Uses of Class
org.apache.lucene.index.MergePolicy

Packages that use MergePolicy

Package	Description
org.apache.lucene.index	Code to maintain and access indices.
org.apache.lucene.misc.index	Misc index tools and index support.
org.apache.lucene.sandbox.index	Experimental index-related classes

Uses of MergePolicy in org.apache.lucene.index

Subclasses of MergePolicy in org.apache.lucene.index

Modifier and Type	Class	Description
class	FilterMergePolicy	A wrapper for MergePolicy instances.
class	LogByteSizeMergePolicy	This is a LogMergePolicy that measures size of a segment as the total byte size of the segment's files.
class	LogDocMergePolicy	This is a LogMergePolicy that measures size of a segment as the number of documents (not taking deletions into account).
class	LogMergePolicy	This class implements a MergePolicy that tries to merge segments into levels of exponentially increasing size, where each level has fewer segments than the value of the merge factor.
final class	NoMergePolicy	A MergePolicy which never returns merges to execute.
class	OneMergeWrappingMergePolicy	A wrapping merge policy that wraps the MergePolicy.OneMerge objects returned by the wrapped merge policy.
final class	SoftDeletesRetentionMergePolicy	This MergePolicy allows to carry over soft deleted documents across merges.
class	TieredMergePolicy	Merges segments of approximately equal size, subject to an allowed number of segments per tier.
class	UpgradeIndexMergePolicy	This MergePolicy is used for upgrading all existing segments of an index when calling IndexWriter.forceMerge(int).

Fields in org.apache.lucene.index declared as MergePolicy

Modifier and Type	Field	Description
protected final MergePolicy	FilterMergePolicy.in	The wrapped MergePolicy.
static final MergePolicy	NoMergePolicy.INSTANCE	Singleton instance.
protected MergePolicy	LiveIndexWriterConfig.mergePolicy	MergePolicy for selecting merges.

Methods in org.apache.lucene.index that return MergePolicy

Modifier and Type	Method	Description
MergePolicy	IndexWriterConfig.getMergePolicy()
MergePolicy	LiveIndexWriterConfig.getMergePolicy()	Returns the current MergePolicy in use by this writer.
MergePolicy	FilterMergePolicy.unwrap()

Methods in org.apache.lucene.index with parameters of type MergePolicy

Modifier and Type	Method	Description
private long	IndexWriter.commitInternal(MergePolicy mergePolicy)
(package private) boolean	ReadersAndUpdates.keepFullyDeletedSegment(MergePolicy mergePolicy)
private final void	IndexWriter.maybeMerge(MergePolicy mergePolicy, MergeTrigger trigger, int maxNumSegments)
private int	IndexWriter.mergeMiddle(MergePolicy.OneMerge merge, MergePolicy mergePolicy)	Does the actual (time-consuming) work of the merge, but without holding synchronized lock on IndexWriter instance
(package private) int	PendingDeletes.numDeletesToMerge(MergePolicy policy, IOSupplier<CodecReader> readerIOSupplier)
(package private) int	PendingSoftDeletes.numDeletesToMerge(MergePolicy policy, IOSupplier<CodecReader> readerIOSupplier)
(package private) int	ReadersAndUpdates.numDeletesToMerge(MergePolicy policy)
IndexWriterConfig	IndexWriterConfig.setMergePolicy(MergePolicy mergePolicy)
LiveIndexWriterConfig	LiveIndexWriterConfig.setMergePolicy(MergePolicy mergePolicy)	Expert: MergePolicy is invoked whenever there are changes to the segments in the index.
private MergePolicy.MergeSpecification	IndexWriter.updatePendingMerges(MergePolicy mergePolicy, MergeTrigger trigger, int maxNumSegments)

Constructors in org.apache.lucene.index with parameters of type MergePolicy

Modifier	Constructor	Description
	FilterMergePolicy(MergePolicy in)	Creates a new filter merge policy instance wrapping another.
	OneMergeWrappingMergePolicy(MergePolicy in, UnaryOperator<MergePolicy.OneMerge> wrapOneMerge)	Constructor
	SoftDeletesRetentionMergePolicy(String field, Supplier<Query> retentionQuerySupplier, MergePolicy in)	Creates a new SoftDeletesRetentionMergePolicy
	UpgradeIndexMergePolicy(MergePolicy in)	Wrap the given MergePolicy and intercept forceMerge requests to only upgrade segments written with previous Lucene versions.

Uses of MergePolicy in org.apache.lucene.misc.index

Subclasses of MergePolicy in org.apache.lucene.misc.index

Modifier and Type	Class	Description
final class	BPReorderingMergePolicy	A merge policy that reorders merged segments according to a BPIndexReorderer.

Constructors in org.apache.lucene.misc.index with parameters of type MergePolicy

Modifier	Constructor	Description
	BPReorderingMergePolicy(MergePolicy in, BPIndexReorderer reorderer)	Sole constructor.

Uses of MergePolicy in org.apache.lucene.sandbox.index

Subclasses of MergePolicy in org.apache.lucene.sandbox.index

Modifier and Type	Class	Description
class	MergeOnFlushMergePolicy	A simple extension to wrap MergePolicy to merge all tiny segments (or at least segments smaller than specified in MergeOnFlushMergePolicy.setSmallSegmentThresholdMB(double) into one segment on commit.

Constructors in org.apache.lucene.sandbox.index with parameters of type MergePolicy

Modifier	Constructor	Description
	MergeOnFlushMergePolicy(MergePolicy mergePolicy)	Creates a MergeOnFlushMergePolicy merge policy instance wrapping another.