content: /*
   * 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.arrow.driver.jdbc.accessor.impl.complex;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.sql.Array;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.util.Map;
  import org.apache.arrow.driver.jdbc.utils.AccessorTestUtils;
  import org.apache.arrow.driver.jdbc.utils.RootAllocatorTestExtension;
  import org.apache.arrow.vector.complex.MapVector;
  import org.apache.arrow.vector.complex.StructVector;
  import org.apache.arrow.vector.complex.impl.UnionMapWriter;
  import org.apache.arrow.vector.util.JsonStringHashMap;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.RegisterExtension;
  
  public class ArrowFlightJdbcMapVectorAccessorTest {
    @RegisterExtension
    public static RootAllocatorTestExtension rootAllocatorTestExtension =
        new RootAllocatorTestExtension();
  
    private MapVector vector;
  
    @BeforeEach
    public void setup() {
      vector = MapVector.empty("", rootAllocatorTestExtension.getRootAllocator(), false);
      UnionMapWriter writer = vector.getWriter();
      writer.allocate();
      writer.setPosition(0); // optional
      writer.startMap();
      writer.startEntry();
      writer.key().integer().writeInt(1);
      writer.value().integer().writeInt(11);
      writer.endEntry();
      writer.startEntry();
      writer.key().integer().writeInt(2);
      writer.value().integer().writeInt(22);
      writer.endEntry();
      writer.startEntry();
      writer.key().integer().writeInt(3);
      writer.value().integer().writeInt(33);
      writer.endEntry();
      writer.endMap();
  
      writer.setPosition(1);
      writer.startMap();
      writer.startEntry();
      writer.key().integer().writeInt(2);
      writer.endEntry();
      writer.endMap();
  
      writer.setPosition(2);
      writer.startMap();
      writer.startEntry();
      writer.key().integer().writeInt(0);
      writer.value().integer().writeInt(2000);
      writer.endEntry();
      writer.startEntry();
      writer.key().integer().writeInt(1);
      writer.value().integer().writeInt(2001);
      writer.endEntry();
      writer.startEntry();
      writer.key().integer().writeInt(2);
      writer.value().integer().writeInt(2002);
      writer.endEntry();
      writer.startEntry();
      writer.key().integer().writeInt(3);
      writer.value().integer().writeInt(2003);
      writer.endEntry();
      writer.endMap();
  
      writer.setValueCount(3);
    }
  
    @AfterEach
    public void tearDown() {
      vector.close();
    }
  
    @Test
    public void testShouldGetObjectReturnValidMap() {
      AccessorTestUtils.Cursor cursor = new AccessorTestUtils.Cursor(vector.getValueCount());
      ArrowFlightJdbcMapVectorAccessor accessor =
          new ArrowFlightJdbcMapVectorAccessor(
              vector, cursor::getCurrentRow, (boolean wasNull) -> {});
  
      Map<Object, Object> expected = new JsonStringHashMap<>();
      expected.put(1, 11);
      expected.put(2, 22);
      expected.put(3, 33);
      assertEquals(expected, accessor.getObject());
      assertFalse(accessor.wasNull());
  
      cursor.next();
      expected = new JsonStringHashMap<>();
      expected.put(2, null);
      assertEquals(expected, accessor.getObject());
      assertFalse(accessor.wasNull());
  
      cursor.next();
      expected = new JsonStringHashMap<>();
      expected.put(0, 2000);
      expected.put(1, 2001);
      expected.put(2, 2002);
      expected.put(3, 2003);
      assertEquals(expected, accessor.getObject());
      assertFalse(accessor.wasNull());
    }
  
    @Test
    public void testShouldGetObjectReturnNull() {
      vector.setNull(0);
      ArrowFlightJdbcMapVectorAccessor accessor =
          new ArrowFlightJdbcMapVectorAccessor(vector, () -> 0, (boolean wasNull) -> {});
  
      assertNull(accessor.getObject());
      assertTrue(accessor.wasNull());
    }
  
    @Test
    public void testShouldGetArrayReturnValidArray() throws SQLException {
      AccessorTestUtils.Cursor cursor = new AccessorTestUtils.Cursor(vector.getValueCount());
      ArrowFlightJdbcMapVectorAccessor accessor =
          new ArrowFlightJdbcMapVectorAccessor(
              vector, cursor::getCurrentRow, (boolean wasNull) -> {});
  
      Array array = accessor.getArray();
      assertNotNull(array);
      assertFalse(accessor.wasNull());
  
      try (ResultSet resultSet = array.getResultSet()) {
        assertTrue(resultSet.next());
        Map<?, ?> entry = resultSet.getObject(1, Map.class);
        assertEquals(1, entry.get("key"));
        assertEquals(11, entry.get("value"));
        assertTrue(resultSet.next());
        entry = resultSet.getObject(1, Map.class);
        assertEquals(2, entry.get("key"));
        assertEquals(22, entry.get("value"));
        assertTrue(resultSet.next());
        entry = resultSet.getObject(1, Map.class);
        assertEquals(3, entry.get("key"));
        assertEquals(33, entry.get("value"));
        assertFalse(resultSet.next());
      }
  
      cursor.next();
      array = accessor.getArray();
      assertNotNull(array);
      assertFalse(accessor.wasNull());
      try (ResultSet resultSet = array.getResultSet()) {
        assertTrue(resultSet.next());
        Map<?, ?> entry = resultSet.getObject(1, Map.class);
        assertEquals(2, entry.get("key"));
        assertNull(entry.get("value"));
        assertFalse(resultSet.next());
      }
  
      cursor.next();
      array = accessor.getArray();
      assertNotNull(array);
      assertFalse(accessor.wasNull());
      try (ResultSet resultSet = array.getResultSet()) {
        assertTrue(resultSet.next());
        Map<?, ?> entry = resultSet.getObject(1, Map.class);
        assertEquals(0, entry.get("key"));
        assertEquals(2000, entry.get("value"));
        assertTrue(resultSet.next());
        entry = resultSet.getObject(1, Map.class);
        assertEquals(1, entry.get("key"));
        assertEquals(2001, entry.get("value"));
        assertTrue(resultSet.next());
        entry = resultSet.getObject(1, Map.class);
        assertEquals(2, entry.get("key"));
        assertEquals(2002, entry.get("value"));
        assertTrue(resultSet.next());
        entry = resultSet.getObject(1, Map.class);
        assertEquals(3, entry.get("key"));
        assertEquals(2003, entry.get("value"));
        assertFalse(resultSet.next());
      }
    }
  
    @Test
    public void testShouldGetArrayReturnNull() {
      vector.setNull(0);
      ((StructVector) vector.getDataVector()).setNull(0);
  
      ArrowFlightJdbcMapVectorAccessor accessor =
          new ArrowFlightJdbcMapVectorAccessor(vector, () -> 0, (boolean wasNull) -> {});
  
      assertNull(accessor.getArray());
      assertTrue(accessor.wasNull());
    }
  }
  