sszuev opened a new issue, #1374:
URL: https://github.com/apache/jena/issues/1374

   ### Version
   
   4.6.0
   
   ### Suggestion
   
   If we want to execute a query in isolated context with unique set of 
independent functions and p-functions, 
   we will encounter some difficulties:
   
   - the method `org.apache.jena.sparql.util.Context#copy` performs only 
shallow copying, not deep
   - there is no straightforward way to pass the context while constructing 
`org.apache.jena.query.QueryExecution`
   
   So we have to spend some time to find the proper way.
   I think this can be simplified by adding two new helper-methods:
   
   - `Context#copyWithFunctionRegistries(Context)` - the method to create a 
copy of `Context` with copied function and p-function registries
   - `QueryExecutionFactory#create(Query, Graph, Context)` - the method to 
create `QueryExceution` for a `Graph` with the given context
   
   
   ### Are you interested in contributing a solution yourself?
   
   Yes


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