[GRASS-SVN] r53967 - grass/trunk/scripts/v.db.reconnect.all

[svn_grass at osgeo.org]

Author: martinl
Date: 2012-11-22 00:51:34 -0800 (Thu, 22 Nov 2012)
New Revision: 53967

Modified:
   grass/trunk/scripts/v.db.reconnect.all/v.db.reconnect.all.html
   grass/trunk/scripts/v.db.reconnect.all/v.db.reconnect.all.py
Log:
v.db.reconnect.all -c: tries also to create index on key column


Modified: grass/trunk/scripts/v.db.reconnect.all/v.db.reconnect.all.html
===================================================================
--- grass/trunk/scripts/v.db.reconnect.all/v.db.reconnect.all.html	2012-11-22 06:27:50 UTC (rev 53966)
+++ grass/trunk/scripts/v.db.reconnect.all/v.db.reconnect.all.html	2012-11-22 08:51:34 UTC (rev 53967)
@@ -7,7 +7,9 @@
 
 <p>
 Optionally attribute tables in <b>new_database</b> can be created if
-not exist by <b>-c</b> flag. 
+not exist by <b>-c</b> flag. In this case <em>v.db.reconnect.all</em>
+also tries to create index on key column (usually "cat"
+column).
  
 <h2>NOTES</h2>
  

Modified: grass/trunk/scripts/v.db.reconnect.all/v.db.reconnect.all.py
===================================================================
--- grass/trunk/scripts/v.db.reconnect.all/v.db.reconnect.all.py	2012-11-22 06:27:50 UTC (rev 53966)
+++ grass/trunk/scripts/v.db.reconnect.all/v.db.reconnect.all.py	2012-11-22 08:51:34 UTC (rev 53967)
@@ -107,7 +107,15 @@
                               driver = driver, database = database,
                               table = table, stderr = nuldev):
         grass.fatal(_("Unable to drop table <%s>") % table)
-    
+        
+# create index on key column
+def create_index(driver, database, table, index_name, key):
+    grass.info(_("Creating index <%s>...") % index_name)
+    if 0 != grass.run_command('db.execute', quiet = True,
+                              driver = driver, database = database,
+                              sql = "create index %s on %s(%s)" % (index_name, table, key)):
+        grass.warning(_("Unable to create index <%s>") % index_name)
+
 def main():
     old_database = substitute_db(options['old_database'])
     if options['new_driver']:
@@ -163,6 +171,10 @@
                     copy_tab(driver, database, schema_table,
                              new_driver, new_database, new_schema_table)
                 
+                    # try to build index on key column
+                    create_index(new_driver, new_database, new_schema_table,
+                                 table + '_' + key, key)
+                
                 # reconnect tables
                 if 0 != grass.run_command('v.db.connect', flags = 'o', quiet = True, map = vect,
                                           layer = layer, driver = new_driver, database = new_database,
@@ -176,7 +188,10 @@
             else:
                 grass.warning(_("Layer <%d> will not be reconnected, "
                                 "database or schema do not match.") % layer)
-         
+    
+    grass.info(_("It's recommended to change default DB connection settings. "
+                 "See 'db.connect' for details."))
+    
     return 0
 
 if __name__ == "__main__":