|
1
|
|
|
# ~*~ coding: utf-8 ~*~ |
|
2
|
|
|
#- |
|
3
|
|
|
# OSMAlchemy - OpenStreetMap to SQLAlchemy bridge |
|
4
|
|
|
# Copyright (c) 2016 Dominik George <[email protected]> |
|
5
|
|
|
# |
|
6
|
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy |
|
7
|
|
|
# of this software and associated documentation files (the "Software"), to deal |
|
8
|
|
|
# in the Software without restriction, including without limitation the rights |
|
9
|
|
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
|
10
|
|
|
# copies of the Software, and to permit persons to whom the Software is |
|
11
|
|
|
# furnished to do so, subject to the following conditions: |
|
12
|
|
|
# |
|
13
|
|
|
# The above copyright notice and this permission notice shall be included in all |
|
14
|
|
|
# copies or substantial portions of the Software. |
|
15
|
|
|
# |
|
16
|
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
17
|
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
18
|
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
|
19
|
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|
20
|
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
|
21
|
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
|
22
|
|
|
# SOFTWARE. |
|
23
|
|
|
# |
|
24
|
|
|
# Alternatively, you are free to use OSMAlchemy under Simplified BSD, The |
|
25
|
|
|
# MirOS Licence, GPL-2+, LGPL-2.1+, AGPL-3+ or the same terms as Python |
|
26
|
|
|
# itself. |
|
27
|
|
|
|
|
28
|
1 |
|
""" Utility code for the OSMAlchemy database OSMAlchemy. """ |
|
29
|
|
|
|
|
30
|
1 |
|
import operator |
|
|
|
|
|
|
31
|
1 |
|
import xml.dom.minidom as minidom |
|
32
|
1 |
|
import dateutil.parser |
|
33
|
1 |
|
from sqlalchemy.sql.elements import BinaryExpression, BooleanClauseList, BindParameter |
|
|
|
|
|
|
34
|
1 |
|
from sqlalchemy.sql.annotation import AnnotatedColumn |
|
|
|
|
|
|
35
|
|
|
|
|
36
|
1 |
|
def _import_osm_dom(oa, dom, session=None): |
|
|
|
|
|
|
37
|
|
|
""" Import a DOM tree from OSM XML into an OSMAlchemy model. |
|
38
|
|
|
|
|
39
|
|
|
Not called directly; used by _import_osm_xml and _import_osm_file. |
|
40
|
|
|
""" |
|
41
|
|
|
|
|
42
|
1 |
|
# Get session |
|
43
|
1 |
|
if session is None: |
|
44
|
1 |
|
session = oa.session |
|
45
|
1 |
|
|
|
46
|
1 |
|
oa.logger.debug("Started import of data from DOM.") |
|
47
|
1 |
|
|
|
48
|
1 |
|
def _dom_attrs_to_any(xml_element, osm_element): |
|
49
|
1 |
|
if "version" in xml_element.attributes.keys(): |
|
50
|
1 |
|
osm_element.version = int(xml_element.attributes["version"].value) |
|
51
|
1 |
|
if "changeset" in xml_element.attributes.keys(): |
|
52
|
1 |
|
osm_element.changeset = int(xml_element.attributes["changeset"].value) |
|
53
|
1 |
|
if "user" in xml_element.attributes.keys(): |
|
54
|
1 |
|
osm_element.user = xml_element.attributes["user"].value |
|
55
|
|
|
if "uid" in xml_element.attributes.keys(): |
|
56
|
1 |
|
osm_element.uid = int(xml_element.attributes["uid"].value) |
|
57
|
|
|
if "visible" in xml_element.attributes.keys(): |
|
58
|
1 |
|
osm_element.visible = True if xml_element.attributes["visible"].value == "true" else False |
|
|
|
|
|
|
59
|
|
|
if "timestamp" in xml_element.attributes.keys(): |
|
60
|
|
|
osm_element.timestamp = dateutil.parser.parse(xml_element.attributes["timestamp"].value) |
