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synchronize.py
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synchronize.py
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import osmium as o
from custom_schema import Building as building_sync
from custom_schema import River as river_sync
from custom_schema import Road as road_sync
from entity.building import Building
from entity.river import River
from entity.road import Road
from database import Database
import shapely.wkb as wkblib
import geojson
class FileStatsHandler(o.SimpleHandler):
def __init__(self):
super(FileStatsHandler, self).__init__()
self.deleted = []
self.added = []
self.modified = []
def node(self, n):
self.decision(n, 'node')
def way(self, w):
self.decision(w, 'way')
def relation(self, r):
self.decision(r, 'relation')
def decision(self, feature, type):
if feature.deleted:
self.deleted.append(self.handle_type(type, feature))
elif feature.version == 1:
self.added.append(self.handle_type(type, feature))
else:
self.modified.append(self.handle_type(type, feature))
def handle_type(self, type, feature):
if type == 'node':
return [type, feature.changeset, feature.id,
[feature.location.lat, feature.location.lon], self.simplify_tags(feature.tags), feature.timestamp,
feature.uid, feature.user, feature.version]
if type == 'way':
return [type, feature.changeset, feature.id,
self.simplify_nodes(feature.nodes), self.simplify_tags(feature.tags), feature.timestamp,
feature.uid, feature.user, feature.version]
if type == 'relation':
return [type, feature.changeset, feature.id,
self.simplify_members(feature.members), self.simplify_tags(feature.tags), feature.timestamp,
feature.uid, feature.user, feature.version]
def simplify_tags(self, tags):
data = []
for i in tags:
data.append((i.k, i.v))
return data
def simplify_nodes(self, nodes):
data = []
for i in nodes:
data.append(i.ref)
return data
def simplify_members(self, members):
data = []
for i in members:
data.append(i.ref)
return data
class Processor:
@staticmethod
def makeEntity(id, geom, tags, type):
dictionary = dict(tags)
if type == 'building':
building = Building()
building.id = id
building.geom = geom
building.name = dictionary['name'] if 'name' in dictionary else None
building.house_num = dictionary['addr:housenumber'] if 'addr:housenumber' in dictionary else None
building.usage = dictionary['building:use'] if 'building:use' in dictionary else None
building.levels = dictionary['building:levels'] if 'building:levels' in dictionary else None
building.street = dictionary['addr:street'] if 'addr:street' in dictionary else None
building.type = dictionary['building'] if 'building' in dictionary else None
return building
elif type == 'river':
river = River()
river.id = id
river.geom = geom
river.name = dictionary['name'] if 'name' in dictionary else None
river.width = dictionary['width'] if 'width' in dictionary else None
return river
elif type == 'road':
road = Road()
road.id = id
road.geom = geom
road.name = dictionary['name'] if 'name' in dictionary else None
road._road_type = dictionary['highway'] if 'highway' in dictionary else None
road.access = dictionary['access'] if 'access' in dictionary else None
road.oneway = dictionary['oneway'] if 'oneway' in dictionary else None
return road
@staticmethod
def delete(db, type, feature):
data = db.select(feature, type)
tags = []
if len(data) != 0:
for d in data:
id = d[0]
geom = d[3]
tags.append((d[1], d[2]))
entity = Processor.makeEntity(id, geom, tags, type)
if type == 'building':
return building_sync.delete(entity)
if type == 'road':
return road_sync.delete(entity)
if type == 'river':
return river_sync.delete(entity)
@staticmethod
def add(db, type, feature):
data = db.select(feature, type)
tags = []
if len(data) != 0:
for d in data:
id = d[0]
geom = d[3]
tags.append((d[1], d[2]))
entity = Processor.makeEntity(id, geom, tags, type)
if type == 'building':
return building_sync.add(entity)
if type == 'road':
return road_sync.add(entity)
if type == 'river':
return river_sync.add(entity)
@staticmethod
def edit(db, type, feature):
data = db.select(feature, type)
tags = []
if len(data) != 0:
for d in data:
id = d[0]
geom = d[3]
tags.append((d[1], d[2]))
entity = Processor.makeEntity(id, geom, tags, type)
if type == 'building':
return building_sync.edit(entity)
if type == 'road':
return road_sync.edit(entity)
if type == 'river':
return river_sync.edit(entity)
def make_geojson(entity):
g1 = wkblib.loads(entity.geom, hex=True)
g2 = geojson.Feature(geometry=g1, properties={})
return g2
def syncronize(file):
h = FileStatsHandler()
h.apply_file(file, locations=True)
b_deleted = []
b_added = []
b_edited = []
road_deleted = []
road_added = []
road_edited = []
river_deleted = []
river_added = []
river_edited = []
db = Database()
for feature in h.deleted:
if feature[0] == 'way':
for item in feature[4]:
if item[0] == 'building':
entity = Processor.delete(db, 'building', feature)
if entity is not None:
entity = make_geojson(entity)
b_deleted.append(entity)
elif item[0] == 'highway' and item[1] == 'road':
entity = Processor.delete(db, 'road', feature)
if entity is not None:
entity = make_geojson(entity)
road_deleted.append(entity)
elif item[0] == 'waterway' and item[1] == 'river':
entity = Processor.delete(db, 'river', feature)
if entity is not None:
entity = make_geojson(entity)
river_deleted.append(entity)
for feature in h.added:
if feature[0] == 'way':
for item in feature[4]:
if item[0] == 'building':
entity = Processor.add(db, 'building', feature)
if entity is not None:
entity = make_geojson(entity)
b_added.append(entity)
elif item[0] == 'highway' and item[1] == 'road':
entity = Processor.add(db, 'road', feature)
if entity is not None:
entity = make_geojson(entity)
road_added.append(entity)
elif item[0] == 'waterway' and item[1] == 'river':
entity = Processor.add(db, 'river', feature)
if entity is not None:
entity = make_geojson(entity)
river_added.append(entity)
for feature in h.modified:
if feature[0] == 'way':
for item in feature[4]:
if item[0] == 'building':
entity = Processor.edit(db, 'building', feature)
if entity is not None:
entity = make_geojson(entity)
b_edited.append(entity)
elif item[0] == 'highway' and item[1] == 'road':
entity = Processor.edit(db, 'road', feature)
if entity is not None:
entity = make_geojson(entity)
road_edited.append(entity)
elif item[0] == 'waterway' and item[1] == 'river':
entity = Processor.edit(db, 'river', feature)
if entity is not None:
entity = make_geojson(entity)
river_edited.append(entity)
data = {"b_deleted": b_deleted, "road_deleted": road_deleted, "river_deleted": river_deleted, "b_added": b_added,
"road_added": road_added, "river_added": river_added,
"b_edited": b_edited, "road_edited": road_edited, "river_edited": river_edited}
return data