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
TermsEnumused when merging segments, to enumerate the terms of an input segment and get all the fieldsTermStates 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 BytesRefnext()PostingsEnumpostings(String fieldName, BlockTermState termState, PostingsEnum reuse, int flags)Creates a newPostingsEnumfor the provided field andBlockTermState.voidreadFieldTermStatesMap(Map<String,BlockTermState> fieldTermStatesMap)Reads all the fieldsTermStates of the current term and put them in the provided map.protected BlockTermStatereadTermStateIfNotRead()Reads theBlockTermStateif it is not already set.TermsEnum.SeekStatusseekCeil(BytesRef searchedTerm)voidseekExact(long ord)Not supported.booleanseekExact(BytesRef searchedTerm)voidseekExact(BytesRef term, TermState state)Positions thisBlockReaderwithout 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:
seekCeilin classSTBlockReader
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seekExact
public boolean seekExact(BytesRef searchedTerm)
- Overrides:
seekExactin classSTBlockReader
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seekExact
public void seekExact(BytesRef term, TermState state)
Description copied from class:BlockReaderPositions thisBlockReaderwithout 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:
seekExactin classBlockReader
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seekExact
public void seekExact(long ord)
Description copied from class:BlockReaderNot supported.- Overrides:
seekExactin classBlockReader
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readTermStateIfNotRead
protected BlockTermState readTermStateIfNotRead()
Description copied from class:BlockReaderReads theBlockTermStateif it is not already set. SetsBlockReader.termState.- Overrides:
readTermStateIfNotReadin classBlockReader
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next
public BytesRef next() throws IOException
- Specified by:
nextin interfaceBytesRefIterator- Overrides:
nextin classSTBlockReader- Throws:
IOException
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postings
public PostingsEnum postings(String fieldName, BlockTermState termState, PostingsEnum reuse, int flags) throws IOException
Creates a newPostingsEnumfor the provided field andBlockTermState.- Parameters:
reuse- PreviousPostingsEnumto 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 fieldsTermStates of the current term and put them in the provided map. Clears the map first, before puttingTermStates.- Throws:
IOException
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