Mercurial > dive4elements > river

annotate flys-backend/contrib/shpimporter/importer.py @ 5004:f1c01fecf194 dami

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Fix imports of ogr, this removes a warning in gdal 1.9 but keeps compatibility with older versions
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 15 Feb 2013 16:18:34 +0100
parents fed74592a2ba
children 769593a84606
rev   line source
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a563e9f58f93 Improve error handling and unify dbconn for all importers
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parents: 4871
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1 try:
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parents: 5001
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2 from osgeo import ogr, osr
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3 except ImportErrror:
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4 import ogr, osr
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5 import utils
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6 import re
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7
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8 class Importer:
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9
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10 def __init__(self, river_id, dbconn, dry_run):
174fbaa3d344 Add handling of River Names and remove target_src parameter
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11 self.river_id = river_id
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12 self.dbconn = dbconn
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13 self.dry_run = dry_run
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14 self.dest_srs = osr.SpatialReference()
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15 self.dest_srs.ImportFromEPSG(31467)
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16 self.handled_fields = []
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17 self.tracking_import = False
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18 self.srcLayer = None
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19
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20 def getKind(self, path):
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21 raise NotImplementedError("Importer.getKind is abstract!")
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22
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23 def getPath(self, base):
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24 raise NotImplementedError("Importer.getPath is abstract!")
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25
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26 def getTablename(self):
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27 raise NotImplementedError("Importer.getTablename is abstract!")
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28
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29 def getName(self):
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30 raise NotImplementedError("Importer.getTablename is abstract!")
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31
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32 def IsFieldSet(self, feat, name):
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33 if not name:
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34 return False
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35 if feat.GetFieldIndex(name) == -1:
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36 return False # Avoids an Error in IsFieldSet
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37 return feat.IsFieldSet(feat.GetFieldIndex(name))
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38
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39 def searchField(self, regex):
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40 """
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41 Searches for a field in the current src layer that matches
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42 the expression regex.
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43 Throws an exception if more then one field matches
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44 @param feat: The feature to search for attributes
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45 @param regex: The regex to look for
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46
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47 @returns: The field name as a string
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48 """
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49
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50 if not hasattr(self.srcLayer, "fieldnames"):
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51 self.srcLayer.fieldnames = []
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52 for i in range(0, self.srcLayer.GetLayerDefn().GetFieldCount()):
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53 self.srcLayer.fieldnames.append(
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54 self.srcLayer.GetLayerDefn().GetFieldDefn(i).GetNameRef())
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55
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56 result = None
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57 for name in self.srcLayer.fieldnames:
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58 match = re.match(regex, name, re.IGNORECASE)
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59 if match:
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60 if result:
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61 raise Exception("More then one field matches: %s" % regex)
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62 else:
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63 result = match.group(0)
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64 return result
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65
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66 def IsDoubleFieldSet(self, feat, name):
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67 try:
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68 isset = feat.GetFieldAsDouble(name)
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69 return isset is not None
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70 except:
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71 return False
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72
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73 def isShapeRelevant(self, name, path):
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74 return True
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75
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76 def walkOverShapes(self, shape):
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77 (name, path) = shape
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78
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79 shp = ogr.Open(shape[1])
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80 if shp is None:
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81 shpimporter.ERROR("Shapefile '%s' could not be opened!" % path)
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82 return
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83
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84 if not self.isShapeRelevant(name, path):
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85 shpimporter.INFO("Skip shapefile: '%s' of Type: %s" % (path,
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86 utils.getWkbString(shp.GetLayerByName(name).GetGeomType())))
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87 return
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88
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89
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90 shpimporter.INFO("Processing shapefile '%s'" % path)
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91 srcLayer = shp.GetLayerByName(name)
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92
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93 if srcLayer is None:
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94 shpimporter.ERROR("Layer '%s' was not found!" % name)
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95 return
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96
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97 return self.shape2Database(srcLayer, name, path)
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98
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99 def transform(self, feat):
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100 geometry = feat.GetGeometryRef()
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101 src_srs = geometry.GetSpatialReference()
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102
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103 if src_srs is None:
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104 shpimporter.ERROR("No source SRS given! No transformation possible!")
