Mercurial > dive4elements > river

annotate flys-backend/contrib/shpimporter/importer.py @ 5200:42bb6ff78d1b 2.9.11

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Directly set the connectionInitSqls on the datasource Somehow the factory fails to set the connectionInitSqls if we add it to the dbcpProperties. So we now set it directly
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 08 Mar 2013 11:48:33 +0100
parents b3a15fa3d88e
children 90f1c5f67698
rev   line source
4872
a563e9f58f93 Improve error handling and unify dbconn for all importers
Andre Heinecke <aheinecke@intevation.de>
parents: 4871
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1 try:
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f1c01fecf194 Fix imports of ogr, this removes a warning in gdal 1.9 but keeps
Andre Heinecke <aheinecke@intevation.de>
parents: 5001
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2 from osgeo import ogr, osr
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c5187ab9f571 Fix Syntax Errror
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3 except ImportError:
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f1c01fecf194 Fix imports of ogr, this removes a warning in gdal 1.9 but keeps
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parents: 5001
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4 import ogr, osr
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852d4c508f33 (importer) Try to convert paths to UTF-8 for DB insertion
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5 import utils
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6 import re
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7 import logging
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8
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9 logger = logging.getLogger("importer")
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10
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11 class Importer:
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12
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174fbaa3d344 Add handling of River Names and remove target_src parameter
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13 def __init__(self, river_id, dbconn, dry_run):
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14 self.river_id = river_id
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parents: 4871
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15 self.dbconn = dbconn
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174fbaa3d344 Add handling of River Names and remove target_src parameter
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16 self.dry_run = dry_run
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parents: 2853
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17 self.dest_srs = osr.SpatialReference()
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18 self.dest_srs.ImportFromEPSG(31467)
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19 self.handled_fields = []
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89a8764cabcc Importer: Only show imported fields if copy_fields is used
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20 self.tracking_import = False
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21 self.srcLayer = None
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22
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23 def getKind(self, path):
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24 raise NotImplementedError("Importer.getKind is abstract!")
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25
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26 def getPath(self, base):
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27 raise NotImplementedError("Importer.getPath is abstract!")
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28
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29 def getTablename(self):
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30 raise NotImplementedError("Importer.getTablename is abstract!")
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31
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32 def getName(self):
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33 raise NotImplementedError("Importer.getName is abstract!")
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34
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35 def isGeometryValid(self, geomType):
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36 raise NotImplementedError("Importer.isGeometryValid is abstract!")
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37
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38 def createNewFeature(self, featureDef, feat, **args):
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39 raise NotImplementedError("Importer.createNewFeature is abstract!")
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40
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41 def IsFieldSet(self, feat, name):
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42 if not name:
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43 return False
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44 if feat.GetFieldIndex(name) == -1:
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45 return False # Avoids an Error in IsFieldSet
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46 return feat.IsFieldSet(feat.GetFieldIndex(name))
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47
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48 def searchField(self, regex):
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49 """
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50 Searches for a field in the current src layer that matches
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51 the expression regex.
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52 Throws an exception if more than one field matches
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53 @param feat: The feature to search for attributes
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54 @param regex: The regex to look for
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55
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56 @returns: The field name as a string
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57 """
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58
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59 if not hasattr(self.srcLayer, "fieldnames"):
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60 self.srcLayer.fieldnames = []
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61 for i in range(0, self.srcLayer.GetLayerDefn().GetFieldCount()):
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62 self.srcLayer.fieldnames.append(
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63 self.srcLayer.GetLayerDefn().GetFieldDefn(i).GetNameRef())
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64
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65 result = None
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66 for name in self.srcLayer.fieldnames:
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67 match = re.match(regex, name, re.IGNORECASE)
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68 if match:
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69 if result:
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70 raise Exception("More than one field matches: %s" % regex)
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71 else:
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72 result = match.group(0)
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73 return result
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74
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75 def IsDoubleFieldSet(self, feat, name):
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76 try:
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77 isset = feat.GetFieldAsDouble(name)
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78 return isset is not None
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79 except:
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80 return False
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81
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82 def isShapeRelevant(self, name, path):
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83 return True
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84
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85 def walkOverShapes(self, shape):
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86 (name, path) = shape
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87
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88 shp = ogr.Open(shape[1])
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89 if shp is None:
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90 logger.error("Shapefile '%s' could not be opened!" % path)
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91 return
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92
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93 if not self.isShapeRelevant(name, path):
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94 logger.info("Skip shapefile: '%s' of Type: %s" % (path,
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95 utils.getWkbString(shp.GetLayerByName(name).GetGeomType())))
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96 return
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97
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98
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99 logger.info("Processing shapefile '%s'" % path)
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100 srcLayer = shp.GetLayerByName(name)
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101
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102 if srcLayer is None:
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103 logger.error("Layer '%s' was not found!" % name)
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104 return
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105
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106 return self.shape2Database(srcLayer, name, path)
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107
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108 def transform(self, feat):
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109 geometry = feat.GetGeometryRef()
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110 src_srs = geometry.GetSpatialReference()
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111
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112 if src_srs is None:
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113 logger.error("No source SRS given! No transformation possible!")
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114 return feat
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115
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116 transformer = osr.CoordinateTransformation(src_srs, self.dest_srs)
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117 if geometry.Transform(transformer):
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118 return None
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119
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120 return feat
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121
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122 def handled(self, field):
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123 """
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124 Register a field or a map of as handled during the import.
