Class UnmanagedQuerier

source code

        object --+        
                 |        
PostgresQueryMixin --+    
                     |    
        object --+   |    
                 |   |    
StandardQueryMixin --+    
                     |    
          QuerierMixin --+
                         |
                        UnmanagedQuerier

A simple interface to querying the database through a connection
managed by someone else.

This is typically used as in::

        with base.getTableConn() as conn:
                q = UnmanagedQuerier(conn)
                ...

This contains numerous methods abstracting DB functionality a bit.
Documented ones include:

* schemaExissts(schema)
* getColumnsFromDB(tableName)
* getTableType(tableName) -- this will return None for non-existing tables,
  which is DaCHS' official way to determine table existence.
* getTimeout() -- returns the current query timeout in seconds
* setTimeout(timeout) -- sets a timeout in seconds.