Package eu.bandm.tools.ops

Class HashMultiset<A>

java.lang.Object

eu.bandm.tools.ops.HashMultiset<A>

All Implemented Interfaces:

Multiset<A>, Serializable, Iterable<A>

public class HashMultiset<A>
extends Object
implements Multiset<A>

Implementation for domains with no default order, where TreeMultiset is not applicable.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected HashMap<A,Integer>	map

Constructor Summary

Constructors

Constructor	Description
HashMultiset()
HashMultiset(Multiset<? extends A> proto)

Method Summary

Modifier and Type	Method	Description
boolean	add(A a)
boolean	add(A a, int i)
void	clear()
boolean	contains(A a)	Iff get(a)>0!
boolean	containsUnchecked(Object a)
int	count(A o)
int	countAll(Collection<? extends A> c)
int	countAllUnchecked(Collection<?> c)
int	countUnchecked(Object o)
Set<A>	domain()	domain().equals(supportMap().keySet())
boolean	isEmpty()
Iterator<A>	iterator()
boolean	remove(A a)
boolean	removeAll(Collection<? extends A> c)
boolean	removeAllUnchecked(Collection<?> c)
boolean	removeDomain(A a)
boolean	removeDomainUnchecked(Object a)
boolean	removeUnchecked(Object a)
boolean	retainAll(Collection<? extends A> c)
boolean	retainAllUnchecked(Collection<?> c)
Map<A,Integer>	supportMap()	The realizing peer.
String	toString()
protected int	xget(Object a)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Details

map

protected HashMap<A,Integer> map

Constructor Details

HashMultiset

public HashMultiset()

HashMultiset

public HashMultiset(Multiset<? extends A> proto)

Method Details

supportMap

public Map<A,Integer> supportMap()

Description copied from interface: Multiset

The realizing peer. ATTENTION assume no Map.Entry.getValue()==0 is in map, but domain key is removed in case that count == 0.

Specified by:

supportMap in interface Multiset<A>

domain

public Set<A> domain()

Description copied from interface: Multiset

domain().equals(supportMap().keySet())

Specified by:

domain in interface Multiset<A>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Multiset<A>

clear

public void clear()

Specified by:

clear in interface Multiset<A>

xget

protected int xget(Object a)

add

public boolean add(A a)

Specified by:

add in interface Multiset<A>

Returns:

whether the Multiset has been changed. Is defined only for a better analogy to the philosophy of java.util.Collection, but indeed returns always true.

add

public boolean add(A a,
 int i)

Specified by:

add in interface Multiset<A>

Returns:

whether state has changed.

contains

public boolean contains(A a)

Iff get(a)>0!

Specified by:

contains in interface Multiset<A>

containsUnchecked

public boolean containsUnchecked(Object a)

Specified by:

containsUnchecked in interface Multiset<A>

remove

public boolean remove(A a)

Specified by:

remove in interface Multiset<A>

removeUnchecked

public boolean removeUnchecked(Object a)

Specified by:

removeUnchecked in interface Multiset<A>

removeDomain

public boolean removeDomain(A a)

Specified by:

removeDomain in interface Multiset<A>

removeDomainUnchecked

public boolean removeDomainUnchecked(Object a)

Specified by:

removeDomainUnchecked in interface Multiset<A>

removeAll

public boolean removeAll(Collection<? extends A> c)

Specified by:

removeAll in interface Multiset<A>

removeAllUnchecked

public boolean removeAllUnchecked(Collection<?> c)

Specified by:

removeAllUnchecked in interface Multiset<A>

retainAll

public boolean retainAll(Collection<? extends A> c)

Specified by:

retainAll in interface Multiset<A>

retainAllUnchecked

public boolean retainAllUnchecked(Collection<?> c)

Specified by:

retainAllUnchecked in interface Multiset<A>

count

public int count(A o)

Specified by:

count in interface Multiset<A>

countUnchecked

public int countUnchecked(Object o)

Specified by:

countUnchecked in interface Multiset<A>

countAll

public int countAll(Collection<? extends A> c)

Specified by:

countAll in interface Multiset<A>

countAllUnchecked

public int countAllUnchecked(Collection<?> c)

Specified by:

countAllUnchecked in interface Multiset<A>

iterator

public Iterator<A> iterator()

Specified by:

iterator in interface Iterable<A>

toString

public String toString()

Overrides:

toString in class Object