X-Git-Url: http://gitweb.michael.orlitzky.com/?p=mailshears.git;a=blobdiff_plain;f=lib%2Fmv%2Fplugins%2Fdavical.rb;h=1a8a18aa70e8d27cef54ad867a230890587e6932;hp=20c8a32af50d668fe8ccba1f690091cbddcafe9a;hb=fa7782720ff15fce29b6f875678e9fd0c197485a;hpb=20b843bddcd73833d41f98ff79d92ef59bb4d81e

diff --git a/lib/mv/plugins/davical.rb b/lib/mv/plugins/davical.rb
index 20c8a32..1a8a18a 100644
--- a/lib/mv/plugins/davical.rb
+++ b/lib/mv/plugins/davical.rb
@@ -3,38 +3,41 @@ require 'pg'
 require 'common/davical_plugin'
 require 'rm/rm_plugin'
 
+# Handle moving (renaming) DAViCal users in its database. DAViCal has
+# no concept of domains.
+#
 class DavicalMv
-  #
-  # DAViCal only supports Postgres, so even if we ever are
-  # database-agnostic, this plugin can't be.
-  #
   include DavicalPlugin
   include MvPlugin
 
 
+  # Move the user *src* to *dst* within the DAViCal database. This
+  # should "rename" him in _every_ table where he is referenced.
+  # DAViCal uses foreign keys properly, so we let the ON UPDATE
+  # CASCADE trigger handle most of the work.
+  #
+  # This can fail is *src* does not exist, or if *dst* already exists
+  # before the move. It should also be an error if the destination
+  # domain doesn't exist. But DAViCal doesn't know about domains, so
+  # we let that slide.
+  #
+  # @param src [User] the source user to be moved.
+  #
+  # @param dst [User] the destination user being moved to.
+  #
   def mv_user(src, dst)
-    # Switch the given usernames. DAViCal uses foreign keys properly
-    # and only supports postgres, so we let the ON UPDATE CASCADE
-    # trigger handle most of the work.
-
-    # It's obviously an error if the source user does not exist. It
-    # would also be an error if the destination domain didn't exist;
-    # however, DAViCal doesn't know about domains, so we let that slide.
     raise NonexistentUserError.new(src.to_s()) if not user_exists(src)
-
-    # And it's an error if the destination user exists already.
     raise UserAlreadyExistsError.new(dst.to_s()) if user_exists(dst)
 
-    sql_queries = ['UPDATE usr SET username = $1 WHERE username = $2']
+    sql_query = 'UPDATE usr SET username = $1 WHERE username = $2;'
 
-    connection = PGconn.connect(@db_host, @db_port, @db_opts, @db_tty,
-                                @db_name, @db_user, @db_pass)
-
-    sql_queries.each do |sql_query|
-      connection.query(sql_query, [dst.to_s(), src.to_s()])
+    connection = PG::Connection.new(@db_hash)
+    begin
+      connection.sync_exec_params(sql_query, [dst.to_s(), src.to_s()])
+    ensure
+      # Make sure the connection gets closed even if the query explodes.
+      connection.close()
     end
-
-    connection.close()
   end
 
 end