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add index hint of using "where" syntax

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git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0@9471 201d5d3c-b55e-5fd7-737f-ddc643e51545
This commit is contained in:
lickawtl 2011-10-03 17:28:53 +00:00
parent cebf35f92a
commit 0b8949cfeb
8 changed files with 51 additions and 42 deletions
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39
classes/db/queryparts/Query.class.php
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@ -15,6 +15,8 @@
var $columnList = null;
var $_orderByString;
function Query($queryID = null
, $action = null
, $columns = null
@ -209,9 +211,10 @@
return $from;
}
function getWhereString($with_values = true){
function getWhereString($with_values = true, $with_optimization = true){
$where = '';
$condition_count = 0;
foreach($this->conditions as $conditionGroup){
if($condition_count === 0){
$conditionGroup->setPipe("");
@ -220,7 +223,24 @@
$where .= $condition_string;
$condition_count++;
}
return trim($where);
if($with_optimization &&
(strstr($this->getOrderByString(), 'list_order') || strstr($this->getOrderByString(), 'update_order'))){
if($condition_count !== 0) $where = '(' . $where .') ';
foreach($this->orderby as $order){
$colName = $order->getColumnName();
if(strstr($colName, 'list_order') || strstr($colName, 'update_order')){
$opt_condition = new ConditionWithoutArgument($colName, 2100000000, 'less', 'and');
if ($condition_count === 0) $opt_condition->setPipe("");
$where .= $opt_condition->toString($with_values).' ';
$condition_count++;
}
}
}
return trim($where);
}
function getGroupByString(){
@ -231,13 +251,16 @@
}
function getOrderByString(){
if(count($this->orderby) === 0) return '';
$orderBy = '';
foreach($this->orderby as $order){
$orderBy .= $order->toString() .', ';
if(!$this->_orderByString){
if(count($this->orderby) === 0) return '';
$orderBy = '';
foreach($this->orderby as $order){
$orderBy .= $order->toString() .', ';
}
$orderBy = substr($orderBy, 0, -2);
$this->_orderByString = $orderBy;
}
$orderBy = substr($orderBy, 0, -2);
return $orderBy;
return $this->_orderByString;
}
function getLimit(){