def save_package_extent(package_id, geometry=None, srid=None):
'''Adds, updates or deletes the package extent geometry.
package_id: Package unique identifier
geometry: a Python object implementing the Python Geo Interface
(i.e a loaded GeoJSON object)
srid: The spatial reference in which the geometry is provided.
If None, it defaults to the DB srid.
Will throw ValueError if the geometry object does not provide a geo interface.
The responsibility for calling model.Session.commit() is left to the
caller.
'''
db_srid = int(config.get('ckan.spatial.srid', '4326'))
existing_package_extent = Session.query(PackageExtent).filter(
PackageExtent.package_id == package_id).first()
if geometry:
shape = asShape(geometry)
if not srid:
srid = db_srid
package_extent = PackageExtent(package_id=package_id,
the_geom=WKTElement(shape.wkt, srid))
# Check if extent exists
if existing_package_extent:
# If extent exists but we received no geometry, we'll delete the existing one
if not geometry:
existing_package_extent.delete()
log.debug('Deleted extent for package %s' % package_id)
else:
# Check if extent changed
if not compare_geometry_fields(package_extent.the_geom,
existing_package_extent.the_geom):
# Update extent
existing_package_extent.the_geom = package_extent.the_geom
existing_package_extent.save()
log.debug('Updated extent for package %s' % package_id)
else:
log.debug('Extent for package %s unchanged' % package_id)
elif geometry:
# Insert extent
Session.add(package_extent)
log.debug('Created new extent for package %s' % package_id)
def save_package_extent(package_id, geometry = None, srid = None):
'''Adds, updates or deletes the package extent geometry.
package_id: Package unique identifier
geometry: a Python object implementing the Python Geo Interface
(i.e a loaded GeoJSON object)
srid: The spatial reference in which the geometry is provided.
If None, it defaults to the DB srid.
Will throw ValueError if the geometry object does not provide a geo interface.
The responsibility for calling model.Session.commit() is left to the
caller.
'''
db_srid = int(config.get('ckan.spatial.srid', '4326'))
existing_package_extent = Session.query(PackageExtent).filter(PackageExtent.package_id==package_id).first()
if geometry:
shape = asShape(geometry)
if not srid:
srid = db_srid
package_extent = PackageExtent(package_id=package_id,
the_geom=WKTElement(shape.wkt, srid))
# Check if extent exists
if existing_package_extent:
# If extent exists but we received no geometry, we'll delete the existing one
if not geometry:
existing_package_extent.delete()
log.debug('Deleted extent for package %s' % package_id)
else:
# Check if extent changed
if not compare_geometry_fields(package_extent.the_geom, existing_package_extent.the_geom):
# Update extent
existing_package_extent.the_geom = package_extent.the_geom
existing_package_extent.save()
log.debug('Updated extent for package %s' % package_id)
else:
log.debug('Extent for package %s unchanged' % package_id)
elif geometry:
# Insert extent
Session.add(package_extent)
log.debug('Created new extent for package %s' % package_id)
def test_different_points(self):
extent1 = self._get_extent_object(self.geojson_examples['point'])
extent2 = self._get_extent_object(self.geojson_examples['point_2'])
assert not compare_geometry_fields(extent1.the_geom, extent2.the_geom)
def test_different_points(self):
extent1 = self._get_extent_object(self.geojson_examples["point"])
extent2 = self._get_extent_object(self.geojson_examples["point_2"])
assert not compare_geometry_fields(extent1.the_geom, extent2.the_geom)
def test_same_points(self):
extent1 = self._get_extent_object(self.geojson_examples['point'])
extent2 = self._get_extent_object(self.geojson_examples['point'])
assert compare_geometry_fields(extent1.the_geom, extent2.the_geom)
def test_same_points(self):
extent1 = self._get_extent_object(self.geojson_examples["point"])
extent2 = self._get_extent_object(self.geojson_examples["point"])
assert compare_geometry_fields(extent1.the_geom, extent2.the_geom)
