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From "Dawid Weiss (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3206) FST package API refactoring
Date Tue, 30 Aug 2011 16:09:38 GMT


Dawid Weiss commented on LUCENE-3206:

I haven't had the time to work on that, sorry. I'll publish what I have on github, if you
want to give it a spin. Essentially I wanted to tackle the following issues:

- clean and well defined algebra of operations and input types,
- GC efficiency during construction so that we don't create intermediate objects if there's
no need to (inherently connected to algebra definition),
- a small, lean and clean API for traversals, with utility methods of higher complexity (suffix
collectors, matchers, etc.)

Only once this is implemented it makes sense to incorporate add-ons Mike worked on (during-the-construction
pruning, different arc storage formats). So, even if it's essentially a sortedmap, there is
a fair bit of complexity involved if you want to make it efficient :)

> FST package API refactoring
> ---------------------------
>                 Key: LUCENE-3206
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/FSTs
>    Affects Versions: 3.2
>            Reporter: Dawid Weiss
>            Assignee: Dawid Weiss
>            Priority: Minor
>             Fix For: 3.4, 4.0
>         Attachments: LUCENE-3206.patch
> The current API is still marked @experimental, so I think there's still time to fiddle
with it. I've been using the current API for some time and I do have some ideas for improvement.
This is a placeholder for these -- I'll post a patch once I have a working proof of concept.

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