Class TermsConsumer

Abstract API that consumes terms for an individual field.

The lifecycle is:

  1. TermsConsumer is returned for each field by AddField(FieldInfo).
  2. TermsConsumer returns a PostingsConsumer for each term in StartTerm(BytesRef).
  3. When the producer (e.g. IndexWriter) is done adding documents for the term, it calls FinishTerm(BytesRef, TermStats), passing in the accumulated term statistics.
  4. Producer calls Finish(Int64, Int64, Int32) with the accumulated collection statistics when it is finished adding terms to the field.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
Inheritance
System.Object
TermsConsumer
Namespace: Lucene.Net.Codecs
Assembly: Lucene.Net.dll
Syntax
public abstract class TermsConsumer : object

Constructors

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TermsConsumer()

Sole constructor. (For invocation by subclass constructors, typically implicit.)

Declaration
protected TermsConsumer()

Properties

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Comparer

Gets the IComparer<BytesRef> used to sort terms before feeding to this API.

Declaration
public abstract IComparer<BytesRef> Comparer { get; }
Property Value
Type Description
IComparer<BytesRef>

Methods

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Finish(Int64, Int64, Int32)

Called when we are done adding terms to this field. sumTotalTermFreq will be -1 when term frequencies are omitted for the field.

Declaration
public abstract void Finish(long sumTotalTermFreq, long sumDocFreq, int docCount)
Parameters
Type Name Description
System.Int64 sumTotalTermFreq
System.Int64 sumDocFreq
System.Int32 docCount
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FinishTerm(BytesRef, TermStats)

Finishes the current term; numDocs must be > 0. stats.TotalTermFreq will be -1 when term frequencies are omitted for the field.

Declaration
public abstract void FinishTerm(BytesRef text, TermStats stats)
Parameters
Type Name Description
BytesRef text
TermStats stats
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Merge(MergeState, IndexOptions, TermsEnum)

Default merge impl.

Declaration
public virtual void Merge(MergeState mergeState, IndexOptions indexOptions, TermsEnum termsEnum)
Parameters
Type Name Description
MergeState mergeState
IndexOptions indexOptions
TermsEnum termsEnum
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StartTerm(BytesRef)

Starts a new term in this field; this may be called with no corresponding call to finish if the term had no docs.

Declaration
public abstract PostingsConsumer StartTerm(BytesRef text)
Parameters
Type Name Description
BytesRef text
Returns
Type Description
PostingsConsumer