<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Db\Sql\Platform\SqlServer;
use Zend\Db\Adapter\AdapterInterface;
use Zend\Db\Adapter\Driver\DriverInterface;
use Zend\Db\Adapter\ParameterContainer;
use Zend\Db\Adapter\Platform\PlatformInterface;
use Zend\Db\Adapter\StatementContainerInterface;
use Zend\Db\Sql\Platform\PlatformDecoratorInterface;
use Zend\Db\Sql\Select;
class SelectDecorator extends Select implements PlatformDecoratorInterface
{
/**
* @var Select
*/
protected $select = null;
/**
* @param Select $select
*/
public function setSubject($select)
{
$this->select = $select;
}
/**
* @param AdapterInterface $adapter
* @param StatementContainerInterface $statementContainer
*/
public function prepareStatement(AdapterInterface $adapter, StatementContainerInterface $statementContainer)
{
// localize variables
foreach (get_object_vars($this->select) as $name => $value) {
$this->{$name} = $value;
}
// set specifications
unset($this->specifications[self::LIMIT]);
unset($this->specifications[self::OFFSET]);
$this->specifications['LIMITOFFSET'] = null;
parent::prepareStatement($adapter, $statementContainer);
}
/**
* @param PlatformInterface $platform
* @return string
*/
public function getSqlString(PlatformInterface $platform = null)
{
// localize variables
foreach (get_object_vars($this->select) as $name => $value) {
$this->{$name} = $value;
}
// set specifications
unset($this->specifications[self::LIMIT]);
unset($this->specifications[self::OFFSET]);
$this->specifications['LIMITOFFSET'] = null;
return parent::getSqlString($platform);
}
/**
* @param PlatformInterface $platform
* @param DriverInterface $driver
* @param ParameterContainer $parameterContainer
* @param $sqls
* @param $parameters
* @return null
*/
protected function processLimitOffset(PlatformInterface $platform, DriverInterface $driver = null, ParameterContainer $parameterContainer = null, &$sqls, &$parameters)
{
if ($this->limit === null && $this->offset === null) {
return null;
}
$selectParameters = $parameters[self::SELECT];
$starSuffix = $platform->getIdentifierSeparator() . self::SQL_STAR;
foreach ($selectParameters[0] as $i => $columnParameters) {
if ($columnParameters[0] == self::SQL_STAR || (isset($columnParameters[1]) && $columnParameters[1] == self::SQL_STAR) || strpos($columnParameters[0], $starSuffix)) {
$selectParameters[0] = array(array(self::SQL_STAR));
break;
}
if (isset($columnParameters[1])) {
array_shift($columnParameters);
$selectParameters[0][$i] = $columnParameters;
}
}
// first, produce column list without compound names (using the AS portion only)
array_unshift($sqls, $this->createSqlFromSpecificationAndParameters(
array('SELECT %1$s FROM (' => current($this->specifications[self::SELECT])),
$selectParameters
));
if ($parameterContainer) {
// create bottom part of query, with offset and limit using row_number
array_push($sqls, ') AS [ZEND_SQL_SERVER_LIMIT_OFFSET_EMULATION] WHERE [ZEND_SQL_SERVER_LIMIT_OFFSET_EMULATION].[__ZEND_ROW_NUMBER] BETWEEN ?+1 AND ?+?');
$parameterContainer->offsetSet('offset', $this->offset);
$parameterContainer->offsetSet('limit', $this->limit);
$parameterContainer->offsetSetReference('offsetForSum', 'offset');
} else {
array_push($sqls, ') AS [ZEND_SQL_SERVER_LIMIT_OFFSET_EMULATION] WHERE [ZEND_SQL_SERVER_LIMIT_OFFSET_EMULATION].[__ZEND_ROW_NUMBER] BETWEEN '
. (int) $this->offset . '+1 AND '
. (int) $this->limit . '+' . (int) $this->offset
);
}
if (isset($sqls[self::ORDER])) {
$orderBy = $sqls[self::ORDER];
unset($sqls[self::ORDER]);
} else {
$orderBy = 'ORDER BY (SELECT 1)';
}
// add a column for row_number() using the order specification
$parameters[self::SELECT][0][] = array('ROW_NUMBER() OVER (' . $orderBy . ')', '[__ZEND_ROW_NUMBER]');
$sqls[self::SELECT] = $this->createSqlFromSpecificationAndParameters(
$this->specifications[self::SELECT],
$parameters[self::SELECT]
);
}
}
# |
Change |
User |
Description |
Committed |
|
#1
|
18334 |
Liz Lam |
initial add of jambox |
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