[rules-dev] range indexing - help wanted

I started to write this range indexing class, based on a RBTree implementation that I lifted from the web somewhere. However it's a bit buggy, and large ranges null pointer. Anyone want to work on making these stable? Once done we can start using them with not/exists nodes. Standard joins will take a bit more work, due to some integration issues of the tuple structures. The two classes can be found in this commit, just try removing the @Ignore to see the issues, and feel free to add more range tests. https://github.com/droolsjbpm/drools/commit/c789459c431763581db02653fb7bf... drools-core/src/main/java/org/drools/core/util/RBTree.java drools-core/src/test/java/org/drools/core/util/RBTreeTest.java Mark