Mercurial > dive4elements > river
view backend/contrib/shpimporter/uesg.py @ 5890:6ea004d51203
Datacage: Introduced <dc:group epxr="xpath" type="type"> ... </dc:group> and XPath function dc:group-key().
This splits the current result set into groups formed by expr. The type defaults to string.
Afterwards all these groups are iterated by there natural order.
The dc:group-key() gives access to the result of the grouping expression that forms a group.
Say, you have a result set like this:
name | description
-----+------------
a | foo
a | bar
b | baz
b | bla
c | blub
you can use:
<dc:group expr="$name">
<group name="{dc:group-key()}">
<dc:for-each>
<description value="{$description}"/>
</dc:for-each>
</group>
</dc:group>
to create:
<group name="a">
<description name="foo"/>
<description name="bar"/>
</group>
<group name="b">
<description name="baz"/>
<description name="bla"/>
</group>
<group name="c">
<description name="blub"/>
</group>
author | Sascha L. Teichmann <teichmann@intevation.de> |
---|---|
date | Thu, 02 May 2013 20:52:18 +0200 |
parents | 249b8766a178 |
children |
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try: from osgeo import ogr except ImportError: import ogr from importer import Importer import os.path import utils TABLE_NAME="floodmaps" PATH="Hydrologie/UeSG" NAME="UESG" class UESG(Importer): def getPath(self, base): return "%s/%s" % (base, PATH) def getTablename(self): return TABLE_NAME def getName(self): return NAME def isGeometryValid(self, geomType): return geomType in [ogr.wkbMultiPolygon, ogr.wkbPolygon] def getKind(self, path): kind = 0 if path.find("Berechnung") > 0: kind = kind + 100 if path.find("Aktuell") > 0: kind = kind + 10 else: kind = kind + 20 if path.find("Bundesl") > 0: kind = kind + 2 else: kind = kind + 1 else: kind = kind + 200 return kind def createNewFeature(self, featureDef, feat, **args): kind = self.getKind(args['path']) newFeat = ogr.Feature(featureDef) newFeat.SetGeometry(feat.GetGeometryRef()) if self.IsFieldSet(feat, "river_id"): riverId = feat.GetField(feat) else: riverId = self.river_id if self.IsFieldSet(feat, "diff"): diff = feat.GetFieldAsDouble("diff") else: diff = 0 if self.IsFieldSet(feat, "count"): count = feat.GetFieldAsInteger("count") else: count = 0 if self.IsFieldSet(feat, "area"): area = feat.GetFieldAsDouble("area") else: area = 0 if self.IsFieldSet(feat, "perimeter"): perimeter = feat.GetFieldAsDouble("perimeter") else: perimeter = 0 if self.IsFieldSet(feat, "GEWAESSER"): newFeat.SetField("waterbody", feat.GetField("GEWAESSER")) if kind >= 200: newFeat.SetField("source", os.path.basename(os.path.dirname(args['path']))) groupId = 2 newFeat.SetField("river_id", riverId) newFeat.SetField("diff", diff) newFeat.SetField("count", count) newFeat.SetField("area", area) newFeat.SetField("perimeter", perimeter) newFeat.SetField("kind", kind) newFeat.SetField("name", args['name']) return utils.convertToMultiPolygon(newFeat)