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105 return feat
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106
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107 transformer = osr.CoordinateTransformation(src_srs, self.dest_srs)
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108 if geometry.Transform(transformer):
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109 return None
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110
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111 return feat
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112
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113 def handled(self, field):
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114 """
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115 Register a field or a map of as handled during the import.
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116
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117 There is a warning printed after the import for each unhandled field!
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118 """
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119 if not field in self.handled_fields:
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120 self.handled_fields.append(field)
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121
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122 def copyFields(self, src, target, mapping):
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123 """
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124 Checks the mapping dictonary for key value pairs to
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125 copy from the source to the destination feature.
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126 The keys can be reguar expressions that are matched
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127 agains the source fieldnames
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128
b457532dae63 Importer: Move copy fields into importer class and track imported/unimported fields
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
129 The Key is the attribute of the source feature to be copied
b457532dae63 Importer: Move copy fields into importer class and track imported/unimported fields
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diff changeset
130 into the target attribute named by the dict's value.
b457532dae63 Importer: Move copy fields into importer class and track imported/unimported fields
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diff changeset
131 """
4885
89a8764cabcc Importer: Only show imported fields if copy_fields is used
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
132 self.tracking_import = True
4884
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diff changeset
133 for key, value in mapping.items():
4935
c0a58558b817 Importer: - Handle regular expressions for attribute names
Andre Heinecke <aheinecke@intevation.de>
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134 realname = self.searchField(key)
c0a58558b817 Importer: - Handle regular expressions for attribute names
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diff changeset
135 if realname == None:
4884
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
136 continue
4935
c0a58558b817 Importer: - Handle regular expressions for attribute names
Andre Heinecke <aheinecke@intevation.de>
parents: 4886
diff changeset
137 if not realname in self.handled_fields:
c0a58558b817 Importer: - Handle regular expressions for attribute names
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diff changeset
138 self.handled_fields.append(realname)
4884
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diff changeset
139 # 0 OFTInteger, Simple 32bit integer
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diff changeset
140 # 1 OFTIntegerList, List of 32bit integers
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parents: 4878
diff changeset
141 # 2 OFTReal, Double Precision floating point
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diff changeset
142 # 3 OFTRealList, List of doubles
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diff changeset
143 # 4 OFTString, String of ASCII chars
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diff changeset
144 # 5 OFTStringList, Array of strings
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diff changeset
145 # 6 OFTWideString, deprecated
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diff changeset
146 # 7 OFTWideStringList, deprecated
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parents: 4878
diff changeset
147 # 8 OFTBinary, Raw Binary data
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diff changeset
148 # 9 OFTDate, Date
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diff changeset
149 # 10 OFTTime, Time
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diff changeset
150 # 11 OFTDateTime, Date and Time
4935
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diff changeset
151 if src.IsFieldSet(src.GetFieldIndex(realname)):
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152 if src.GetFieldType(realname) == 2:
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diff changeset
153 target.SetField(value, src.GetFieldAsDouble(realname))
4884
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154 else:
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diff changeset
155 target.SetField(value, utils.getUTF8(src.GetField(realname)))
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156
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157 def shape2Database(self, srcLayer, name, path):
4872
a563e9f58f93 Improve error handling and unify dbconn for all importers
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158 destLayer = self.dbconn.GetLayerByName(self.getTablename())
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159
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160 if srcLayer is None:
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161 shpimporter.ERROR("Shapefile is None!")
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162 return -1
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163
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164 if destLayer is None:
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165 shpimporter.ERROR("No destination layer given!")
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166 return -1
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167
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168 count = srcLayer.GetFeatureCount()
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169 shpimporter.DEBUG("Try to add %i features to database." % count)
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170
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171 srcLayer.ResetReading()
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172 self.srcLayer = srcLayer
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173
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174 geomType = -1
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175 success = 0
4995
998b29c8d2fd Improve debug output for unsupported features and skipped shapefiles
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176 unsupported = {}
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177 creationFailed = 0
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178 featureDef = destLayer.GetLayerDefn()
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179
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180 for feat in srcLayer:
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181 geom = feat.GetGeometryRef()
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182
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diff changeset
183 if geom is None:
4878
82d00b0c7302 (importer) Avoid uneccessary error and improve debug output
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184 shpimporter.DEBUG("Unkown Geometry reference for feature")
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diff changeset
185 continue
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diff changeset
186
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187 geomType = geom.GetGeometryType()
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188
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189 if self.isGeometryValid(geomType):
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190 newFeat = self.createNewFeature(featureDef,
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191 feat,
4951
23a090b41543 Importer: Check lowercase pathname and handle utf-8 conversion
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diff changeset
192 name=utils.getUTF8(name),
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193 path=path)
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diff changeset
194
bd9e76e0b55d Improved the python shapefile importer.
