org.apache.lucene.search
Class SingleTermEnum

java.lang.Object
  org.apache.lucene.index.TermEnum
      org.apache.lucene.search.FilteredTermEnum
          org.apache.lucene.search.SingleTermEnum

All Implemented Interfaces:

Closeable

public class SingleTermEnum
extends FilteredTermEnum

Subclass of FilteredTermEnum for enumerating a single term.

This can be used by MultiTermQuerys that need only visit one term, but want to preserve MultiTermQuery semantics such as MultiTermQuery.rewriteMethod.

Field Summary

Fields inherited from class org.apache.lucene.search.FilteredTermEnum

actualEnum, currentTerm

Constructor Summary

SingleTermEnum(IndexReader reader, Term singleTerm)
Creates a new SingleTermEnum.

Method Summary

float	difference() Equality measure on the term
protected boolean	endEnum() Indicates the end of the enumeration has been reached
protected boolean	termCompare(Term term) Equality compare on the term

Methods inherited from class org.apache.lucene.search.FilteredTermEnum

close, docFreq, next, setEnum, term

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleTermEnum

public SingleTermEnum(IndexReader reader,
                      Term singleTerm)
               throws IOException

Creates a new SingleTermEnum.

After calling the constructor the enumeration is already pointing to the term, if it exists.

Throws:

IOException

Method Detail

difference

public float difference()

Description copied from class: FilteredTermEnum

Equality measure on the term

Specified by:

difference in class FilteredTermEnum

endEnum

protected boolean endEnum()

Description copied from class: FilteredTermEnum

Indicates the end of the enumeration has been reached

Specified by:

endEnum in class FilteredTermEnum

termCompare

protected boolean termCompare(Term term)

Description copied from class: FilteredTermEnum

Equality compare on the term

Specified by:

termCompare in class FilteredTermEnum