def from_geojson_feature(cls, task_id, task_feature):
"""
Constructs and validates a task from a GeoJson feature object
:param task_id: Unique ID for the task
:param task_feature: A geoJSON feature object
:raises InvalidGeoJson, InvalidData
"""
if type(task_feature) is not geojson.Feature:
raise InvalidGeoJson('Task: Invalid GeoJson should be a feature')
task_geometry = task_feature.geometry
if type(task_geometry) is not geojson.MultiPolygon:
raise InvalidGeoJson('Task: Geometry must be a MultiPolygon')
is_valid_geojson = geojson.is_valid(task_geometry)
if is_valid_geojson['valid'] == 'no':
raise InvalidGeoJson(
f"Task: Invalid MultiPolygon - {is_valid_geojson['message']}")
task = cls()
try:
task.x = task_feature.properties['x']
task.y = task_feature.properties['y']
task.zoom = task_feature.properties['zoom']
task.splittable = task_feature.properties['splittable']
except KeyError as e:
raise InvalidData(f'Task: Expected property not found: {str(e)}')
task.id = task_id
task_geojson = geojson.dumps(task_geometry)
task.geometry = ST_SetSRID(ST_GeomFromGeoJSON(task_geojson), 4326)
return task
def set_project_aoi(self, draft_project_dto: DraftProjectDTO):
""" Sets the AOI for the supplied project """
aoi_geojson = geojson.loads(json.dumps(draft_project_dto.area_of_interest))
aoi_geometry = GridService.merge_to_multi_polygon(aoi_geojson, dissolve=True)
valid_geojson = geojson.dumps(aoi_geometry)
self.geometry = ST_SetSRID(ST_GeomFromGeoJSON(valid_geojson), 4326)
self.centroid = ST_Centroid(self.geometry)
def __init__(self, aoi_geometry_geojson):
"""
AOI Constructor
:param aoi_geometry_geojson: AOI GeoJson
:raises InvalidGeoJson
"""
aoi_geojson = geojson.loads(json.dumps(aoi_geometry_geojson))
aoi_geometry = GridService.merge_to_multi_polygon(aoi_geojson, dissolve=True)
valid_geojson = geojson.dumps(aoi_geometry)
self.geometry = ST_SetSRID(ST_GeomFromGeoJSON(valid_geojson), 4326)
self.centroid = ST_Centroid(self.geometry)