Package org.springframework.binding.collection

Class StringKeyedMapAdapter<V>

java.lang.Object

org.springframework.binding.collection.StringKeyedMapAdapter<V>

All Implemented Interfaces:

Map<String,V>

Direct Known Subclasses:

HttpServletContextMap, HttpServletRequestMap, HttpServletRequestParameterMap, HttpSessionMap

public abstract class StringKeyedMapAdapter<V>
extends Object
implements Map<String,V>

Base class for map adapters whose keys are String values. Concrete classes need only implement the abstract hook methods defined by this class.

Author:

Keith Donald

Nested Class Summary

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

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

Constructor Summary

Constructors

Constructor	Description
StringKeyedMapAdapter()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<String,V>>	entrySet()
V	get(Object key)
protected abstract V	getAttribute(String key)	Hook method that needs to be implemented by concrete subclasses.
protected abstract Iterator<String>	getAttributeNames()	Hook method that needs to be implemented by concrete subclasses.
boolean	isEmpty()
Set<String>	keySet()
V	put(String key, V value)
void	putAll(Map<? extends String,? extends V> map)
V	remove(Object key)
protected abstract void	removeAttribute(String key)	Hook method that needs to be implemented by concrete subclasses.
protected abstract void	setAttribute(String key, V value)	Hook method that needs to be implemented by concrete subclasses.
int	size()
Collection<V>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

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

Constructor Details

StringKeyedMapAdapter

public StringKeyedMapAdapter()

Method Details

clear

public void clear()

Specified by:

clear in interface Map<String,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<String,V>

entrySet

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

Specified by:

entrySet in interface Map<String,V>

get

public V get(Object key)

Specified by:

get in interface Map<String,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<String,V>

keySet

public Set<String> keySet()

Specified by:

keySet in interface Map<String,V>

put

public V put(String key,
 V value)

Specified by:

put in interface Map<String,V>

putAll

public void putAll(Map<? extends String,? extends V> map)

Specified by:

putAll in interface Map<String,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<String,V>

size

public int size()

Specified by:

size in interface Map<String,V>

values

public Collection<V> values()

Specified by:

values in interface Map<String,V>

getAttribute

protected abstract V getAttribute(String key)

Hook method that needs to be implemented by concrete subclasses. Gets a value associated with a key.

Parameters:

key - the key to lookup

Returns:

the associated value, or null if none

setAttribute

protected abstract void setAttribute(String key,
 V value)

Hook method that needs to be implemented by concrete subclasses. Puts a key-value pair in the map, overwriting any possible earlier value associated with the same key.

Parameters:

key - the key to associate the value with

value - the value to associate with the key

removeAttribute

protected abstract void removeAttribute(String key)

Hook method that needs to be implemented by concrete subclasses. Removes a key and its associated value from the map.

Parameters:

key - the key to remove

getAttributeNames

protected abstract Iterator<String> getAttributeNames()

Hook method that needs to be implemented by concrete subclasses. Returns an enumeration listing all keys known to the map.

Returns:

the key enumeration