStatement statement = conn.prepareStatement(query);
      statement.setString(1, tenantId);
      statement.setString(2, B_VALUE);
      ResultSet rs = statement.executeQuery();
      assertTrue(rs.next());
      assertEquals(4, rs.getLong(1));
      assertFalse(rs.next());
    } finally {
      conn.close();
    }
  }

  @Test
  public void testUngroupedAggregationNoWhere() throws Exception {
    String query = "SELECT count(*) FROM " + tableName;
    String url = getUrl();
    Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES);
    Connection conn = DriverManager.getConnection(url, props);
    try {
      PreparedStatement statement = conn.prepareStatement(query);
      ResultSet rs = statement.executeQuery();
      assertTrue(rs.next());
      assertEquals(9, rs.getLong(1));
      assertFalse(rs.next());
    } finally {
      conn.close();
    }
  }

  @Test
  public void zTestSumOverNullIntegerColumn() throws Exception {
    String query = "SELECT sum(a_integer) FROM " + tableName + " a";
    Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES);
    Connection conn = DriverManager.getConnection(getUrl(), props);
    conn.setAutoCommit(true);
    conn.createStatement()
      .execute("UPSERT INTO " + tableName + " (organization_id,entity_id,a_integer) VALUES('"
        + getOrganizationId() + "','" + ROW3 + "',NULL)");
    Connection conn1 = DriverManager.getConnection(getUrl(), props);
    TestUtil.analyzeTable(conn1, tableName);
    conn1.close();
    conn = DriverManager.getConnection(getUrl(), props);
    try {
      PreparedStatement statement = conn.prepareStatement(query);
      ResultSet rs = statement.executeQuery();
      assertTrue(rs.next());
      assertEquals(42, rs.getInt(1));
      assertFalse(rs.next());
    } finally {
      conn.close();
    }
    conn = DriverManager.getConnection(getUrl(), props);
    conn.setAutoCommit(true);
    conn.createStatement().execute("UPSERT INTO " + tableName
      + " (organization_id,entity_id,a_integer) SELECT organization_id, entity_id, CAST(null AS integer) FROM "
      + tableName);

    conn = DriverManager.getConnection(getUrl(), props);
    try {
      PreparedStatement statement = conn.prepareStatement(query);
      ResultSet rs = statement.executeQuery();
      assertTrue(rs.next());
      assertEquals(0, rs.getInt(1));
      assertTrue(rs.wasNull());
      assertFalse(rs.next());
    } finally {
      conn.close();
    }
  }

}