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diff changeset
195 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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diff changeset
196 newFeat.SetField("path", utils.getUTF8Path(path))
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diff changeset
197 newFeat = self.transform(newFeat)
4974
a92241d40228 Handle transformation errors
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diff changeset
198 if newFeat:
a92241d40228 Handle transformation errors
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
199 res = destLayer.CreateFeature(newFeat)
a92241d40228 Handle transformation errors
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
200 if res is None or res > 0:
a92241d40228 Handle transformation errors
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diff changeset
201 shpimporter.ERROR("Unable to insert feature. Error: %r" % res)
a92241d40228 Handle transformation errors
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
202 else:
a92241d40228 Handle transformation errors
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diff changeset
203 success = success + 1
2853
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diff changeset
204 else:
4974
a92241d40228 Handle transformation errors
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diff changeset
205 shpimporter.ERROR("Could not transform feature: %s " % feat.GetFID())
a92241d40228 Handle transformation errors
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
206 creationFailed += 1
2861
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diff changeset
207 else:
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diff changeset
208 creationFailed = creationFailed + 1
2853
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diff changeset
209 else:
4995
998b29c8d2fd Improve debug output for unsupported features and skipped shapefiles
Andre Heinecke <aheinecke@intevation.de>
parents: 4974
diff changeset
210 unsupported[utils.getWkbString(geomType)] = \
998b29c8d2fd Improve debug output for unsupported features and skipped shapefiles
Andre Heinecke <aheinecke@intevation.de>
parents: 4974
diff changeset
211 unsupported.get(utils.getWkbString(geomType), 0) + 1
2853
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212
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diff changeset
213 shpimporter.INFO("Inserted %i features" % success)
8654e4480fc6 Shape importer: added command line option dry_run to supress database transactions.
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parents: 3654
diff changeset
214 shpimporter.INFO("Failed to create %i features" % creationFailed)
5001
fed74592a2ba Fix syntax error
Andre Heinecke <aheinecke@intevation.de>
parents: 4995
diff changeset
215 for key, value in unsupported.items():
4995
998b29c8d2fd Improve debug output for unsupported features and skipped shapefiles
Andre Heinecke <aheinecke@intevation.de>
parents: 4974
diff changeset
216 shpimporter.INFO("Found %i unsupported features of type: %s" % (value, key))
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parents:
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217
4886
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Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
218 if self.tracking_import:
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Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
219 unhandled = []
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Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
220 for i in range(0, srcLayer.GetLayerDefn().GetFieldCount()):
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Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
221 act_field = srcLayer.GetLayerDefn().GetFieldDefn(i).GetNameRef()
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parents: 4885
diff changeset
222 if not act_field in self.handled_fields:
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parents: 4885
diff changeset
223 unhandled.append(act_field)
4884
b457532dae63 Importer: Move copy fields into importer class and track imported/unimported fields
Andre Heinecke <aheinecke@intevation.de>
parents: 4878
diff changeset
224
4886
8e99d2d9364d Importer: When not tracking dont print info about unimported fields
Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
225 if len(unhandled):
8e99d2d9364d Importer: When not tracking dont print info about unimported fields
Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
226 shpimporter.INFO("Did not import values from fields: %s " % \
8e99d2d9364d Importer: When not tracking dont print info about unimported fields
Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
227 " ".join(unhandled))
4884
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Andre Heinecke <aheinecke@intevation.de>
parents: 4878
diff changeset
228
2853
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
229 try:
4970
174fbaa3d344 Add handling of River Names and remove target_src parameter
Andre Heinecke <aheinecke@intevation.de>
parents: 4951
diff changeset
230 if self.dry_run:
3655
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 3654
diff changeset
231 return geomType
2853
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
232 destLayer.CommitTransaction()
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
233 except e:
3655
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 3654
diff changeset
234 shpimporter.ERROR("Exception while committing transaction.")
2853
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parents:
diff changeset
235
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
236 return geomType
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