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https://issues.apache.org/jira/browse/COLLECTIONS-225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12977940#action_12977940
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Greg Sheremeta commented on COLLECTIONS-225:
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I used Patricia tree from http://code.google.com/p/patricia-trie/
It works great -- thank you Sam and Roger.
It would be helpful if it made its way into collections, for Maven availability
and for corporate policy reasons.
> Contribution: A Patricia Tree
> -----------------------------
>
> Key: COLLECTIONS-225
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-225
> Project: Commons Collections
> Issue Type: New Feature
> Components: Map
> Reporter: Sam Berlin
> Attachments: patricia.zip
>
>
> We (Roger Kapsi & I) would like to contribute a Patricia tree. The tree
> implements the Map & SortedMap interface, meaning it can be used as a
> replacement for any arbitrary map. It also implementes a new 'Trie'
> interface, allowing other implementations or other varieties of Tries to be
> added. The tree is currently written for generics, but that can easily be
> removed. We have used the tree as the structure backing a route table in a
> new Kademlia-based DHT, as the structure backing an IP filter (storing IP
> addresses & IP ranges, allowing retrieval/searching in nanoseconds), and have
> tested it with Strings by storing all of 'hamlet' and comparing it against a
> TreeSet. The tree is also ready to implement NavigableMap whenever Java 1.6
> becomes available.
> I will attach the files in an update to this issue
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