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125
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126 There is a warning printed after the import for each unhandled field!
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127 """
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128 if not field in self.handled_fields:
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129 self.handled_fields.append(field)
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130
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131 def copyFields(self, src, target, mapping):
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132 """
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133 Checks the mapping dictonary for key value pairs to
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134 copy from the source to the destination feature.
4935
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135 The keys can be reguar expressions that are matched
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136 agains the source fieldnames
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137
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diff changeset
138 The Key is the attribute of the source feature to be copied
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139 into the target attribute named by the dict's value.
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140 """
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141 self.tracking_import = True
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142 for key, value in mapping.items():
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143 realname = self.searchField(key)
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144 if realname == None:
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145 continue
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146 if not realname in self.handled_fields:
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147 self.handled_fields.append(realname)
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148 # 0 OFTInteger, Simple 32bit integer
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149 # 1 OFTIntegerList, List of 32bit integers
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150 # 2 OFTReal, Double Precision floating point
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151 # 3 OFTRealList, List of doubles
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152 # 4 OFTString, String of ASCII chars
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153 # 5 OFTStringList, Array of strings
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154 # 6 OFTWideString, deprecated
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155 # 7 OFTWideStringList, deprecated
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156 # 8 OFTBinary, Raw Binary data
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157 # 9 OFTDate, Date
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158 # 10 OFTTime, Time
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159 # 11 OFTDateTime, Date and Time
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160 if src.IsFieldSet(src.GetFieldIndex(realname)):
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161 if src.GetFieldType(realname) == 2:
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diff changeset
162 target.SetField(value, src.GetFieldAsDouble(realname))
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163 else:
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164 target.SetField(value, utils.getUTF8(src.GetField(realname)))
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165
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166 def shape2Database(self, srcLayer, name, path):
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167 destLayer = self.dbconn.GetLayerByName(self.getTablename())
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168
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169 if srcLayer is None:
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170 logger.error("Shapefile is None!")
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171 return -1
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172
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173 if destLayer is None:
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174 logger.error("No destination layer given!")
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175 return -1
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176
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177 count = srcLayer.GetFeatureCount()
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178 logger.debug("Try to add %i features to database." % count)
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179
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180 srcLayer.ResetReading()
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181 self.srcLayer = srcLayer
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182
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183 geomType = -1
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184 success = 0
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185 unsupported = {}
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186 creationFailed = 0
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187 featureDef = destLayer.GetLayerDefn()
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188
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189 for feat in srcLayer:
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190 geom = feat.GetGeometryRef()
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191
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192 if geom is None:
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193 logger.debug("Unkown Geometry reference for feature")
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194 continue
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195
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196 geomType = geom.GetGeometryType()
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197
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198 if self.isGeometryValid(geomType):
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199 newFeat = self.createNewFeature(featureDef,
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200 feat,
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201 name=utils.getUTF8(name),
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202 path=path)
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203
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204 if newFeat is not None:
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205 newFeat.SetField("path", utils.getUTF8Path(path))
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206 newFeat = self.transform(newFeat)
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207 if newFeat:
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208 res = destLayer.CreateFeature(newFeat)
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209 if res is None or res > 0:
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210 logger.error("Unable to insert feature. Error: %r" % res)
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211 else:
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212 success = success + 1
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213 else:
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214 logger.error("Could not transform feature: %s " % feat.GetFID())
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diff changeset
215 creationFailed += 1
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216 else:
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diff changeset
217 creationFailed = creationFailed + 1
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218 else:
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219 unsupported[utils.getWkbString(geomType)] = \
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220 unsupported.get(utils.getWkbString(geomType), 0) + 1
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221
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222 logger.info("Inserted %i features" % success)
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223 logger.info("Failed to create %i features" % creationFailed)
5001
fed74592a2ba Fix syntax error
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
224 for key, value in unsupported.items():
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diff changeset
225 logger.info("Found %i unsupported features of type: %s" % (value, key))
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226
4886
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
227 if self.tracking_import:
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Andre Heinecke <aheinecke@intevation.de>
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228 unhandled = []
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229 for i in range(0, srcLayer.GetLayerDefn().GetFieldCount()):
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diff changeset
230 act_field = srcLayer.GetLayerDefn().GetFieldDefn(i).GetNameRef()
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diff changeset
231 if not act_field in self.handled_fields:
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diff changeset
232 unhandled.append(act_field)
4884
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233
4886
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
234 if len(unhandled):
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235 logger.info("Did not import values from fields: %s " % \
4886
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diff changeset
236 " ".join(unhandled))
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diff changeset
237
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238 try:
4970
174fbaa3d344 Add handling of River Names and remove target_src parameter
Andre Heinecke <aheinecke@intevation.de>
parents: 4951
diff changeset
239 if self.dry_run:
3655
8654e4480fc6 Shape importer: added command line option dry_run to supress database transactions.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 3654
diff changeset
240 return geomType
2853
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
241 destLayer.CommitTransaction()
5160
0dae9e77c5da Importer fix issues reported by pylint
Andre Heinecke <aheinecke@intevation.de>
parents: 5077
diff changeset
242 except:
5006
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diff changeset
243 logger.error("Exception while committing transaction.")
2853
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parents:
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244
bd9e76e0b55d Improved the python shapefile importer.
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diff changeset
245 return geomType
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