mirror of
https://github.com/predis/predis.git
synced 2026-08-20 16:42:30 +00:00
Daniele Alessandri
5ad00774e1
We are experimenting with a new approach at naming classes using less
redundant names by leveraging the containing namespace. The PHP "use"
directive is not limited to class names but can be used to import the
whole namespace, which means you can do something like this:
use Predis\Collection\Iterator;
// ...
foreach (new Iterator\Keyspace($client) as $key) {
// ...
}
Alternatively you can always rely on "use ... as ..." to import one of
the classes by giving it a more meaningful name in the context of the
root namespace:
use Predis\Collection\Iterator\Keyspace as KeyspaceIterator;
// ...
foreach (new KeyspaceIterator($client) as $key) {
// ...
}
In this specific case we chose to apply the -Key postfix to classes
iterating Redis keys to be more explicit about the fact that those
iterators does not work on local in-memory collections, but fetch
items from a key stored on a remote Redis server.
57 lines
1.2 KiB
PHP
57 lines
1.2 KiB
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of the Predis package.
|
|
*
|
|
* (c) Daniele Alessandri <suppakilla@gmail.com>
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace Predis\Collection\Iterator;
|
|
|
|
use Predis\ClientInterface;
|
|
|
|
/**
|
|
* Abstracts the iteration of fields and values of an hash
|
|
* by leveraging the HSCAN command (Redis >= 2.8) wrapped
|
|
* in a fully-rewindable PHP iterator.
|
|
*
|
|
* @author Daniele Alessandri <suppakilla@gmail.com>
|
|
* @link http://redis.io/commands/scan
|
|
*/
|
|
class HashKey extends CursorBasedIterator
|
|
{
|
|
protected $key;
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function __construct(ClientInterface $client, $key, $match = null, $count = null)
|
|
{
|
|
$this->requiredCommand($client, 'HSCAN');
|
|
|
|
parent::__construct($client, $match, $count);
|
|
|
|
$this->key = $key;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
protected function executeCommand()
|
|
{
|
|
return $this->client->hscan($this->key, $this->cursor, $this->getScanOptions());
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
protected function extractNext()
|
|
{
|
|
$this->position = key($this->elements);
|
|
$this->current = array_shift($this->elements);
|
|
}
|
|
}
|