def dereference(self, obj):
if not obj.has_key("ref"):
return
for ref in obj["ref"]:
filename = ref["filename"]
if not filename.startswith("/"):
filename = os.path.join(self.get_root(), filename)
try:
cls = PRODUCTS[ref["product"]]
except KeyError:
raise RuntimeError('Unknown product type "%s"' % ref["product"])
if ref.has_key("offset"):
product = cls(ref["filename"], self, offset=ref["offset"])
else:
product = cls(ref["filename"], self)
tile = product.tile(obj["layer"], obj["zoom"], obj["x"], obj["z"])
if obj.has_key("data"):
if obj["format"] == "png":
utils.array_update(obj["data"], tile["data"])
elif obj["format"] == "json" and obj["type"] == "geojson":
utils.geojson_update(obj["data"], tile["data"])
else:
obj["data"] = tile["data"]
if obj.has_key("raw_data"):
del obj["raw_data"]
del obj["ref"]
def save(self, obj, append=True):
"""Save object to profile.
Object is a dictionary with the following mandatory and optional fields:
layer layer name [required]
data numpy array (format: png) or dictionary (format: json)
ref list of references to product files
zoom zoom level
x x-coordinate (type: x or xz)
z z-coordinate (type: xz)
If append is True, object is merged with the original object.
Return the object augmented with layer fields.
"""
# Insert layer properties to obj.
layer = self.layer_for(obj)
o = layer.copy()
o.update(obj)
obj = o
if append:
orig_obj = self.load(obj, dereference=False)
if orig_obj is not None:
# Update data.
if orig_obj.has_key("data") and obj.has_key("data"):
orig_obj["data"]
if layer["format"] == "png":
utils.array_update(orig_obj["data"], obj["data"])
elif layer["format"] == "json" and layer["type"] == "geojson":
utils.geojson_update(orig_obj["data"], obj["data"])
elif obj.has_key("data"):
orig_obj["data"] = obj["data"]
# Update ref.
if orig_obj.has_key("ref") and obj.has_key("ref"):
utils.ref_update(orig_obj["ref"], obj["ref"])
elif obj.has_key("ref"):
orig_obj["ref"] = obj["ref"]
obj = orig_obj
del obj["raw_data"]
# self.cache.store(obj)
self.storage.store(obj)
if obj.has_key("zoom") and obj.has_key("x"):
self.update_availability(obj["layer"], obj["zoom"], (obj["x"], obj["x"] + 1))
return obj
