[I] Faster parsing of RDF/XML by avoiding duplicated resolving of IRIs and adding cache for IRIx in parsers [jena]

["arne-bdt (via GitHub)" <gi...@apache.org>]

arne-bdt opened a new issue, #2740:
URL: https://github.com/apache/jena/issues/2740

   ### Version
   
   5.2.0-SNAPSHOT
   
   ### Feature
   
   Profiling shows that resolving IRIs takes a lot of time when parsing RDF/XML. 
   (Parsers: RRX.RDFXML_SAX, RRX.RDFXML_StAX_ev, RRX.RDFXML_StAX_sr )
   
   There were two main things, I could do about it:
   - In all current RRX-parsers, many IRIs are parsed twice, when "private Node iriResolve(String uriStr, ..." is called.
      --> I added  "public Node createURI(IRIx iriX, ...);" to the ParserProfile, which simply uses the given IRI instead of resolving it again. 
      --> in some cases this made the reader 25% faster
   - adding general IRIx caching `(org.apache.jena.atlas.lib.cache.CacheSimple`) in the parsers where the already cached org.apache.jena.riot.system.ParserProfileStd#resolver is not applicable
      --> in some cases this gave me another 10%
      
      
   
   ### Are you interested in contributing a solution yourself?
   
   Yes


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