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https://issues.apache.org/jira/browse/LUCENE-3795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13221190#comment-13221190
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David Smiley commented on LUCENE-3795:
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Uwe,
Regarding byte / character performance stuff, I understand. Last night in
fact, I successfully argued with Ryan that the SpatialPrefixTree (a trie)
belongs with the Lucene spatial module because it is tightly coupled to the
algorithms there. One of the arguments was that it could/should probably use
ByteRef since it works with raw indexed data. Now that this moved over, I
don't think there's code in Spatial4j that is or should be byte oriented.
There's some geospatial (WKT-like) string parsing code, and code that generates
such strings from shapes, and they are String oriented and that makes sense.
As a general statement about performance, you should know that performance is
an important goal of Spatial4j. So if for example the API needs to be a bit
uglier to make performance compromises, this spatial library more than others
is willing to bend. I think benchmarks need to prove this out first on a
case-by-case basis though. Other libraries, like one where I work seems to
take another extreme in which Latitude and Longitude are each separate classes!
> Replace spatial contrib module with LSP's spatial-lucene module
> ---------------------------------------------------------------
>
> Key: LUCENE-3795
> URL: https://issues.apache.org/jira/browse/LUCENE-3795
> Project: Lucene - Java
> Issue Type: New Feature
> Components: modules/spatial
> Reporter: David Smiley
> Assignee: David Smiley
> Fix For: 4.0
>
>
> I propose that Lucene's spatial contrib module be replaced with the
> spatial-lucene module within Lucene Spatial Playground (LSP). LSP has been
> in development for approximately 1 year by David Smiley, Ryan McKinley, and
> Chris Male and we feel it is ready. LSP is here:
> http://code.google.com/p/lucene-spatial-playground/ and the spatial-lucene
> module is intuitively in svn/trunk/spatial-lucene/.
> I'll add more comments to prevent the issue description from being too long.
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