本文整理了Java中com.facebook.presto.spi.block.Block.getObject()方法的一些代码示例，展示了Block.getObject()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Block.getObject()方法的具体详情如下：
包路径：com.facebook.presto.spi.block.Block
类名称：Block
方法名：getObject

Block.getObject介绍

[英]Gets an object in the value at position.
[中]获取位置处的值中的对象。

代码示例

代码示例来源：origin: prestodb/presto

@Override
public <T> T getObject(int position, Class<T> clazz)
{
  return block.getObject(position, clazz);
}

代码示例来源：origin: prestodb/presto

@Override
public Block getObject(Block block, int position)
{
  return block.getObject(position, Block.class);
}

代码示例来源：origin: prestodb/presto

@Override
public Block getObject(Block block, int position)
{
  return block.getObject(position, Block.class);
}

代码示例来源：origin: prestodb/presto

@Override
public Block getObject(Block block, int position)
{
  return block.getObject(position, Block.class);
}

代码示例来源：origin: prestodb/presto

@Override
public <T> T getObject(int position, Class<T> clazz)
{
  return dictionary.getObject(getId(position), clazz);
}

代码示例来源：origin: prestodb/presto

@Override
public <T> T getObject(int position, Class<T> clazz)
{
  checkReadablePosition(position);
  return value.getObject(0, clazz);
}

代码示例来源：origin: prestodb/presto

@Override
public <T> T getObject(int position, Class<T> clazz)
{
  assureLoaded();
  return block.getObject(position, clazz);
}

代码示例来源：origin: prestodb/presto

@Override
public <T> T getObject(int position, Class<T> clazz)
{
  position = getAbsolutePosition(position);
  if (position % 2 == 0) {
    return getRawKeyBlock().getObject(position / 2, clazz);
  }
  else {
    return getRawValueBlock().getObject(position / 2, clazz);
  }
}

代码示例来源：origin: prestodb/presto

@Override
  public void setField(Block block, int position)
  {
    Block rowBlock = block.getObject(position, Block.class);
    // TODO reuse row object and use FieldSetters, like we do at the top level
    // Ideally, we'd use the same recursive structure starting from the top, but
    // this requires modeling row types in the same way we model table rows
    // (multiple blocks vs all fields packed in a single block)
    List<Object> value = new ArrayList<>(fieldTypes.size());
    for (int i = 0; i < fieldTypes.size(); i++) {
      Object element = getField(fieldTypes.get(i), rowBlock, i);
      value.add(element);
    }
    rowInspector.setStructFieldData(row, field, value);
  }
}

代码示例来源：origin: prestodb/presto

@Override
public <T> T getObject(int position, Class<T> clazz)
{
  checkFieldIndex(position);
  return getRawFieldBlock(position).getObject(rowIndex, clazz);
}

代码示例来源：origin: prestodb/presto

@Override
public <T> T getObject(int position, Class<T> clazz)
{
  checkReadablePosition(position);
  return getBlock().getObject(position + start, clazz);
}

代码示例来源：origin: prestodb/presto

@Override
public long hash(Block block, int position)
{
  Block arrayBlock = block.getObject(position, Block.class);
  long result = 1;
  for (int i = 0; i < arrayBlock.getPositionCount(); i++) {
    Type elementType = fields.get(i).getType();
    result = 31 * result + TypeUtils.hashPosition(elementType, arrayBlock, i);
  }
  return result;
}

代码示例来源：origin: prestodb/presto

@Override
public Object getObjectValue(ConnectorSession session, Block block, int position)
{
  if (block.isNull(position)) {
    return null;
  }
  Block singleMapBlock = block.getObject(position, Block.class);
  if (!(singleMapBlock instanceof SingleMapBlock)) {
    throw new UnsupportedOperationException("Map is encoded with legacy block representation");
  }
  Map<Object, Object> map = new HashMap<>();
  for (int i = 0; i < singleMapBlock.getPositionCount(); i += 2) {
    map.put(keyType.getObjectValue(session, singleMapBlock, i), valueType.getObjectValue(session, singleMapBlock, i + 1));
  }
  return Collections.unmodifiableMap(map);
}

