--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VirtualMailManager/Transport.py	Sat Feb 02 19:48:17 2008 +0000
@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+# -*- coding: UTF-8 -*-
+# Copyright 2008 VEB IT
+# See COPYING for distribution information.
+# $Id$
+
+"""Virtual Mail Manager's Transport class to manage the transport for
+domains and accounts."""
+
+from constants.VERSION import VERSION
+
+__author__ = 'Pascal Volk <p.volk@veb-it.de>'
+__version__ = VERSION
+__revision__ = 'rev '+'$Rev$'.split()[1]
+__date__ = '$Date$'.split()[1]
+
+from Exceptions import VMMTransportException
+import constants.ERROR as ERR
+
+class Transport:
+    """A wrapper class thats provide access to the transport table"""
+    def __init__(self, dbh, tid=None, transport=None):
+        """Creates a new Transport instance.
+
+        Either tid or transport must be specified.
+        
+        Keyword arguments:
+        dbh -- a pyPgSQL.PgSQL.connection
+        tid -- the id of a transport (long)
+        transport -- the value of the transport (str)
+        """
+        self._dbh = dbh
+        if tid is None and transport is None:
+            raise VMMTransportException(
+                    ('Either tid or transport must be specified.',
+                        ERR.TRANSPORT_INIT))
+        elif tid is not None:
+            try:
+                self.__id = long(tid)
+            except ValueError:
+                raise VMMTransportException(('tid must be an int/long.',
+                    ERR.TRANSPORT_INIT))
+            self._loadByID()
+        else:
+            self.__transport = transport
+            self._loadByName()
+
+    def _loadByID(self):
+        dbc = self._dbh.cursor()
+        dbc.execute('SELECT transport FROM transport WHERE tid = %s', self.__id)
+        result = dbc.fetchone()
+        dbc.close()
+        if result is not None:
+            self.__transport = result[0]
+        else:
+            raise VMMTransportException(('Unknown tid specified.',
+                ERR.UNKNOWN_TRANSPORT_ID))
+
+    def _loadByName(self):
+        dbc = self._dbh.cursor()
+        dbc.execute('SELECT tid FROM transport WHERE transport = %s',
+                self.__transport)
+        result = dbc.fetchone()
+        dbc.close()
+        if result is not None:
+            self.__id = result[0]
+        else:
+            self._save()
+
+    def _save(self):
+        dbc = self._dbh.cursor()
+        dbc.execute("SELECT nextval('transport_id')")
+        self.__id = dbc.fetchone()[0]
+        dbc.execute('INSERT INTO transport (tid, transport) VALUES (%s, %s)',
+                self.__id, self.__transport)
+        self._dbh.commit()
+        dbc.close()
+
+    def getID(self):
+        """Returns the unique ID of the transport."""
+        return self.__id
+
+    def getTransport(self):
+        """Returns the value of transport, ex: 'dovecot:'"""
+        return self.__transport