Mercurial > dive4elements > river

annotate flys-backend/contrib/shpimporter/importer.py @ 4881:9b03cf6b85c9

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(importer) calculate freeboard and expect sql
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 25 Jan 2013 15:37:43 +0100
parents 82d00b0c7302
children b457532dae63
rev   line source
4872
a563e9f58f93 Improve error handling and unify dbconn for all importers
Andre Heinecke <aheinecke@intevation.de>
parents: 4871
diff changeset
1 try:
a563e9f58f93 Improve error handling and unify dbconn for all importers
Andre Heinecke <aheinecke@intevation.de>
parents: 4871
diff changeset
2 from osgeo import ogr
a563e9f58f93 Improve error handling and unify dbconn for all importers
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parents: 4871
diff changeset
3 except ImportErrror:
a563e9f58f93 Improve error handling and unify dbconn for all importers
Andre Heinecke <aheinecke@intevation.de>
parents: 4871
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4 import ogr
a563e9f58f93 Improve error handling and unify dbconn for all importers
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5 import osr
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8654e4480fc6 Shape importer: added command line option dry_run to supress database transactions.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 3654
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6 import shpimporter
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852d4c508f33 (importer) Try to convert paths to UTF-8 for DB insertion
Andre Heinecke <aheinecke@intevation.de>
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7 import utils
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8
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9 class Importer:
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10
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11 def __init__(self, config, dbconn):
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59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
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parents: 2862
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12 self.config = config
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a563e9f58f93 Improve error handling and unify dbconn for all importers
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13 self.dbconn = dbconn
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59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
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parents: 2862
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14 self.river_id = config.river_id
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parents: 2853
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15 self.dest_srs = osr.SpatialReference()
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59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
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parents: 2862
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16 self.dest_srs.ImportFromEPSG(config.target_srs)
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17
bd9e76e0b55d Improved the python shapefile importer.
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18 def getKind(self, path):
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19 raise NotImplementedError("Importer.getKind is abstract!")
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20
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21 def getPath(self, base):
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22 raise NotImplementedError("Importer.getPath is abstract!")
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23
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24 def getTablename(self):
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25 raise NotImplementedError("Importer.getTablename is abstract!")
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26
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27 def getName(self):
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28 raise NotImplementedError("Importer.getTablename is abstract!")
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29
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30 def IsFieldSet(self, feat, name):
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82d00b0c7302 (importer) Avoid uneccessary error and improve debug output
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31 if feat.GetFieldIndex(name) == -1:
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32 return False # Avoids an Error in IsFieldSet
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33 return feat.IsFieldSet(feat.GetFieldIndex(name))
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34
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35 def IsDoubleFieldSet(self, feat, name):
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36 try:
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37 isset = feat.GetFieldAsDouble(name)
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38 return isset is not None
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39 except:
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40 return False
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41
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42 def isShapeRelevant(self, name, path):
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43 return True
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44
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45 def walkOverShapes(self, shape):
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46 (name, path) = shape
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47 if not self.isShapeRelevant(name, path):
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8654e4480fc6 Shape importer: added command line option dry_run to supress database transactions.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 3654
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48 shpimporter.INFO("Skip shapefile '%s'" % path)
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49 return
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50
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51 shp = ogr.Open(shape[1])
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52 if shp is None:
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parents: 3654
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53 shpimporter.ERROR("Shapefile '%s' could not be opened!" % path)
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54 return
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55
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parents: 3654
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56 shpimporter.INFO("Processing shapefile '%s'" % path)
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57 srcLayer = shp.GetLayerByName(name)
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58
bd9e76e0b55d Improved the python shapefile importer.
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59 if srcLayer is None:
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parents: 3654
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60 shpimporter.ERROR("Layer '%s' was not found!" % name)
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61 return
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62
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63 return self.shape2Database(srcLayer, name, path)
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64
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parents: 2853
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65 def transform(self, feat):
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66 geometry = feat.GetGeometryRef()
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parents: 2853
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67 src_srs = geometry.GetSpatialReference()
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68
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69 if src_srs is None:
3679
2cd2657b3d60 Fixed broken method call in geo importer.
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70 shpimporter.ERROR("No source SRS given! No transformation possible!")
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parents: 2853
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71 return feat
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72
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73 transformer = osr.CoordinateTransformation(src_srs, self.dest_srs)
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74 geometry.Transform(transformer)
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75
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76 return feat
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parents: 2853
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77
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78 def shape2Database(self, srcLayer, name, path):
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79 destLayer = self.dbconn.GetLayerByName(self.getTablename())
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80
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81 if srcLayer is None:
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parents: 3654
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82 shpimporter.ERROR("Shapefile is None!")
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83 return -1
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84
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85 if destLayer is None:
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parents: 3654
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86 shpimporter.ERROR("No destination layer given!")
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87 return -1
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88
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89 count = srcLayer.GetFeatureCount()
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90 shpimporter.DEBUG("Try to add %i features to database." % count)
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91
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92 srcLayer.ResetReading()
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93
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94 geomType = -1
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95 success = 0
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96 unsupported = 0
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97 creationFailed = 0
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98 featureDef = destLayer.GetLayerDefn()
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99
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100 for feat in srcLayer:
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101 geom = feat.GetGeometryRef()
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102
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103 if geom is None:
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82d00b0c7302 (importer) Avoid uneccessary error and improve debug output
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104 shpimporter.DEBUG("Unkown Geometry reference for feature")
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105 continue
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106
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107 geomType = geom.GetGeometryType()
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108
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109 if self.isGeometryValid(geomType):
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110 newFeat = self.createNewFeature(featureDef,
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111 feat,
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112 name=name,
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113 path=path)
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114
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115 if newFeat is not None:
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852d4c508f33 (importer) Try to convert paths to UTF-8 for DB insertion
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116 newFeat.SetField("path", utils.getUTF8Path(path))
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117 newFeat = self.transform(newFeat)
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118 res = destLayer.CreateFeature(newFeat)
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119 if res is None or res > 0:
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120 shpimporter.ERROR("Unable to insert feature. Error: %r" % res)
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121 else:
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122 success = success + 1
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123 else:
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124 creationFailed = creationFailed + 1
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125 else:
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126 unsupported = unsupported + 1
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127
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128 shpimporter.INFO("Inserted %i features" % success)
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129 shpimporter.INFO("Failed to create %i features" % creationFailed)
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130 shpimporter.INFO("Found %i unsupported features" % unsupported)
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131
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132 try:
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133 if self.config.dry_run > 0:
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134 return geomType
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135 destLayer.CommitTransaction()
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136 except e:
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137 shpimporter.ERROR("Exception while committing transaction.")
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138
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139 return geomType
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