Having a regular tupelo context, you can create a context with time annotating capabilities by decorating a the regular context with a CompositeContext:
Context context = ... //a regular tupelo context
DataSource dataSource =
DataSourceFactory.getDataSource(DBType.MYSQL,"jdbc:mysql://host/db",
"user","password");
Context timeAnnotatingContext = new CompositeContext(context,dataSource,DBType.MYSQL);