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<?php
/*
* $Id: OnDemand.php 10831 2013-05-29 19:32:17Z btowles $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
/**
* Doctrine_Collection_OnDemand
* iterates through Doctrine_Records hydrating one at a time
*
* @package Doctrine
* @subpackage Collection
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.1
* @version $Revision$
* @author Geoff Davis <geoff.davis@gmedia.com.au>
*/
class Doctrine_Collection_OnDemand implements Iterator
{
protected $_stmt;
protected $_current;
protected $_tableAliasMap;
protected $_hydrator;
protected $index;
public function __construct($stmt, $hydrator, $tableAliasMap)
{
$this->_stmt = $stmt;
$this->_hydrator = $hydrator;
$this->_tableAliasMap = $tableAliasMap;
$this->_current = null;
$this->index = 0;
$this->_hydrateCurrent();
}
private function _hydrateCurrent()
{
$record = $this->_hydrator->hydrateResultSet($this->_stmt);
if ($record instanceof Doctrine_Collection) {
$this->_current = $record->getFirst();
} else if (is_array($record) && count($record) == 0) {
$this->_current = null;
} else if (is_array($record) && isset($record[0])) {
$this->_current = $record[0];
} else {
$this->_current = $record;
}
}
public function rewind()
{
$this->index = 0;
$this->_stmt->closeCursor();
$this->_stmt->execute();
$this->_hydrator->onDemandReset();
$this->_hydrateCurrent();
}
public function key()
{
return $this->index;
}
public function current()
{
return $this->_current;
}
public function next()
{
$this->_current = null;
$this->index++;
$this->_hydrateCurrent();
}
public function valid()
{
if ( ! is_null($this->_current) && $this->_current !== false) {
return true;
}
return false;
}
}