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 arbitary Lucene indices.

Refer to SpellCheckComponent for more details.

Since:

solr 1.3

Field Summary

protected IndexReader	reader
protected float	threshold
static 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

IndexBasedSpellChecker()

Method Summary

void	build(SolrCore core, SolrIndexSearcher searcher) (re)Builds the spelling index.
protected IndexReader	determineReader(IndexReader reader)
float	getThreshold()
String	init(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

Methods inherited from class java.lang.Object

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

Field Detail

THRESHOLD_TOKEN_FREQUENCY

public static final String THRESHOLD_TOKEN_FREQUENCY

See Also:

Constant Field Values

threshold

protected float threshold

reader

protected IndexReader reader

Constructor Detail

IndexBasedSpellChecker

public IndexBasedSpellChecker()

Method Detail

init

public String init(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 IndexReader determineReader(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()