BaseQueryFactory.php

<?php

namespace DG\CommonBundle\Model;

/**
 * QueryFactory to satisfy PHPSpec
 *
 * @author      Ivan Plamenov Tanev aka CraftyShadow <vankata.t@gmail.com>
 */
class QueryFactory
{
    protected $ns_prefix;

    public function setNamespacePrefix($ns_prefix)
    {
        $this->ns_prefix = $ns_prefix;
    }

    /**
     * @param string   $name
     * @param string   $modelAlias
     * @param Criteria $criteria
     *
     * @return ModelCriteria
     */
    public function create($name, $modelAlias = null, $criteria = null)
    {
        if (false === strpos($name, '\\')) {
            $name  = $this->ns_prefix . '\\' . $name;
        }

        return call_user_func(array($name, 'create'), $modelAlias, $criteria);
    }

    public function __call($name, $arguments)
    {
        if (0 === strpos($name, 'create')) {
            return $this->create(
                substr($name, 6),
                isset($arguments[0]) ? $arguments[0] : null,
                isset($arguments[1]) ? $arguments[1] : null
            );
        }

        throw new \Exception('Call to undefined method: ' . $name);
    }
}

UsesQueries.php

<?php

use DG\GradiniBundle\Model\Webservice\QueryFactory;

class UsesQueries
{

    /** @var QueryFactory **/
    protected $qf;
  
    public function __construct(QueryFactory $qf)
    {
        $this->qf = $qf;
    }
  
    public function doSomething()
    {
        //$q is the proper type and has autocompletion for all methods of RegionQuery
        $q = $this->qf->createRegionQuery();
    
        $q->find();
    }
  
}

UsesQuerySpec.php

<?php

namespace spec\DG\GradiniBundle\Model\Webservice;

use PhpSpec\ObjectBehavior;
use Prophecy\Argument;

class QueryFactorySpec extends ObjectBehavior
{
    /**
     * @param DG\GradiniBundle\Model\Webservice\QueryFactory $qf;
     */
    public function let($qf)
    {
        $this->beConstructedWith($qf)
    }
    /**
     * @param DG\GradiniBundle\Model\Webservice\QueryFactory $qf;
     * @param DG\GradiniBundle\Model\Webservice\RegionQuery $q;
     */
    public function it_tests_do_something($qf, $q)
    {
        $q->find()->willReturn(array('whatever'));
        $qf->getRegionQuery()->willReturn($q);
    }

}

WebserviceQueryFactory.php

<?php

namespace DG\GradiniBundle\Model\Webservice;

use DG\CommonBundle\Model\QueryFactory as BaseQueryFactory;

/**
 * QueryFactory for the GradiniBundle Webservice Model
 *
 * @author      Ivan Plamenov Tanev aka CraftyShadow <vankata.t@gmail.com>
 */
class QueryFactory extends BaseQueryFactory
{
    protected $ns_prefix = 'DG\\GradiniBundle\\Model\\Webservice';

    /**
     * @param  string                   $modelAlias
     * @param  \Criteria|\ModelCriteria $criteria
     * @return RegionQuery
     */
    public function createRegionQuery($modelAlias = null, $criteria = null)
    {
        return $this->create('RegionQuery', $modelAlias, $criteria);
    }

}