alamb commented on issue #7836:
URL: 
https://github.com/apache/arrow-datafusion/issues/7836#issuecomment-1767422838

   Hi @amartins23 
   
   It seems like the consumer functions such as 
   
https://docs.rs/datafusion-substrait/latest/datafusion_substrait/logical_plan/consumer/fn.from_substrait_plan.html
   
https://docs.rs/datafusion-substrait/latest/datafusion_substrait/physical_plan/consumer/fn.from_substrait_rel.html
   
   Require mutable access, but the producers do not (they already take 
`&SessionContext`, not `&mut SessionContext`)
   
https://docs.rs/datafusion-substrait/latest/datafusion_substrait/logical_plan/producer/fn.to_substrait_plan.html
   
   This I think this ticket would require:
   1. Converting from &mut SessionContext` to &SessionContext`
   2. Ideally add some doc comments / examples of how to do this conversion
   
   This seems straightforward and a good first project so marking it as such
   
   Note there may be some subtlety I don't understand that would make this not 
feasible.
   


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