if (index_ + 1 >= count_) {

return false;

}

++index_;

return decode_value();

if (collection_->value_type() == CASS_VALUE_TYPE_MAP) {

const DataType::ConstPtr& data_type =

(index_ % 2 == 0) ? collection_->primary_data_type() : collection_->secondary_data_type();

value_ = decoder_.decode_value(data_type);

} else {

value_ = decoder_.decode_value(collection_->primary_data_type());

}

return value_.is_valid();

if (next_ == end_) {

return false;

}

current_ = next_++;

value_ = decoder_.decode_value(*current_);

return value_.is_valid();