Flow PHP

InMemoryRows implements Sniffer

Read onlyYes

FinalYes

Interfaces

Sniffer

Methods

__construct() : mixed
bytes() : int<0, max>
close() : void: Releases what the sniffs left open.
names() : array<int, string>
parts() : array<int, self>: Live one-unit sniffers that together cover $unit (unit 0 of each; the parent-resolved header and candidate set): a source that can be cut hands out one per byte window of about $targetBytes, every other one hands out [itself over $unit]. A part runs in a worker when it is Describable with a non-null describe(); the parts' samples merged in order are the unit's sample.
sniff() : Sample
units() : int<0, max>
values() : Generator<int, array<string|int, mixed>>: The same ColumnName normalisation array_to_rows() applies, so the fold's names are the batch builder's names.

__construct()


    public
                    __construct(iterable<string|int, array<string|int, mixed>> $rows[, TypeNarrower $typer = new InstanceOfTypeNarrower() ]) : mixed

Parameters

$rows : iterable<string|int, array<string|int, mixed>>
$typer : TypeNarrower = new InstanceOfTypeNarrower()

bytes()


    public
                    bytes(int $unit) : int<0, max>

Parameters

$unit : int

Return values

int<0, max> —

on-disk bytes of the unit; 0 when unknown or in memory

close()

Releases what the sniffs left open.


    public
                    close() : void

names()


    public
                    names() : array<int, string>

Return values

array<int, string> —

columns known before any row - a header; [] for a headerless source

parts()

Live one-unit sniffers that together cover $unit (unit 0 of each; the parent-resolved header and candidate set): a source that can be cut hands out one per byte window of about $targetBytes, every other one hands out [itself over $unit]. A part runs in a worker when it is Describable with a non-null describe(); the parts' samples merged in order are the unit's sample.


    public
                    parts(int $unit, int $targetBytes) : array<int, self>

Parameters

$unit : int
$targetBytes : int

Return values

array<int, self>

sniff()


    public
                    sniff(int $unit, int|null $rowBudget) : Sample

Parameters

$unit : int
$rowBudget : int|null: rows to observe from this unit, 0 for none, null for every row

Return values

Sample

units()


    public
                    units() : int<0, max>

Return values

int<0, max>

values()

The same ColumnName normalisation array_to_rows() applies, so the fold's names are the batch builder's names.


    public
                    values() : Generator<int, array<string|int, mixed>>

Return values

Generator<int, array<string|int, mixed>>