VectorBlob.h

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/*
 * Copyright 2006-2009 Savarese Software Research Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.savarese.com/software/ApacheLicense-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __SSRC_WSPR_DATABASE_VECTOR_BLOB
#define __SSRC_WSPR_DATABASE_VECTOR_BLOB

#include <ssrc/wispers/database/Database.h>

#include <vector>
#include <cstring>

#include <boost/serialization/vector.hpp>

__BEGIN_NS_SSRC_WSPR_DATABASE

template<typename T>
struct VectorBlob : public std::vector<T> {
  typedef NS_SSRC_WSPR_DATABASE::blob_type db_value_type;
  typedef std::vector<T> super;
  typedef typename super::value_type value_type;

  VectorBlob() { }

  VectorBlob(const db_value_type & blob) {
    if(blob.first && blob.second > 0) {
      super::resize(blob.second/sizeof(value_type));
      std::memcpy(&super::operator[](0), blob.first,
                  super::size()*sizeof(value_type));
    }
  }

  friend PreparedStatement & bind_column(PreparedStatement & statement, 
                                         const unsigned int index,
                                         const VectorBlob & vec)
  {
    if(vec.empty())
      return statement.bind(index, static_cast<const void *>(0), 0);
    else
      return statement.bind(index, static_cast<const void *>(&vec[0]),
                            vec.size()*sizeof(typename VectorBlob::value_type));
  }

#if defined(BOOST_SERIALIZATION_ACCESS_HPP)
  template<class Archive>
  void serialize(Archive & ar, const unsigned int) {
    ar & boost::serialization::base_object<super>(*this);
  }
#endif
};

__END_NS_SSRC_WSPR_DATABASE

#endif