query_results_impl.hpp

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/*
 * Copyright (c) 2008, Willow Garage, Inc.
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namespace warehouse_ros
{
template <class M>
ResultIterator<M>::ResultIterator(ResultIteratorHelper::Ptr results, bool metadata_only)
  : results_(results), metadata_only_(metadata_only)
{
  if (!results_->hasData())
    results_.reset();
}

template <class M>
ResultIterator<M>::ResultIterator(const ResultIterator<M>& other)
  : results_(other.results_), metadata_only_(other.metadata_only_)
{
}

template <class M>
ResultIterator<M>::ResultIterator() : metadata_only_(false)
{
}

template <class M>
ResultIterator<M>::~ResultIterator()
{
}

template <class M>
ResultIterator<M>& ResultIterator<M>::operator=(const ResultIterator& other)
{
  results_ = other.results_;
  metadata_only_ = other.metadata_only_;
  return *this;
}

template <class M>
void ResultIterator<M>::increment()
{
  if (!results_->next())
  {
    results_.reset();
  }
}

template <class M>
typename MessageWithMetadata<M>::ConstPtr ResultIterator<M>::dereference() const
{
  ROS_ASSERT(results_);

  typename MessageWithMetadata<M>::Ptr msg(new MessageWithMetadata<M>(results_->metadata()));
  if (!metadata_only_)
  {
    std::string str = results_->message();
    uint8_t* buf = (uint8_t*)str.c_str();
    ros::serialization::IStream istream(buf, str.size());
    ros::serialization::Serializer<M>::read(istream, *msg);
  }
  return msg;
}

template <class M>
bool ResultIterator<M>::equal(const ResultIterator<M>& other) const
{
  // Incomplete, the only case we care about is whether iter is at the end
  return (!results_ && !other.results_);
}

}  // namespace warehouse_ros