- New methods/Data Structures for `RomDataSource` class: - `local_dfs`: list of data frames to be allowed in `sqldf` calls using the `sql_query` method/interface from ds - `get_local_env()`: provide list of dataframes in environment for use in sqldf queries and other env restricted applications - Adds the [roperties `vardefs`, `propvalues`, `tsvalues`, and `features` that are held in datasource class, and adds members of `local_dfs` - `sql_query(query_text, local=FALSE)` - restricts data frame queries to dataframes in the `ds$local_dfs` list - `local=TRUE`: use the ODBC connection not the local dataframes @COBrogan @BrendanBrogan
