org.apache.lucene.codecs.memory

Class FSTOrdTermsReader.TermsReader.IntersectTermsEnum

java.lang.Object

org.apache.lucene.index.TermsEnum

org.apache.lucene.index.BaseTermsEnum

org.apache.lucene.codecs.memory.FSTOrdTermsReader.TermsReader.BaseTermsEnum

org.apache.lucene.codecs.memory.FSTOrdTermsReader.TermsReader.IntersectTermsEnum

All Implemented Interfaces:

BytesRefIterator

Enclosing class:

FSTOrdTermsReader.TermsReader

private final class FSTOrdTermsReader.TermsReader.IntersectTermsEnum
extends FSTOrdTermsReader.TermsReader.BaseTermsEnum

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame

Nested classes/interfaces inherited from class org.apache.lucene.index.TermsEnum

TermsEnum.SeekStatus

Field Summary

Fields

Modifier and Type	Field and Description
(package private) boolean	decoded
(package private) ByteRunAutomaton	fsa
(package private) FST<java.lang.Long>	fst
(package private) Outputs<java.lang.Long>	fstOutputs
(package private) FST.BytesReader	fstReader
(package private) int	level
(package private) boolean	pending
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame[]	stack
(package private) BytesRefBuilder	term

Fields inherited from class org.apache.lucene.codecs.memory.FSTOrdTermsReader.TermsReader.BaseTermsEnum

bytesLength, bytesStart, docFreq, longs, metaBlockOrd, metaBytesReader, metaLongsReader, ord, state, statsBlockOrd, statsReader, totalTermFreq

Fields inherited from class org.apache.lucene.index.TermsEnum

EMPTY

Constructor Summary

Constructors

Constructor and Description
IntersectTermsEnum(CompiledAutomaton compiled, BytesRef startTerm)

Method Summary

Modifier and Type	Method and Description
(package private) boolean	canGrow(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)
(package private) boolean	canRewind(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)
(package private) void	decodeMetaData() Let PBF decode metadata
(package private) void	decodeStats() Decodes stats data into term state
(package private) BytesRef	doSeekCeil(BytesRef target)
(package private) BytesRefBuilder	grow(int label)
(package private) boolean	isAccept(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)
(package private) boolean	isValid(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame	loadCeilFrame(int label, FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame top, FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame) Load frame for target arc(node) on fst, so that arc.label >= label and !fsa.reject(arc.label)
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame	loadExpandFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame top, FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame) Load frame for target arc(node) on fst
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame	loadFirstFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame) Load frame for start arc(node) on fst
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame	loadNextFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame top, FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame) Load frame for sibling arc(node) on fst
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame	loadVirtualFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame) Virtual frame, never pop
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame	newFrame()
BytesRef	next() Increments the iteration to the next BytesRef in the iterator.
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame	popFrame()
(package private) void	pushFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)
TermsEnum.SeekStatus	seekCeil(BytesRef target) Seeks to the specified term, if it exists, or to the next (ceiling) term.
(package private) BytesRefBuilder	shrink()
BytesRef	term() Returns current term.
(package private) FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame	topFrame()

Methods inherited from class org.apache.lucene.codecs.memory.FSTOrdTermsReader.TermsReader.BaseTermsEnum

docFreq, impacts, ord, postings, refillMetadata, refillStats, seekExact, termState, totalTermFreq

Methods inherited from class org.apache.lucene.index.BaseTermsEnum

attributes, seekExact, seekExact

Methods inherited from class org.apache.lucene.index.TermsEnum

postings

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

term

BytesRefBuilder term

decoded

boolean decoded

pending

boolean pending

stack

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame[] stack

level

int level

fst

final FST<java.lang.Long> fst

fstReader

final FST.BytesReader fstReader

fstOutputs

final Outputs<java.lang.Long> fstOutputs

fsa

final ByteRunAutomaton fsa

Constructor Detail

IntersectTermsEnum

IntersectTermsEnum(CompiledAutomaton compiled,
                   BytesRef startTerm)
            throws java.io.IOException

Throws:

java.io.IOException

Method Detail

term

public BytesRef term()
              throws java.io.IOException

Description copied from class: TermsEnum

Returns current term. Do not call this when the enum is unpositioned.

Specified by:

term in class TermsEnum

Throws:

java.io.IOException

decodeMetaData

void decodeMetaData()
             throws java.io.IOException

Description copied from class: FSTOrdTermsReader.TermsReader.BaseTermsEnum

Let PBF decode metadata

Overrides:

decodeMetaData in class FSTOrdTermsReader.TermsReader.BaseTermsEnum

Throws:

java.io.IOException

decodeStats

void decodeStats()
          throws java.io.IOException

Description copied from class: FSTOrdTermsReader.TermsReader.BaseTermsEnum

Decodes stats data into term state

Overrides:

decodeStats in class FSTOrdTermsReader.TermsReader.BaseTermsEnum

Throws:

java.io.IOException

seekCeil

public TermsEnum.SeekStatus seekCeil(BytesRef target)
                              throws java.io.IOException

Description copied from class: TermsEnum

Seeks to the specified term, if it exists, or to the next (ceiling) term. Returns SeekStatus to indicate whether exact term was found, a different term was found, or EOF was hit. The target term may be before or after the current term. If this returns SeekStatus.END, the enum is unpositioned.

Specified by:

seekCeil in class TermsEnum

Throws:

java.io.IOException

next

public BytesRef next()
              throws java.io.IOException

Description copied from interface: BytesRefIterator

Increments the iteration to the next BytesRef in the iterator. Returns the resulting BytesRef or null if the end of the iterator is reached. The returned BytesRef may be re-used across calls to next. After this method returns null, do not call it again: the results are undefined.

Returns:

the next BytesRef in the iterator or null if the end of the iterator is reached.

Throws:

java.io.IOException - If there is a low-level I/O error.

doSeekCeil

BytesRef doSeekCeil(BytesRef target)
             throws java.io.IOException

Throws:

java.io.IOException

loadVirtualFrame

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame loadVirtualFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)

Virtual frame, never pop

loadFirstFrame

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame loadFirstFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)

Load frame for start arc(node) on fst

loadExpandFrame

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame loadExpandFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame top,
                                                                       FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)
                                                                throws java.io.IOException

Load frame for target arc(node) on fst

Throws:

java.io.IOException

loadNextFrame

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame loadNextFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame top,
                                                                     FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)
                                                              throws java.io.IOException

Load frame for sibling arc(node) on fst

Throws:

java.io.IOException

loadCeilFrame

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame loadCeilFrame(int label,
                                                                     FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame top,
                                                                     FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)
                                                              throws java.io.IOException

Load frame for target arc(node) on fst, so that arc.label >= label and !fsa.reject(arc.label)

Throws:

java.io.IOException

isAccept

boolean isAccept(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)

isValid

boolean isValid(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)

canGrow

boolean canGrow(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)

canRewind

boolean canRewind(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)

pushFrame

void pushFrame(FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame frame)

popFrame

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame popFrame()

newFrame

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame newFrame()

topFrame

FSTOrdTermsReader.TermsReader.IntersectTermsEnum.Frame topFrame()

grow

BytesRefBuilder grow(int label)

shrink

BytesRefBuilder shrink()