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<?php
namespace DAL;
use \Psr\Log\LoggerAwareInterface;
use \Psr\Log\LoggerInterface;
use \Psr\Log\NullLogger;
abstract class AbstractDatabase implements LoggerAwareInterface, ReadableInterface, WritableInterface
{
private $logger;
/**
* Instantiates the AbstractDatabase. Should be called from inheritors.
*/
public function __construct()
$this->logger = new NullLogger();
}
* @param string $table The table that will be accessed and written.
* @param Condition|null $criteria The criteria that will filter the records.
* @param array $options The list of options that will help with finding the records.
* @return array|null One record from table, or null if there aren't any matching records.
public function find($table, Condition $criteria = null, array $options = [])
$options['limit'] = 1;
$data = $this->findAll($table, $criteria, $options);
$result = reset($data);
if ($result === false) {
return null;
return $result;
* Returns the current logger object.
*
* @return LoggerInterface
public function getLogger()
return $this->logger;
* Sets the logger to $value.
* @param LoggerInterface $value A logger to be used for this database.
* @return void
public function setLogger(LoggerInterface $value)
if (null === $value) {
$value = new NullLogger();
$this->logger = $value;
* Returns the id of the last record created, or null if no creation took place.
* Must be implemented by inheritors.
* @return mixed
abstract public function lastIdCreated();
wafflesystems /
dal
