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Code Issues Releases Wiki Activity

We have to prefetch post ids from other tables where possible.

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git-svn-id: file:///svn/phpbb/branches/phpBB-3_0_0@10397 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
Andreas Fischer 2010-01-08 22:30:30 +00:00
parent 4a80b883ab
commit fffe436914
1 changed files with 92 additions and 26 deletions
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118
phpBB/feed.php
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@ -10,6 +10,9 @@
* MOD Author Profile: http://www.phpbb.com/community/memberlist.php?mode=viewprofile&u=345763
* MOD Author Homepage: http://www.mssti.com/phpbb3/
*
* Warning: Querying the posts table can be very expensive and time consuming on very large boards.
* Where possible post ids should be prefetched from another table using a separate query.
*
**/
/**
@ -1171,10 +1174,34 @@ class phpbb_feed_news extends phpbb_feed_topic_base
return false;
}
// Add global forum
$in_fid_ary[] = 0;
// We really have to get the post ids first!
$sql = 'SELECT topic_first_post_id, topic_time
FROM ' . TOPICS_TABLE . '
WHERE ' . $db->sql_in_set('forum_id', $in_fid_ary) . '
AND topic_moved_id = 0
AND topic_approved = 1
ORDER BY topic_time DESC';
$result = $db->sql_query_limit($sql, $this->num_items);
$post_ids = array();
while ($row = $db->sql_fetchrow($result))
{
$post_ids[] = (int) $row['topic_first_post_id'];
}
$db->sql_freeresult($result);
if (empty($post_ids))
{
return false;
}
$this->sql = array(
'SELECT' => 'f.forum_id, f.forum_name,
t.topic_id, t.topic_title, t.topic_poster, t.topic_first_poster_name, t.topic_replies, t.topic_views, t.topic_time,
p.post_id, p.post_text, p.bbcode_bitfield, p.bbcode_uid, p.enable_bbcode, p.enable_smilies, p.enable_magic_url',
p.post_id, p.post_time, p.post_text, p.bbcode_bitfield, p.bbcode_uid, p.enable_bbcode, p.enable_smilies, p.enable_magic_url',
'FROM' => array(
TOPICS_TABLE => 't',
POSTS_TABLE => 'p',
@ -1182,15 +1209,12 @@ class phpbb_feed_news extends phpbb_feed_topic_base
'LEFT_JOIN' => array(
array(
'FROM' => array(FORUMS_TABLE => 'f'),
'ON' => 'f.forum_id = t.forum_id',
'ON' => 'p.forum_id = f.forum_id',
),
),
'WHERE' => 'p.post_id = t.topic_first_post_id
AND t.topic_moved_id = 0
AND t.topic_approved = 1
AND (' . $db->sql_in_set('t.forum_id', $in_fid_ary) . '
OR t.topic_type = ' . POST_GLOBAL . ')',
'ORDER_BY' => 't.topic_time DESC',
'WHERE' => 'p.topic_id = t.topic_id
AND ' . $db->sql_in_set('p.post_id', $post_ids),
'ORDER_BY' => 'p.post_time DESC',
);
return true;
@ -1223,10 +1247,34 @@ class phpbb_feed_topics extends phpbb_feed_topic_base
return false;
}
// Add global forum
$in_fid_ary[] = 0;
// We really have to get the post ids first!
