Mercurial > dive4elements > river
annotate flys-backend/contrib/shpimporter/importer.py @ 4690:7c59baa150bd
Use display name of the Collection in CollectionView
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Mon, 17 Dec 2012 16:11:48 +0100 |
parents | 82e931f88137 |
children | 890eaa0a5162 |
rev | line source |
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1 import ogr, osr |
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2 import shpimporter |
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3 |
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4 class Importer: |
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5 |
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6 def __init__(self, config): |
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7 self.config = config |
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8 self.dbconn = 'OCI:%s/%s@%s' % (config.user, config.password, config.host) |
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9 self.river_id = config.river_id |
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10 self.dest_srs = osr.SpatialReference() |
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11 self.dest_srs.ImportFromEPSG(config.target_srs) |
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12 |
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13 |
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14 def getKind(self, path): |
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15 raise NotImplementedError("Importer.getKind is abstract!") |
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16 |
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17 |
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18 def getPath(self, base): |
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19 raise NotImplementedError("Importer.getPath is abstract!") |
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20 |
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21 |
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22 def getTablename(self): |
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23 raise NotImplementedError("Importer.getTablename is abstract!") |
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24 |
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25 |
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26 def getName(self): |
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27 raise NotImplementedError("Importer.getTablename is abstract!") |
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28 |
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29 |
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30 def IsFieldSet(self, feat, name): |
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31 try: |
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32 isset = feat.GetField(name) |
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33 return isset is not None |
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34 except: |
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35 return False |
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36 |
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37 |
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38 def IsDoubleFieldSet(self, feat, name): |
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39 try: |
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40 isset = feat.GetFieldAsDouble(name) |
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41 return isset is not None |
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42 except: |
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43 return False |
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44 |
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45 |
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46 def isShapeRelevant(self, name, path): |
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47 return True |
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48 |
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49 |
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50 def walkOverShapes(self, shape): |
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51 (name, path) = shape |
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52 if not self.isShapeRelevant(name, path): |
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53 shpimporter.INFO("Skip shapefile '%s'" % path) |
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54 return |
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55 |
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56 shp = ogr.Open(shape[1]) |
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57 if shp is None: |
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58 shpimporter.ERROR("Shapefile '%s' could not be opened!" % path) |
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59 return |
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60 |
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61 shpimporter.INFO("Processing shapefile '%s'" % path) |
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62 srcLayer = shp.GetLayerByName(name) |
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63 |
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64 if srcLayer is None: |
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65 shpimporter.ERROR("Layer '%s' was not found!" % name) |
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66 return |
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67 |
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68 return self.shape2Database(srcLayer, name, path) |
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69 |
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70 |
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71 def transform(self, feat): |
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72 geometry = feat.GetGeometryRef() |
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73 src_srs = geometry.GetSpatialReference() |
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74 |
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75 if src_srs is None: |
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76 shpimporter.ERROR("No source SRS given! No transformation possible!") |
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77 return feat |
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78 |
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79 transformer = osr.CoordinateTransformation(src_srs, self.dest_srs) |
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80 geometry.Transform(transformer) |
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81 |
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82 return feat |
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83 |
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84 |
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85 def shape2Database(self, srcLayer, name, path): |
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86 table = ogr.Open(self.dbconn) |
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87 destLayer = table.GetLayerByName(self.getTablename()) |
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88 |
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89 if srcLayer is None: |
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90 shpimporter.ERROR("Shapefile is None!") |
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91 return -1 |
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92 |
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93 if destLayer is None: |
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94 shpimporter.ERROR("No destination layer given!") |
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95 return -1 |
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96 |
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97 count = srcLayer.GetFeatureCount() |
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98 shpimporter.DEBUG("Try to add %i features to database." % count) |
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99 |
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100 srcLayer.ResetReading() |
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101 |
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102 geomType = -1 |
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103 success = 0 |
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104 unsupported = 0 |
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105 creationFailed = 0 |
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106 featureDef = destLayer.GetLayerDefn() |
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107 |
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108 for feat in srcLayer: |
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109 geom = feat.GetGeometryRef() |
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110 |
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111 if geom is None: |
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112 continue |
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113 |
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114 geomType = geom.GetGeometryType() |
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115 |
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116 if self.isGeometryValid(geomType): |
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117 newFeat = self.createNewFeature(featureDef, |
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118 feat, |
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119 name=name, |
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120 path=path) |
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121 |
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122 if newFeat is not None: |
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123 newFeat.SetField("path", path) |
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124 newFeat = self.transform(newFeat) |
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125 res = destLayer.CreateFeature(newFeat) |
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126 if res is None or res > 0: |
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127 shpimporter.ERROR("Unable to insert feature: %r" % res) |
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128 else: |
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129 success = success + 1 |
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130 else: |
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131 creationFailed = creationFailed + 1 |
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132 else: |
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133 unsupported = unsupported + 1 |
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134 |
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135 shpimporter.INFO("Inserted %i features" % success) |
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136 shpimporter.INFO("Failed to create %i features" % creationFailed) |
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137 shpimporter.INFO("Found %i unsupported features" % unsupported) |
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138 |
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139 try: |
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140 if self.config.dry_run > 0: |
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141 return geomType |
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142 destLayer.CommitTransaction() |
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143 except e: |
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144 shpimporter.ERROR("Exception while committing transaction.") |
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145 |
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146 return geomType |
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147 |