org.eclipse.persistence.jpa.jpql.util.iterator
Class NullListMutator

java.lang.Object
  org.eclipse.persistence.jpa.jpql.util.iterator.NullListMutator

All Implemented Interfaces:

ListMutator<java.lang.Object>

public final class NullListMutator
extends java.lang.Object
implements ListMutator<java.lang.Object>

A null instance of a ListMutator.

Version:

2.4

Since:

2.4

Method Summary

void	add(int index, java.lang.Object item) Adds the specified object to the original list.
static <T> ListMutator<T>	instance() Returns the singleton instance of this NullListMutator.
void	remove(int index) Removes the specified object from the original list.
void	set(int index, java.lang.Object item) Sets the specified object in the original list.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

instance

public static <T> ListMutator<T> instance()

Returns the singleton instance of this NullListMutator.

Returns:

The singleton instance of this NullListMutator

add

public void add(int index,
                java.lang.Object item)

Adds the specified object to the original list.

Specified by:

add in interface ListMutator<java.lang.Object>

Parameters:

index - The index of insertion

item - The element to insert into the list

remove

public void remove(int index)

Removes the specified object from the original list.

Specified by:

remove in interface ListMutator<java.lang.Object>

Parameters:

index - The index of the element to remove

set

public void set(int index,
                java.lang.Object item)

Sets the specified object in the original list.

Specified by:

set in interface ListMutator<java.lang.Object>

Parameters:

index - The index of replacement

item - The element to replace the existing one

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object