gistfile1.py

#!/usr/bin/env python
#
# Copyright 2010 Map Of Life
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

from mapreduce import operation as op
from google.appengine.ext import db
from Tiles import Tiles, TmpTile

def delete(entity):
 """Deletes the entity from the datastore."""
 yield op.db.Delete(entity)

def build_tiles(entity):
   """Converts a TmpTile entity into a Tile entity.

    Basically we convert the TmpTile.keyLiteral property into a new Tile key and
    convert the TmpTile.band property into the Tile.blob property.

    Args:
        entity: A TmpTile entity
    """
   tile = Tiles(key_name=entity.keyLiteral)
   tile.band = db.Blob(entity.keyLiteral)
   yield op.db.Put(tile)
   yield op.db.Delete(entity)