Package net.cscott.jutil

Class UnmodifiableMultiMap<K,V>

java.lang.Object

net.cscott.jutil.MapWrapper<K,V>

net.cscott.jutil.UnmodifiableMap<K,V>

net.cscott.jutil.UnmodifiableMultiMap<K,V>

All Implemented Interfaces:

Map<K,V>, MultiMap<K,V>

public abstract class UnmodifiableMultiMap<K,V>
extends UnmodifiableMap<K,V>
implements MultiMap<K,V>

UnmodifiableMultiMap is an abstract superclass to save developers the trouble of implementing the various mutator methds of the MultiMap interface.

Author:

Felix S. Klock II <pnkfelix@mit.edu>

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	UnmodifiableMultiMap()

Method Summary

Modifier and Type	Method	Description
boolean	add(K key, V value)	Throws UnsupportedOperationException.
boolean	addAll(K key, Collection<? extends V> values)	Throws UnsupportedOperationException.
boolean	addAll(MultiMap<? extends K,? extends V> mm)	Throws UnsupportedOperationException.
boolean	contains(Object a, Object b)	Returns true if a has a mapping to b in this.
abstract UnmodifiableMultiMapSet<K,V>	entrySet()	Returns a Set view that allows you to recapture the MultiMap view.
Collection<V>	getValues(K key)	Returns the collection of Values associated with key.
static <K, V> MultiMap<K,V>	proxy(MultiMap<K,V> mmap)	Constructs and returns an unmodifiable MultiMap backed by mmap.
boolean	remove(Object key, Object value)	Throws UnsupportedOperationException.
boolean	removeAll(K key, Collection<?> values)	Throws UnsupportedOperationException.
boolean	retainAll(K key, Collection<?> values)	Throws UnsupportedOperationException.
protected abstract MultiMap<K,V>	wrapped()	Implementations should return the wrapped Map here.

Methods inherited from class net.cscott.jutil.UnmodifiableMap

clear, keySet, proxy, put, putAll, remove, values

Methods inherited from class net.cscott.jutil.MapWrapper

containsKey, containsValue, equals, get, hashCode, isEmpty, size, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, equals, forEach, getOrDefault, hashCode, isEmpty, keySet, merge, putIfAbsent, replace, values

Methods inherited from interface net.cscott.jutil.MultiMap

get, put, putAll, remove, replace, replaceAll, size

Constructor Details

UnmodifiableMultiMap

protected UnmodifiableMultiMap()

Method Details

wrapped

protected abstract MultiMap<K,V> wrapped()

Description copied from class: MapWrapper

Implementations should return the wrapped Map here.

Specified by:

wrapped in class MapWrapper<K,V>

proxy

public static <K,
V> MultiMap<K,V> proxy(MultiMap<K,V> mmap)

Constructs and returns an unmodifiable MultiMap backed by mmap.

entrySet

public abstract UnmodifiableMultiMapSet<K,V> entrySet()

Returns a Set view that allows you to recapture the MultiMap view.

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in interface MultiMap<K,V>

Specified by:

entrySet in class UnmodifiableMap<K,V>

getValues

public Collection<V> getValues(K key)

Description copied from interface: MultiMap

Returns the collection of Values associated with key. Modifications to the returned Collection affect this as well. If there are no Values currently associated with key, constructs a new, potentially mutable, empty Collection and returns it. (MultiMap specific operation).

Specified by:

getValues in interface MultiMap<K,V>

contains

public boolean contains(Object a,
 Object b)

Description copied from interface: MultiMap

Returns true if a has a mapping to b in this. (MultiMap specific operation).

Specified by:

contains in interface MultiMap<K,V>

remove

public boolean remove(Object key,
 Object value)

Throws UnsupportedOperationException.

Specified by:

remove in interface Map<K,V>

Specified by:

remove in interface MultiMap<K,V>

add

public boolean add(K key,
 V value)

Throws UnsupportedOperationException.

Specified by:

add in interface MultiMap<K,V>

Returns:

true if this mapping changed as a result of the call

addAll

public boolean addAll(K key,
 Collection<? extends V> values)

Throws UnsupportedOperationException.

Specified by:

addAll in interface MultiMap<K,V>

Returns:

true if this mapping changed as a result of the call

addAll

public boolean addAll(MultiMap<? extends K,? extends V> mm)

Throws UnsupportedOperationException.

Specified by:

addAll in interface MultiMap<K,V>

retainAll

public boolean retainAll(K key,
 Collection<?> values)

Throws UnsupportedOperationException.

Specified by:

retainAll in interface MultiMap<K,V>

Returns:

true if this mapping changed as a result of the call

removeAll

public boolean removeAll(K key,
 Collection<?> values)

Throws UnsupportedOperationException.

Specified by:

removeAll in interface MultiMap<K,V>

Returns:

true if this mapping changed as a result of the call