wicket
Class MetaDataKey

java.lang.Object
  wicket.MetaDataKey

All Implemented Interfaces:

java.io.Serializable

public abstract class MetaDataKey
extends java.lang.Object
implements java.io.Serializable

A key to a piece of metadata associated with a Component at runtime. The key contains type information that can be used to check the type of any metadata value for the key when the value is set on the given Component. MetaDataKey is abstract in order to force the creation of a subtype. That subtype is used to test for identity when looking for the metadata because actual object identity would suffer from problems under serialization. So, the correct way to declare a MetaDataKey is like this: public static MetaDataKey ROLE = new MetaDataKey(Role.class) { }

Author:

Jonathan Locke

See Also:

Serialized Form

Constructor Summary

MetaDataKey(java.lang.Class type)
Constructor.

Method Summary

boolean

equals(java.lang.Object obj)

Methods inherited from class java.lang.Object

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

Constructor Detail

MetaDataKey

public MetaDataKey(java.lang.Class type)

Constructor.

Parameters:

type - The type of value stored under this key

Method Detail

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

See Also:

Object.equals(java.lang.Object)