Package com.github.javaparser.ast

Class DataKey<T>

java.lang.Object

com.github.javaparser.ast.DataKey<T>

Type Parameters:

T - The type of the object which is stored

public abstract class DataKey<T>
extends Object

A key to a piece of data associated with a Node at runtime. The key contains type information that can be used to check the type of any user data value for the key when the value is set. DataKey is abstract in order to force the creation of a subtype. That subtype is used to test for identity when looking for the user data because actual object identity would suffer from problems under serialization. So, the correct way to declare a DataKey is like this:

 
 public static final DataKey<Role> ROLE = new DataKey<Role>() { };
 
 

This code was taken from the Wicket project.

See Also:

Node.getData(DataKey)

Constructor Summary

Constructors

Constructor	Description
DataKey()

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Details

DataKey

public DataKey()

Method Details

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

See Also:

Object.equals(java.lang.Object)