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

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
ClassLoader	getClassLoader() Returns the class loader that governs the strong referenceability of this class map.

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.

getClassLoader

public ClassLoader getClassLoader()

Returns the class loader that governs the strong referenceability of this class map.

Returns:

the class loader that governs the strong referenceability of this class map.

get

public T get(Class<?> clazz)

Returns the value associated with the class

Parameters:

clazz - the class

Returns:

the value associated with the class