BitMagicC++Library
svsample02.cpp

Example of how to serialize bm::sparse_vector<> template class

See also
bm::sparse_vector<>
bm::sparse_vector<>::push_back
bm::sparse_vector<>::equal
bm::sparse_vector_serialize
bm::sparse_vector_deserialize
/*
Copyright(c) 2002-2017 Anatoliy Kuznetsov(anatoliy_kuznetsov at yahoo.com)
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
http://www.apache.org/licenses/LICENSE-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.
For more information please visit: http://bitmagic.io
*/
/** \example svsample02.cpp
Example of how to serialize bm::sparse_vector<> template class
\sa bm::sparse_vector<>
\sa bm::sparse_vector<>::push_back
\sa bm::sparse_vector<>::equal
\sa bm::sparse_vector_serialize
\sa bm::sparse_vector_deserialize
*/
#include <iostream>
#include <vector>
#include "bmsparsevec.h"
using namespace std;
int main(void)
{
try
{
svector sv1;
svector sv2;
// temp buffer to avoid unnecessary re-allocations
for (unsigned i = 0; i < 128000; ++i)
{
sv1.push_back(8);
}
// optimize memory allocation of sparse vector
sv1.optimize(tb);
bm::sparse_vector_serialize(sv1, sv_lay, tb);
// copy serialization buffer to some other location
// to simulate data-base storage or network transaction
//
const unsigned char* buf = sv_lay.buf();
size_t buf_size = sv_lay.size();
vector<unsigned char> tmp_buf(buf_size);
::memcpy(&tmp_buf[0], buf, buf_size);
int res = bm::sparse_vector_deserialize(sv2, &tmp_buf[0], tb);
if (res != 0)
{
cerr << "De-Serialization error in TestEqualSparseVectors()" << endl;
exit(1);
}
if (!sv1.equal(sv2) )
{
cerr << "Error! Please report a bug to BitMagic project support." << endl;
}
cout << sv2.size() << endl;
}
catch(std::exception& ex)
{
std::cerr << ex.what() << std::endl;
return 1;
}
return 0;
}