Flow PHP

RowGroup

Properties

$_TSPEC : mixed
$columns : array<string|int, ColumnChunk>: Metadata for each column chunk in this row group.
$file_offset : int: Byte offset from beginning of file to first page (data or dictionary) in this row group *.
$isValidate : mixed
$num_rows : int: Number of rows in this row group *.
$ordinal : int: Row group ordinal in the file *.
$sorting_columns : array<string|int, SortingColumn>: If set, specifies a sort ordering of the rows in this RowGroup.
$total_byte_size : int: Total byte size of all the uncompressed column data in this row group *.
$total_compressed_size : int: Total byte size of all compressed (and potentially encrypted) column data in this row group *.

Methods

__construct() : mixed
getName() : mixed
read() : mixed
write() : mixed

$_TSPEC


    public
    static    mixed
    $_TSPEC
     = [1 => ['var' => 'columns', 'isRequired' => true, 'type' => \Thrift\Type\TType::LST, 'etype' => \Thrift\Type\TType::STRUCT, 'elem' => ['type' => \Thrift\Type\TType::STRUCT, 'class' => '\Flow\Parquet\Thrift\ColumnChunk']], 2 => ['var' => 'total_byte_size', 'isRequired' => true, 'type' => \Thrift\Type\TType::I64], 3 => ['var' => 'num_rows', 'isRequired' => true, 'type' => \Thrift\Type\TType::I64], 4 => ['var' => 'sorting_columns', 'isRequired' => false, 'type' => \Thrift\Type\TType::LST, 'etype' => \Thrift\Type\TType::STRUCT, 'elem' => ['type' => \Thrift\Type\TType::STRUCT, 'class' => '\Flow\Parquet\Thrift\SortingColumn']], 5 => ['var' => 'file_offset', 'isRequired' => false, 'type' => \Thrift\Type\TType::I64], 6 => ['var' => 'total_compressed_size', 'isRequired' => false, 'type' => \Thrift\Type\TType::I64], 7 => ['var' => 'ordinal', 'isRequired' => false, 'type' => \Thrift\Type\TType::I16]]

$columns

Metadata for each column chunk in this row group.


    public
        array<string|int, ColumnChunk>
    $columns

This list must have the same order as the SchemaElement list in FileMetaData.

$file_offset

Byte offset from beginning of file to first page (data or dictionary) in this row group *.


    public
        int
    $file_offset

$isValidate


    public
    static    mixed
    $isValidate
     = false

$num_rows

Number of rows in this row group *.


    public
        int
    $num_rows

$ordinal

Row group ordinal in the file *.


    public
        int
    $ordinal

$sorting_columns

If set, specifies a sort ordering of the rows in this RowGroup.


    public
        array<string|int, SortingColumn>
    $sorting_columns

The sorting columns can be a subset of all the columns.

$total_byte_size

Total byte size of all the uncompressed column data in this row group *.


    public
        int
    $total_byte_size

$total_compressed_size

Total byte size of all compressed (and potentially encrypted) column data in this row group *.


    public
        int
    $total_compressed_size

__construct()


    public
                    __construct([mixed $vals = null ]) : mixed

Parameters

$vals : mixed = null

getName()


    public
                    getName() : mixed

read()


    public
                    read(mixed $input) : mixed

Parameters

$input : mixed

write()


    public
                    write(mixed $output) : mixed

Parameters

$output : mixed