Class Lucene90PostingsReader
java.lang.Object
org.apache.lucene.codecs.PostingsReaderBase
org.apache.lucene.backward_codecs.lucene90.Lucene90PostingsReader
- All Implemented Interfaces:
Closeable
,AutoCloseable
Concrete class that reads docId(maybe frq,pos,offset,payloads) list with postings format.
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Nested Class Summary
Nested ClassesModifier and TypeClassDescription(package private) final class
(package private) final class
(package private) final class
(package private) final class
(package private) final class
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate final IndexInput
private final IndexInput
private final IndexInput
private final int
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
Checks consistency of this reader.void
close()
void
decodeTerm
(DataInput in, FieldInfo fieldInfo, BlockTermState _termState, boolean absolute) Actually decode metadata for next term(package private) static int
findFirstGreater
(long[] buffer, int target, int from) impacts
(FieldInfo fieldInfo, BlockTermState state, int flags) Return aImpactsEnum
that computes impacts withscorer
.void
init
(IndexInput termsIn, SegmentReadState state) Performs any initialization, such as reading and verifying the header from the provided terms dictionaryIndexInput
.Return a newly created empty TermStatepostings
(FieldInfo fieldInfo, BlockTermState termState, PostingsEnum reuse, int flags) Must fully consume state, since after this call that TermState may be reused.(package private) static void
prefixSum
(long[] buffer, int count, long base) (package private) static void
readVIntBlock
(IndexInput docIn, long[] docBuffer, long[] freqBuffer, int num, boolean indexHasFreq) Read values that have been written using variable-length encoding instead of bit-packing.toString()
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Field Details
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docIn
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posIn
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payIn
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version
private final int version
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Constructor Details
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Lucene90PostingsReader
Sole constructor.- Throws:
IOException
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Method Details
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init
Description copied from class:PostingsReaderBase
Performs any initialization, such as reading and verifying the header from the provided terms dictionaryIndexInput
.- Specified by:
init
in classPostingsReaderBase
- Throws:
IOException
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readVIntBlock
static void readVIntBlock(IndexInput docIn, long[] docBuffer, long[] freqBuffer, int num, boolean indexHasFreq) throws IOException Read values that have been written using variable-length encoding instead of bit-packing.- Throws:
IOException
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prefixSum
static void prefixSum(long[] buffer, int count, long base) -
findFirstGreater
static int findFirstGreater(long[] buffer, int target, int from) -
newTermState
Description copied from class:PostingsReaderBase
Return a newly created empty TermState- Specified by:
newTermState
in classPostingsReaderBase
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close
- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Specified by:
close
in classPostingsReaderBase
- Throws:
IOException
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decodeTerm
public void decodeTerm(DataInput in, FieldInfo fieldInfo, BlockTermState _termState, boolean absolute) throws IOException Description copied from class:PostingsReaderBase
Actually decode metadata for next term -
postings
public PostingsEnum postings(FieldInfo fieldInfo, BlockTermState termState, PostingsEnum reuse, int flags) throws IOException Description copied from class:PostingsReaderBase
Must fully consume state, since after this call that TermState may be reused.- Specified by:
postings
in classPostingsReaderBase
- Throws:
IOException
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impacts
Description copied from class:PostingsReaderBase
Return aImpactsEnum
that computes impacts withscorer
.- Specified by:
impacts
in classPostingsReaderBase
- Throws:
IOException
- See Also:
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checkIntegrity
Description copied from class:PostingsReaderBase
Checks 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:
checkIntegrity
in classPostingsReaderBase
- Throws:
IOException
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toString
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