//static
void recommender_mock_storage::update_relation_key(const sfv_t& from,
const sfv_t& to,
relation_type& relmap) {
relation_type::iterator it = relmap.find(from);
if (it != relmap.end()) {
relation_type::mapped_type val;
val.swap(it->second);
relmap.erase(it);
relmap[to].swap(val);
} else {
relmap[to]; // add default value
}
}
//static
void recommender_mock_storage::get_relation(const sfv_t& query,
const relation_type& relmap,
size_t ret_num,
vector<pair<string, float> >& ids) {
ids.clear();
relation_type::const_iterator it = relmap.find(query);
if (it != relmap.end()) {
ids = it->second;
}
if (ids.size() > ret_num) {
ids.resize(ret_num);
}
}