+ # But the destination *user* should *not* exist.
+ # And it's an error if the destination user exists already.
+ raise UserAlreadyExistsError.new(dst.to_s()) if user_exists(dst)
+
+ mailbox_query = 'UPDATE mailbox SET '
+ mailbox_query += ' username=$1,'
+ mailbox_query += ' domain=$2,'
+ mailbox_query += " maildir=CONCAT($2, '/', $3, '/'),"
+ mailbox_query += ' local_part=$3 '
+ mailbox_query += 'WHERE username=$4;'
+
+ alias_query1 = 'UPDATE alias SET '
+ alias_query1 += ' address=$1,'
+ alias_query1 += ' domain=$2,'
+ alias_query1 += ' goto=REPLACE(goto, $4, $1) '
+ alias_query1 += 'WHERE address=$4;'
+
+ alias_query2 = 'UPDATE alias SET '
+ alias_query2 += 'goto=REPLACE(goto, $4, $1);'
+
+ sql_queries = [mailbox_query, alias_query1, alias_query2]
+
+ connection = PGconn.connect(@db_host, @db_port, @db_opts, @db_tty,
+ @db_name, @db_user, @db_pass)
+
+ sql_queries.each do |sql_query|
+ varchar = 1043 # from pg_type.h
+ params = [{:value => dst.to_s(), :type => varchar},
+ {:value => dst.domainpart(), :type => varchar},
+ {:value => dst.localpart(), :type => varchar},
+ {:value => src.to_s(), :type => varchar}]
+
+ connection.query(sql_query, params)
+ end