org.apache.lucene.codecs.uniformsplit.sharedterms

Class STMergingTermsEnum

java.lang.Object

TermsEnum

org.apache.lucene.codecs.uniformsplit.sharedterms.STMergingTermsEnum

public class STMergingTermsEnum
extends TermsEnum

Combines PostingsEnum for the same term for a given field from multiple segments. It is used during segment merging.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	STMergingTermsEnum.MultiSegmentsPostingsEnum Combines multiple segments PostingsEnum as a single PostingsEnum, for one field and one term.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.String	fieldName
protected STMergingTermsEnum.MultiSegmentsPostingsEnum	multiPostingsEnum
protected BytesRef	term

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	STMergingTermsEnum(java.lang.String fieldName, int numSegments) Constructs a STMergingTermsEnum for a given field.

Method Summary

Modifier and Type	Method and Description
AttributeSource	attributes()
int	docFreq()
ImpactsEnum	impacts(int flags)
BytesRef	next()
long	ord()
PostingsEnum	postings(PostingsEnum reuse, int flags)
protected void	reset(BytesRef term, java.util.List<STUniformSplitTermsWriter.SegmentPostings> segmentPostings) Resets this STMergingTermsEnum with a new term and its list of STUniformSplitTermsWriter.SegmentPostings to combine.
SeekStatus	seekCeil(BytesRef text)
boolean	seekExact(BytesRef text)
void	seekExact(BytesRef term, TermState state)
BytesRef	term()
TermState	termState()
long	totalTermFreq()

Methods inherited from class java.lang.Object

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

Field Detail

fieldName

protected final java.lang.String fieldName

multiPostingsEnum

protected final STMergingTermsEnum.MultiSegmentsPostingsEnum multiPostingsEnum

term

protected BytesRef term

Constructor Detail

STMergingTermsEnum

protected STMergingTermsEnum(java.lang.String fieldName,
                             int numSegments)

Constructs a STMergingTermsEnum for a given field.

Method Detail

reset

protected void reset(BytesRef term,
                     java.util.List<STUniformSplitTermsWriter.SegmentPostings> segmentPostings)

Resets this STMergingTermsEnum with a new term and its list of STUniformSplitTermsWriter.SegmentPostings to combine.

Parameters:

segmentPostings - List sorted by segment index.

attributes

public AttributeSource attributes()

seekExact

public boolean seekExact(BytesRef text)
                  throws java.io.IOException

Throws:

java.io.IOException

seekCeil

public SeekStatus seekCeil(BytesRef text)

seekExact

public void seekExact(BytesRef term,
                      TermState state)
               throws java.io.IOException

Throws:

java.io.IOException

term

public BytesRef term()

ord

public long ord()

docFreq

public int docFreq()

totalTermFreq

public long totalTermFreq()

postings

public PostingsEnum postings(PostingsEnum reuse,
                             int flags)

impacts

public ImpactsEnum impacts(int flags)

termState

public TermState termState()

next

public BytesRef next()