_dom_to_relation() - Code Metrics - Inspection of "Fix access to tags dictionary." - Natureshadow/OSMAlchemy - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 882e36...94d274 )

by Dominik

created 2016-09-01 20:14 UTC

_dom_to_relation() F

↳ Parent: _import_osm_dom()

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	26
CRAP Score	9.0041

Importance

Changes	3
Bugs	0	Features	0

Metric	Value
cc	9
c	3
b	0
f	0
dl	0
loc	42
ccs	26
cts	27
cp	0.963
crap	9.0041
rs	3

# ~*~ coding: utf-8 ~*~
#-
# OSMAlchemy - OpenStreetMap to SQLAlchemy bridge
# Copyright (c) 2016 Dominik George <[email protected]>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# Alternatively, you are free to use OSMAlchemy under Simplified BSD, The
# MirOS Licence, GPL-2+, LGPL-2.1+, AGPL-3+ or the same terms as Python
# itself.

""" Utility code for the OSMAlchemy database OSMAlchemy. """

import dateutil.parser
import operator

import xml.dom.minidom as minidom

from sqlalchemy.sql.elements import BinaryExpression, BooleanClauseList, BindParameter

from sqlalchemy.sql.annotation import AnnotatedColumn


def _import_osm_dom(osma, session, dom):
    """ Import a DOM tree from OSM XML into an OSMAlchemy model.

    Not called directly; used by _import_osm_xml and _import_osm_file.
    """

    def _dom_attrs_to_any(e, element):

        if "version" in e.attributes.keys():
            element.version = int(e.attributes["version"].value)
        if "changeset" in e.attributes.keys():
            element.changeset = int(e.attributes["changeset"].value)
        if "user" in e.attributes.keys():
            element.user = e.attributes["user"].value
        if "uid" in e.attributes.keys():
            element.uid = int(e.attributes["uid"].value)
        if "visible" in e.attributes.keys():
            element.visible = True if e.attributes["visible"].value == "true" else False
        if "timestamp" in e.attributes.keys():
            element.timestamp = dateutil.parser.parse(e.attributes["timestamp"].value)

    def _dom_tags_to_any(e, element):

        # Remove all tags previously associated with element
        for k in list(element.tags.keys()):
            del element.tags[k]

        # Iterate over all <tag /> nodes in the DOM element
        for t in e.getElementsByTagName("tag"):

            # Append data to tags
            element.tags[t.attributes["k"].value] = t.attributes["v"].value

    def _dom_to_node(e):

        with session.no_autoflush:
            # Get mandatory node id
            id = int(e.attributes["id"].value)


            # Find object in database and create if non-existent
            node = session.query(osma.node).filter_by(id=id).scalar()
            if node is None:
                node = osma.node(id=id)

            # Store mandatory latitude and longitude
            node.latitude = e.attributes["lat"].value
            node.longitude = e.attributes["lon"].value

            # Store other attributes and tags
            _dom_attrs_to_any(e, node)
            _dom_tags_to_any(e, node)

        # Add to session
        session.add(node)
        session.commit()

    def _dom_to_way(e):

        with session.no_autoflush:
            # Get mandatory way id
            id = int(e.attributes["id"].value)


            # Find object in database and create if non-existent
            way = session.query(osma.way).filter_by(id=id).scalar()
            if way is None:
                way = osma.way(id=id)

            # Find all related nodes
            for n in e.getElementsByTagName("nd"):

                # Get node id and find object
                ref = int(n.attributes["ref"].value)
                node = session.query(osma.node).filter_by(id=ref).one()
                # Append to nodes in way
                way.nodes.append(node)

            # Store other attributes and tags
            _dom_attrs_to_any(e, way)
            _dom_tags_to_any(e, way)

        # Add to session
        session.add(way)
        session.commit()

    def _dom_to_relation(e):

        with session.no_autoflush:
            # Get mandatory way id
            id = int(e.attributes["id"].value)


            # Find object in database and create if non-existent
            relation = session.query(osma.relation).filter_by(id=id).scalar()
            if relation is None:
                relation = osma.relation(id=id)

            # Find all members
            for m in e.getElementsByTagName("member"):

                # Get member attributes
                ref = int(m.attributes["ref"].value)
                type = m.attributes["type"].value


                if "role" in m.attributes.keys():
                    role = m.attributes["role"].value
                else:
                    role = ""
                element = session.query(osma.element).filter_by(id=ref, type=type).scalar()
                if element is None:
                    # We do not know the member yet, create a stub
                    if type == "node":
                        element = osma.node(id=ref)
                    elif type == "way":
                        element = osma.way(id=ref)
                    elif type == "relation":
                        element = osma.relation(id=ref)
                    # We need to commit here because element could be repeated
                    session.add(element)
                    session.commit()
                # Append to members
                relation.members.append((element, role))

