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<?php
namespace RebelCode\Wpra\Core\Data;
/**
* Abstract implementation of a data set that delegates to an inner data set.
*
* @since 4.13
*/
abstract class AbstractDelegateDataSet extends AbstractDataSet
{
/**
* The inner data set instance.
*
* @since 4.13
*
* @var DataSetInterface
*/
protected $inner;
/**
* Constructor.
*
* @since 4.13
*
* @param DataSetInterface $inner The inner data set.
*/
public function __construct(DataSetInterface $inner)
{
$this->inner = $inner;
}
/**
* Retrieves the inner key to use with the inner data set for a given outer data set key.
*
* @since 4.13
*
* @param int|string $outerKey The outer data set key.
*
* @return int|string The inner data set key.
*/
protected function getInnerKey($outerKey)
{
return $outerKey;
}
/**
* Retrieves the inner key to use with the inner data set for a given outer data set key.
*
* @since 4.13
*
* @param int|string $innerKey The inner data set key.
*
* @return int|string The outer data set key.
*/
protected function getOuterKey($innerKey)
{
return $innerKey;
}
/**
* {@inheritdoc}
*
* @since 4.13
*/
protected function get($key)
{
return $this->inner->offsetGet($this->getInnerKey($key));
}
/**
* {@inheritdoc}
*
* @since 4.13
*/
protected function has($key)
{
return $this->inner->offsetExists($this->getInnerKey($key));
}
/**
* {@inheritdoc}
*
* @since 4.13
*/
protected function set($key, $value)
{
$this->inner->offsetSet($this->getInnerKey($key), $value);
}
/**
* {@inheritdoc}
*
* @since 4.13
*/
protected function delete($key)
{
$this->inner->offsetUnset($this->getInnerKey($key));
}
/**
* {@inheritdoc}
*
* @since 4.13
*/
protected function getIterator()
{
return $this->inner;
}
/**
* {@inheritdoc}
*
* @since 4.13
*/
public function key()
{
return $this->getOuterKey($this->inner->key());
}
}