Mercurial > dive4elements > river

annotate backend/contrib/shpimporter/importer.py @ 8098:09725b65955a

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Add new and simplyfied SedimentLoadFacet The SedimentLoadFacet is intended to work with the Measurement stations. It uses the same mechanismn to access the Mesurement station values as the calculation does. SedimentLoadLS values need a different facet that will come soon.
author Andre Heinecke <andre.heinecke@intevation.de>
date Fri, 15 Aug 2014 18:27:19 +0200
parents 5aa05a7a34b7
children
rev   line source
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a563e9f58f93 Improve error handling and unify dbconn for all importers
Andre Heinecke <aheinecke@intevation.de>
parents: 4871
diff changeset
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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13 def __init__(self, river_id, dbconn, dry_run):
174fbaa3d344 Add handling of River Names and remove target_src parameter
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14 self.river_id = river_id
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a563e9f58f93 Improve error handling and unify dbconn for all importers
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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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174fbaa3d344 Add handling of River Names and remove target_src parameter
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18 self.dest_srs.ImportFromEPSG(31467)
4884
b457532dae63 Importer: Move copy fields into importer class and track imported/unimported fields
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parents: 4878
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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
bd9e76e0b55d Improved the python shapefile importer.
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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
bd9e76e0b55d Improved the python shapefile importer.
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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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parents: 2862
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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:
82d00b0c7302 (importer) Avoid uneccessary error and improve debug output
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parents: 4877
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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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parents:
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47
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6c2751c17869 Importer: Add function to search a value in all fields.
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48 def searchValue(self, feat, regex):
6c2751c17869 Importer: Add function to search a value in all fields.
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49 """
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ff11b178f152 Fix searchValue and mark a field where a string is found as handled
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50 Searches for a value that matches regex in all attribute
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51 fields of a feature.
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52
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53 @returns the name of the field where a match was found or None
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54 """
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55 for val in feat.items():
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db5def5456ce Only match strings vor field values
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56 if not isinstance(feat.items()[val], basestring):
db5def5456ce Only match strings vor field values
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57 continue
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58 match = re.match(regex, feat.items()[val], re.IGNORECASE)
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59 if match:
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60 return val
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61
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62 def searchField(self, regex):
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63 """
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64 Searches for a field in the current src layer that matches
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65 the expression regex.
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66 Throws an exception if more than one field matches
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67 @param feat: The feature to search for attributes
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68 @param regex: The regex to look for
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69
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70 @returns: The field name as a string
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71 """
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72
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73 if not hasattr(self.srcLayer, "fieldnames"):
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74 self.srcLayer.fieldnames = []
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75 for i in range(0, self.srcLayer.GetLayerDefn().GetFieldCount()):
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76 self.srcLayer.fieldnames.append(
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77 self.srcLayer.GetLayerDefn().GetFieldDefn(i).GetNameRef())
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78
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79 result = None
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80 for name in self.srcLayer.fieldnames:
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81 match = re.match(regex, name, re.IGNORECASE)
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82 if match:
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83 if result:
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84 raise Exception("More than one field matches: %s" % regex)
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85 else:
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86 result = match.group(0)
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87 return result
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88
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89 def IsDoubleFieldSet(self, feat, name):
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90 if not self.IsFieldSet(feat, name):
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91 return False
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92 try:
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93 isset = feat.GetFieldAsDouble(name)
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94 return isset is not None
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95 except:
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96 return False
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97
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98 def isShapeRelevant(self, name, path):
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99 return True
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100
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101 def walkOverShapes(self, shape):
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102 (name, path) = shape
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103
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104 shp = ogr.Open(shape[1])
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105 if shp is None:
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106 logger.error("Shapefile '%s' could not be opened!" % path)
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107 return
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108
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109 if not self.isShapeRelevant(name, path):
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110 logger.info("Skip shapefile: '%s' of Type: %s" % (path,
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111 utils.getWkbString(shp.GetLayerByName(name).GetGeomType())))
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112 return
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113
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114
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115 logger.info("Processing shapefile '%s'" % path)
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116 srcLayer = shp.GetLayerByName(name)
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117
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118 if srcLayer is None:
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119 logger.error("Layer '%s' was not found!" % name)
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120 return
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121
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122 return self.shape2Database(srcLayer, name, path)
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123
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124 def transform(self, feat):
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125 geometry = feat.GetGeometryRef()
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126 src_srs = geometry.GetSpatialReference()
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127
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128 if src_srs is None:
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129 logger.error("No source SRS given! No transformation possible!")