            # Store other attributes and tags
            _dom_attrs_to_any(e, relation)
            _dom_tags_to_any(e, relation)

        # Add to session
        session.add(relation)
        session.commit()

    # Get root element
    osm = dom.documentElement

    # Iterate over children to find nodes, ways and relations
    for e in osm.childNodes:

        # Determine element type
        if e.nodeName == "node":
            _dom_to_node(e)
        elif e.nodeName == "way":
            _dom_to_way(e)
        elif e.nodeName == "relation":
            _dom_to_relation(e)

        # Rmove children
        e.unlink()

def _import_osm_xml(osma, session, xml):
    """ Import a string in OSM XML format into an OSMAlchemy model.

      osma - reference to the OSMAlchemy model instance
      session - an SQLAlchemy session
      xml - string containing the XML data
    """

    # Parse string into DOM structure
    dom = minidom.parseString(xml)

    return _import_osm_dom(osma, session, dom)

def _import_osm_file(osma, session, file):
    """ Import a file in OSM XML format into an OSMAlchemy model.

      osma - reference to the OSMAlchemy model instance
      session - an SQLAlchemy session
      path - path to the file to import or open file object
    """

    # Parse document into DOM structure
    dom = minidom.parse(file)

    return _import_osm_dom(osma, session, dom)


