Class Lucene90CompressingStoredFieldsReader
java.lang.Object
org.apache.lucene.index.StoredFields
org.apache.lucene.codecs.StoredFieldsReader
org.apache.lucene.codecs.lucene90.compressing.Lucene90CompressingStoredFieldsReader
- All Implemented Interfaces:
Closeable,AutoCloseable,Cloneable
- WARNING: This API is experimental and might change in incompatible ways in the next release.
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Constructor Summary
ConstructorsConstructorDescriptionLucene90CompressingStoredFieldsReader(Directory d, SegmentInfo si, String segmentSuffix, FieldInfos fn, IOContext context, String formatName, CompressionMode compressionMode) Sole constructor. -
Method Summary
Modifier and TypeMethodDescriptionvoidChecks consistency of this reader.clone()voidclose()Close the underlyingIndexInputs.voiddocument(int docID, StoredFieldVisitor visitor) Expert: visits the fields of a stored document, for custom processing/loading of each field.Returns an instance optimized for merging.voidprefetch(int docID) Optional method: Give a hint to thisStoredFieldsinstance that the given document will be read in the near future.toString()Methods inherited from class org.apache.lucene.index.StoredFields
document, document
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Constructor Details
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Lucene90CompressingStoredFieldsReader
public Lucene90CompressingStoredFieldsReader(Directory d, SegmentInfo si, String segmentSuffix, FieldInfos fn, IOContext context, String formatName, CompressionMode compressionMode) throws IOException Sole constructor.- Throws:
IOException
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Method Details
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close
Close the underlyingIndexInputs.- Throws:
IOException
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prefetch
Description copied from class:StoredFieldsOptional method: Give a hint to thisStoredFieldsinstance that the given document will be read in the near future. This typically delegates toIndexInput.prefetch(long, long)and is useful to parallelize I/O across multiple documents.NOTE: This API is expected to be called on a small enough set of doc IDs that they could all fit in the page cache. If you plan on retrieving a very large number of documents, it may be a good idea to perform calls to
StoredFields.prefetch(int)andStoredFields.document(int)in batches instead of prefetching all documents up-front.- Overrides:
prefetchin classStoredFields- Throws:
IOException
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document
Description copied from class:StoredFieldsExpert: visits the fields of a stored document, for custom processing/loading of each field. If you simply want to load all fields, useStoredFields.document(int). If you want to load a subset, useDocumentStoredFieldVisitor.- Specified by:
documentin classStoredFields- Throws:
IOException
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clone
- Specified by:
clonein classStoredFieldsReader
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getMergeInstance
Description copied from class:StoredFieldsReaderReturns an instance optimized for merging. This instance may not be cloned.The default implementation returns
this- Overrides:
getMergeInstancein classStoredFieldsReader
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checkIntegrity
Description copied from class:StoredFieldsReaderChecks consistency of this reader.Note that this may be costly in terms of I/O, e.g. may involve computing a checksum value against large data files.
- Specified by:
checkIntegrityin classStoredFieldsReader- Throws:
IOException
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toString
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