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 TermStates 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 -
Field Summary
Fields inherited from class org.apache.lucene.codecs.uniformsplit.sharedterms.STBlockReader
fieldInfosFields 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, termStatesReadBufferFields inherited from interface org.apache.lucene.util.Accountable
NULL_ACCOUNTABLE -
Constructor Summary
ConstructorsConstructorDescriptionSTMergingBlockReader(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 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 BlockTermStateReads theBlockTermStateif it is not already set.voidseekExact(long ord) Not supported.booleanvoidPositions thisBlockReaderwithout re-seeking the term dictionary.Methods inherited from class org.apache.lucene.codecs.uniformsplit.sharedterms.STBlockReader
createBlockLineSerializer, isBeyondLastTerm, nextTerm, readTermStateMethods 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, totalTermFreqMethods inherited from class org.apache.lucene.index.BaseTermsEnum
attributes, prepareSeekExactMethods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods 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:
seekCeilin classSTBlockReader
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seekExact
- Overrides:
seekExactin classSTBlockReader
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seekExact
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
Description copied from class:BlockReaderReads theBlockTermStateif it is not already set. SetsBlockReader.termState.- Overrides:
readTermStateIfNotReadin classBlockReader
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next
- 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 IOExceptionReads 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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