$sql = 'SELECT topic_first_post_id, topic_time
FROM ' . TOPICS_TABLE . '
WHERE ' . $db->sql_in_set('forum_id', $in_fid_ary) . '
AND topic_moved_id = 0
AND topic_approved = 1
ORDER BY topic_time DESC';
$result = $db->sql_query_limit($sql, $this->num_items);
$post_ids = array();
while ($row = $db->sql_fetchrow($result))
{
$post_ids[] = (int) $row['topic_first_post_id'];
}
$db->sql_freeresult($result);
if (empty($post_ids))
{
return false;
}
$this->sql = array(
'SELECT' => 'f.forum_id, f.forum_name,
t.topic_id, t.topic_title, t.topic_poster, t.topic_first_poster_name, t.topic_replies, t.topic_views, t.topic_time,
p.post_id, p.post_text, p.bbcode_bitfield, p.bbcode_uid, p.enable_bbcode, p.enable_smilies, p.enable_magic_url',
p.post_id, p.post_time, p.post_text, p.bbcode_bitfield, p.bbcode_uid, p.enable_bbcode, p.enable_smilies, p.enable_magic_url',
'FROM' => array(
TOPICS_TABLE => 't',
POSTS_TABLE => 'p',
@ -1234,15 +1282,12 @@ class phpbb_feed_topics extends phpbb_feed_topic_base
'LEFT_JOIN' => array(
array(
'FROM' => array(FORUMS_TABLE => 'f'),
'ON' => 'f.forum_id = t.forum_id',
'ON' => 'p.forum_id = f.forum_id',
),
),
'WHERE' => 'p.post_id = t.topic_first_post_id
AND t.topic_moved_id = 0
AND t.topic_approved = 1
AND (' . $db->sql_in_set('t.forum_id', $in_fid_ary) . '
OR t.topic_type = ' . POST_GLOBAL . ')',
'ORDER_BY' => 't.topic_time DESC',
'WHERE' => 'p.topic_id = t.topic_id
AND ' . $db->sql_in_set('p.post_id', $post_ids),
'ORDER_BY' => 'p.post_time DESC',
);
return true;
@ -1296,14 +1341,39 @@ class phpbb_feed_topics_active extends phpbb_feed_topic_base
return false;
}
// Add global forum
$in_fid_ary[] = 0;
// Search for topics in last X days
$last_post_time_sql = ($this->sort_days) ? ' AND t.topic_last_post_time > ' . (time() - ($this->sort_days * 24 * 3600)) : '';
$last_post_time_sql = ($this->sort_days) ? ' AND topic_last_post_time > ' . (time() - ($this->sort_days * 24 * 3600)) : '';
// We really have to get the post ids first!
$sql = 'SELECT topic_last_post_id, topic_last_post_time
FROM ' . TOPICS_TABLE . '
WHERE ' . $db->sql_in_set('forum_id', $in_fid_ary) . '
AND topic_moved_id = 0
AND topic_approved = 1
' . $last_post_time_sql . '
ORDER BY topic_last_post_time DESC';
$result = $db->sql_query_limit($sql, $this->num_items);
$post_ids = array();
while ($row = $db->sql_fetchrow($result))
{
$post_ids[] = (int) $row['topic_last_post_id'];
}
$db->sql_freeresult($result);
if (empty($post_ids))
{
return false;
}
$this->sql = array(
'SELECT' => 'f.forum_id, f.forum_name,
t.topic_id, t.topic_title, t.topic_replies, t.topic_views,
t.topic_last_poster_id, t.topic_last_poster_name, t.topic_last_post_time,
p.post_id, p.post_text, p.bbcode_bitfield, p.bbcode_uid, p.enable_bbcode, p.enable_smilies, p.enable_magic_url',
p.post_id, p.post_time, p.post_text, p.bbcode_bitfield, p.bbcode_uid, p.enable_bbcode, p.enable_smilies, p.enable_magic_url',
'FROM' => array(
TOPICS_TABLE => 't',
POSTS_TABLE => 'p',
@ -1311,16 +1381,12 @@ class phpbb_feed_topics_active extends phpbb_feed_topic_base
'LEFT_JOIN' => array(
array(
'FROM' => array(FORUMS_TABLE => 'f'),
'ON' => 'f.forum_id = t.forum_id',
'ON' => 'p.forum_id = f.forum_id',
),
),
'WHERE' => 'p.post_id = t.topic_last_post_id
' . $last_post_time_sql . '
AND t.topic_moved_id = 0
AND t.topic_approved = 1
AND (' . $db->sql_in_set('t.forum_id', $in_fid_ary) . '
OR t.topic_type = ' . POST_GLOBAL . ')',
'ORDER_BY' => 't.topic_last_post_time DESC',
'WHERE' => 'p.topic_id = t.topic_id
AND ' . $db->sql_in_set('p.post_id', $post_ids),
'ORDER_BY' => 'p.post_time DESC',
);
return true;