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diff changeset
130 return feat
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131
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diff changeset
132 transformer = osr.CoordinateTransformation(src_srs, self.dest_srs)
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133 if geometry.Transform(transformer):
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134 return None
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135
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diff changeset
136 return feat
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diff changeset
137
4884
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diff changeset
138 def handled(self, field):
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139 """
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diff changeset
140 Register a field or a map of as handled during the import.
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141
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142 There is a warning printed after the import for each unhandled field!
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143 """
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diff changeset
144 if not field in self.handled_fields:
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diff changeset
145 self.handled_fields.append(field)
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146
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diff changeset
147 def copyFields(self, src, target, mapping):
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148 """
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diff changeset
149 Checks the mapping dictonary for key value pairs to
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diff changeset
150 copy from the source to the destination feature.
4935
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151 The keys can be reguar expressions that are matched
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152 agains the source fieldnames
4884
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153
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diff changeset
154 The Key is the attribute of the source feature to be copied
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diff changeset
155 into the target attribute named by the dict's value.
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156 """
4885
89a8764cabcc Importer: Only show imported fields if copy_fields is used
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diff changeset
157 self.tracking_import = True
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158 for key, value in mapping.items():
4935
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159 realname = self.searchField(key)
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160 if realname == None:
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diff changeset
161 continue
4935
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162 if not realname in self.handled_fields:
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163 self.handled_fields.append(realname)
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164 # 0 OFTInteger, Simple 32bit integer
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165 # 1 OFTIntegerList, List of 32bit integers
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parents: 4878
diff changeset
166 # 2 OFTReal, Double Precision floating point
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167 # 3 OFTRealList, List of doubles
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168 # 4 OFTString, String of ASCII chars
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169 # 5 OFTStringList, Array of strings
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170 # 6 OFTWideString, deprecated
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171 # 7 OFTWideStringList, deprecated
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172 # 8 OFTBinary, Raw Binary data
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diff changeset
173 # 9 OFTDate, Date
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174 # 10 OFTTime, Time
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175 # 11 OFTDateTime, Date and Time
4935
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diff changeset
176 if src.IsFieldSet(src.GetFieldIndex(realname)):
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diff changeset
177 if src.GetFieldType(realname) == 2:
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diff changeset
178 target.SetField(value, src.GetFieldAsDouble(realname))
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179 else:
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diff changeset
180 target.SetField(value, utils.getUTF8(src.GetField(realname)))
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181
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182 def shape2Database(self, srcLayer, name, path):
4872
a563e9f58f93 Improve error handling and unify dbconn for all importers
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183 destLayer = self.dbconn.GetLayerByName(self.getTablename())
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184
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185 if srcLayer is None:
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186 logger.error("Shapefile is None!")
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187 return -1
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188
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189 if destLayer is None:
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190 logger.error("No destination layer given!")
