Class STMergingBlockReader
java.lang.Object
org.apache.lucene.index.TermsEnum
org.apache.lucene.index.BaseTermsEnum
org.apache.lucene.codecs.uniformsplit.BlockReader
org.apache.lucene.codecs.uniformsplit.sharedterms.STBlockReader
org.apache.lucene.codecs.uniformsplit.sharedterms.STMergingBlockReader
- All Implemented Interfaces:
Accountable
,BytesRefIterator
TermsEnum
used when merging segments, to enumerate the terms of
an input segment and get all the fields TermState
s of each term.
It only supports calls to next()
and no seek method.
- WARNING: This API is experimental and might change in incompatible ways in the next release.
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Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.index.TermsEnum
TermsEnum.SeekStatus
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Field Summary
Fields inherited from class org.apache.lucene.codecs.uniformsplit.sharedterms.STBlockReader
fieldInfos
Fields inherited from class org.apache.lucene.codecs.uniformsplit.BlockReader
blockDecoder, blockFirstLineStart, blockHeader, blockHeaderReader, blockInput, blockLine, blockLineReader, blockReadBuffer, blockStartFP, dictionaryBrowser, dictionaryBrowserSupplier, fieldMetadata, forcedTerm, lineIndexInBlock, postingsReader, scratchBlockBytes, scratchBlockLine, scratchTermState, termState, termStateForced, termStateSerializer, termStatesReadBuffer
Fields inherited from interface org.apache.lucene.util.Accountable
NULL_ACCOUNTABLE
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Constructor Summary
ConstructorDescriptionSTMergingBlockReader
(IndexDictionary.BrowserSupplier dictionaryBrowserSupplier, IndexInput blockInput, PostingsReaderBase postingsReader, FieldMetadata fieldMetadata, BlockDecoder blockDecoder, FieldInfos fieldInfos) -
Method Summary
Modifier and TypeMethodDescriptionnext()
postings
(String fieldName, BlockTermState termState, PostingsEnum reuse, int flags) Creates a newPostingsEnum
for the provided field andBlockTermState
.void
readFieldTermStatesMap
(Map<String, BlockTermState> fieldTermStatesMap) Reads all the fieldsTermState
s of the current term and put them in the provided map.protected BlockTermState
Reads theBlockTermState
if it is not already set.void
seekExact
(long ord) Not supported.boolean
void
Positions thisBlockReader
without re-seeking the term dictionary.Methods inherited from class org.apache.lucene.codecs.uniformsplit.sharedterms.STBlockReader
createBlockLineSerializer, isBeyondLastTerm, nextTerm, readTermState
Methods inherited from class org.apache.lucene.codecs.uniformsplit.BlockReader
clearTermState, compareToMiddleAndJump, createBlockHeaderSerializer, createDeltaBaseTermStateSerializer, decodeBlockBytesIfNeeded, docFreq, getOrCreateDictionaryBrowser, impacts, initializeBlockReadLazily, initializeHeader, isCurrentTerm, newCorruptIndexException, ord, postings, ramBytesUsed, readHeader, readLineInBlock, seekInBlock, seekInBlock, term, termState, totalTermFreq
Methods inherited from class org.apache.lucene.index.BaseTermsEnum
attributes
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.apache.lucene.util.Accountable
getChildResources
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Constructor Details
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STMergingBlockReader
public STMergingBlockReader(IndexDictionary.BrowserSupplier dictionaryBrowserSupplier, IndexInput blockInput, PostingsReaderBase postingsReader, FieldMetadata fieldMetadata, BlockDecoder blockDecoder, FieldInfos fieldInfos) throws IOException - Throws:
IOException
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Method Details
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seekCeil
- Overrides:
seekCeil
in classSTBlockReader
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seekExact
- Overrides:
seekExact
in classSTBlockReader
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seekExact
Description copied from class:BlockReader
Positions thisBlockReader
without re-seeking the term dictionary.The block containing the term is not read by this method. It will be read lazily only if needed, for example if
BlockReader.next()
is called. CallingBlockReader.postings(org.apache.lucene.index.PostingsEnum, int)
after this method does require the block to be read.- Overrides:
seekExact
in classBlockReader
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seekExact
public void seekExact(long ord) Description copied from class:BlockReader
Not supported.- Overrides:
seekExact
in classBlockReader
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readTermStateIfNotRead
Description copied from class:BlockReader
Reads theBlockTermState
if it is not already set. SetsBlockReader.termState
.- Overrides:
readTermStateIfNotRead
in classBlockReader
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next
- Specified by:
next
in interfaceBytesRefIterator
- Overrides:
next
in classSTBlockReader
- Throws:
IOException
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postings
public PostingsEnum postings(String fieldName, BlockTermState termState, PostingsEnum reuse, int flags) throws IOException Creates a newPostingsEnum
for the provided field andBlockTermState
.- Parameters:
reuse
- PreviousPostingsEnum
to reuse; or null to create a new one.flags
- Postings flags.- Throws:
IOException
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readFieldTermStatesMap
public void readFieldTermStatesMap(Map<String, BlockTermState> fieldTermStatesMap) throws IOExceptionReads all the fieldsTermState
s of the current term and put them in the provided map. Clears the map first, before puttingTermState
s.- Throws:
IOException
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