Package eu.bandm.tools.umod.runtime

Class MapProxy<D,R>

java.lang.Object

eu.bandm.tools.umod.runtime.MapProxy<D,R>

All Implemented Interfaces:

Serializable, Map<D,R>

Direct Known Subclasses:

CheckedMap_D, CheckedMap_R, CheckedMap_RD

public class MapProxy<D,R>
extends Object
implements Map<D,R>, Serializable

Implements a map by delegation to some peer object from a predefined java runtime class. The kind of implementation (hash map or tree map) can be selected by a parameter to the constructor.

Is used for checked maps, therefore the "put" methods (etc.) are implemented in the sub-classes and treated here as "abstract".

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	MapProxy.CheckedMapEntry<A,B>
protected static class	MapProxy.CheckedMapEntryIterator<A,B>
protected static class	MapProxy.CheckedMapEntrySet<A,B>	putting null as a value (not a key) must also be prevented on the folloing chain: CheckedMap -> entrySet() -> CheckedMapEntrySet -> iterator() -> CheckedMapEntryIterator -> next() -> CheckedMapEntry
static enum	MapProxy.implementations

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

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<D,R>	peer

Constructor Summary

Constructors

Constructor	Description
MapProxy()
MapProxy(MapProxy.implementations implementation)
MapProxy(Map<D,R> peer)

Method Summary

Modifier and Type	Method	Description
SortedMap<D,R>	asSorted()	Returns a sorted, unmodifiable view IFF the backing peer is a sorted map.
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<D,R>>	entrySet()	Will be overridden for R = range checked maps.
boolean	equals(Object o)
R	get(Object key)
int	hashCode()
boolean	isEmpty()
Set<D>	keySet()
R	put(D key, R value)	Is overridden by subclass to make non-null checks.
void	putAll(Map<? extends D,? extends R> t)	Is overridden by subclass to make non-null checks.
R	remove(Object key)
int	size()
String	toString()
Collection<R>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Field Details

peer

protected Map<D,R> peer

Constructor Details

MapProxy

public MapProxy()

MapProxy

public MapProxy(MapProxy.implementations implementation)

MapProxy

public MapProxy(Map<D,R> peer)

Method Details

toString

public String toString()

Overrides:

toString in class Object

asSorted

public SortedMap<D,R> asSorted()

Returns a sorted, unmodifiable view IFF the backing peer is a sorted map. This is currently only the case when the implementstion has been explicitly seelected as tree on creation.

Throws:

UnsupportedOperationException - if the backing peer does not offer a sorted view.

clear

public void clear()

Specified by:

clear in interface Map<D,R>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<D,R>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<D,R>

entrySet

public Set<Map.Entry<D,R>> entrySet()

Will be overridden for R = range checked maps. java doc says "[Map.entrySet()} does not support the add or addAll operations"

Specified by:

entrySet in interface Map<D,R>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<D,R>

Overrides:

equals in class Object

get

public R get(Object key)

Specified by:

get in interface Map<D,R>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<D,R>

Overrides:

hashCode in class Object

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<D,R>

keySet

public Set<D> keySet()

Specified by:

keySet in interface Map<D,R>

put

public R put(D key,
 R value)

Is overridden by subclass to make non-null checks.

Specified by:

put in interface Map<D,R>

putAll

public void putAll(Map<? extends D,? extends R> t)

Is overridden by subclass to make non-null checks.

Specified by:

putAll in interface Map<D,R>

remove

public R remove(Object key)

Specified by:

remove in interface Map<D,R>

size

public int size()

Specified by:

size in interface Map<D,R>

values

public Collection<R> values()

Specified by:

values in interface Map<D,R>