Package org.openrewrite.java

Class JavaUnrestrictedClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.openrewrite.java.JavaUnrestrictedClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class JavaUnrestrictedClassLoader
extends URLClassLoader

Rewrite's JavaParser is reliant on java's compiler internal classes that are now encapsulated within Java's module system. Starting in Java 17, the JVM now enforces strong encapsulation of these internal classes and default behavior is to throw a security exception when attempting to use these internal classes. This classloader circumvents these security restrictions by isolating Rewrite's Java 17 parser implementation classes and then loading any of the internal classes directly from the .jmod files.

NOTE: Any classes in the package "org.openrewrite.java.isolated" will be loaded into this isolated classloader.

Constructor Summary

Constructors

Constructor	Description
JavaUnrestrictedClassLoader(ClassLoader parentClassloader)
JavaUnrestrictedClassLoader(ClassLoader parentClassloader, List<URL> jars)

Method Summary

Modifier and Type	Method	Description
@Nullable URL	getResource(String name)
Enumeration<URL>	getResources(String name)
Class<?>	loadClass(String name)

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, findResources, getPermissions, getResourceAsStream, 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, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JavaUnrestrictedClassLoader

public JavaUnrestrictedClassLoader(ClassLoader parentClassloader)

JavaUnrestrictedClassLoader

public JavaUnrestrictedClassLoader(ClassLoader parentClassloader,
 List<URL> jars)

Method Details

loadClass

public Class<?> loadClass(String name)
                   throws ClassNotFoundException

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

getResources

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

Overrides:

getResources in class ClassLoader

Throws:

IOException

getResource

public @Nullable URL getResource(String name)

Overrides:

getResource in class ClassLoader