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Posted to pr@jena.apache.org by GitBox <gi...@apache.org> on 2022/11/15 21:22:56 UTC

[GitHub] [jena] afs commented on pull request #1616: improve jena performance and behaviour in certain path cases

afs commented on PR #1616:
URL: https://github.com/apache/jena/pull/1616#issuecomment-1315880300

   `TransformPathFlatternAlt` performs `P_Alt` transformation. 
   
   IIRC it interacts with the BGP extension mechanism when considering beyond simple entailment. We;ll need to investigate this.
   
   Things to consider:
   
   * It might be better to restrict optimization to the case of the specific and important case of `(property | property)`, not general path. This is mentioned on [JENA-2325](https://issues.apache.org/jira/browse/JENA-2325).
   * It might be better to do performance improvements in the evaluation stage to preserve semantics. 
   
   
   


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