Package com.tagtraum.core.util

Class VetoableModificationSet<T>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

java.util.HashSet<T>

com.tagtraum.core.util.VetoableModificationSet<T>

Type Parameters:

T - element type

All Implemented Interfaces:

Serializable, Cloneable, Iterable<T>, Collection<T>, Set<T>

public abstract class VetoableModificationSet<T>
extends HashSet<T>

HashSet that calls methods before adding or removing elements from its collection.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
VetoableModificationSet()

Method Summary

Modifier and Type	Method	Description
boolean	add(T element)
boolean	addAll(Collection<? extends T> collection)
void	clear()
protected boolean	internalAdd(T element)	Use this method to add elements without checking for vetoes.
protected boolean	internalAddAll(Collection<? extends T> c)	Use this method to add elements without checking for vetoes.
protected boolean	isAddable(T element)	Is called before the given element is actually added to this collection.
protected boolean	isRemovable(Object o)	Is called before the given object is actually removed from this collection.
Iterator<T>	iterator()
boolean	remove(Object o)
String	toString()

Methods inherited from class java.util.HashSet

clone, contains, isEmpty, size, spliterator

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

containsAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

Constructor Detail

VetoableModificationSet

public VetoableModificationSet()

Method Detail

internalAdd

protected boolean internalAdd(T element)

Use this method to add elements without checking for vetoes.

Parameters:

element - element

internalAddAll

protected boolean internalAddAll(Collection<? extends T> c)

Use this method to add elements without checking for vetoes.

Parameters:

c - collection

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in interface Set<T>

Overrides:

iterator in class HashSet<T>

add

public boolean add(T element)

Specified by:

add in interface Collection<T>

Specified by:

add in interface Set<T>

Overrides:

add in class HashSet<T>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<T>

Specified by:

remove in interface Set<T>

Overrides:

remove in class HashSet<T>

addAll

public boolean addAll(Collection<? extends T> collection)

Specified by:

addAll in interface Collection<T>

Specified by:

addAll in interface Set<T>

Overrides:

addAll in class AbstractCollection<T>

clear

public void clear()

Specified by:

clear in interface Collection<T>

Specified by:

clear in interface Set<T>

Overrides:

clear in class HashSet<T>

isAddable

protected boolean isAddable(T element)

Is called before the given element is actually added to this collection. You may also use this method to notify another object of the pending addition.

Parameters:

element - object to add

Returns:

return true, if you want the element to be added, false otherwise

isRemovable

protected boolean isRemovable(Object o)

Is called before the given object is actually removed from this collection. You may also use this method to notify another object of the pending removal.

Parameters:

o - object to remove

Returns:

return true, if the given element can be removed, false otherwise

toString

public String toString()

Overrides:

toString in class AbstractCollection<T>