Module org.meeuw.configuration

Package org.meeuw.configuration

Class FixedSizeMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

org.meeuw.configuration.FixedSizeMap<K,V>

All Implemented Interfaces:

Map<K,V>

public class FixedSizeMap<K,V>
extends AbstractMap<K,V>

A simple Map implementation which allows for changing mappings, but not adding or deleting them.

This is used when representing configurations.

Since:

0.4

Author:

Michiel Meeuwissen

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

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

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

Constructor Summary

Constructors

Constructor	Description
FixedSizeMap(Map<K,V> wrapped)	Instantiate this map with a given map of keys and values.
FixedSizeMap(K... keys)	Instantiate this map with the needed keys.

Method Summary

Modifier and Type	Method	Description
Set<Map.Entry<K,V>>	entrySet()
V	get(Object k)
static <K, V> FixedSizeMap<K,V>	of(Object... keysAndValues)	Creates a FixedSizeMap and intializes all values.
V	put(K k, V v)

Methods inherited from class java.util.AbstractMap

clear, clone, containsKey, containsValue, equals, hashCode, isEmpty, keySet, putAll, remove, size, toString, values

Methods inherited from class java.lang.Object

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

Constructor Details

FixedSizeMap

public FixedSizeMap(Map<K,V> wrapped)

Instantiate this map with a given map of keys and values. This will be wrapped, and FixedSizeMap will disallow putting keys which are not already in it (or removing keys from it)

FixedSizeMap

@SafeVarargs
public FixedSizeMap(K... keys)

Instantiate this map with the needed keys. All values will initially be null

Method Details

of

public static <K,
V> FixedSizeMap<K,V> of(Object... keysAndValues)

Creates a FixedSizeMap and intializes all values.

Parameters:

keysAndValues - And even list of objects. Even entries are keys, odd entries are values.

Throws:

ClassCastException - If one of the objects it not of the correct type

IndexOutOfBoundsException - If the number of parameters is not even.

put

public V put(K k,
 V v)

Specified by:

put in interface Map<K,V>

Overrides:

put in class AbstractMap<K,V>

get

public V get(Object k)

Specified by:

get in interface Map<K,V>

Overrides:

get in class AbstractMap<K,V>

entrySet

public Set<Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in class AbstractMap<K,V>