org.elasticsearch.index.fielddata

Class RamAccountingTermsEnum

java.lang.Object

org.apache.lucene.index.TermsEnum

org.apache.lucene.index.FilteredTermsEnum

org.elasticsearch.index.fielddata.RamAccountingTermsEnum

All Implemented Interfaces:

org.apache.lucene.util.BytesRefIterator

public final class RamAccountingTermsEnum
extends org.apache.lucene.index.FilteredTermsEnum

TermsEnum that takes a MemoryCircuitBreaker, increasing the breaker every time .next(...) is called. Proxies all methods to the original TermsEnum otherwise.

Nested Class Summary

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

org.apache.lucene.index.FilteredTermsEnum.AcceptStatus

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

org.apache.lucene.index.TermsEnum.SeekStatus

Field Summary

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

actualTerm, tenum

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

EMPTY

Constructor Summary

Constructors

Constructor and Description
RamAccountingTermsEnum(org.apache.lucene.index.TermsEnum termsEnum, CircuitBreaker breaker, AbstractIndexFieldData.PerValueEstimator estimator, java.lang.String fieldName)

Method Summary

Modifier and Type	Method and Description
protected org.apache.lucene.index.FilteredTermsEnum.AcceptStatus	accept(org.apache.lucene.util.BytesRef term) Always accept the term.
void	flush() Flush the flushBuffer to the breaker, incrementing the total bytes and resetting the buffer.
long	getTotalBytes()
org.apache.lucene.util.BytesRef	next() Proxy to the original next() call, but estimates the overhead of loading the next term.

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

attributes, docFreq, nextSeekTerm, ord, postings, seekCeil, seekExact, seekExact, seekExact, setInitialSeekTerm, term, termState, totalTermFreq

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

Constructor Detail

RamAccountingTermsEnum

public RamAccountingTermsEnum(org.apache.lucene.index.TermsEnum termsEnum,
                              CircuitBreaker breaker,
                              AbstractIndexFieldData.PerValueEstimator estimator,
                              java.lang.String fieldName)

Method Detail

accept

protected org.apache.lucene.index.FilteredTermsEnum.AcceptStatus accept(org.apache.lucene.util.BytesRef term)
                                                                 throws java.io.IOException

Always accept the term.

Specified by:

accept in class org.apache.lucene.index.FilteredTermsEnum

Throws:

java.io.IOException

flush

public void flush()

Flush the flushBuffer to the breaker, incrementing the total bytes and resetting the buffer.

next

public org.apache.lucene.util.BytesRef next()
                                     throws java.io.IOException

Proxy to the original next() call, but estimates the overhead of loading the next term.

Specified by:

next in interface org.apache.lucene.util.BytesRefIterator

Overrides:

next in class org.apache.lucene.index.FilteredTermsEnum

Throws:

java.io.IOException

getTotalBytes

public long getTotalBytes()

Returns:

the total number of bytes that have been aggregated