commons-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Daniel Vimont <>
Subject [COLLECTIONS] [DISCUSS] Possible candidate for inclusion in Commons-Collections: OrderedSet (provides composite-key based ordering of a set of values)
Date Fri, 08 Apr 2016 06:17:19 GMT
Hello all,

I've just published a new extension to the standard Java Collections
Framework to both GitHub and the Maven Central Repository, and am
considering offering it up for possible inclusion in the Apache Commons
Collections package.

The name of the class is "OrderedSet", which is an abbreviated version of
its original working name, "CompositeKeyOrderedSet". As its previous
working name suggests, an OrderedSet provides for composite-key based
ordering of a set of values (analogous to composite-key ordering in a
relational database). To get a better sense of what that actually means,
the README text on the project's GitHub page provides a quick overview (or
dive down into the source code on the GitHub page, if you prefer):

For more thorough end-user documentation, the project's Javadocs can be

I realize that "Apache Commons is a Commit-Then-Review community", but
before I go through the steps of preparing a patch for submission I wanted
to get some feedback, if possible, regarding whether this class would be
appropriate for inclusion in the Apache Commons Collections package, and to
be sure that its core functionality does not duplicate either (a) some
already-existing component of the package or (b) some alternate, well-known
(to all but me!) means of achieving automated composite-key-style ordering
(in Java 1.6+).

Thanks very much,

Dan Vimont

  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message