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improve performance of the zotfeed queries

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This commit is contained in:
friendica
2015-03-23 19:56:10 -07:00
parent d32f63df82
commit c2acab21d4
4 changed files with 23 additions and 17 deletions
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6
include/security.php
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@@ -396,13 +396,15 @@ function init_groups_visitor($contact_id) {
// will likely be too expensive.
// Returns a string list of comma separated channel_ids suitable for direct inclusion in a SQL query
function stream_perms_api_uids($perms = NULL ) {
function stream_perms_api_uids($perms = NULL, $limit = 0, $rand = 0 ) {
$perms = is_null($perms) ? (PERMS_SITE|PERMS_NETWORK|PERMS_PUBLIC) : $perms;
$ret = array();
$limit_sql = (($limit) ? " LIMIT " . intval($limit) . " " : '');
$random_sql = (($rand) ? " ORDER BY " . db_getfunc('RAND') . " " : '');
if(local_channel())
$ret[] = local_channel();
$r = q("select channel_id from channel where channel_r_stream > 0 and (channel_r_stream & %d)>0 and not (channel_pageflags & %d)>0",
$r = q("select channel_id from channel where channel_r_stream > 0 and ( channel_r_stream & %d )>0 and ( channel_pageflags & %d ) = 0 $random_sql $limit_sql ",
intval($perms),
intval(PAGE_ADULT|PAGE_CENSORED|PAGE_SYSTEM|PAGE_REMOVED)
);