Flow PHP

DataPageHeader

Data page header.

Properties

$_TSPEC : mixed
$definition_level_encoding : int: Encoding used for definition levels *.
$encoding : int: Encoding used for this data page *.
$isValidate : mixed
$num_values : int: Number of values, including NULLs, in this data page.
$repetition_level_encoding : int: Encoding used for repetition levels *.
$statistics : Statistics: Optional statistics for the data in this page *.

Methods

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

$_TSPEC


    public
    static    mixed
    $_TSPEC
     = [1 => ['var' => 'num_values', 'isRequired' => true, 'type' => \Thrift\Type\TType::I32], 2 => ['var' => 'encoding', 'isRequired' => true, 'type' => \Thrift\Type\TType::I32, 'class' => '\Flow\Parquet\Thrift\Encoding'], 3 => ['var' => 'definition_level_encoding', 'isRequired' => true, 'type' => \Thrift\Type\TType::I32, 'class' => '\Flow\Parquet\Thrift\Encoding'], 4 => ['var' => 'repetition_level_encoding', 'isRequired' => true, 'type' => \Thrift\Type\TType::I32, 'class' => '\Flow\Parquet\Thrift\Encoding'], 5 => ['var' => 'statistics', 'isRequired' => false, 'type' => \Thrift\Type\TType::STRUCT, 'class' => '\Flow\Parquet\Thrift\Statistics']]

$definition_level_encoding

Encoding used for definition levels *.


    public
        int
    $definition_level_encoding

$encoding

Encoding used for this data page *.


    public
        int
    $encoding

$isValidate


    public
    static    mixed
    $isValidate
     = false

$num_values

Number of values, including NULLs, in this data page.


    public
        int
    $num_values

If a OffsetIndex is present, a page must begin at a row boundary (repetition_level = 0). Otherwise, pages may begin within a row (repetition_level > 0).

$repetition_level_encoding

Encoding used for repetition levels *.


    public
        int
    $repetition_level_encoding

$statistics

Optional statistics for the data in this page *.


    public
        Statistics
    $statistics

__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