cdqa.iterator
Class Null

java.lang.Object
  extended by cdqa.iterator.Iterator
      extended by cdqa.iterator.Null

public final class Null
extends Iterator

the null iterator


Nested Class Summary
 
Nested classes/interfaces inherited from class cdqa.iterator.Iterator
Iterator.IteratorManager
 
Field Summary
 
Fields inherited from class cdqa.iterator.Iterator
current, initValue, NULL
 
Constructor Summary
Null()
           
 
Method Summary
 void postInit()
           
 void preClose()
           
 XObject pumpNext()
           
 
Methods inherited from class cdqa.iterator.Iterator
aggreg, all, and, asBooleanIterator, close, constant, constant, constant, constant, constant, debugPrint, empty, exist, getCurrent, init, init, join, join, list, ljoin, ljoin, map, mapL, mapL, mapL, mTOm, next, not, or, rjoin, rjoin, scan, scan, theFalseIterator, theTrueIterator, toPrintWriter
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Null

public Null()
Method Detail

postInit

public void postInit()
Specified by:
postInit in class Iterator

preClose

public void preClose()
Specified by:
preClose in class Iterator

pumpNext

public XObject pumpNext()
Specified by:
pumpNext in class Iterator