def layer_export(map_name):
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
abort(404)
from dataexport import export_csv_iter
return Response(headers={
'Cache-Control' : 'max-age=86400, public',
'Content-Disposition' : 'inline; filename="%s.csv"' % urllib.quote(map_name)
}, response=export_csv_iter(defn_obj), status=200, content_type='text/csv')
def layer_export(map_name):
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
abort(404)
from dataexport import export_csv_iter
return Response(
headers={
'Cache-Control': 'max-age=86400, public',
'Content-Disposition': 'inline; filename="%s.csv"' % urllib.quote(map_name)
}, response=export_csv_iter(defn_obj), status=200, content_type='text/csv')
def layer_export_bounds(map_name, ne, sw):
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
abort(404)
ne = map(float, ne.split(','))
sw = map(float, sw.split(','))
if len(ne) != 2 or len(sw) != 2:
abort(404)
from dataexport import export_csv_iter
return Response(headers={
'Cache-Control': 'max-age=86400, public',
'Content-Disposition': 'inline; filename="%s_%f_%f_%f_%f.csv"' % (urllib.quote(map_name), ne[0], ne[1], sw[0], sw[1])
}, response=export_csv_iter(defn_obj, (ne, sw)), status=200, content_type='text/csv')
def layer_legend(map_name, layer_id, client_rev):
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
abort(404)
defn = defn_obj.get()
rev = defn.get('rev', 0)
if not defn.has_key('layers'):
abort(404)
layer_defn = defn['layers'].get(layer_id, None)
if layer_defn is None:
abort(404)
scale = colour_for_layer(layer_defn)
return Response(headers={'Cache-Control' : 'max-age=86400, public'}, response=scale.legend(), status=200, content_type='image/png')
def api_map(map_name):
eal = EAlGIS()
defn = MapDefinition.get_by_name(map_name)
if request.method == 'POST':
if (defn is not None) and (not is_administrator(defn)):
abort(403)
try:
if 'json' not in request.form:
abort(400)
if defn is None:
defn = MapDefinition(name=map_name)
eal.db.session.add(defn)
eal.db.session.commit()
try:
rev = defn.set(json.loads(request.form['json']))
eal.db.session.commit()
except ValueError:
abort(400)
return jsonify(status="OK", updated=defn.get(), rev=rev)
except CompilationError as e:
return jsonify(status="ERROR", title="Expression compilation failed", mesg=e.message)
except NoMatches as e:
return jsonify(status="ERROR", title="Attribute could not be resolved", mesg=e.message)
except TooManyMatches as e:
return jsonify(status="ERROR", title="Attribube reference is ambiguous", mesg=e.message)
elif request.method == 'DELETE':
if defn is None:
abort(404)
if not is_administrator(defn):
abort(403)
eal.db.session.delete(defn)
eal.db.session.commit()
return jsonify(status="OK")
else:
if defn is None:
abort(404)
return jsonify(defn=defn.get(), administrator=is_administrator(defn))
def layer_legend(map_name, layer_id, client_rev):
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
abort(404)
defn = defn_obj.get()
if 'layers' not in defn:
abort(404)
layer_defn = defn['layers'].get(layer_id, None)
if layer_defn is None:
abort(404)
scale = colour_for_layer(layer_defn)
return Response(headers={'Cache-Control': 'max-age=86400, public'},
response=scale.legend(),
status=200,
content_type='image/png')
def get_or_create(self, map_name, layer_id):
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
return None
defn = defn_obj.get()
rev = defn.get('rev', 0)
if not defn.has_key('layers'):
return None
layer_defn = defn['layers'].get(layer_id, None)
if layer_defn is None:
return None
key = (defn_obj.id, layer_id)
wrapper = self.instances.get(key, None)
if wrapper is not None and wrapper.rev != rev:
wrapper = None
del self.instances[key]
if wrapper is None:
wrapper = Map(rev, layer_defn)
self.instances[key] = wrapper
return wrapper
def get_or_create(self, map_name, layer_id):
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
return None
defn = defn_obj.get()
rev = defn.get('rev', 0)
if 'layers' not in defn:
return None
layer_defn = defn['layers'].get(layer_id, None)
if layer_defn is None:
return None
key = (defn_obj.id, layer_id)
wrapper = self.instances.get(key, None)
if wrapper is not None and wrapper.rev != rev:
wrapper = None
del self.instances[key]
if wrapper is None:
wrapper = Map(rev, layer_defn)
self.instances[key] = wrapper
return wrapper
def api_map(map_name):
eal = EAlGIS()
defn = MapDefinition.get_by_name(map_name)
if request.method == 'POST':
if (defn is not None) and (not is_administrator(defn)):
abort(403)
try:
if 'json' not in request.form:
abort(400)
if defn is None:
defn = MapDefinition(name=map_name)
eal.db.session.add(defn)
eal.db.session.commit()
try:
rev = defn.set(json.loads(request.form['json']))
eal.db.session.commit()
except ValueError:
abort(400)
return jsonify(status="OK", updated=defn.get(), rev=rev)
except CompilationError as e:
return jsonify(status="ERROR",
title="Expression compilation failed",
mesg=e.message)
except NoMatches as e:
return jsonify(status="ERROR",
title="Attribute could not be resolved",
mesg=e.message)
except TooManyMatches as e:
return jsonify(status="ERROR",
title="Attribube reference is ambiguous",
mesg=e.message)
elif request.method == 'DELETE':
if defn is None:
abort(404)
if not is_administrator(defn):
abort(403)
eal.db.session.delete(defn)
eal.db.session.commit()
return jsonify(status="OK")
else:
if defn is None:
abort(404)
return jsonify(defn=defn.get(), administrator=is_administrator(defn))
row.append(None)
new_vals.append((gid, val))
vals = new_vals
if len([t for t in row if t is not None]) == 0:
break
yield row
def export_csv_iter(*args, **kwargs):
s = StringIO()
w = csv.writer(s)
for row in export_iter(*args, **kwargs):
w.writerow(row)
s.flush()
yield s.getvalue()
s.truncate(0)
if __name__ == "__main__":
map_name = sys.argv[1]
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
sys.exit(1)
import csv
w = csv.writer(sys.stdout)
for row in export_iter(
defn_obj, [(-31.91534106639876, 115.91443324565473), (-31.921000867731685, 115.90771699428872)]
):
w.writerow(row)
new_vals.append(next_or_none(iterator))
else:
row.append(None)
new_vals.append((gid, val))
vals = new_vals
if len([t for t in row if t is not None]) == 0:
break
yield row
def export_csv_iter(*args, **kwargs):
s = StringIO()
w = csv.writer(s)
for row in export_iter(*args, **kwargs):
w.writerow(row)
s.flush()
yield s.getvalue()
s.truncate(0)
if __name__ == '__main__':
map_name = sys.argv[1]
defn_obj = MapDefinition.get_by_name(map_name)
if defn_obj is None:
sys.exit(1)
w = csv.writer(sys.stdout)
for row in export_iter(defn_obj,
[(-31.91534106639876, 115.91443324565473),
(-31.921000867731685, 115.90771699428872)]):
w.writerow(row)
def api_mapexists(map_name):
defn_obj = MapDefinition.get_by_name(map_name)
res = {
'exists': defn_obj is not None
}
return jsonify(res)