|
61
|
|
|
|
|
62
|
1 |
|
def _dom_tags_to_any(xml_element, osm_element): |
|
63
|
|
|
# Remove all tags previously associated with element |
|
64
|
1 |
|
for key in list(osm_element.tags.keys()): |
|
65
|
|
|
del osm_element.tags[key] |
|
66
|
1 |
|
|
|
67
|
1 |
|
# Iterate over all <tag /> nodes in the DOM element |
|
68
|
|
|
for xml_tag in xml_element.getElementsByTagName("tag"): |
|
69
|
1 |
|
# Append data to tags |
|
70
|
|
|
osm_element.tags[xml_tag.attributes["k"].value] = xml_tag.attributes["v"].value |
|
71
|
|
|
|
|
72
|
1 |
|
def _dom_to_node(xml_element): |
|
73
|
1 |
|
with oa.session.no_autoflush: |
|
74
|
1 |
|
# Get mandatory node id |
|
75
|
|
|
id_ = int(xml_element.attributes["id"].value) |
|
76
|
|
|
oa.logger.debug("Importing OSM node with id %i." % id_) |
|
77
|
1 |
|
|
|
78
|
1 |
|
# Find object in database and create if non-existent |
|
79
|
|
|
node = oa.session.query(oa.node).filter_by(id=id_).scalar() |
|
80
|
|
|
if node is None: |
|
81
|
1 |
|
node = oa.node(id=id_) |
|
82
|
1 |
|
|
|
83
|
|
|
# Store mandatory latitude and longitude |
|
84
|
|
|
node.latitude = xml_element.attributes["lat"].value |
|
85
|
1 |
|
node.longitude = xml_element.attributes["lon"].value |
|
86
|
1 |
|
|
|
87
|
|
|
# Store other attributes and tags |
|
88
|
1 |
|
_dom_attrs_to_any(xml_element, node) |
|
89
|
1 |
|
_dom_tags_to_any(xml_element, node) |
|
90
|
|
|
|
|
91
|
1 |
|
# Add to session |
|
92
|
|
|
oa.session.add(node) |
|
93
|
|
|
oa.session.commit() |
|
94
|
1 |
|
|
|
95
|
1 |
|
def _dom_to_way(xml_element): |
|
96
|
1 |
|
with oa.session.no_autoflush: |
|
97
|
|
|
# Get mandatory way id |
|
98
|
|
|
id_ = int(xml_element.attributes["id"].value) |
|
99
|
1 |
|
oa.logger.debug("Importing OSM way with id %i." % id_) |
|
100
|
|
|
|
|
101
|
1 |
|
# Find object in database and create if non-existent |
|
102
|
1 |
|
way = oa.session.query(oa.way).filter_by(id=id_).scalar() |
|
103
|
|
|
if way is None: |
|
104
|
1 |
|
way = oa.way(id=id_) |
|
105
|
|
|
|
|
106
|
|
|
# Find all related nodes |
|
107
|
1 |
|
for node in xml_element.getElementsByTagName("nd"): |
|
108
|
1 |
|
# Get node id and find object |
|
109
|
|
|
ref = int(node.attributes["ref"].value) |
|
110
|
|
|
new_node = oa.session.query(oa.node).filter_by(id=ref).one() |
|
111
|
1 |
|
# Append to nodes in way |
|
112
|
1 |
|
way.nodes.append(new_node) |
|
113
|
|
|
|
|
114
|
1 |
|
# Store other attributes and tags |
|
115
|
1 |
|
_dom_attrs_to_any(xml_element, way) |
|
116
|
|
|
_dom_tags_to_any(xml_element, way) |
|
117
|
1 |
|
|
|
118
|
|
|
# Add to session |
|
119
|
|
|
oa.session.add(way) |
|
120
|
1 |
|
oa.session.commit() |
|
121
|
1 |
|
|
|
122
|
1 |
|
def _dom_to_relation(xml_element): |
|
123
|
|
|
with oa.session.no_autoflush: |
|
124
|
|
|
# Get mandatory way id |
|
125
|
1 |
|
id_ = int(xml_element.attributes["id"].value) |
|
126
|
|
|
oa.logger.debug("Importing OSM relation with id %i." % id_) |
|
127
|
1 |
|
|
|
128
|
1 |
|
# Find object in database and create if non-existent |
|
129
|
|
|
relation = oa.session.query(oa.relation).filter_by(id=id_).scalar() |
|
130
|
1 |
|
if relation is None: |
|
131
|
1 |
|
relation = oa.relation(id=id_) |
|
132
|
|
|
|
|
133
|
|
|
# Find all members |
|
