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Collection.php
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<?php
/**
* _, __, _, _ __, _ _, _, _
* / \ |_) (_ | | \ | /_\ |\ |
* \ / |_) , ) | |_/ | | | | \|
* ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
*
* Collection class
*
* @package ObsidianWorkspaces
* @subpackage Collection
* @author Sébastien Santoro aka Dereckson <dereckson@espace-win.org>
* @license http://www.opensource.org/licenses/bsd-license.php BSD
* @filesource
*/
/**
* Collection class
*
* This abstract class repreesnts a collection of documents
*/
abstract class Collection {
/**
* @var string The collection identifiant
*/
public $id;
/**
* @var string the name of the document collection class to use
*/
public $documentType = 'CollectionDocument';
///
/// CRUD features
///
/**
* Adds a document to the collection
*
* @param CollectionDocument $document The document to add
* @return boolean true if the operation succeeded; otherwise, false.
*/
public abstract function add (CollectionDocument &$document);
/**
* Deletes a document from the collection
*
* @param string $documentId The identifiant of the document to delete
* @return boolean true if the operation succeeded; otherwise, false.
*/
public abstract function delete ($documentId);
/**
* Determines if a document exists
*
* @param CollectionDocument $document The document to check
* @return boolean true if the document exists; otherwise, false.
*/
public abstract function exists (CollectionDocument $document);
/**
* Updates a document in the collection
*
* @param CollectionDocument $document The document to update
* @return boolean true if the operation succeeded; otherwise, false.
*/
public abstract function update (CollectionDocument &$document);
/**
* Gets a document from the collection
*
* @param string $documentId The identifiant of the document to get
* @param CollectionDocument $document The document
*/
public abstract function get ($documentId);
/**
* Adds or updates a document in the collection
*
* @param CollectionDocument $document The document to set
* @return boolean true if the operation succeeded; otherwise, false.
*/
public function set (CollectionDocument &$document) {
if ($document->id !== null && $this->exists($document)) {
return $this->update($document);
} else {
return $this->add($document);
}
}
}

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