Flow PHP

BloomFilterHeader

Bloom filter header is stored at beginning of Bloom filter data of each column and followed by its bitset.

Properties

$_TSPEC : mixed
$algorithm : BloomFilterAlgorithm: The algorithm for setting bits. *.
$compression : BloomFilterCompression: The compression used in the Bloom filter *.
$hash : BloomFilterHash: The hash function used for Bloom filter. *.
$isValidate : mixed
$numBytes : int: The size of bitset in bytes *.

Methods

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

$_TSPEC


    public
    static    mixed
    $_TSPEC
     = [1 => ['var' => 'numBytes', 'isRequired' => true, 'type' => \Thrift\Type\TType::I32], 2 => ['var' => 'algorithm', 'isRequired' => true, 'type' => \Thrift\Type\TType::STRUCT, 'class' => '\Flow\Parquet\Thrift\BloomFilterAlgorithm'], 3 => ['var' => 'hash', 'isRequired' => true, 'type' => \Thrift\Type\TType::STRUCT, 'class' => '\Flow\Parquet\Thrift\BloomFilterHash'], 4 => ['var' => 'compression', 'isRequired' => true, 'type' => \Thrift\Type\TType::STRUCT, 'class' => '\Flow\Parquet\Thrift\BloomFilterCompression']]

$algorithm

The algorithm for setting bits. *.


    public
        BloomFilterAlgorithm
    $algorithm

$compression

The compression used in the Bloom filter *.


    public
        BloomFilterCompression
    $compression

$hash

The hash function used for Bloom filter. *.


    public
        BloomFilterHash
    $hash

$isValidate


    public
    static    mixed
    $isValidate
     = false

$numBytes

The size of bitset in bytes *.


    public
        int
    $numBytes

__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