org.apache.lucene.index
Class TermEnum

java.lang.Object
  org.apache.lucene.index.TermEnum

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

FilteredTermEnum, FilterIndexReader.FilterTermEnum

public abstract class TermEnum
extends Object
implements Closeable

Abstract class for enumerating terms.

Term enumerations are always ordered by Term.compareTo(). Each term in the enumeration is greater than all that precede it.

Constructor Summary

TermEnum()

Method Summary

abstract void	close() Closes the enumeration to further activity, freeing resources.
abstract int	docFreq() Returns the docFreq of the current Term in the enumeration.
abstract boolean	next() Increments the enumeration to the next element.
abstract Term	term() Returns the current Term in the enumeration.

Methods inherited from class java.lang.Object

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

Constructor Detail

TermEnum

public TermEnum()

Method Detail

next

public abstract boolean next()
                      throws IOException

Increments the enumeration to the next element. True if one exists.

Throws:

IOException

term

public abstract Term term()

Returns the current Term in the enumeration.

docFreq

public abstract int docFreq()

Returns the docFreq of the current Term in the enumeration.

close

public abstract void close()
                    throws IOException

Closes the enumeration to further activity, freeing resources.

Specified by:

close in interface Closeable

Throws:

IOException