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https://issues.apache.org/jira/browse/SOLR-2993?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Dyer updated SOLR-2993:
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Attachment: SOLR-2993.patch
Patch adds features described in this issue. Users can create a Dictionary
configuration in solrconfig.xml like this:
{code:xml}
<lst name="spellchecker">
<str name="name">wordbreak</str>
<str name="classname">solr.WordBreakSolrSpellChecker</str>
<str name="field">lowerfilt</str>
<str name="combineWords">true</str>
<str name="breakWords">true</str>
<int name="maxChanges">10</int>
</lst>
{code}
Users can also specify multiple "spellcheck.dictionary" parameters. All
specified dictionaries are consulted and results are interleaved. (this is
handled by the new ConjunctionSolrSpellChecker) Collations are created with
combinations from the different spellcheckers, with care taken that mutliple
overlapping corrections do not occur in the same collation.
{code:xml}
<requestHandler name="spellCheckWithWordbreak"
class="org.apache.solr.handler.component.SearchHandler">
<lst name="defaults">
<str name="spellcheck.dictionary">default</str>
<str name="spellcheck.dictionary">wordbreak</str>
<str name="spellcheck.count">20</str>
</lst>
<arr name="last-components">
<str>spellcheck</str>
</arr>
</requestHandler>
{code}
A future enhancement (outside the scope of this issue) would be to extend
ConjunctionSolrSpellChecker to allow arbitrary dictionary combinations. For
instance, if a user wanted to query two fields and have two separate
dictionaries consulted for each field, etc. With this patch, however,
ConjunctionSolrSpellChecker is intended to be used to add Word-Break
suggestions in with Single-Word suggestions.
> Integrate WordBreakSpellChecker with Solr
> -----------------------------------------
>
> Key: SOLR-2993
> URL: https://issues.apache.org/jira/browse/SOLR-2993
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud, spellchecker
> Affects Versions: 4.0
> Reporter: James Dyer
> Priority: Minor
> Fix For: 4.0
>
> Attachments: SOLR-2993.patch
>
>
> A SpellCheckComponent enhancement, leveraging the WordBreakSpellChecker from
> LUCENE-3523:
> - Detect spelling errors resulting from misplaced whitespace without the use
> of shingle-based dictionaries.
> - Seamlessly integrate word-break suggestions with single-word spelling
> corrections from the existing FileBased-, IndexBased- or Direct- spell
> checkers.
> - Provide collation support for word-break errors including cases where the
> user has a mix of single-word spelling errors and word-break errors in the
> same query.
> - Provide shard support.
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