コード例 #1
0
  @Test
  public void testReAllocNullableVariableWidthVector() {
    final MaterializedField field =
        MaterializedField.create(EMPTY_SCHEMA_PATH, NullableVarCharHolder.TYPE);

    // Create a new value vector for 1024 integers
    try (final NullableVarCharVector vector =
        (NullableVarCharVector) TypeHelper.getNewVector(field, allocator)) {
      final NullableVarCharVector.Mutator m = vector.getMutator();
      vector.allocateNew();

      int initialCapacity = vector.getValueCapacity();

      // Put values in indexes that fall within the initial allocation
      m.setSafe(0, STR1, 0, STR1.length);
      m.setSafe(initialCapacity - 1, STR2, 0, STR2.length);

      // Now try to put values in space that falls beyond the initial allocation
      m.setSafe(initialCapacity + 200, STR3, 0, STR3.length);

      // Check valueCapacity is more than initial allocation
      assertEquals((initialCapacity + 1) * 2 - 1, vector.getValueCapacity());

      final NullableVarCharVector.Accessor accessor = vector.getAccessor();
      assertArrayEquals(STR1, accessor.get(0));
      assertArrayEquals(STR2, accessor.get(initialCapacity - 1));
      assertArrayEquals(STR3, accessor.get(initialCapacity + 200));

      // Set the valueCount to be more than valueCapacity of current allocation. This is possible
      // for NullableValueVectors
      // as we don't call setSafe for null values, but we do call setValueCount when the current
      // batch is processed.
      m.setValueCount(vector.getValueCapacity() + 200);
    }
  }
コード例 #2
0
  @Test
  public void testNullableVarCharVectorLoad() {
    final MaterializedField field =
        MaterializedField.create(EMPTY_SCHEMA_PATH, NullableVarCharHolder.TYPE);

    // Create a new value vector for 1024 nullable variable length strings.
    final NullableVarCharVector vector1 = new NullableVarCharVector(field, allocator);
    final NullableVarCharVector.Mutator mutator = vector1.getMutator();
    vector1.allocateNew(1024 * 10, 1024);

    // Populate the vector.
    final StringBuilder stringBuilder = new StringBuilder();
    final int valueCount = 10;
    for (int i = 0; i < valueCount; ++i) {
      stringBuilder.append('x');
      mutator.set(i, stringBuilder.toString().getBytes(utf8Charset));
    }

    // Check the contents.
    final NullableVarCharVector.Accessor accessor1 = vector1.getAccessor();
    stringBuilder.setLength(0);
    for (int i = 0; i < valueCount; ++i) {
      stringBuilder.append('x');
      final Object object = accessor1.getObject(i);
      assertEquals(stringBuilder.toString(), object.toString());
    }

    mutator.setValueCount(valueCount);
    assertEquals(valueCount, vector1.getAccessor().getValueCount());

    // Still ok after setting value count?
    stringBuilder.setLength(0);
    for (int i = 0; i < valueCount; ++i) {
      stringBuilder.append('x');
      final Object object = accessor1.getObject(i);
      assertEquals(stringBuilder.toString(), object.toString());
    }

    // Combine into a single buffer so we can load it into a new vector.
    final DrillBuf[] buffers1 = vector1.getBuffers(false);
    final DrillBuf buffer1 = combineBuffers(allocator, buffers1);
    final NullableVarCharVector vector2 = new NullableVarCharVector(field, allocator);
    vector2.load(vector1.getMetadata(), buffer1);

    // Check the vector's contents.
    final NullableVarCharVector.Accessor accessor2 = vector2.getAccessor();
    stringBuilder.setLength(0);
    for (int i = 0; i < valueCount; ++i) {
      stringBuilder.append('x');
      final Object object = accessor2.getObject(i);
      assertEquals(stringBuilder.toString(), object.toString());
    }

    vector1.close();
    vector2.close();
    buffer1.release();
  }