/[thuban]/branches/WIP-pyshapelib-bramz/test/postgissupport.py
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revision 2471 by bh, Thu Dec 16 14:19:21 2004 UTC revision 2543 by bh, Fri Jan 21 16:58:31 2005 UTC
# Line 1  Line 1 
1  # Copyright (C) 2003, 2004 by Intevation GmbH  # Copyright (C) 2003, 2004, 2005 by Intevation GmbH
2  # Authors:  # Authors:
3  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
4  #  #
# Line 251  class PostgreSQLServer: Line 251  class PostgreSQLServer:
251               [("gid_offset", 1000)]),               [("gid_offset", 1000)]),
252              ("political", os.path.join("..", "Data", "iceland",              ("political", os.path.join("..", "Data", "iceland",
253                                               "political.shp")),                                               "political.shp")),
254              ("roads", os.path.join("..", "Data", "iceland",              ("roads_multi", os.path.join("..", "Data", "iceland",
255                                           "roads-line.shp")),                                           "roads-line.shp")),
256    
257                # same as roads-multi but using LINESTRING instead of
258                # MULTILINESTRING
259                ("roads", os.path.join("..", "Data", "iceland",
260                                             "roads-line.shp"),
261                 [("force_wkt_type", "LINESTRING")]),
262    
263              # The polygon data as a MULTIPOLYGON geometry type              # The polygon data as a MULTIPOLYGON geometry type
264              ("political_multi", os.path.join("..", "Data", "iceland",              ("political_multi", os.path.join("..", "Data", "iceland",
265                                               "political.shp"),                                               "political.shp"),
# Line 390  class PostGISDatabase: Line 396  class PostGISDatabase:
396              server -- The PostgreSQLServer instance containing the              server -- The PostgreSQLServer instance containing the
397                  database                  database
398    
399              postgis_sql -- Filename of the postgis.sql file with the              postgis_sql -- Filename of the sql file with the postgis
400                  postgis initialization code                  initialization code
401    
402              dbname -- The name of the database              dbname -- The name of the database
403    
# Line 502  def find_postgis_sql(): Line 508  def find_postgis_sql():
508      $bindir/../share/postgresql/.      $bindir/../share/postgresql/.
509    
510      Furthermore, different versions of postgis place the file in      Furthermore, different versions of postgis place the file in
511      slightly different locations.  For instance:      slightly different locations or may even use different names.  For
512        instance:
513    
514        postgis 0.7.5        $datadir/contrib/postgis.sql        postgis 0.7.5        $datadir/contrib/postgis.sql
515        postgis 0.8.1        $datadir/postgis.sql        postgis 0.8.1        $datadir/postgis.sql
516          postgis 1.0.0-rc1    $datadir/lwpostgis.sql
517    
518      To support both versions, we look in both places and return the      To support both versions, we look in both places and return the
519      first one found (looking under contrib first).  If the file is not      first one found (looking under contrib first).  If the file is not
# Line 514  def find_postgis_sql(): Line 522  def find_postgis_sql():
522      bindir = run_config_script("pg_config --bindir").strip()      bindir = run_config_script("pg_config --bindir").strip()
523      datadir = os.path.join(bindir, "..", "share", "postgresql")      datadir = os.path.join(bindir, "..", "share", "postgresql")
524      for filename in [os.path.join(datadir, "contrib", "postgis.sql"),      for filename in [os.path.join(datadir, "contrib", "postgis.sql"),
525                       os.path.join(datadir, "postgis.sql")]:                       os.path.join(datadir, "postgis.sql"),
526                         os.path.join(datadir, "lwpostgis.sql")]:
527          if os.path.exists(filename):          if os.path.exists(filename):
528              return filename              return filename
529    
# Line 629  def coords_to_polygon(coords): Line 638  def coords_to_polygon(coords):
638          poly.append(", ".join(["%r %r" % p for p in ring]))          poly.append(", ".join(["%r %r" % p for p in ring]))
639      return "POLYGON((%s))" % "), (".join(poly)      return "POLYGON((%s))" % "), (".join(poly)
640    
641    def coords_to_linestring(coords):
642        """Return string with a LINESTRING WKT representation of coords"""
643        if len(coords) > 1:
644            raise ValueError("A LINESTRING can only have one arc")
645        return "LINESTRING(%s)" % ", ".join(["%r %r" % p for p in coords[0]])
646    
647  def coords_to_multilinestring(coords):  def coords_to_multilinestring(coords):
648      """Return string with a WKT representation of the arc in coords"""      """Return string with a MULTILINESTRING WKT representation of coords"""
649      poly = []      poly = []
650      for ring in coords:      for ring in coords:
651          poly.append(", ".join(["%r %r" % p for p in ring]))          poly.append(", ".join(["%r %r" % p for p in ring]))
# Line 645  def coords_to_multipolygon(coords): Line 660  def coords_to_multipolygon(coords):
660    
661  wkt_converter = {  wkt_converter = {
662      "POINT": coords_to_point,      "POINT": coords_to_point,
663        "LINESTRING": coords_to_linestring,
664      "MULTILINESTRING": coords_to_multilinestring,      "MULTILINESTRING": coords_to_multilinestring,
665      "POLYGON": coords_to_polygon,      "POLYGON": coords_to_polygon,
666      "MULTIPOLYGON": coords_to_multipolygon,      "MULTIPOLYGON": coords_to_multipolygon,
# Line 663  def upload_shapefile(filename, db, table Line 679  def upload_shapefile(filename, db, table
679      tablename -- The name of the table to create and into which the data      tablename -- The name of the table to create and into which the data
680                  is to be inserted                  is to be inserted
681    
682      force_wkt_type -- If given the real WKT geometry type to use instead      force_wkt_type -- If given and not None, this is used as the WKT
683                  of the default that would be chosen based on the type of                  geometry type to use instead of the default that would
684                  the shapefile                  be chosen based on the type of the shapefile
685    
686      gid_offset -- A number to add to the shapeid to get the value for      gid_offset -- A number to add to the shapeid to get the value for
687                  the gid column (default 0)                  the gid column (default 0)
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