org.dynalang.dynalink.support

Class ClassMap<T>

java.lang.Object

org.dynalang.dynalink.support.ClassMap<T>

Type Parameters:

T - the type of the values in the map

public abstract class ClassMap<T>
extends Object

A dual map that can either strongly or weakly reference a given class depending on whether the class is visible from a class loader or not.

Author:

Attila Szegedi

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ClassMap(ClassLoader classLoader) Creates a new class map.

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract T	computeValue(Class<?> clazz) Compute the value associated with the given class.
T	get(Class<?> clazz) Returns the value associated with the class

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassMap

protected ClassMap(ClassLoader classLoader)

Creates a new class map. It will use strong references for all keys and values where the key is a class visible from the class loader, and will use weak keys and soft values for all other classes.

Parameters:

classLoader - the classloader that determines strong referenceability.

Method Detail

computeValue

protected abstract T computeValue(Class<?> clazz)

Compute the value associated with the given class. It is possible that the method will be invoked several times (or even concurrently) for the same class parameter.

Parameters:

clazz - the class to compute the value for

Returns:

the return value. Must not be null.

get

public T get(Class<?> clazz)

Returns the value associated with the class

Parameters:

clazz - the class

Returns:

the value associated with the class