Mercurial > dive4elements > river

annotate flys-backend/contrib/shpimporter/dgm.py @ 5193:fb9dcc68b9c2

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Possible fix for flys/1202. Initial SQL statements can now be issued at connection creation.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 07 Mar 2013 17:39:25 +0100
parents f459911fdbfb
children 908848b74d7e
rev   line source
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1 # -*- coding: utf-8 -*-
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2
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3 import codecs
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4 import utils
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5
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6 def latin(string):
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7 return unicode(string, "latin1")
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8
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9 # <dbfield> : (<csvfield>, conversion function)
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10 DGM_MAP = {
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11 "lower" : ("km_von", lambda x: float(x)),
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12 "upper" : ("km_bis", lambda x: float(x)),
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13 "year_from" : "Jahr_von",
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14 "year_to" : "Jahr_bis",
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15 "projection" : "Projektion",
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16 "elevation_state" : latin("Höhenstatus"),
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17 "format" : "Format",
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18 "border_break" : ("Bruchkanten",
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19 lambda x: True if x.lower() == "Ja" else False),
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20 "resolution" : (latin("Auflösung"), lambda x: x),
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21 # "description" :
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22 "srid" : "SRID",
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23 "path" : ("Pfad_Bestand", lambda x: x),
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24 }
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25
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26 SQL_INSERT_DGT = "INSERT INTO dem (river_id, name, " + ", ".join(DGM_MAP.keys()) + \
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27 ") VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)"
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28 SQL_INSERT_DGT_ORA = "INSERT INTO dem (river_id, name, " + ", ".join(DGM_MAP.keys()) + \
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29 ") VALUES (:s, :s, :s, :s, :s, :s, :s, :s, :s, :s, :s, :s, :s)"
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30
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31 def insertRiverDgm(dbconn, dgmfile, river_name, dry_run, oracle):
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32 with codecs.open(dgmfile, "r", "latin1") as csvfile:
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33 firstline = csvfile.readline()
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34 names = firstline.split(";")
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35 namedict = {}
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36 field_nr = 0
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37 for name in names:
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38 namedict[name] = field_nr
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39 field_nr += 1
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40
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41 river_id = utils.getRiverId(dbconn, river_name, oracle)
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42 for line in csvfile:
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43 fields = line.split(";")
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44 if not fields: continue
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45 if fields[namedict[latin("Gewässer")]] != river_name:
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46 continue
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47 else:
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48 values=[]
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49 for key, val in DGM_MAP.items():
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50 if isinstance(val, tuple):
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51 values.append(val[1](fields[namedict[val[0]]]))
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52 else:
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53 values.append(unicode.encode(
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54 fields[namedict[val]], "UTF-8"))
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55 name = "%s KM %s - %s" % (river_name, fields[namedict["km_von"]],
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56 fields[namedict["km_bis"]])
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57 cur = dbconn.cursor()
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58 if oracle:
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59 stmt = SQL_INSERT_DGT_ORA
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60 else:
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61 stmt = SQL_INSERT_DGT
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62
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63 cur.execute(stmt, [river_id, name] + values)
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64
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65 if not dry_run:
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66 dbconn.commit()
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67
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