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Proposed attempt at enhancing database queries

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This commit is contained in:
Mark Pemberton 2011-02-27 00:08:25 -05:00
parent 38fde526eb
commit 7109719b5c
1 changed files with 25 additions and 20 deletions
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45
src/SemanticScuttle/Service/Bookmark.php
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@ -705,15 +705,15 @@ class SemanticScuttle_Service_Bookmark extends SemanticScuttle_DbService
if ($userservice->isLoggedOn()) {
// All public bookmarks, user's own bookmarks
// and any shared with user
$privacy = ' AND ((B.bStatus = 0) OR (B.uId = '. $sId .')';
$watchnames = $userservice->getWatchNames($sId, true);
foreach ($watchnames as $watchuser) {
$privacy .= ' OR (U.username = "'. $watchuser .'" AND B.bStatus = 1)';
$privacy = ' ((B.bStatus = 0) OR (B.uId = '. $sId .')';
$watchlist = $userservice->getWatchlist($sId);
foreach ($watchlist as $watchuserID) {
$privacy .= ' OR (B.uId = '. $watchuserID .' AND B.bStatus = 1)';
}
$privacy .= ')';
} else {
// Just public bookmarks
$privacy = ' AND B.bStatus = 0';
$privacy = ' B.bStatus = 0';
}
// Set up the tags, if need be.
@ -727,16 +727,20 @@ class SemanticScuttle_Service_Bookmark extends SemanticScuttle_DbService
}
// Set up the SQL query.
$query_1 = 'SELECT DISTINCT ';
$query_1 = 'SELECT DISTINCT(B.bHash), ';
$query_1.= '(select '. $userservice->getFieldName('username');
$query_1.= ' from '. $userservice->getTableName();
$query_1.= ' where uId=B.uId';
$query_1.= ') as '. $userservice->getFieldName('username') .', ';
if (SQL_LAYER == 'mysql4') {
$query_1 .= 'SQL_CALC_FOUND_ROWS ';
}
$query_1 .= 'B.*, U.'. $userservice->getFieldName('username');
$query_1 .= 'B.*';
$query_2 = ' FROM '. $userservice->getTableName() .' AS U'
. ', '. $this->getTableName() .' AS B';
$query_2 = ' FROM '. $this->getTableName() .' AS B';
$query_3 = ' WHERE B.uId = U.'. $userservice->getFieldName('primary') . $privacy;
$query_3 = ' WHERE '. $privacy;
if ($GLOBALS['enableVoting'] && $GLOBALS['hideBelowVoting'] !== null
&& !$userservice->isAdmin($userservice->getCurrentUserId())
@ -745,9 +749,11 @@ class SemanticScuttle_Service_Bookmark extends SemanticScuttle_DbService
}
if (is_null($watched)) {
/*
if (!is_null($user)) {
$query_3 .= ' AND B.uId = '. $user;
}
*/
} else {
$arrWatch = $userservice->getWatchlist($user);
if (count($arrWatch) > 0) {
@ -763,20 +769,14 @@ class SemanticScuttle_Service_Bookmark extends SemanticScuttle_DbService
}
$query_5 = '';
if ($hash == null) {
$query_5.= ' GROUP BY B.bHash';
}
//Voting system
//needs to be directly after FROM bookmarks
if ($GLOBALS['enableVoting'] && $userservice->isLoggedOn()) {
$cuid = $userservice->getCurrentUserId();
$vs = SemanticScuttle_Service_Factory::get('Vote');
$query_1 .= ', !ISNULL(V.bId) as hasVoted, V.vote as vote';
$query_2 .= ' LEFT JOIN ' . $vs->getTableName() . ' AS V'
. ' ON B.bId = V.bId'
. ' AND V.uId = ' . (int)$cuid;
$query_1 .= ', (select !ISNULL(bId) from '.$vs->getTableName().' where bId=B.bId and uId='.(int)$cuid.') as hasVoted, (select vote from '.$vs->getTableName().' where bId=B.bId and uId='.(int)$cuid.') as vote';
}
switch($sortOrder) {
@ -805,6 +805,11 @@ class SemanticScuttle_Service_Bookmark extends SemanticScuttle_DbService
$query_5 .= ' ORDER BY B.' . $GLOBALS['dateOrderField'] . ' DESC ';
}
// Add GROUP BY only if tag is given
if ($tagcount > 0) {
$query_5 = ' GROUP BY B.bHash' . $query_5;
}
// Handle the parts of the query that depend on any tags that are present.
$query_4 = '';
for ($i = 0; $i < $tagcount; $i ++) {
@ -854,9 +859,9 @@ class SemanticScuttle_Service_Bookmark extends SemanticScuttle_DbService
$query_4 .= ' OR B.bPrivateNote LIKE "'
. $this->db->sql_escape($aTerms[$i])
.'%"';
$query_4 .= ' OR U.username = "'
$query_4 .= ' OR B.uId = (select '.$userservice->getFieldName('primary').' from '.$userservice->getTableName().' where '.$userservice->getFieldName('username').'="'
. $this->db->sql_escape($aTerms[$i])
. '"'; //exact match for username
. '")';
if ($dotags) {
$query_4 .= ' OR T.tag LIKE "'
. $this->db->sql_escape($aTerms[$i])