/**
* Creates the unwind for $field.
*
* @param string $field
*/
public function __construct($field)
{
// doing this supports not only mixed databases, but also allows us to unwind both strings and array
$mixedFieldsBag = new MixedFieldsBag($field);
$this->addBag($mixedFieldsBag);
$unwind = new Unwind();
$unwind->setField($field);
$this->add($unwind);
}
/**
* Gets test data for the pipeline builder.
*/
public function provideAggregationPipelineTestData()
{
$unwind1 = new Unwind();
$unwind1->setField('foo');
$unwind2 = new Unwind();
$unwind2->setField('bar');
$unwind3 = new Unwind();
$unwind3->setField('baz');
$bag = new AggregationBag();
$bag->addAggregation($unwind2);
$builder = new PipelineBuilder();
$builder->add($unwind3);
return [[[$unwind1], [['$unwind' => '$foo']]], [[$bag], [['$unwind' => '$bar']]], [[$builder], [['$unwind' => '$baz']]], [[$unwind1, $bag, $builder], [['$unwind' => '$foo'], ['$unwind' => '$bar'], ['$unwind' => '$baz']]]];
}
/**
* Gets the unwind part.
*
* @param string $field
*/
private function getUnwind($field)
{
$unwind = new Unwind();
$unwind->setField($field . '_unwrapped');
return $unwind;
}