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org.jdaemon.era.java
Class GroupIterator  

java.lang.Object
  org.jdaemon.era.java.GroupIterator

All Implemented Interfaces:

java.util.Iterator

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class GroupIterator

extends java.lang.Object

implements java.util.Iterator

Iterates through a set of cubes definined by unique values of some key attribute Used to implmenent groupByKey() in AbstractIndexedJavaCube

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Field Summary
private  IndexedJavaCube	cube
private  java.util.Iterator	key_iterator

 

Constructor Summary

GroupIterator(IndexedJavaCube cube)           Creates a new instance of GroupIterator

 

Method Summary
boolean	hasNext()           Tests whether there are elements remaining in the collection.
java.lang.Object	next()           Obtain the next element in the collection.
void	remove()           Remove from the underlying collection the last element returned by next (optional operation).

 

Methods inherited from class java.lang.Object

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

 

Field Detail

cube

private IndexedJavaCube cube

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key_iterator

private java.util.Iterator key_iterator

Constructor Detail

GroupIterator

public GroupIterator(IndexedJavaCube cube)

Creates a new instance of GroupIterator

Method Detail

hasNext

public boolean hasNext()

Description copied from interface: java.util.Iterator

Tests whether there are elements remaining in the collection. In other words, calling next() will not throw an exception.

Specified by:

hasNext in interface java.util.Iterator

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next

public java.lang.Object next()

Description copied from interface: java.util.Iterator

Obtain the next element in the collection.

Specified by:

next in interface java.util.Iterator

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remove

public void remove()

Description copied from interface: java.util.Iterator

Remove from the underlying collection the last element returned by next (optional operation). This method can be called only once after each call to next(). It does not affect what will be returned by subsequent calls to next.

Specified by:

remove in interface java.util.Iterator

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