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Break up stream code to use separate notice stream classes

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Rearchitect (again!) notice stream code to delegate different functionality up and down the stack.

Now, different classes implement NoticeStream.
This commit is contained in:
Evan Prodromou
2011-03-24 18:04:19 -04:00
parent e0cccfc40d
commit 44bcc942b8
21 changed files with 816 additions and 524 deletions
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45
classes/File.php
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@@ -449,53 +449,10 @@ class File extends Memcached_DataObject
function stream($offset=0, $limit=NOTICES_PER_PAGE, $since_id=0, $max_id=0)
{
$stream = new NoticeStream(array($this, '_streamDirect'),
array(),
'file:notice-ids:'.$this->url);
$stream = new FileNoticeStream($this);
return $stream->getNotices($offset, $limit, $since_id, $max_id);
}
/**
* Stream of notices linking to this URL
*
* @param integer $offset Offset to show; default is 0
* @param integer $limit Limit of notices to show
* @param integer $since_id Since this notice
* @param integer $max_id Before this notice
*
* @return array ids of notices that link to this file
*/
function _streamDirect($offset, $limit, $since_id, $max_id)
{
$f2p = new File_to_post();
$f2p->selectAdd();
$f2p->selectAdd('post_id');
$f2p->file_id = $this->id;
Notice::addWhereSinceId($f2p, $since_id, 'post_id', 'modified');
Notice::addWhereMaxId($f2p, $max_id, 'post_id', 'modified');
$f2p->orderBy('modified DESC, post_id DESC');
if (!is_null($offset)) {
$f2p->limit($offset, $limit);
}
$ids = array();
if ($f2p->find()) {
while ($f2p->fetch()) {
$ids[] = $f2p->post_id;
}
}
return $ids;
}
function noticeCount()
{
$cacheKey = sprintf('file:notice-count:%d', $this->id);