Description
There are some trivial optimisations that can be done in order to improve the efficiency of the selectors.
This is a port of some enhancements from my fork of the selectors code
https://github.com/datastax/pulsar-jms/tree/master/activemq-filters
I don't have numbers to share but profiling showed up a non negligible saving of CPU resources
The changes in this patch are related to the Equals and the Not operators