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191 return -1
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192
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193 count = srcLayer.GetFeatureCount()
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194 logger.debug("Try to add %i features to database." % count)
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195
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196 srcLayer.ResetReading()
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197 self.srcLayer = srcLayer
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198
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199 geomType = -1
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200 success = 0
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201 unsupported = {}
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202 creationFailed = 0
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203 featureDef = destLayer.GetLayerDefn()
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204
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205 for feat in srcLayer:
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diff changeset
206 geom = feat.GetGeometryRef()
2861
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207
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diff changeset
208 if geom is None:
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209 logger.debug("Unkown Geometry reference for feature")
2861
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diff changeset
210 continue
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diff changeset
211
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212 geomType = geom.GetGeometryType()
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diff changeset
213
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diff changeset
214 if self.isGeometryValid(geomType):
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diff changeset
215 newFeat = self.createNewFeature(featureDef,
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parents:
diff changeset
216 feat,
4951
23a090b41543 Importer: Check lowercase pathname and handle utf-8 conversion
Andre Heinecke <aheinecke@intevation.de>
parents: 4935
diff changeset
217 name=utils.getUTF8(name),
2853
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diff changeset
218 path=path)
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
219
bd9e76e0b55d Improved the python shapefile importer.
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diff changeset
220 if newFeat is not None:
4877
852d4c508f33 (importer) Try to convert paths to UTF-8 for DB insertion
Andre Heinecke <aheinecke@intevation.de>
parents: 4876
diff changeset
221 newFeat.SetField("path", utils.getUTF8Path(path))
2861
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
222 newFeat = self.transform(newFeat)
4974
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
223 if newFeat:
a92241d40228 Handle transformation errors
Andre Heinecke <aheinecke@intevation.de>
parents: 4970
diff changeset
224 res = destLayer.CreateFeature(newFeat)
a92241d40228 Handle transformation errors
Andre Heinecke <aheinecke@intevation.de>
parents: 4970
diff changeset
225 if res is None or res > 0:
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diff changeset
226 logger.error("Unable to insert feature. Error: %r" % res)
4974
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
227 else:
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
228 success = success + 1
2853
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diff changeset
229 else:
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diff changeset
230 logger.error("Could not transform feature: %s " % feat.GetFID())
4974
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diff changeset
231 creationFailed += 1
2861
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diff changeset
232 else:
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diff changeset
233 creationFailed = creationFailed + 1
2853
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diff changeset
234 else:
4995
998b29c8d2fd Improve debug output for unsupported features and skipped shapefiles
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
235 unsupported[utils.getWkbString(geomType)] = \
998b29c8d2fd Improve debug output for unsupported features and skipped shapefiles
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diff changeset
236 unsupported.get(utils.getWkbString(geomType), 0) + 1
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237
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diff changeset
238 logger.info("Inserted %i features" % success)
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diff changeset
239 logger.info("Failed to create %i features" % creationFailed)
5001
fed74592a2ba Fix syntax error
Andre Heinecke <aheinecke@intevation.de>
parents: 4995
diff changeset
240 for key, value in unsupported.items():
5006
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diff changeset
241 logger.info("Found %i unsupported features of type: %s" % (value, key))
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242
4886
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
243 if self.tracking_import:
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
244 unhandled = []
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
245 for i in range(0, srcLayer.GetLayerDefn().GetFieldCount()):
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diff changeset
246 act_field = srcLayer.GetLayerDefn().GetFieldDefn(i).GetNameRef()
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Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
247 if not act_field in self.handled_fields:
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Andre Heinecke <aheinecke@intevation.de>
parents: 4885
diff changeset
248 unhandled.append(act_field)
4884
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Andre Heinecke <aheinecke@intevation.de>
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249
4886
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
250 if len(unhandled):
5006
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Andre Heinecke <aheinecke@intevation.de>
parents: 5004
diff changeset
251 logger.info("Did not import values from fields: %s " % \
4886
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
252 " ".join(unhandled))
4884
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diff changeset
253
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
254 try:
4970
174fbaa3d344 Add handling of River Names and remove target_src parameter
Andre Heinecke <aheinecke@intevation.de>
parents: 4951
diff changeset
255 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
256 return geomType
2853
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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257 destLayer.CommitTransaction()
5160
0dae9e77c5da Importer fix issues reported by pylint
Andre Heinecke <aheinecke@intevation.de>
parents: 5077
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258 except:
5006
769593a84606 Importer: Behold, Logging!
Andre Heinecke <aheinecke@intevation.de>
parents: 5004
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259 logger.error("Exception while committing transaction.")
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bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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260
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
261 return geomType
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