Package org.apache.lucene.index

Enum Class MergeTrigger

java.lang.Object

java.lang.Enum<MergeTrigger>

org.apache.lucene.index.MergeTrigger

All Implemented Interfaces:

Serializable, Comparable<MergeTrigger>, Constable

public enum MergeTrigger
extends Enum<MergeTrigger>

MergeTrigger is passed to MergePolicy.findMerges(MergeTrigger, SegmentInfos, MergePolicy.MergeContext) to indicate the event that triggered the merge.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ADD_INDEXES	Merge was triggered by an IndexWriter.addIndexes(CodecReader...) operation
CLOSING	Merge was triggered by a closing IndexWriter.
COMMIT	Merge was triggered on commit.
EXPLICIT	Merge has been triggered explicitly by the user.
FULL_FLUSH	Merge was triggered by a full flush.
GET_READER	Merge was triggered on opening NRT readers.
MERGE_FINISHED	Merge was triggered by a successfully finished merge.
SEGMENT_FLUSH	Merge was triggered by a segment flush.

Method Summary

Modifier and Type	Method	Description
static MergeTrigger	valueOf(String name)	Returns the enum constant of this class with the specified name.
static MergeTrigger[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

SEGMENT_FLUSH

public static final MergeTrigger SEGMENT_FLUSH

Merge was triggered by a segment flush.

FULL_FLUSH

public static final MergeTrigger FULL_FLUSH

Merge was triggered by a full flush. Full flushes can be caused by a commit, NRT reader reopen or a close call on the index writer.

EXPLICIT

public static final MergeTrigger EXPLICIT

Merge has been triggered explicitly by the user.

MERGE_FINISHED

public static final MergeTrigger MERGE_FINISHED

Merge was triggered by a successfully finished merge.

CLOSING

public static final MergeTrigger CLOSING

Merge was triggered by a closing IndexWriter.

COMMIT

public static final MergeTrigger COMMIT

Merge was triggered on commit.

GET_READER

public static final MergeTrigger GET_READER

Merge was triggered on opening NRT readers.

ADD_INDEXES

public static final MergeTrigger ADD_INDEXES

Merge was triggered by an IndexWriter.addIndexes(CodecReader...) operation

Method Details

values

public static MergeTrigger[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

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

valueOf

public static MergeTrigger valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name

NullPointerException - if the argument is null