Configuring and customizing the type-ahead feature
The type-ahead feature enables users to use a choice-list drop-down as a search field to find and select items in the choice-list. This feature must be configured before it can be used. It can also be customized.
Configuring type-ahead
For instructions on configuring type-ahead, refer to technote 27042315.
Customizing type-ahead
The type-ahead feature has its own index and analyzer that can be customized; following is its default configuration:
<fieldType name="text" class="solr.TextField" positionIncrementGap="100" autoGeneratePhraseQueries="true">
<analyzer type="index">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
<filter class="solr.NGramFilterFactory" minGramSize="1" maxGramSize="256"/>
</analyzer>
<analyzer type="query">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
</analyzer>
</fieldType>
This configuration enables full-text search behavior like that
of the "Find" function of an editor. Suppose, for example, you want
to customize type-ahead to ignore articles ("a," "an," "the") and
conjunctions ("or," "but," and so on). Specify such words in the file stopwords_en.txt and
edit {FTSHOME}\dbset\userdb\Solr\typeahead\conf\schema.xml as
follows:
<fieldType name="text" class="solr.TextField" positionIncrementGap="100" autoGeneratePhraseQueries="true">
<analyzer type="index">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="lang/stopwords_en.txt" enablePositionIncrements="true"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
<filter class="solr.NGramFilterFactory" minGramSize="1" maxGramSize="256"/>
</analyzer>
<analyzer type="query">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="lang/stopwords_en.txt" enablePositionIncrements="true"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
</analyzer>
</fieldType>
For reference information on all Solr analyzer settings,
refer to Apache Solr Wiki . Note: For reference information about the commands cited in the following
procedure, refer to r_cqtsadmin_pl.
If you customized type-ahead before completing full-text search
deployment (that is, before executing --setup_cq_fts),
no additional step is necessary. If you have already deployed full-text
search, complete the following steps:
- Stop update mode indexing:
--stop_update_idx
- Restart the FTS WAS profile:
--stop_fts_was_profile --start_fts_was_profile
- Regenerate the index:
(Should this command fail before completion, resume indexing using --run_batch_idx.)--fresh_batch_idx
- Re-enable the update mode indexer:
--start_update_idx
- Restart the FTS WAS profile:
--stop_fts_was_profile --start_fts_was_profile