Minor changes to IntervalTree
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Key: CASSANDRA-3146
URL: https://issues.apache.org/jira/browse/CASSANDRA-3146
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: paul cannon
Assignee: paul cannon
Priority: Minor
Fix For: 1.0
I have a few minor changes to IntervalTree that I feel improve its performance
and readability. None of this should have an effect on correctness.
Details:
* rename IntervalNode members v_left/v_right to
intersects_left/intersects_right, to avoid confusion with the members similarly
named "left" and "right"
* remove the unused IntervalNode.interval member
* don't calculate the list of intersecting intervals twice in IntervalNode
constructor
* fix comment in IntervalNode constructor: s/i.min/i.max/
* remove unused java.util.Collections import from IntervalTree.java
* remove unused code path (checking twice for null == node) in
IntervalTree.searchInternal()
* genericize Interval parameter type to IntervalTree.search()
There are still a lot of unchecked operations around the Interval generic
stuff, and the OCD guy inside me wants it to be competely type-safe, but in
real life this ought to be fine like it is. Plus the static Orderings in
Interval.java would need to be made instance variables and that would just be
annoying.
Ok, so, go ahead and ignore any of this if appropriate. It just helped me feel
better with the code.
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