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<?php
/**
* ownCloud - News app
*
* @author Alessandro Cosentino
* Copyright (c) 2012 - Alessandro Cosentino <cosenal@gmail.com>
*
* This file is licensed under the Affero General Public License version 3 or later.
* See the COPYING-README file
*
*/
/**
* This class maps an item to a row of the items table in the database.
* It follows the Data Mapper pattern (see http://martinfowler.com/eaaCatalog/dataMapper.html).
*/
class OC_News_ItemMapper {
const tableName = '*PREFIX*news_items';
/**
* @brief
* @param row a row from the items table of the database
* @returns an object of the class OC_News_Item
*/
public function fromRow($row){
$url = $row['url'];
$title = $row['title'];
$guid = $row['guid'];
$status = $row['status'];
$body = $row['body'];
$id = $row['id'];
$item = new OC_News_Item($url, $title, $guid, $body, $id);
$item->setStatus($status);
return $item;
}
/**
* @brief Retrieve all the item corresponding to a feed from the database
* @param feedid The id of the feed in the database table.
*/
public function findAll($feedid){
$stmt = OCP\DB::prepare('SELECT * FROM ' . self::tableName . ' WHERE feed_id = ?');
$result = $stmt->execute(array($feedid));
$items = array();
while ($row = $result->fetchRow()) {
$item = $this->fromRow($row);
$items[] = $item;
}
return $items;
}
public function findIdFromGuid($guid, $feedid){
$stmt = OCP\DB::prepare('
SELECT * FROM ' . self::tableName . '
WHERE guid = ?
AND feed_id = ?
');
$result = $stmt->execute(array($guid, $feedid));
$row = $result->fetchRow();
$id = null;
if ($row != null){
$id = $row['id'];
}
return $id;
}
/**
* @brief Update the item after its status has changed
* @returns The item whose status has changed.
*/
public function update(OC_News_Item $item){
$itemid = $item->getId();
$status = $item->getStatus();
$stmt = OCP\DB::prepare('
UPDATE ' . self::tableName .
' SET status = ?
WHERE id = ?
');
$params=array(
$status,
$itemid
);
$stmt->execute($params);
return true;
}
/**
* @brief Save the feed and all its items into the database
* @returns The id of the feed in the database table.
*/
public function save(OC_News_Item $item, $feedid){
$guid = $item->getGuid();
$status = $item->getStatus();
$itemid = $this->findIdFromGuid($guid, $feedid);
if ($itemid == null){
$title = $item->getTitle();
$body = $item->getBody();
$stmt = OCP\DB::prepare('
INSERT INTO ' . self::tableName .
'(url, title, body, guid, feed_id, status)
VALUES (?, ?, ?, ?, ?, ?)
');
if(empty($title)) {
$l = OC_L10N::get('news');
$title = $l->t('no title');
}
if(empty($body)) {
$l = OC_L10N::get('news');
$body = $l->t('no body');
}
$params=array(
htmlspecialchars_decode($item->getUrl()),
htmlspecialchars_decode($title),
$body,
htmlspecialchars_decode($guid),
$feedid,
$status
);
$stmt->execute($params);
$itemid = OCP\DB::insertid(self::tableName);
}
else {
$this->update($item);
}
$item->setId($itemid);
return $itemid;
}
/**
* @brief Retrieve an item from the database
* @param id The id of the feed in the database table.
*/
public function find($id){
$stmt = OCP\DB::prepare('SELECT * FROM ' . self::tableName . ' WHERE id = ?');
$result = $stmt->execute(array($id));
$row = $result->fetchRow();
$item = $this->fromRow($row);
return $item;
}
/**
* @brief Permanently delete all items belonging to a feed from the database
* @param feedid The id of the feed that we wish to delete
* @return
*/
public function deleteAll($feedid){
if ($feedid == null) {
return false;
}
$stmt = OCP\DB::prepare('DELETE FROM ' . self::tableName .' WHERE feed_id = ?');
$result = $stmt->execute(array($feedid));
return $result;
}
}
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