Package org.apache.solr.spelling

Class IndexBasedSpellChecker

java.lang.Object

org.apache.solr.spelling.SolrSpellChecker

org.apache.solr.spelling.AbstractLuceneSpellChecker

org.apache.solr.spelling.IndexBasedSpellChecker

public class IndexBasedSpellChecker
extends AbstractLuceneSpellChecker

A spell checker implementation that loads words from Solr as well as arbitrary Lucene indices.

Refer to https://solr.apache.org/guide/solr/latest/query-guide/spell-checking.html for more details.

Since:

solr 1.3

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.lucene.index.IndexReader	reader
protected float	threshold
static final String	THRESHOLD_TOKEN_FREQUENCY

Fields inherited from class org.apache.solr.spelling.AbstractLuceneSpellChecker

accuracy, ACCURACY, COMPARATOR_CLASS, DEFAULT_SUGGESTION_COUNT, dictionary, FIELD, FREQ_COMP, index, INDEX_DIR, indexDir, LOCATION, SCORE_COMP, sd, sourceLocation, spellChecker, SPELLCHECKER_ARG_NAME, STRING_DISTANCE

Fields inherited from class org.apache.solr.spelling.SolrSpellChecker

analyzer, DEFAULT_DICTIONARY_NAME, DICTIONARY_NAME, field, FIELD_TYPE, fieldTypeName, name

Constructor Summary

Constructors

Constructor	Description
IndexBasedSpellChecker()

Method Summary

Modifier and Type	Method	Description
void	build(SolrCore core, SolrIndexSearcher searcher)	(re)Builds the spelling index.
protected org.apache.lucene.index.IndexReader	determineReader(org.apache.lucene.index.IndexReader reader)
float	getThreshold()
String	init(org.apache.solr.common.util.NamedList<?> config, SolrCore core)
void	reload(SolrCore core, SolrIndexSearcher searcher)	Reloads the index.

Methods inherited from class org.apache.solr.spelling.AbstractLuceneSpellChecker

getAccuracy, getField, getFieldTypeName, getIndexDir, getSourceLocation, getSpellChecker, getStringDistance, getSuggestions, initIndex

Methods inherited from class org.apache.solr.spelling.SolrSpellChecker

getDictionaryName, getQueryAnalyzer, isSuggestionsMayOverlap, mergeSuggestions, modifyRequest

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

THRESHOLD_TOKEN_FREQUENCY

public static final String THRESHOLD_TOKEN_FREQUENCY

See Also:

• Constant Field Values

threshold

protected float threshold

reader

protected org.apache.lucene.index.IndexReader reader

Constructor Details

IndexBasedSpellChecker

public IndexBasedSpellChecker()

Method Details

init

public String init(org.apache.solr.common.util.NamedList<?> config,
 SolrCore core)

Overrides:

init in class AbstractLuceneSpellChecker

build

public void build(SolrCore core,
 SolrIndexSearcher searcher)
           throws IOException

Description copied from class: SolrSpellChecker

(re)Builds the spelling index. May be a NOOP if the implementation doesn't require building, or can't be rebuilt.

Specified by:

build in class SolrSpellChecker

Throws:

IOException

determineReader

protected org.apache.lucene.index.IndexReader determineReader(org.apache.lucene.index.IndexReader reader)

Overrides:

determineReader in class AbstractLuceneSpellChecker

reload

public void reload(SolrCore core,
 SolrIndexSearcher searcher)
            throws IOException

Description copied from class: SolrSpellChecker

Reloads the index. Useful if an external process is responsible for building the spell checker.

Overrides:

reload in class AbstractLuceneSpellChecker

Throws:

IOException - If there is a low-level I/O error.

getThreshold

public float getThreshold()