org.apache.solr.spelling.suggest.fst
Class AnalyzingLookupFactory

java.lang.Object
  org.apache.solr.spelling.suggest.LookupFactory
      org.apache.solr.spelling.suggest.fst.AnalyzingLookupFactory

public class AnalyzingLookupFactory
extends LookupFactory

Factory for AnalyzingSuggester

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary

static String	EXACT_MATCH_FIRST If true, exact suggestions are returned first, even if they are prefixes of other strings in the automaton (possibly with larger weights).
static String	MAX_EXPANSIONS When building the FST ("index-time"), we add each path through the tokenstream graph as an individual entry.
static String	MAX_SURFACE_FORMS When multiple suggestions collide to the same analyzed form, this is the limit of how many unique surface forms we keep.
static String	PRESERVE_POSITION_INCREMENTS Whether position holes should appear in the automaton.
static String	PRESERVE_SEP If true, then a separator between tokens is preserved.
static String	QUERY_ANALYZER The analyzer used at "query-time" and "build-time" to analyze suggestions.

Fields inherited from class org.apache.solr.spelling.suggest.LookupFactory

DEFAULT_FILE_BASED_DICT

Constructor Summary

AnalyzingLookupFactory()

Method Summary

Lookup	create(NamedList params, SolrCore core) Create a Lookup using config options in params and current core
String	storeFileName() Returns the filename in which the in-memory data structure is stored

Methods inherited from class java.lang.Object

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

Field Detail

EXACT_MATCH_FIRST

public static final String EXACT_MATCH_FIRST

If true, exact suggestions are returned first, even if they are prefixes of other strings in the automaton (possibly with larger weights).

See Also:

Constant Field Values

PRESERVE_SEP

public static final String PRESERVE_SEP

If true, then a separator between tokens is preserved. This means that suggestions are sensitive to tokenization (e.g. baseball is different from base ball).

See Also:

Constant Field Values

MAX_SURFACE_FORMS

public static final String MAX_SURFACE_FORMS

When multiple suggestions collide to the same analyzed form, this is the limit of how many unique surface forms we keep.

See Also:

Constant Field Values

MAX_EXPANSIONS

public static final String MAX_EXPANSIONS

When building the FST ("index-time"), we add each path through the tokenstream graph as an individual entry. This places an upper-bound on how many expansions will be added for a single suggestion.

See Also:

Constant Field Values

QUERY_ANALYZER

public static final String QUERY_ANALYZER

The analyzer used at "query-time" and "build-time" to analyze suggestions.

See Also:

Constant Field Values

PRESERVE_POSITION_INCREMENTS

public static final String PRESERVE_POSITION_INCREMENTS

Whether position holes should appear in the automaton.

See Also:

Constant Field Values

Constructor Detail

AnalyzingLookupFactory

public AnalyzingLookupFactory()

Method Detail

create

public Lookup create(NamedList params,
                     SolrCore core)

Description copied from class: LookupFactory

Create a Lookup using config options in params and current core

Specified by:

create in class LookupFactory

storeFileName

public String storeFileName()

Description copied from class: LookupFactory

Returns the filename in which the in-memory data structure is stored

NOTE: not all Lookup implementations store in-memory data structures

Specified by:

storeFileName in class LookupFactory