Package com.helix.core.classloader

Class RuleClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

com.helix.core.classloader.RuleClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class RuleClassLoader
extends URLClassLoader
implements AutoCloseable

Custom URLClassLoader for dynamically defining and executing compiled rule bytecode.

Constructor Summary

Constructors

Constructor	Description
RuleClassLoader(String loaderId, ClassLoader parent)
RuleClassLoader(String loaderId, ClassLoader parent, ClassLoaderMetrics metrics)

Method Summary

Modifier and Type	Method	Description
void	close()
Class<?>	defineRule(String className, byte[] byteCode)	Defines a new class from raw bytecode.
Map<String,Class<?>>	getLoadedClasses()
String	getLoaderId()
ClassLoaderMetrics	getMetrics()
boolean	isClosed()

Methods inherited from class java.net.URLClassLoader

addURL, 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, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, 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

RuleClassLoader

public RuleClassLoader(String loaderId,
 ClassLoader parent)

RuleClassLoader

public RuleClassLoader(String loaderId,
 ClassLoader parent,
 ClassLoaderMetrics metrics)

Method Details

getLoaderId

public String getLoaderId()

defineRule

public Class<?> defineRule(String className,
 byte[] byteCode)
                    throws ClassLoadingException

Defines a new class from raw bytecode.

Parameters:

className - FQCN of the class

byteCode - raw byte array of class bytecode

Returns:

loaded Class object

Throws:

ClassLoadingException - if defining class fails or loader is closed

getLoadedClasses

public Map<String,Class<?>> getLoadedClasses()

isClosed

public boolean isClosed()

getMetrics

public ClassLoaderMetrics getMetrics()

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class URLClassLoader