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added features(const query&) to postgis datasource

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This commit is contained in:
Artem Pavlenko 2005-04-04 13:27:23 +00:00
parent 4825baa5b6
commit fa6d2af40e
3 changed files with 34 additions and 14 deletions
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29
src/postgis/postgis.cc
View file

@ -130,7 +130,6 @@ FeaturesetPtr PostgisDatasource::featuresAll(const CoordTransform& t) const
return FeaturesetPtr(0);
}
FeaturesetPtr PostgisDatasource::featuresInBox(const CoordTransform& t,
const mapnik::Envelope<double>& box) const
{
@ -150,12 +149,36 @@ FeaturesetPtr PostgisDatasource::featuresInBox(const CoordTransform& t,
s << box.maxx() << " " << box.maxy() << ")'::box3d,"<<srid_<<")";
std::cout << s.str()<<std::endl;
ref_ptr<ResultSet> rs=conn->executeQuery(s.str(),1);
fs=new PostgisFeatureset(rs,t);
fs=new PostgisFeatureset(rs);
}
}
return FeaturesetPtr(fs);
}
FeaturesetPtr PostgisDatasource::features(const query& q) const
{
Featureset *fs=0;
const Envelope<double>& box=q.get_bbox();
ConnectionManager *mgr=ConnectionManager::instance();
ref_ptr<Pool<Connection,ConnectionCreator> > pool=mgr->getPool(creator_.id());
if (pool)
{
const ref_ptr<Connection>& conn = pool->borrowObject();
if (conn && conn->isOK())
{
PoolGuard<ref_ptr<Connection>,ref_ptr<Pool<Connection,ConnectionCreator> > > guard(conn,pool);
std::ostringstream s;
s << "select gid,asbinary("<<geometryColumn_<<") as geom from ";
s << table_<<" where "<<geometryColumn_<<" && setSRID('BOX3D(";
s << box.minx() << " " << box.miny() << ",";
s << box.maxx() << " " << box.maxy() << ")'::box3d,"<<srid_<<")";
std::cout << s.str()<<std::endl;
ref_ptr<ResultSet> rs=conn->executeQuery(s.str(),1);
fs=new PostgisFeatureset(rs);
}
}
return FeaturesetPtr(fs);
}
FeaturesetPtr PostgisDatasource::featuresAtPoint(const CoordTransform& t,
const mapnik::coord2d& pt) const
@ -177,7 +200,7 @@ FeaturesetPtr PostgisDatasource::featuresAtPoint(const CoordTransform& t,
s << pt.x << " " << pt.y << ")'::box3d,"<<srid_<<") && "<<geometryColumn_;
std::cout << s.str()<<std::endl;
ref_ptr<ResultSet> rs=conn->executeQuery(s.str(),1);
fs=new PostgisFeatureset(rs,t);
fs=new PostgisFeatureset(rs);
}
}
return FeaturesetPtr(fs);

7
src/postgis/postgis.hh
View file

@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//$Id: postgis.hh 68 2004-11-23 22:39:58Z artem $
//$Id$
#ifndef POSTGIS_HH
#define POSTGIS_HH
@ -46,6 +46,8 @@ public:
FeaturesetPtr featuresAll(const CoordTransform& t) const;
FeaturesetPtr featuresInBox(const CoordTransform& t,const mapnik::Envelope<double>& box) const;
FeaturesetPtr featuresAtPoint(const CoordTransform& t,const mapnik::coord2d& pt) const;
FeaturesetPtr features(const query& q) const;
const mapnik::Envelope<double>& envelope() const;
PostgisDatasource(const Parameters &params);
~PostgisDatasource();
@ -59,11 +61,10 @@ class PostgisFeatureset : public Featureset
{
private:
ref_ptr<ResultSet> rs_;
CoordTransform t_;
mutable int totalGeomSize_;
mutable int count_;
public:
PostgisFeatureset(const ref_ptr<ResultSet>& rs,const CoordTransform& t);
PostgisFeatureset(const ref_ptr<ResultSet>& rs);
void dispose();
Feature* next();
~PostgisFeatureset();

12
src/postgis/postgisfs.cc
View file

@ -21,18 +21,14 @@
#include "postgis.hh"
PostgisFeatureset::PostgisFeatureset(const ref_ptr<ResultSet>& rs,const CoordTransform& t)
PostgisFeatureset::PostgisFeatureset(const ref_ptr<ResultSet>& rs)
: rs_(rs),
t_(t),
totalGeomSize_(0),
count_(0)
{
}
count_(0) {}
Feature* PostgisFeatureset::next()
{
VectorFeature *feature=0;
Feature *feature=0;
if (rs_->next())
{
// read gid,srid,geometry and create feature
@ -43,7 +39,7 @@ Feature* PostgisFeatureset::next()
if (geom)
{
feature=new VectorFeature(id,geom);
feature=new Feature(id,geom);
totalGeomSize_+=size;
++count_;
}