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

Packages that use MergePolicy

Package	Description
org.apache.lucene.index	Code to maintain and access indices.

Uses of MergePolicy in org.apache.lucene.index

Subclasses of MergePolicy in org.apache.lucene.index

Modifier and Type	Class and 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.
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.
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 and Description
protected MergePolicy	FilterMergePolicy.in The wrapped MergePolicy.
static 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 and Description
MergePolicy	LiveIndexWriterConfig.getMergePolicy() Returns the current MergePolicy in use by this writer.
MergePolicy	IndexWriterConfig.getMergePolicy()

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

Modifier and Type	Method and Description
LiveIndexWriterConfig	LiveIndexWriterConfig.setMergePolicy(MergePolicy mergePolicy) Expert: MergePolicy is invoked whenever there are changes to the segments in the index.
IndexWriterConfig	IndexWriterConfig.setMergePolicy(MergePolicy mergePolicy)

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

Constructor and 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.