Github user osma commented on the pull request:
https://github.com/apache/jena/pull/119#issuecomment-169590779
@ajs6f There are two layers of map-like things here. The outer one is the
actual cache (query parameters to result set), and LinkedHashMap is currently
used for that but something like SimpleCache or CacheUnbounded could be used
instead.
If we switch to Cache classes instead of LinkedHashMap then we cannot use
computeIfAbsent, because a Cache isn't a Map. So I can adopt one of your
suggestions, but not both at the same time. Which one do you prefer? :)
Guava classes are used to store result sets i.e. the values stored in the
cache are ListMultimaps. They work well here and I wouldn't replace them with
anything else.
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