Mercurial > dive4elements > river

annotate flys-backend/contrib/shpimporter/utils.py @ 5645:696d710470f5

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flys/issue1077: Show loads as step line, therefore transform data in SedimentLoadFacet to stretch as in the measurement stations bounds. Deal with this new kind of data in the Generator.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 10 Apr 2013 09:35:07 +0200
parents 3f35d9db48c1
children
rev   line source
2798
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
1 import os
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b1d7e600b43b (importer) Add utility function to convert paths to utf-8
Andre Heinecke <aheinecke@intevation.de>
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2 import sys
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769593a84606 Importer: Behold, Logging!
Andre Heinecke <aheinecke@intevation.de>
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3 import logging
769593a84606 Importer: Behold, Logging!
Andre Heinecke <aheinecke@intevation.de>
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4
4970
174fbaa3d344 Add handling of River Names and remove target_src parameter
Andre Heinecke <aheinecke@intevation.de>
parents: 4935
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5 try:
174fbaa3d344 Add handling of River Names and remove target_src parameter
Andre Heinecke <aheinecke@intevation.de>
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6 from osgeo import ogr
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c5187ab9f571 Fix Syntax Errror
Andre Heinecke <aheinecke@intevation.de>
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7 except ImportError:
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174fbaa3d344 Add handling of River Names and remove target_src parameter
Andre Heinecke <aheinecke@intevation.de>
parents: 4935
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8 import ogr
2798
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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9
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Andre Heinecke <aheinecke@intevation.de>
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10 logger = logging.getLogger("utils")
769593a84606 Importer: Behold, Logging!
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11
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5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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12 SHP='.shp'
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a6ee62a070b0 I'm learning how to use cursors \o/
Andre Heinecke <aheinecke@intevation.de>
parents: 4970
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13 SQL_SELECT_RIVER_ID="SELECT id FROM rivers WHERE name = %s"
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d6860fca89e4 Pull information about the backend into dgm.
Andre Heinecke <aheinecke@intevation.de>
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14 SQL_SELECT_RIVER_ID_ORA="SELECT id FROM rivers WHERE name = :s"
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5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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15
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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16 def findShapefiles(path):
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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17 shapes = []
5a654f2e35bc Added a python tool to import shapefiles into database.
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18
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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19 for root, dirs, files in os.walk(path):
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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20 if len(files) == 0:
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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21 continue
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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22
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23 logger.debug("Processing directory '%s' with %i files " % (root, len(files)))
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5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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24
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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25 for f in files:
5a654f2e35bc Added a python tool to import shapefiles into database.
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26 idx = f.find(SHP)
5a654f2e35bc Added a python tool to import shapefiles into database.
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27 if (idx+len(SHP)) == len(f):
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28 shapes.append((f.replace(SHP, ''), root + "/" + f))
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29
5a654f2e35bc Added a python tool to import shapefiles into database.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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30 return shapes
5a654f2e35bc Added a python tool to import shapefiles into database.
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31
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Andre Heinecke <aheinecke@intevation.de>
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32 def getRiverId(dbconn, name, oracle):
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33 """
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Andre Heinecke <aheinecke@intevation.de>
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34 Returns the id of the river "name"
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35 Dbconn must be a python database connection api compliant object
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36 """
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37 cur = dbconn.cursor()
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38 if oracle:
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39 # This is stupid and shoudl not be neccessary. But I don't
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40 # know how to make it work both ways. aheinecke - 02/2013
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41 stmt = SQL_SELECT_RIVER_ID_ORA
d6860fca89e4 Pull information about the backend into dgm.
