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Added index hints for CUBRID and Mysql.

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git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0@9472 201d5d3c-b55e-5fd7-737f-ddc643e51545
This commit is contained in:
ucorina 2011-10-03 17:35:25 +00:00
parent 0b8949cfeb
commit 96b60466be
18 changed files with 350 additions and 4 deletions
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14
classes/db/DB.class.php
View file

@ -28,6 +28,9 @@
require(_XE_PATH_.'classes/db/queryparts/expression/UpdateExpression.class.php');
require(_XE_PATH_.'classes/db/queryparts/table/Table.class.php');
require(_XE_PATH_.'classes/db/queryparts/table/JoinTable.class.php');
require(_XE_PATH_.'classes/db/queryparts/table/CubridTableWithHint.class.php');
require(_XE_PATH_.'classes/db/queryparts/table/MysqlTableWithHint.class.php');
require(_XE_PATH_.'classes/db/queryparts/table/IndexHint.class.php');
require(_XE_PATH_.'classes/db/queryparts/condition/ConditionGroup.class.php');
require(_XE_PATH_.'classes/db/queryparts/condition/Condition.class.php');
require(_XE_PATH_.'classes/db/queryparts/condition/ConditionWithArgument.class.php');
@ -557,6 +560,15 @@
$where = $query->getWhereString($with_values);
if($where != '') $where = ' WHERE ' . $where;
$tableObjects = $query->getTables();
$index_hint_list = '';
foreach($tableObjects as $tableObject){
if(is_a($tableObject, 'CubridTableWithHint'))
$index_hint_list .= $tableObject->getIndexHintString() . ', ';
}
if($index_hint_list != '')
$index_hint_list = 'USING INDEX ' . substr($index_hint_list, 0, -2);
$groupBy = $query->getGroupByString();
if($groupBy != '') $groupBy = ' GROUP BY ' . $groupBy;
@ -566,7 +578,7 @@
$limit = $query->getLimitString();
if($limit != '') $limit = ' LIMIT ' . $limit;
return $select . ' ' . $from . ' ' . $where . ' ' . $groupBy . ' ' . $orderBy . ' ' . $limit;
return $select . ' ' . $from . ' ' . $where . ' ' . $index_hint_list . ' ' . $groupBy . ' ' . $orderBy . ' ' . $limit;
}
function getDeleteSql($query, $with_values = true){

25
classes/db/queryparts/table/CubridTableWithHint.class.php Normal file
View file

@ -0,0 +1,25 @@
<?php
class CubridTableWithHint extends Table {
var $name;
var $alias;
var $index_hints_list;
function CubridTableWithHint($name, $alias = NULL, $index_hints_list){
parent::Table($name, $alias);
$this->index_hints_list = $index_hints_list;
}
function getIndexHintString(){
$result = '';
foreach($this->index_hints_list as $index_hint){
$result .= $this->alias . '.' . $index_hint->getIndexName()
. ($index_hint->getIndexHintType() == 'FORCE' ? '(+)' : '') . ', ';
}
$result = substr($result, 0, -2);
return $result;
}
}
?>

21
classes/db/queryparts/table/IndexHint.class.php Normal file
View file

@ -0,0 +1,21 @@
<?php
class IndexHint {
var $index_name;
var $index_hint_type;
function IndexHint($index_name, $index_hint_type){
$this->index_name = $index_name;
$this->index_hint_type = $index_hint_type;
}
function getIndexName(){
return $this->index_name;
}
function getIndexHintType() {
return $this->index_hint_type;
}
}
?>

36
classes/db/queryparts/table/MysqlTableWithHint.class.php Normal file
View file

@ -0,0 +1,36 @@
<?php
class MysqlTableWithHint extends Table {
var $name;
var $alias;
var $index_hints_list;
function MysqlTableWithHint($name, $alias = NULL, $index_hints_list){
parent::Table($name, $alias);
$this->index_hints_list = $index_hints_list;
}
function toString(){
$result = parent::toString();
$use_index_hint = ''; $force_index_hint = ''; $ignore_index_hint = '';
foreach($this->index_hints_list as $index_hint){
$index_hint_type = $index_hint->getIndexHintType();
if($index_hint_type == 'USE') $use_index_hint .= $index_hint->getIndexName() . ', ';
else if($index_hint_type == 'FORCE') $force_index_hint .= $index_hint->getIndexName() . ', ';
else if($index_hint_type == 'IGNORE') $ignore_index_hint .= $index_hint->getIndexName() . ', ';
}
if($use_index_hint != ''){
$result .= ' USE INDEX (' . substr($use_index_hint, 0, -2) . ') ';
}
if($force_index_hint != ''){
$result .= ' FORCE INDEX (' . substr($force_index_hint, 0, -2) . ') ';
}
if($ignore_index_hint != ''){
$result .= ' IGNORE INDEX (' . substr($ignore_index_hint, 0, -2) . ') ';
}
return $result;
}
}
?>