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<?php
/*
* This file is part of the xAPI package.
*
* (c) Christian Flothmann <christian.flothmann@xabbuh.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Xabbuh\XApi\Model;
/**
* An Experience API document.
*
* A document is immutable. This means that it can be accessed like an array.
* But you can only do this to read data. Thus an {@link UnsupportedOperationException}
* is thrown when you try to unset data or to manipulate them.
*
* @author Christian Flothmann <christian.flothmann@xabbuh.de>
*/
abstract class Document implements \ArrayAccess
{
private $data;
public function __construct(DocumentData $data)
{
$this->data = $data;
}
/**
* {@inheritDoc}
*/
public function offsetExists($offset): bool
{
return isset($this->data[$offset]);
}
/**
* {@inheritDoc}
*/
public function offsetGet($offset)
{
return $this->data[$offset];
}
/**
* {@inheritDoc}
*/
public function offsetSet($offset, $value): void
{
$this->data[$offset] = $value;
}
/**
* {@inheritDoc}
*/
public function offsetUnset($offset): void
{
unset($this->data[$offset]);
}
/**
* Returns the document's data.
*/
public function getData(): DocumentData
{
return $this->data;
}
}
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