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<?php
/*
* $Id: Geographical.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>.
*/
/**
* Easily add longitude and latitude columns to your records and use inherited functionality for
* calculating distances
*
* @package Doctrine
* @subpackage Template
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.0
* @version $Revision$
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Jonathan H. Wage <jonwage@gmail.com>
*/
class Doctrine_Template_Geographical extends Doctrine_Template
{
/**
* Array of geographical options
*
* @var string
*/
protected $_options = array('latitude' => array('name' => 'latitude',
'type' => 'double',
'size' => null,
'options' => array()),
'longitude' => array('name' => 'longitude',
'type' => 'double',
'size' => null,
'options' => array()));
/**
* Set table definition for Geographical behavior
*
* @return void
*/
public function setTableDefinition()
{
$this->hasColumn($this->_options['latitude']['name'], $this->_options['latitude']['type'], $this->_options['latitude']['size'], $this->_options['latitude']['options']);
$this->hasColumn($this->_options['longitude']['name'], $this->_options['longitude']['type'], $this->_options['longitude']['size'], $this->_options['longitude']['options']);
}
/**
* Initiate and get a distance query with the select parts for the number of kilometers and miles
* between this record and other zipcode records in the database
*
* @return Doctrine_Query $query
*/
public function getDistanceQuery()
{
$invoker = $this->getInvoker();
$query = $invoker->getTable()->createQuery();
$rootAlias = $query->getRootAlias();
$latName = $this->_options['latitude']['name'];
$longName = $this->_options['longitude']['name'];
$query->addSelect($rootAlias . '.*');
$sql = "((ACOS(SIN(%s * PI() / 180) * SIN(" . $rootAlias . "." . $latName . " * PI() / 180) + COS(%s * PI() / 180) * COS(" . $rootAlias . "." . $latName . " * PI() / 180) * COS((%s - " . $rootAlias . "." . $longName . ") * PI() / 180)) * 180 / PI()) * 60 * %s) as %s";
$milesSql = sprintf($sql, $invoker->get($latName), $invoker->get($latName), $invoker->get($longName), '1.1515', 'miles');
$query->addSelect($milesSql);
$kilometersSql = sprintf($sql, $invoker->get($latName), $invoker->get($latName), $invoker->get($longName), '1.1515 * 1.609344', 'kilometers');
$query->addSelect($kilometersSql);
return $query;
}
/**
* Get distance between this record and another
*
* @param string $Doctrine_Record
* @param string $kilometers
* @return integer
*/
public function getDistance(Doctrine_Record $record, $kilometers = false)
{
$query = $this->getDistanceQuery($kilometers);
$conditions = array();
$values = array();
foreach ((array) $record->getTable()->getIdentifier() as $id) {
$conditions[] = $query->getRootAlias() . '.' . $id . ' = ?';
$values[] = $record->get($id);
}
$where = implode(' AND ', $conditions);
$query->addWhere($where, $values);
$query->limit(1);
$result = $query->execute()->getFirst();
if (isset($result['kilometers']) && $result['miles']) {
return $kilometers ? $result->get('kilometers'):$result->get('miles');
} else {
return 0;
}
}
}