org.vertx.java.platform.impl

Class ModuleClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.vertx.java.platform.impl.ModuleClassLoader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class ModuleClassLoader
extends java.net.URLClassLoader

Each module (not module instance) is assigned it's own ModuleClassLoader. A ModuleClassLoader instance can reference zero or more other ModuleClassLoader instances. A ModuleClassLoader instance references another ModuleClassLoader instance if it deploys it or includes it. For each ModuleClassLoader there is a set of ModuleClassLoader instances obtained by walking through the references graph recursively and avoiding loops. This is obtained with the method getModuleGraph() For each context the Thread context classloader is set to the ModuleClassLoader that created the context. Consequently any class or resource loading that occurs from the same context will have the same set of modules visible to it, which will be the same as the set of modules visible to the ModuleClassLoader of the module that created it. We support two different load orders for modules - either loading with the platform loader first or loading with the module classloader first. This is configurable using the load-from-module-first module field.

Field Summary

Fields

Modifier and Type	Field and Description
java.lang.String	modID

Constructor Summary

Constructors

Constructor and Description
ModuleClassLoader(java.lang.String modID, java.lang.ClassLoader platformClassLoader, java.net.URL[] classpath, boolean loadFromModuleFirst)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	addReference(org.vertx.java.platform.impl.ModuleReference reference)
void	addURL(java.net.URL url)
void	close()
protected java.lang.Class<?>	doLoadClass(java.lang.String name)
java.net.URL	getResource(java.lang.String name)
java.io.InputStream	getResourceAsStream(java.lang.String name)
java.util.Enumeration<java.net.URL>	getResources(java.lang.String name)
protected java.lang.Class<?>	loadClass(java.lang.String name, boolean resolve)

Methods inherited from class java.net.URLClassLoader

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, findLibrary, findLoadedClass, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Field Detail

modID

public final java.lang.String modID

Constructor Detail

ModuleClassLoader

public ModuleClassLoader(java.lang.String modID,
                 java.lang.ClassLoader platformClassLoader,
                 java.net.URL[] classpath,
                 boolean loadFromModuleFirst)

Method Detail

addReference

public boolean addReference(org.vertx.java.platform.impl.ModuleReference reference)

close

public void close()

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.net.URLClassLoader

addURL

public void addURL(java.net.URL url)

Overrides:

addURL in class java.net.URLClassLoader

loadClass

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

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException

doLoadClass

protected java.lang.Class<?> doLoadClass(java.lang.String name)

getResource

public java.net.URL getResource(java.lang.String name)

Overrides:

getResource in class java.lang.ClassLoader

getResources

public java.util.Enumeration<java.net.URL> getResources(java.lang.String name)
                                                 throws java.io.IOException

Overrides:

getResources in class java.lang.ClassLoader

Throws:

java.io.IOException

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.String name)

Overrides:

getResourceAsStream in class java.net.URLClassLoader