Package org.apache.lucene.search

Enum ScoreMode

java.lang.Object

java.lang.Enum<ScoreMode>

org.apache.lucene.search.ScoreMode

All Implemented Interfaces:

Serializable, Comparable<ScoreMode>

public enum ScoreMode
extends Enum<ScoreMode>

Different modes of search.

Enum Constant Summary

Enum Constants

Enum Constant	Description
COMPLETE	Produced scorers will allow visiting all matches and get their score.
COMPLETE_NO_SCORES	Produced scorers will allow visiting all matches but scores won't be available.
TOP_DOCS	ScoreMode for top field collectors that can provide their own iterators, to optionally allow to skip for non-competitive docs
TOP_DOCS_WITH_SCORES	ScoreMode for top field collectors that can provide their own iterators, to optionally allow to skip for non-competitive docs.
TOP_SCORES	Produced scorers will optionally allow skipping over non-competitive hits using the Scorable.setMinCompetitiveScore(float) API.

Method Summary

Modifier and Type	Method	Description
boolean	isExhaustive()	Returns true if for this ScoreMode it is necessary to process all documents, or false if is enough to go through top documents only.
boolean	needsScores()	Whether this ScoreMode needs to compute scores.
static ScoreMode	valueOf(String name)	Returns the enum constant of this type with the specified name.
static ScoreMode[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

COMPLETE

public static final ScoreMode COMPLETE

Produced scorers will allow visiting all matches and get their score.

COMPLETE_NO_SCORES

public static final ScoreMode COMPLETE_NO_SCORES

Produced scorers will allow visiting all matches but scores won't be available.

TOP_SCORES

public static final ScoreMode TOP_SCORES

Produced scorers will optionally allow skipping over non-competitive hits using the Scorable.setMinCompetitiveScore(float) API.

TOP_DOCS

public static final ScoreMode TOP_DOCS

ScoreMode for top field collectors that can provide their own iterators, to optionally allow to skip for non-competitive docs

TOP_DOCS_WITH_SCORES

public static final ScoreMode TOP_DOCS_WITH_SCORES

ScoreMode for top field collectors that can provide their own iterators, to optionally allow to skip for non-competitive docs. This mode is used when there is a secondary sort by _score.

Method Detail

values

public static ScoreMode[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ScoreMode c : ScoreMode.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ScoreMode valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

needsScores

public boolean needsScores()

Whether this ScoreMode needs to compute scores.

isExhaustive

public boolean isExhaustive()

Returns true if for this ScoreMode it is necessary to process all documents, or false if is enough to go through top documents only.