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42 else:
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43 stmt = SQL_SELECT_RIVER_ID
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40dc001594e4 Allow unicode river names
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44 cur.execute(stmt, (getUTF8(name),))
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45 row = cur.fetchone()
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46 if row:
174fbaa3d344 Add handling of River Names and remove target_src parameter
Andre Heinecke <aheinecke@intevation.de>
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47 return row[0]
174fbaa3d344 Add handling of River Names and remove target_src parameter
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48 else:
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49 return 0
174fbaa3d344 Add handling of River Names and remove target_src parameter
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50
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51 def getUTF8(string):
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52 """
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53 Tries to convert the string to a UTF-8 encoding by first checking if it
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54 is UTF-8 and then trying cp1252
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55 """
c0a58558b817 Importer: - Handle regular expressions for attribute names
Andre Heinecke <aheinecke@intevation.de>
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56 try:
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57 return unicode.encode(unicode(string, "UTF-8"), "UTF-8")
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58 except UnicodeDecodeError:
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59 # Probably European Windows names so lets try again
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60 return unicode.encode(unicode(string, "cp1252"), "UTF-8")
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61
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62 def getUTF8Path(path):
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63 """
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64 Tries to convert path to utf-8 by first checking the filesystemencoding
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65 and trying the default windows encoding afterwards.
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66 Returns a valid UTF-8 encoded unicode object or throws a UnicodeDecodeError
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67 """
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68 try:
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69 return unicode.encode(unicode(path, sys.getfilesystemencoding()), "UTF-8")
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70 except UnicodeDecodeError:
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71 # Probably European Windows names so lets try again
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72 return unicode.encode(unicode(path, "cp1252"), "UTF-8")
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73
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74 WKB_MAP = {
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75 ogr.wkb25Bit : 'wkb25Bit',
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76 ogr.wkbGeometryCollection : 'wkbGeometryCollection',
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77 ogr.wkbGeometryCollection25D :'wkbGeometryCollection25D',
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78 ogr.wkbLineString : 'wkbLineString',
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79 ogr.wkbLineString25D : 'wkbLineString25D',
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80 ogr.wkbLinearRing : 'wkbLinearRing',
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81 ogr.wkbMultiLineString : 'wkbMultiLineString',
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82 ogr.wkbMultiLineString25D : 'wkbMultiLineString25D',
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83 ogr.wkbMultiPoint : 'wkbMultiPoint',
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84 ogr.wkbMultiPoint25D : 'wkbMultiPoint25D',
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85 ogr.wkbMultiPolygon : 'wkbMultiPolygon',
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86 ogr.wkbMultiPolygon25D : 'wkbMultiPolygon25D',
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87 ogr.wkbNDR : 'wkbNDR',
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88 ogr.wkbNone : 'wkbNone',
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89 ogr.wkbPoint : 'wkbPoint',
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90 ogr.wkbPoint25D : 'wkbPoint25D',
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91 ogr.wkbPolygon : 'wkbPolygon',
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92 ogr.wkbPolygon25D : 'wkbPolygon25D',
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93 ogr.wkbUnknown : 'wkbUnknown',
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94 ogr.wkbXDR : 'wkbXDR'
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95 }
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96
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97 def getWkbString(type):
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98 return WKB_MAP.get(type) or "Unknown"
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99
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04eb62eae722 River Axes and HWS_lines are now multiline
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100 def convertToMultiLine(feature):
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101 """
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102 Converts a feature to a multiline feature.
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Andre Heinecke <aheinecke@intevation.de>
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103 """
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Andre Heinecke <aheinecke@intevation.de>
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104 geometry = feature.GetGeometryRef()
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105 # SRS information is lost while forcing to multiline
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106 srs = geometry.GetSpatialReference()
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107 geometry = ogr.ForceToMultiLineString(geometry)
04eb62eae722 River Axes and HWS_lines are now multiline
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108 geometry.AssignSpatialReference(srs)
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109 feature.SetGeometry(geometry)
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Andre Heinecke <aheinecke@intevation.de>
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110 return feature
5294
3f35d9db48c1 Force UESG to multipolygon and import source field for messungen
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111
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112 def convertToMultiPolygon(feature):
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113 """
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114 Converts a feature to a multiline feature.
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115 """
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116 geometry = feature.GetGeometryRef()
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117 # SRS information is lost while forcing to multiline
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parents: 5219
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118 srs = geometry.GetSpatialReference()
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119 geometry = ogr.ForceToMultiPolygon(geometry)
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120 geometry.AssignSpatialReference(srs)
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121 feature.SetGeometry(geometry)
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122 return feature
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