public function transform($collection)
    {
        if (null === $collection) {
            return null;
        }

        if (!($collection instanceof Collection)) {
            throw new UnexpectedTypeException($collection, 'Doctrine\Common\Collection\Collection');
        }

        $results = array();
        foreach ($collection as $entity) {
            $results[] = $this->accessor->getValue($entity, $this->identifier);
        }

        //Here, do not put the result in the cache because we must check the value in
        //reverseTransform (by QueryBuilder)

        return $results;
    }
public function transform($collection)
    {
        if (null === $collection) {
            return null;
        }

        if (!($collection instanceof Collection)) {
            throw new UnexpectedTypeException($collection, 'Doctrine\Common\Collection\Collection');
        }

        $results = array();
        foreach ($collection as $entity) {
            $results[] = $this->accessor->getValue($entity, $this->identifier);
        }

        //Here, do not put the result in the cache because we must check the value in
        //reverseTransform (by QueryBuilder)

        return $results;
    }
public function transform ( $ collection ) { if ( null === $ collection ) { return null ; } if ( ! ( $ collection instanceof Collection ) ) { throw new UnexpectedTypeException ( $ collection , 'Doctrine\Common\Collection\Collection' ) ; } $ results = array ( ) ; foreach ( $ collection as $ entity ) { $ results [ ] = $ this -> accessor -> getValue ( $ entity , $ this -> identifier ) ; } //Here, do not put the result in the cache because we must check the value in //reverseTransform (by QueryBuilder) return $ results ; }
Transforms Entities Collection to ids

@param Collection $collection
@return string
Transforms Entities Collection to ids