adql.query

Class NullADQLIterator

java.lang.Object

adql.query.NullADQLIterator

All Implemented Interfaces:

ADQLIterator, java.util.Iterator<ADQLObject>

public class NullADQLIterator
extends java.lang.Object
implements ADQLIterator

An ADQL iterator which has no ADQL objects on which iterate.

Version:

06/2011

Author:

Grégory Mantelet (CDS)

Constructor Summary

Constructors

Constructor and Description
NullADQLIterator()

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
ADQLObject	next()
void	remove()
void	replace(ADQLObject replacer) Replaces the current ADQL object by the given ADQL object.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

NullADQLIterator

public NullADQLIterator()

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<ADQLObject>

next

public ADQLObject next()

Specified by:

next in interface java.util.Iterator<ADQLObject>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<ADQLObject>

replace

public void replace(ADQLObject replacer)
             throws java.lang.UnsupportedOperationException,
                    java.lang.IllegalStateException

Description copied from interface: ADQLIterator

Replaces the current ADQL object by the given ADQL object. This method can be called only one time per call to next.

Specified by:

replace in interface ADQLIterator

Parameters:

replacer - The ADQL object which has to replace the current object.

Throws:

java.lang.UnsupportedOperationException - If the replace operation is not supported by this ADQLIterator.

java.lang.IllegalStateException - If the next method has not yet been called, or the replace method has already been called after the last call to the next method.