134
|
1 |
|
for member in xml_element.getElementsByTagName("member"): |
|
135
|
1 |
|
# Get member attributes |
|
136
|
|
|
ref = int(member.attributes["ref"].value) |
|
137
|
1 |
|
type_ = member.attributes["type"].value |
|
138
|
1 |
|
|
|
139
|
1 |
|
if "role" in member.attributes.keys(): |
|
140
|
1 |
|
role = member.attributes["role"].value |
|
141
|
1 |
|
else: |
|
142
|
1 |
|
role = "" |
|
143
|
|
|
element = oa.session.query(oa.element).filter_by(id=ref, type=type_).scalar() |
|
144
|
1 |
|
if element is None: |
|
145
|
1 |
|
# We do not know the member yet, create a stub |
|
146
|
|
|
if type == "node": |
|
147
|
1 |
|
element = oa.node(id=ref) |
|
148
|
|
|
elif type == "way": |
|
149
|
|
|
element = oa.way(id=ref) |
|
150
|
1 |
|
elif type == "relation": |
|
151
|
1 |
|
element = oa.relation(id=ref) |
|
152
|
|
|
# We need to commit here because element could be repeated |
|
153
|
|
|
oa.session.add(element) |
|
154
|
1 |
|
oa.session.commit() |
|
155
|
1 |
|
# Append to members |
|
156
|
|
|
relation.members.append((element, role)) |
|
157
|
|
|
|
|
158
|
1 |
|
# Store other attributes and tags |
|
159
|
|
|
_dom_attrs_to_any(xml_element, relation) |
|
160
|
|
|
_dom_tags_to_any(xml_element, relation) |
|
161
|
1 |
|
|
|
162
|
|
|
# Add to session |
|
163
|
1 |
|
oa.session.add(relation) |
|
164
|
1 |
|
oa.session.commit() |
|
165
|
1 |
|
|
|
166
|
1 |
|
# Get root element |
|
167
|
1 |
|
osm = dom.documentElement |
|
168
|
1 |
|
|
|
169
|
|
|
# Iterate over children to find nodes, ways and relations |
|
170
|
|
|
for xml_element in osm.childNodes: |
|
171
|
1 |
|
# Determine element type |
|
172
|
|
|
if xml_element.nodeName == "node": |
|
173
|
1 |
|
_dom_to_node(xml_element) |
|
174
|
|
|
elif xml_element.nodeName == "way": |
|
175
|
|
|
_dom_to_way(xml_element) |
|
176
|
|
|
elif xml_element.nodeName == "relation": |
|
177
|
|
|
_dom_to_relation(xml_element) |
|
178
|
|
|
|
|
179
|
|
|
# Rmove children |
|
180
|
|
|
xml_element.unlink() |
|
181
|
|
|
|
|
182
|
|
|
def _import_osm_xml(oa, xml, session=None): |
|
|
|
|
|
|
183
|
|
|
""" Import a string in OSM XML format into an OSMAlchemy model. |
|
184
|
|
|
|
|
185
|
|
|
oa - reference to the OSMAlchemy model instance |
|
186
|
1 |
|
xml - string containing the XML data |
|
187
|
|
|
""" |
|
188
|
|
|
|
|
189
|
|
|
# Get session |
|
190
|
|
|
if session is None: |
|
191
|
|
|
session = oa.session |
|
192
|
|
|
|
|
193
|
|
|
# Parse string into DOM structure |
|
194
|
|
|
dom = minidom.parseString(xml) |
|
195
|
1 |
|
|
|
196
|
|
|
return _import_osm_dom(oa, dom, session=session) |
|
197
|
1 |
|
|
|
198
|
|
|
def _import_osm_file(oa, file, session=None): |
|
|
|
|
|
|
199
|
|
|
""" Import a file in OSM XML format into an OSMAlchemy model. |
|
200
|
|
|
|
|
201
|
|
|
oa - reference to the OSMAlchemy model instance |
|
202
|
|
|
path - path to the file to import or open file object |
|
203
|
|
|
""" |
|
204
|
|
|
|
|
205
|
|
|
# Get session |
|
206
|
|
|
if session is None: |
|
207
|
|
|
session = oa.session |
|
208
|
|
|
|
|
209
|
|
|
# Parse document into DOM structure |
|
210
|
|
|
dom = minidom.parse(file) |
|
211
|
|
|
|
|
212
|
|
|
return _import_osm_dom(oa, dom, session=session) |
|
213
|
|
|
|
Natureshadow /
OSMAlchemy
Loading history...
