Doctrine\ORM\Query\Parser::_processDeferredPartialObjectExpressions PHP Method

    private function _processDeferredPartialObjectExpressions()
    {
        foreach ($this->_deferredPartialObjectExpressions as $deferredItem) {
            $expr = $deferredItem['expression'];
            $class = $this->_queryComponents[$expr->identificationVariable]['metadata'];

            foreach ($expr->partialFieldSet as $field) {
                if ( ! isset($class->fieldMappings[$field])) {
                    $this->semanticalError(
                        "There is no mapped field named '$field' on class " . $class->name . ".",
                        $deferredItem['token']
                    );
                }
            }

            if (array_intersect($class->identifier, $expr->partialFieldSet) != $class->identifier) {
                $this->semanticalError(
                    "The partial field selection of class " . $class->name . " must contain the identifier.",
                    $deferredItem['token']
                );
            }
        }
    }