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From "Adam Hiatt (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-81) Add Query Spellchecker functionality
Date Sat, 03 Mar 2007 00:38:51 GMT

    [ https://issues.apache.org/jira/browse/SOLR-81?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12477568
] 

Adam Hiatt commented on SOLR-81:
--------------------------------

> Is spelling check normally going to be integrated into the "main" index, or will it normally
be a separate index?
AH: It is a separate index.

> If the latter, does it make more sense for some of this (the field definitions &
handler) to be in contrib instead of core? 
AH: That would be fine by me. However, it should be noted that it can be turned on for any
field.

> Any other way to avoid "cluttering" the current schema.xml?
> If spelling check is to be a core feature (that one can turn on for any field in any
index), it seems like it needs to be easier to configure. Having the user 
> define all the ngram fields, fieldTypes, and copyField statements doesn't seem ideal.

AH: I think there is some confusion over Otis's version and mine. I was never able to get
Otis's version (single index using ngram types + copyfields) working fully so I went with
the pure SpellChecker implementation that doesn't require any of that (no schema.xml additions)
It just needs for the user to use a custom request handler to query for spelling corrections
(Otis wrote the original) and a custom commit handler (based on CommitRequestHandler) to rebuild
the spell checker index.

For the record the version I commited is: https://issues.apache.org/jira/secure/attachment/12352485/SOLR-81-spellchecker.patch

> Add Query Spellchecker functionality
> ------------------------------------
>
>                 Key: SOLR-81
>                 URL: https://issues.apache.org/jira/browse/SOLR-81
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>            Reporter: Otis Gospodnetic
>            Priority: Minor
>         Attachments: SOLR-81-edgengram-ngram.patch, SOLR-81-ngram-schema.patch, SOLR-81-ngram.patch,
SOLR-81-ngram.patch, SOLR-81-ngram.patch, SOLR-81-ngram.patch, SOLR-81-spellchecker.patch
>
>
> Use the simple approach of n-gramming outside of Solr and indexing n-gram documents.
 For example:
> <doc>
> <field name="word">lettuce</field>
> <field name="start3">let</field>
> <field name="gram3">let ett ttu tuc uce</field>
> <field name="end3">uce</field>
> <field name="start4">lett</field>
> <field name="gram4">lett ettu ttuc tuce</field>
> <field name="end4">tuce</field>
> </doc>
> See:
> http://www.mail-archive.com/solr-user@lucene.apache.org/msg01254.html
> Java clients: SOLR-20 (add delete commit optimize), SOLR-30 (search)

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