Package nz.org.riskscape.engine.function

Class FunctionClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

nz.org.riskscape.engine.function.FunctionClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class FunctionClassLoader
extends URLClassLoader

Each JavaFunction may have classes loaded from its own FunctionClassLoader.

These should inherit from the Engine's class loader, so that the functions can access the core classes.

TODO User-defined functions are in this form a sort of Riskscape-sanctioned malware vector. There is a ticket, https://bugs.riskscape.org.nz/issues/434, that has a bunch of mitigations for making this less ropey.

Constructor Summary

Constructors

Constructor	Description
FunctionClassLoader(URL[] urls, ClassLoader parent)	Construtor

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
URL	getResource(String name)
InputStream	getResourceAsStream(String name)
Enumeration<URL>	getResources(String name)
int	hashCode()
protected Class<?>	loadClass(String name, boolean resolve)

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, findResources, getPermissions, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Details

FunctionClassLoader

public FunctionClassLoader(URL[] urls,
 ClassLoader parent)

Construtor

Parameters:

urls - Array of urls with own libraries and all exported libraries of plugins that are required to this plugin

parent -

Method Details

loadClass

protected Class<?> loadClass(String name,
 boolean resolve)
                      throws ClassNotFoundException

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

getResource

public URL getResource(String name)

Overrides:

getResource in class ClassLoader

getResources

public Enumeration<URL> getResources(String name)
                              throws IOException

Overrides:

getResources in class ClassLoader

Throws:

IOException

getResourceAsStream

public InputStream getResourceAsStream(String name)

Overrides:

getResourceAsStream in class URLClassLoader

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object