Class STMergingBlockReader
- java.lang.Object
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- org.apache.lucene.index.TermsEnum
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- org.apache.lucene.index.BaseTermsEnum
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- org.apache.lucene.codecs.uniformsplit.BlockReader
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- org.apache.lucene.codecs.uniformsplit.sharedterms.STBlockReader
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- org.apache.lucene.codecs.uniformsplit.sharedterms.STMergingBlockReader
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- All Implemented Interfaces:
Accountable
,BytesRefIterator
public class STMergingBlockReader extends STBlockReader
TermsEnum
used when merging segments, to enumerate the terms of an input segment and get all the fieldsTermState
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
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Nested classes/interfaces inherited from class org.apache.lucene.index.TermsEnum
TermsEnum.SeekStatus
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Field Summary
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Fields inherited from class org.apache.lucene.codecs.uniformsplit.sharedterms.STBlockReader
fieldInfos
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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
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Fields inherited from interface org.apache.lucene.util.Accountable
NULL_ACCOUNTABLE
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Constructor Summary
Constructors Constructor Description STMergingBlockReader(IndexDictionary.BrowserSupplier dictionaryBrowserSupplier, IndexInput blockInput, PostingsReaderBase postingsReader, FieldMetadata fieldMetadata, BlockDecoder blockDecoder, FieldInfos fieldInfos)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description BytesRef
next()
PostingsEnum
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
readTermStateIfNotRead()
Reads theBlockTermState
if it is not already set.TermsEnum.SeekStatus
seekCeil(BytesRef searchedTerm)
void
seekExact(long ord)
Not supported.boolean
seekExact(BytesRef searchedTerm)
void
seekExact(BytesRef term, TermState state)
Positions thisBlockReader
without re-seeking the term dictionary.-
Methods inherited from class org.apache.lucene.codecs.uniformsplit.sharedterms.STBlockReader
createBlockLineSerializer, isBeyondLastTerm, nextTerm, readTermState
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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
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Methods inherited from class org.apache.lucene.index.BaseTermsEnum
attributes
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.lucene.util.Accountable
getChildResources
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Constructor Detail
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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 Detail
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seekCeil
public TermsEnum.SeekStatus seekCeil(BytesRef searchedTerm)
- Overrides:
seekCeil
in classSTBlockReader
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seekExact
public boolean seekExact(BytesRef searchedTerm)
- Overrides:
seekExact
in classSTBlockReader
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seekExact
public void seekExact(BytesRef term, TermState state)
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
protected BlockTermState 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
public BytesRef next() throws IOException
- 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 IOException
Reads 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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