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<?php
declare( strict_types = 1 );
namespace BatchingIterator\Fetchers;
use BatchingIterator\BatchingFetcher;
/**
* Trivial implementation of BatchingFetcher that gets its values from an iterator.
* Values are returned in first in, first out fashion.
* (In other words: an adapter from Iterator to BatchingFetcher)
*
* @since 2.0
* @licence GNU GPL v2+
* @author Jeroen De Dauw < [email protected] >
*/
class IteratorBasedBatchingFetcher implements BatchingFetcher {
private $iterator;
public function __construct( \Iterator $iterator ) {
$this->iterator = $iterator;
}
* @see BatchingFetcher::fetchNext
* @param int $maxFetchCount
* @return mixed[]
public function fetchNext( int $maxFetchCount ): array {
$values = [];
while ( !is_null( $this->iterator->key() ) && --$maxFetchCount >= 0 ) {
$values[] = $this->iterator->current();
$this->iterator->next();
return $values;
* @see BatchingFetcher::rewind
public function rewind() {
$this->iterator->rewind();
JeroenDeDauw /
BatchingIterator
