Package org.apache.solr.spelling.suggest

Class Suggester

java.lang.Object

org.apache.solr.spelling.SolrSpellChecker

org.apache.solr.spelling.suggest.Suggester

public class Suggester
extends SolrSpellChecker

Field Summary

Fields

Modifier and Type	Field	Description
protected SolrCore	core
protected org.apache.lucene.search.spell.Dictionary	dictionary
static final String	LOCATION	Location of the source data - either a path to a file, or null for the current IndexReader.
protected org.apache.lucene.search.suggest.Lookup	lookup
static final String	LOOKUP_IMPL	Fully-qualified class of the Lookup implementation.
protected String	lookupImpl
protected org.apache.lucene.index.IndexReader	reader
protected String	sourceLocation
static final String	STORE_DIR	Name of the location where to persist the dictionary.
protected Path	storeDir
protected float	threshold
static final String	THRESHOLD_TOKEN_FREQUENCY	Minimum frequency of terms to consider when building the dictionary.

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

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

Constructor Summary

Constructors

Constructor	Description
Suggester()

Method Summary

Modifier and Type	Method	Description
void	build(SolrCore core, SolrIndexSearcher searcher)	(re)Builds the spelling index.
SpellingResult	getSuggestions(SpellingOptions options)	Get suggestions for the given query.
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.SolrSpellChecker

getAccuracy, getDictionaryName, getQueryAnalyzer, getStringDistance, isSuggestionsMayOverlap, mergeSuggestions, modifyRequest

Methods inherited from class java.lang.Object

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

Field Details

LOCATION

public static final String LOCATION

Location of the source data - either a path to a file, or null for the current IndexReader.

See Also:

• Constant Field Values

LOOKUP_IMPL

public static final String LOOKUP_IMPL

Fully-qualified class of the Lookup implementation.

See Also:

• Constant Field Values

THRESHOLD_TOKEN_FREQUENCY

public static final String THRESHOLD_TOKEN_FREQUENCY

Minimum frequency of terms to consider when building the dictionary.

See Also:

• Constant Field Values

STORE_DIR

public static final String STORE_DIR

Name of the location where to persist the dictionary. If this location is relative then the data will be stored under the core's dataDir. If this is null the storing will be disabled.

See Also:

• Constant Field Values

sourceLocation

protected String sourceLocation

storeDir

protected Path storeDir

threshold

protected float threshold

dictionary

protected org.apache.lucene.search.spell.Dictionary dictionary

reader

protected org.apache.lucene.index.IndexReader reader

lookup

protected org.apache.lucene.search.suggest.Lookup lookup

lookupImpl

protected String lookupImpl

core

protected SolrCore core

Constructor Details

Suggester

public Suggester()

Method Details

init

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

Overrides:

init in class SolrSpellChecker

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

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.

Specified by:

reload in class SolrSpellChecker

Throws:

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

getSuggestions

public SpellingResult getSuggestions(SpellingOptions options)
                              throws IOException

Description copied from class: SolrSpellChecker

Get suggestions for the given query. Tokenizes the query using a field appropriate Analyzer. The SpellingResult.getSuggestions() suggestions must be ordered by best suggestion first.

Specified by:

getSuggestions in class SolrSpellChecker

Parameters:

options - The SpellingOptions to use

Returns:

The SpellingResult suggestions

Throws:

IOException - if there is an error producing suggestions