Flow PHP

RowGroup

Properties

$_TSPEC : mixed
$columns : array<string|int, ColumnChunk>: Metadata for each column chunk in this row group.
$file_offset : null|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 : null|int: Row group ordinal in the file *
$sorting_columns : null|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 : null|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
     = array(1 => array('var' => 'columns', 'isRequired' => true, 'type' => \Thrift\Type\TType::LST, 'etype' => \Thrift\Type\TType::STRUCT, 'elem' => array('type' => \Thrift\Type\TType::STRUCT, 'class' => '\Flow\Parquet\ThriftModel\ColumnChunk')), 2 => array('var' => 'total_byte_size', 'isRequired' => true, 'type' => \Thrift\Type\TType::I64), 3 => array('var' => 'num_rows', 'isRequired' => true, 'type' => \Thrift\Type\TType::I64), 4 => array('var' => 'sorting_columns', 'isRequired' => false, 'type' => \Thrift\Type\TType::LST, 'etype' => \Thrift\Type\TType::STRUCT, 'elem' => array('type' => \Thrift\Type\TType::STRUCT, 'class' => '\Flow\Parquet\ThriftModel\SortingColumn')), 5 => array('var' => 'file_offset', 'isRequired' => false, 'type' => \Thrift\Type\TType::I64), 6 => array('var' => 'total_compressed_size', 'isRequired' => false, 'type' => \Thrift\Type\TType::I64), 7 => array('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
     = null

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
            null|int
    $file_offset
     = null

$isValidate


        public
        static    mixed
    $isValidate
     = false

$num_rows

Number of rows in this row group *


        public
            int
    $num_rows
     = null

$ordinal

Row group ordinal in the file *


        public
            null|int
    $ordinal
     = null

$sorting_columns

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


        public
            null|array<string|int, SortingColumn>
    $sorting_columns
     = null

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
     = null

$total_compressed_size

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


        public
            null|int
    $total_compressed_size
     = null

__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