Mercurial > dive4elements > river

annotate flys-backend/contrib/shpimporter/dgm.py @ 5645:696d710470f5

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flys/issue1077: Show loads as step line, therefore transform data in SedimentLoadFacet to stretch as in the measurement stations bounds. Deal with this new kind of data in the Generator.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 10 Apr 2013 09:35:07 +0200
parents 8d2c576b5a40
children
rev   line source
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5b50247d4d99 Use latin1 as encoding in the dgm importer to make it easier matching latin1
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1 # -*- coding: latin-1 -*-
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2
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3 import codecs
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4 import utils
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5 import datetime
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6
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7 def latin(string):
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8 return unicode(string, "latin1")
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9
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10 import logging
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11 logger = logging.getLogger("DGM")
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12
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13
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14 # <dbfield> : (<csvfield>, conversion function)
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15 DGM_MAP = {
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16 "projection" : "Projektion",
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17 "elevation_state" : latin("H�henstatus"),
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18 "format" : "Format",
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19 "border_break" : ("Bruchkanten",
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20 lambda x: True if x.lower() == "Ja" else False),
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21 "resolution" : (latin("Aufl�sung"), lambda x: x),
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22 # "description" :
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23 "srid" : "SRID",
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24 "path" : ("Pfad_Bestand", lambda x: x),
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25 }
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26
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27 SQL_INSERT_DGT = "INSERT INTO dem (river_id, name," \
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28 " time_interval_id, range_id, " + ", ".join(DGM_MAP.keys()) + \
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29 ") VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)"
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30 SQL_INSERT_DGT_ORA = "INSERT INTO dem (river_id, name," \
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31 " time_interval_id, range_id, " + ", ".join(DGM_MAP.keys()) + \
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32 ") VALUES (:s, :s, :s, :s, :s, :s, :s, :s, :s, :s, :s)"
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33 SQL_SELECT_TIME_ID = """
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34 SELECT id FROM time_intervals WHERE start_time = %s AND stop_time = %s
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35 """
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36 SQL_INSERT_TIME_ID = """
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37 INSERT INTO time_intervals (id, start_time, stop_time) VALUES (%s, %s, %s)
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38 """
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39 SQL_SELECT_TIME_ID_ORA = """
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40 SELECT id FROM time_intervals WHERE start_time = :s AND stop_time = :s
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41 """
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42 SQL_INSERT_TIME_ID_ORA = """
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43 INSERT INTO time_intervals (id, start_time, stop_time) VALUES (:s, :s, :s)
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44 """
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45 SQL_SELECT_RANGE_ID = """
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46 SELECT id FROM ranges WHERE river_id = %s AND a = %s AND b = %s
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47 """
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48 SQL_INSERT_RANGE_ID = """
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49 INSERT INTO ranges (id, river_id, a, b) VALUES (%s, %s, %s, %s)
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50 """
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51 SQL_SELECT_RANGE_ID_ORA = """
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52 SELECT id FROM ranges WHERE river_id = :s AND a = :s AND b = :s
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53 """
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54 SQL_INSERT_RANGE_ID_ORA = """
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55 INSERT INTO ranges (id, river_id, a, b) VALUES (:s, :s, :s, :s)
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56 """
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57 SQL_NEXT_ID = "select nextval('%s_ID_SEQ')"
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58 SQL_NEXT_ID_ORA = "select %s_ID_SEQ.nextval FROM dual"
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59
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60 def next_id(cur, relation, oracle):
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61 if oracle:
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62 cur.execute(SQL_NEXT_ID_ORA % relation.upper())
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63 else:
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64 cur.execute(SQL_NEXT_ID % relation.upper())
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65 idx = cur.fetchone()[0]
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66 return idx
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67
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68 def get_range_id(cur, river_id, a, b, oracle):
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69 if oracle:
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70 cur.execute(SQL_SELECT_RANGE_ID_ORA, (river_id, a, b))
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71 else:
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72 cur.execute(SQL_SELECT_RANGE_ID, (river_id, a, b))
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73 row = cur.fetchone()
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74 if row: return row[0]
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75 idx = next_id(cur, "ranges", oracle)
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76 if oracle:
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77 cur.execute(SQL_INSERT_RANGE_ID_ORA, (idx, river_id, a, b))
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78 else:
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79 cur.execute(SQL_INSERT_RANGE_ID, (idx, river_id, a, b))
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80 cur.connection.commit()
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81 return idx
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82
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83 def get_time_interval_id(cur, a, b, oracle):
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84 if not a or not b:
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85 return None
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86 if oracle:
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87 cur.execute(SQL_SELECT_TIME_ID_ORA, (a, b))
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88 else:
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89 cur.execute(SQL_SELECT_TIME_ID, (a, b))
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90 row = cur.fetchone()
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91 if row: return row[0]
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92 idx = next_id(cur, "time_intervals", oracle)
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93 if oracle:
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94 cur.execute(SQL_INSERT_TIME_ID_ORA, (idx, a, b))
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95 else:
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96 cur.execute(SQL_INSERT_TIME_ID, (idx, a, b))
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97 cur.connection.commit()
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98 return idx
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99
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100 def insertRiverDgm(dbconn, dgmfile, river_name, dry_run, oracle):
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101 with codecs.open(dgmfile, "r", "latin1") as csvfile:
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102 firstline = csvfile.readline()
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103 names = firstline.split(";")
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104 namedict = {}
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105 field_nr = 0
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106 for name in names:
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107 namedict[name] = field_nr
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108 field_nr += 1
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109
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110 river_id = utils.getRiverId(dbconn, river_name, oracle)
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111 for line in csvfile:
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112 fields = line.split(";")
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113 if not fields: continue
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114 if fields[namedict[latin("Gew�sser")]] != \
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115 unicode(utils.getUTF8(river_name),'UTF-8'):
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116 continue
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117 else:
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118 values=[]
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119 for key, val in DGM_MAP.items():
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120 if isinstance(val, tuple):
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121 values.append(val[1](fields[namedict[val[0]]]))
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122 else:
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123 values.append(unicode.encode(
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124 fields[namedict[val]], "UTF-8"))
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125 km_von = fields[namedict["km_von"]]
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126 km_bis = fields[namedict["km_bis"]]
5213
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127 year_from = None
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128 year_to = None
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129 try:
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130 year_from = datetime.datetime(
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131 int(fields[namedict["Jahr_von"]]), 1, 1)
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132 year_to = datetime.datetime(
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133 int(fields[namedict["Jahr_bis"]]),1 ,1)
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134 except ValueError:
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135 logger.warn("Invalid numbers (or none) found in year_from and year_to")
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136
5553
8d2c576b5a40 Convert the river name into unicode
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parents: 5546
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137 name = "%s KM %s - %s" % (unicode(river_name, "latin1"), km_von, km_bis)
4975
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138 cur = dbconn.cursor()
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139 range_id = get_range_id(cur, river_id, float(km_von),
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140 float(km_bis), oracle)
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parents: 5156
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141 time_interval_id = get_time_interval_id(cur, year_from,
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142 year_to, oracle)
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parents: 5156
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143
5036
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parents: 4993
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144 if oracle:
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145 stmt = SQL_INSERT_DGT_ORA
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146 else:
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147 stmt = SQL_INSERT_DGT
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148
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149 cur.execute(stmt, [river_id, name, time_interval_id,
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150 range_id] + values)
4975
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parents:
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151
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parents:
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152 if not dry_run:
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153 dbconn.commit()
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parents:
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154
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