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<?php
namespace Fathomminds\Rest\Database\DynamoDb;
use Aws\DynamoDb\DynamoDbClient;
use Aws\DynamoDb\Marshaler;
abstract class DatabaseOperation
{
protected $client;
protected $lastEvaluatedKey;
protected $query;
protected $result;
protected $first = true;
public function __construct(DynamoDbClient $client, $query)
$this->client = $client;
$this->query = $query;
}
public function next()
if (!$this->first && $this->lastEvaluatedKey === null) {
return null;
$this->first = false;
$query = $this->setExclusiveStartKey($this->query);
$result = $this->execute($query);
$this->setLastEvaluatedKey($result);
return $result;
abstract protected function execute($query);
protected function setExclusiveStartKey($query)
if ($this->lastEvaluatedKey !== null) {
$query['ExclusiveStartKey'] = $this->lastEvaluatedKey;
return $query;
protected function setLastEvaluatedKey($result)
$this->lastEvaluatedKey = null;
if (!empty($result['LastEvaluatedKey'])) {
$this->lastEvaluatedKey = $result['LastEvaluatedKey'];
fathomminds /
php-rest-models
