def generate_cache_clusters(class_, layer, grid_size):
log = logging.getLogger(__name__)
log.debug("Generating cache for grid size: %s", grid_size)
cache_record = class_.CacheRecord(grid_size)
layer.cache_records.append(cache_record)
DBSession.flush()
clusters = GriddedAndBoundMappablePoint.get_points_as_wkt(layer, grid_size=grid_size)\
.filter(
MappablePoint.layer_id == layer.id
)
i = 0
for cluster in clusters:
i += 1
centroid = cluster.centroid
cluster_size = cluster.cluster_size
# locations = cluster.locations
cached_mappable_cluster = class_.CachedMappablePointCluster(cluster_size, centroid) #, locations)
cache_record.cached_mappable_point_clusters.append(cached_mappable_cluster)
if (i % 10000 == 0):
log.debug("Up to cluster: %i", i)
DBSession.flush()
def test_get_layer_points_as_wkt(self):
test_layer_1 = DBSession.query(Layer).filter_by(name='TestLayer1').one()
q = GriddedAndBoundMappablePoint.get_points_as_wkt(test_layer_1, grid_size=1)
result = q.all()
