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features at point impl

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This commit is contained in:
Artem Pavlenko 2006-12-01 11:45:08 +00:00
parent c6ee7ce438
commit f4786fe76a
1 changed files with 37 additions and 2 deletions
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39
plugins/input/postgis/postgis.cpp
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@ -197,7 +197,8 @@ featureset_ptr postgis_datasource::features(const query& q) const
s << "select asbinary("<<geometryColumn_<<") as geom";
std::set<std::string> const& props=q.property_names();
std::set<std::string>::const_iterator pos=props.begin();
while (pos!=props.end())
std::set<std::string>::const_iterator end=props.end();
while (pos != end)
{
s <<",\""<<*pos<<"\"";
++pos;
@ -206,7 +207,7 @@ featureset_ptr postgis_datasource::features(const query& q) const
s << std::setprecision(16);
s << box.minx() << " " << box.miny() << ",";
s << box.maxx() << " " << box.maxy() << ")'::box3d,"<<srid_<<")";
#ifdef MAPNIK_DEBUG
std::clog << s.str() << "\n";
#endif
@ -219,6 +220,40 @@ featureset_ptr postgis_datasource::features(const query& q) const
featureset_ptr postgis_datasource::features_at_point(coord2d const& pt) const
{
ConnectionManager *mgr=ConnectionManager::instance();
shared_ptr<Pool<Connection,ConnectionCreator> > pool=mgr->getPool(creator_.id());
if (pool)
{
shared_ptr<Connection> conn = pool->borrowObject();
if (conn && conn->isOK())
{
PoolGuard<shared_ptr<Connection>,shared_ptr<Pool<Connection,ConnectionCreator> > > guard(conn,pool);
std::ostringstream s;
s << "select asbinary(" << geometryColumn_ << ") as geom";
std::vector<attribute_descriptor>::const_iterator itr = desc_.get_descriptors().begin();
std::vector<attribute_descriptor>::const_iterator end = desc_.get_descriptors().end();
unsigned size=0;
while (itr != end)
{
s <<",\""<< itr->get_name() << "\"";
++itr;
++size;
}
s << " from " << table_<<" where "<<geometryColumn_<<" && setSRID('BOX3D(";
s << std::setprecision(16);
s << pt.x << " " << pt.y << ",";
s << pt.x << " " << pt.y << ")'::box3d,"<<srid_<<")";
#ifdef MAPNIK_DEBUG
std::clog << s.str() << "\n";
#endif
shared_ptr<ResultSet> rs=conn->executeQuery(s.str(),1);
return featureset_ptr(new postgis_featureset(rs, size));
}
}
return featureset_ptr();
}