Package io.foldright.inspectablewrappers.utils

Class AttachableDelegate<K,V>

java.lang.Object

io.foldright.inspectablewrappers.utils.AttachableDelegate<K,V>

All Implemented Interfaces:

Attachable<K,V>

public class AttachableDelegate<K,V>
extends Object
implements Attachable<K,V>

A simple Attachable delegate implementation.

Note:
As the attachments are stored in hash map(threadsafe ConcurrentHashMap), the implementation of the key type must meet the requirements of the hash map, which means that a stable hash code and the ability to compare equality using equals() must be implemented.

Author:

Jerry Lee (oldratlee at gmail dot com), Yang Fang (snoop dot fy at gmail dot com), Zava Xu (zava dot kid at gmail dot com)

See Also:

• Attachable

Constructor Summary

Constructors

Constructor	Description
AttachableDelegate()

Method Summary

Modifier and Type	Method	Description
V	getAttachment_(K key)	Gets the attachment value for the given key.
void	setAttachment_(K key, V value)	Sets an attachment.

Methods inherited from class java.lang.Object

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

Constructor Details

AttachableDelegate

public AttachableDelegate()

Method Details

setAttachment_

public void setAttachment_(@NonNull
 K key,
 @NonNull
 V value)

Sets an attachment.

Specified by:

setAttachment_ in interface Attachable<K,V>

Parameters:

key - the attachment key

value - the attachment value

Throws:

NullPointerException - if any arguments is null

getAttachment_

@Nullable
public V getAttachment_(@NonNull
 K key)

Gets the attachment value for the given key.

Specified by:

getAttachment_ in interface Attachable<K,V>

Parameters:

key - the attachment key

Returns:

return the attachment value, or null if contains no attachment for the key

Throws:

NullPointerException - if key argument is null

ClassCastException - if the return value is not type <V>

See Also:

• Inspector.getAttachmentFromWrapperChain(Object, Object)