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 dateutil.parser
31	1	import operator
		0 ignored issues – show introduced 2016-08-09 13:47 UTC by Report Bug Copy Issue Report standard import "import operator" comes before "import dateutil.parser" Loading history... Unused Code introduced 2016-08-10 19:56 UTC by Report Bug Copy Issue Report The import `operator` seems to be unused. Loading history...
32	1	import xml.dom.minidom as minidom
		0 ignored issues – show introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report standard import "import xml.dom.minidom as minidom" comes before "import dateutil.parser" Loading history...
33	1	from sqlalchemy.sql.elements import BinaryExpression, BooleanClauseList, BindParameter
		0 ignored issues – show Unused Code introduced 2016-08-10 19:56 UTC by Report Bug Copy Issue Report Unused BinaryExpression imported from sqlalchemy.sql.elements Loading history... Unused Code introduced 2016-08-10 19:56 UTC by Report Bug Copy Issue Report Unused BooleanClauseList imported from sqlalchemy.sql.elements Loading history... Unused Code introduced 2016-08-10 19:56 UTC by Report Bug Copy Issue Report Unused BindParameter imported from sqlalchemy.sql.elements Loading history...
34	1	from sqlalchemy.sql.annotation import AnnotatedColumn
		0 ignored issues – show Bug introduced 2016-08-09 13:47 UTC by Report Bug Copy Issue Report The name `AnnotatedColumn` does not seem to exist in module `sqlalchemy.sql.annotation`. Loading history... Unused Code introduced 2016-08-10 19:56 UTC by Report Bug Copy Issue Report Unused AnnotatedColumn imported from sqlalchemy.sql.annotation Loading history...
35
36	1	def _import_osm_dom(osma, session, dom):
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	def _dom_attrs_to_any(e, element):
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `e` does not conform to the argument naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
43	1	if "version" in e.attributes.keys():
44	1	element.version = int(e.attributes["version"].value)
45	1	if "changeset" in e.attributes.keys():
46	1	element.changeset = int(e.attributes["changeset"].value)
47	1	if "user" in e.attributes.keys():
48	1	element.user = e.attributes["user"].value
49	1	if "uid" in e.attributes.keys():
50	1	element.uid = int(e.attributes["uid"].value)
51	1	if "visible" in e.attributes.keys():
52	1	element.visible = True if e.attributes["visible"].value == "true" else False
53	1	if "timestamp" in e.attributes.keys():
54	1	element.timestamp = dateutil.parser.parse(e.attributes["timestamp"].value)
55
56	1	def _dom_tags_to_any(e, element):
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `e` does not conform to the argument naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
57		# Remove all tags previously associated with element
58	1	for k in list(element.tags.keys()):
59		del element.tags[k]
60
61		# Iterate over all <tag /> nodes in the DOM element
62	1	for t in e.getElementsByTagName("tag"):
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `t` does not conform to the variable naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
63		# Append data to tags
64	1	element.tags[t.attributes["k"].value] = t.attributes["v"].value
65
66	1	def _dom_to_node(e):
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `e` does not conform to the argument naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
67	1	with session.no_autoflush:
68		# Get mandatory node id
69	1	id = int(e.attributes["id"].value)
		0 ignored issues – show Bug Best Practice introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report This seems to re-define the built-in `id`. It is generally discouraged to redefine built-ins as this makes code very hard to read. Loading history... Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `id` does not conform to the variable naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
70
71		# Find object in database and create if non-existent
72	1	node = session.query(osma.node).filter_by(id=id).scalar()
73	1	if node is None:
74	1	node = osma.node(id=id)
75
76		# Store mandatory latitude and longitude
77	1	node.latitude = e.attributes["lat"].value
78	1	node.longitude = e.attributes["lon"].value
79
80		# Store other attributes and tags
81	1	_dom_attrs_to_any(e, node)
82	1	_dom_tags_to_any(e, node)
83
84		# Add to session
85	1	session.add(node)
86	1	session.commit()
87
88	1	def _dom_to_way(e):
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `e` does not conform to the argument naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
89	1	with session.no_autoflush:
90		# Get mandatory way id
91	1	id = int(e.attributes["id"].value)
		0 ignored issues – show Bug Best Practice introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report This seems to re-define the built-in `id`. It is generally discouraged to redefine built-ins as this makes code very hard to read. Loading history... Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `id` does not conform to the variable naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
92
93		# Find object in database and create if non-existent
94	1	way = session.query(osma.way).filter_by(id=id).scalar()
95	1	if way is None:
96	1	way = osma.way(id=id)
97
98		# Find all related nodes
99	1	for n in e.getElementsByTagName("nd"):
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `n` does not conform to the variable naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
100		# Get node id and find object
101	1	ref = int(n.attributes["ref"].value)
102	1	node = session.query(osma.node).filter_by(id=ref).one()
103		# Append to nodes in way
104	1	way.nodes.append(node)
105
106		# Store other attributes and tags
107	1	_dom_attrs_to_any(e, way)
108	1	_dom_tags_to_any(e, way)
109
110		# Add to session
111	1	session.add(way)
112	1	session.commit()
113
114	1	def _dom_to_relation(e):
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `e` does not conform to the argument naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
115	1	with session.no_autoflush:
116		# Get mandatory way id
117	1	id = int(e.attributes["id"].value)
		0 ignored issues – show Bug Best Practice introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report This seems to re-define the built-in `id`. It is generally discouraged to redefine built-ins as this makes code very hard to read. Loading history... Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `id` does not conform to the variable naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
118
119		# Find object in database and create if non-existent
120	1	relation = session.query(osma.relation).filter_by(id=id).scalar()
121	1	if relation is None:
122	1	relation = osma.relation(id=id)
123
124		# Find all members
125	1	for m in e.getElementsByTagName("member"):
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `m` does not conform to the variable naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
126		# Get member attributes
127	1	ref = int(m.attributes["ref"].value)
128	1	type = m.attributes["type"].value
		0 ignored issues – show Bug Best Practice introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report This seems to re-define the built-in `type`. It is generally discouraged to redefine built-ins as this makes code very hard to read. Loading history...
129
130	1	if "role" in m.attributes.keys():
131	1	role = m.attributes["role"].value
132		else:
133		role = ""
134	1	element = session.query(osma.element).filter_by(id=ref, type=type).scalar()
135	1	if element is None:
136		# We do not know the member yet, create a stub
137	1	if type == "node":
138	1	element = osma.node(id=ref)
139	1	elif type == "way":
140	1	element = osma.way(id=ref)
141	1	elif type == "relation":
142	1	element = osma.relation(id=ref)
143		# We need to commit here because element could be repeated
144	1	session.add(element)
145	1	session.commit()
146		# Append to members
147	1	relation.members.append((element, role))
148
149		# Store other attributes and tags
150	1	_dom_attrs_to_any(e, relation)
151	1	_dom_tags_to_any(e, relation)
152
153		# Add to session
154	1	session.add(relation)
155	1	session.commit()
156
157		# Get root element
158	1	osm = dom.documentElement
159
160		# Iterate over children to find nodes, ways and relations
161	1	for e in osm.childNodes:
		0 ignored issues – show Coding Style Naming introduced 2016-08-06 10:50 UTC by Report Bug Copy Issue Report The name `e` does not conform to the variable naming conventions (`[a-z_][a-z0-9_]{2,30}$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
162		# Determine element type
163	1	if e.nodeName == "node":
164	1	_dom_to_node(e)
165	1	elif e.nodeName == "way":
166	1	_dom_to_way(e)
167	1	elif e.nodeName == "relation":
168	1	_dom_to_relation(e)
169
170		# Rmove children
171	1	e.unlink()
172
173	1	def _import_osm_xml(osma, session, xml):
174		""" Import a string in OSM XML format into an OSMAlchemy model.
175
176		osma - reference to the OSMAlchemy model instance
177		session - an SQLAlchemy session
178		xml - string containing the XML data
179		"""
180
181		# Parse string into DOM structure
182		dom = minidom.parseString(xml)
183
184		return _import_osm_dom(osma, session, dom)
185
186	1	def _import_osm_file(osma, session, file):
187		""" Import a file in OSM XML format into an OSMAlchemy model.
188
189		osma - reference to the OSMAlchemy model instance
190		session - an SQLAlchemy session
191		path - path to the file to import or open file object
192		"""
193
194		# Parse document into DOM structure
195	1	dom = minidom.parse(file)
196
197		return _import_osm_dom(osma, session, dom)
198

Natureshadow / OSMAlchemy

Push — master ( 882e36...94d274 )

_dom_to_relation() F

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