owlcs/owlapi — pull request #304 by sesuncedu (2014-10-07 22:28:09+00:00)
Title: Use a guava weak interner to reuse language tags for plain literals

This change uses a guava weak string interner to reuse language tags.

Using Opencyc.owl as test case (to switch things up a little), since almost all text literals in opencyc.owl have language tags:

Before: total size 666,308,424 (100%), internals 502,138,144 (100%)
After : total size 621,444,560 (**93%**), internals 458,017,704 (**91%**)