Package org.apache.lucene.index
Class MockRandomMergePolicy
- java.lang.Object
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- org.apache.lucene.index.MergePolicy
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- org.apache.lucene.index.MockRandomMergePolicy
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- All Implemented Interfaces:
Closeable
,AutoCloseable
public class MockRandomMergePolicy extends MergePolicy
MergePolicy that makes random decisions for testing.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.index.MergePolicy
MergePolicy.MergeAbortedException, MergePolicy.MergeException, MergePolicy.MergeSpecification, MergePolicy.OneMerge
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Field Summary
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Fields inherited from class org.apache.lucene.index.MergePolicy
writer
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Constructor Summary
Constructors Constructor Description MockRandomMergePolicy(Random random)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Release all resources for the policy.MergePolicy.MergeSpecification
findForcedDeletesMerges(SegmentInfos segmentInfos)
Determine what set of merge operations is necessary in order to expunge all deletes from the index.MergePolicy.MergeSpecification
findForcedMerges(SegmentInfos segmentInfos, int maxSegmentCount, Map<SegmentInfo,Boolean> segmentsToMerge)
Determine what set of merge operations is necessary in order to merge to <= the specified segment count.MergePolicy.MergeSpecification
findMerges(SegmentInfos segmentInfos)
Determine what set of merge operations are now necessary on the index.boolean
useCompoundFile(SegmentInfos infos, SegmentInfo mergedInfo)
Returns true if a new segment (regardless of its origin) should use the compound file format.-
Methods inherited from class org.apache.lucene.index.MergePolicy
setIndexWriter
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Constructor Detail
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MockRandomMergePolicy
public MockRandomMergePolicy(Random random)
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Method Detail
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findMerges
public MergePolicy.MergeSpecification findMerges(SegmentInfos segmentInfos)
Description copied from class:MergePolicy
Determine what set of merge operations are now necessary on the index.IndexWriter
calls this whenever there is a change to the segments. This call is always synchronized on theIndexWriter
instance so only one thread at a time will call this method.- Specified by:
findMerges
in classMergePolicy
- Parameters:
segmentInfos
- the total set of segments in the index
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findForcedMerges
public MergePolicy.MergeSpecification findForcedMerges(SegmentInfos segmentInfos, int maxSegmentCount, Map<SegmentInfo,Boolean> segmentsToMerge) throws CorruptIndexException, IOException
Description copied from class:MergePolicy
Determine what set of merge operations is necessary in order to merge to <= the specified segment count.IndexWriter
calls this when itsIndexWriter.forceMerge(int)
method is called. This call is always synchronized on theIndexWriter
instance so only one thread at a time will call this method.- Specified by:
findForcedMerges
in classMergePolicy
- Parameters:
segmentInfos
- the total set of segments in the indexmaxSegmentCount
- requested maximum number of segments in the index (currently this is always 1)segmentsToMerge
- contains the specific SegmentInfo instances that must be merged away. This may be a subset of all SegmentInfos. If the value is True for a given SegmentInfo, that means this segment was an original segment present in the to-be-merged index; else, it was a segment produced by a cascaded merge.- Throws:
CorruptIndexException
IOException
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findForcedDeletesMerges
public MergePolicy.MergeSpecification findForcedDeletesMerges(SegmentInfos segmentInfos) throws CorruptIndexException, IOException
Description copied from class:MergePolicy
Determine what set of merge operations is necessary in order to expunge all deletes from the index.- Specified by:
findForcedDeletesMerges
in classMergePolicy
- Parameters:
segmentInfos
- the total set of segments in the index- Throws:
CorruptIndexException
IOException
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close
public void close()
Description copied from class:MergePolicy
Release all resources for the policy.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Specified by:
close
in classMergePolicy
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useCompoundFile
public boolean useCompoundFile(SegmentInfos infos, SegmentInfo mergedInfo) throws IOException
Description copied from class:MergePolicy
Returns true if a new segment (regardless of its origin) should use the compound file format.- Specified by:
useCompoundFile
in classMergePolicy
- Throws:
IOException
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