void consume(record_type const& record)
{
++m_RecordCounter;
typename values_view_type::const_iterator
it = record.attribute_values().begin(),
end = record.attribute_values().end();
for (; it != end; ++it)
++m_Consumed[it->first];
}
inline void read_record(record_type& rec)
{
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
rec.set_data(file_.buffer().first + file_.tellg());
file_.seekg(rec.size, std::ios::cur);
#else
file_.read(rec.get_data(), rec.size);
#endif
}
bool insert_record(record_type const& rec) const
{
#ifdef MAPNIK_DEBUG
assert( unsigned(sqlite3_bind_parameter_count(stmt_)) == rec.size());
#endif
record_type::const_iterator itr = rec.begin();
record_type::const_iterator end = rec.end();
int count = 1;
for (; itr!=end;++itr)
{
binder op(stmt_,count++);
if (!boost::apply_visitor(op,*itr))
{
return false;
}
}
sqlite3_step(stmt_);
sqlite3_reset(stmt_);
return true;
}
/*!
* Ordering operator
*/
result_type operator() (record_type const& left, record_type const& right) const
{
optional< attribute_value_type > left_value, right_value;
typedef typename record_type::values_view_type values_view_type;
typename values_view_type::const_iterator
it_left = left.attribute_values().find(m_Name),
it_right = right.attribute_values().find(m_Name);
if (it_left != left.attribute_values().end())
left_value = it_left->second->get< attribute_value_type >();
if (it_right != right.attribute_values().end())
right_value = it_right->second->get< attribute_value_type >();
if (left_value)
{
if (right_value)
return FunT::operator() (left_value.get(), right_value.get());
else
return false;
}
else
return !right_value;
}