代码示例来源：origin: prestodb/presto

@Override
  public void setField(Block block, int position)
  {
    Block arrayBlock = block.getObject(position, Block.class);
    List<Object> list = new ArrayList<>(arrayBlock.getPositionCount());
    for (int i = 0; i < arrayBlock.getPositionCount(); i++) {
      Object element = getField(elementType, arrayBlock, i);
      list.add(element);
    }
    rowInspector.setStructFieldData(row, field, list);
  }
}

代码示例来源：origin: prestodb/presto

@Override
  public void setField(Block block, int position)
  {
    Block mapBlock = block.getObject(position, Block.class);
    Map<Object, Object> map = new HashMap<>(mapBlock.getPositionCount() * 2);
    for (int i = 0; i < mapBlock.getPositionCount(); i += 2) {
      Object key = getField(keyType, mapBlock, i);
      Object value = getField(valueType, mapBlock, i + 1);
      map.put(key, value);
    }
    rowInspector.setStructFieldData(row, field, map);
  }
}

代码示例来源：origin: prestodb/presto

@Override
public boolean equalTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition)
{
  Block leftRow = leftBlock.getObject(leftPosition, Block.class);
  Block rightRow = rightBlock.getObject(rightPosition, Block.class);
  for (int i = 0; i < leftRow.getPositionCount(); i++) {
    checkElementNotNull(leftRow.isNull(i));
    checkElementNotNull(rightRow.isNull(i));
    Type fieldType = fields.get(i).getType();
    if (!fieldType.equalTo(leftRow, i, rightRow, i)) {
      return false;
    }
  }
  return true;
}

代码示例来源：origin: prestodb/presto

private static boolean equals(Block block1, Block block2)
{
  boolean retval = block1.getPositionCount() == block2.getPositionCount();
  for (int i = 0; i < block1.getPositionCount() && retval; ++i) {
    if (block1 instanceof ArrayBlock && block2 instanceof ArrayBlock) {
      retval = equals(block1.getObject(i, Block.class), block2.getObject(i, Block.class));
    }
    else {
      retval = block1.compareTo(i, 0, block1.getSliceLength(i), block2, i, 0, block2.getSliceLength(i)) == 0;
    }
  }
  return retval;
}

代码示例来源：origin: prestodb/presto

@Override
public boolean equalTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition)
{
  Block leftArray = leftBlock.getObject(leftPosition, Block.class);
  Block rightArray = rightBlock.getObject(rightPosition, Block.class);
  if (leftArray.getPositionCount() != rightArray.getPositionCount()) {
    return false;
  }
  for (int i = 0; i < leftArray.getPositionCount(); i++) {
    checkElementNotNull(leftArray.isNull(i), ARRAY_NULL_ELEMENT_MSG);
    checkElementNotNull(rightArray.isNull(i), ARRAY_NULL_ELEMENT_MSG);
    if (!elementType.equalTo(leftArray, i, rightArray, i)) {
      return false;
    }
  }
  return true;
}

代码示例来源：origin: prestodb/presto

@Override
public Object getObjectValue(ConnectorSession session, Block block, int position)
{
  if (block.isNull(position)) {
    return null;
  }
  if (block instanceof AbstractArrayBlock) {
    return ((AbstractArrayBlock) block).apply((valuesBlock, start, length) -> arrayBlockToObjectValues(session, valuesBlock, start, length), position);
  }
  else {
    Block arrayBlock = block.getObject(position, Block.class);
    return arrayBlockToObjectValues(session, arrayBlock, 0, arrayBlock.getPositionCount());
  }
}

代码示例来源：origin: prestodb/presto

private static Block copyBlockViaWriteStructure(Block block, Supplier<BlockBuilder> newBlockBuilder)
{
  BlockBuilder blockBuilder = newBlockBuilder.get();
  for (int i = 0; i < block.getPositionCount(); i++) {
    if (block.isNull(i)) {
      blockBuilder.appendNull();
    }
    else {
      blockBuilder.appendStructure(block.getObject(i, Block.class));
    }
  }
  return blockBuilder.build();
}