def select (self, action):
param = {"VERSION" : self.version,
"SERVICE" : "WFS",
"REQUEST" : "GetFeature",
"TYPENAME" : self.typename}
if action.id is not None:
param["FEATUREID"] = str(action.id)
else:
if action.bbox:
param["BBOX"] = ",".join(map(str, action.bbox))
if action.attributes:
raise NotImplementedError("WFS attribute query")
if action.maxfeatures:
param["MAXFEATURES"] = str(action.maxfeatures)
url = self.url
if "?" not in url and "&" not in url: url += "?"
url += urllib.urlencode(param)
tmpfile, headers = urllib.urlretrieve(url)
import ogr
try:
ds = OGR("GML", dsn = tmpfile, writable = 0)
result = ds.select(action)
except ogr.OGRError, E:
raise Exception("OGR could not read the WFS result: %s. Data was: %s" % (E, open(tmpfile).read()))
def from_wkb (self, geom):
try:
ogrgeom = ogr.CreateGeometryFromWkb(geom)
return OGR.freeze_geometry(ogrgeom)
except:
return None
