org.apache.solr.spelling.suggest.fst

Class FSTLookupFactory

java.lang.Object

org.apache.solr.spelling.suggest.LookupFactory

org.apache.solr.spelling.suggest.fst.FSTLookupFactory

public class FSTLookupFactory
extends LookupFactory

Factory for FSTCompletionLookup

Field Summary

Fields

Modifier and Type	Field and Description
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	WEIGHT_BUCKETS The number of separate buckets for weights (discretization).

Constructor Summary

Constructors

Constructor and Description
FSTLookupFactory()

Method Summary

Methods

Modifier and Type	Method and Description
Lookup	create(NamedList params, SolrCore core)
String	storeFileName()

Methods inherited from class java.lang.Object

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

Field Detail

WEIGHT_BUCKETS

public static final String WEIGHT_BUCKETS

The number of separate buckets for weights (discretization). The more buckets, the more fine-grained term weights (priorities) can be assigned. The speed of lookup will not decrease for prefixes which have highly-weighted completions (because these are filled-in first), but will decrease significantly for low-weighted terms (but these should be infrequent, so it is all right).

The number of buckets must be within [1, 255] range.

See Also:

Constant Field Values

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

Constructor Detail

FSTLookupFactory

public FSTLookupFactory()

Method Detail

create

public Lookup create(NamedList params,
            SolrCore core)

Specified by:

create in class LookupFactory

storeFileName

public String storeFileName()

Specified by:

storeFileName in class LookupFactory