cn.sucang.core.util.loader

Class HotCodeLoader

java.lang.Object

cn.sucang.core.util.loader.HotCodeLoader

public final class HotCodeLoader
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
HotCodeLoader()
HotCodeLoader(java.lang.ClassLoader parentClassLoader)
HotCodeLoader(java.lang.String compileClasspath, java.lang.ClassLoader parentClassLoader)

Method Summary

Modifier and Type	Method and Description
boolean	addSourceDir(java.io.File srcDir) Add a directory that contains the source of dynamic java code.
java.net.URL	getResource(java.lang.String resource) Get a resource from added source directories.
java.io.InputStream	getResourceAsStream(java.lang.String resource) Get a resource stream from added source directories.
java.lang.Class	loadClass(java.lang.String className) Returns the up-to-date dynamic class by name.
java.lang.Object	newProxyInstance(java.lang.Class interfaceClass, java.lang.String implClassName) Create a proxy instance that implements the specified access interface and delegates incoming invocations to the specified dynamic implementation.

Methods inherited from class java.lang.Object

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

Constructor Detail

HotCodeLoader

public HotCodeLoader()

HotCodeLoader

public HotCodeLoader(java.lang.ClassLoader parentClassLoader)

HotCodeLoader

public HotCodeLoader(java.lang.String compileClasspath,
                     java.lang.ClassLoader parentClassLoader)

Parameters:

compileClasspath - used to compile dynamic classes

parentClassLoader - the parent of the class loader that loads all the dynamic classes

Method Detail

addSourceDir

public boolean addSourceDir(java.io.File srcDir)

Add a directory that contains the source of dynamic java code.

Parameters:

srcDir -

Returns:

true if the add is successful

loadClass

public java.lang.Class loadClass(java.lang.String className)
                          throws java.lang.ClassNotFoundException

Returns the up-to-date dynamic class by name.

Parameters:

className -

Returns:

Throws:

java.lang.ClassNotFoundException - if source file not found or compilation error

getResource

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

Get a resource from added source directories.

Parameters:

resource -

Returns:

the resource URL, or null if resource not found

getResourceAsStream

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

Get a resource stream from added source directories.

Parameters:

resource -

Returns:

the resource stream, or null if resource not found

newProxyInstance

public java.lang.Object newProxyInstance(java.lang.Class interfaceClass,
                                         java.lang.String implClassName)
                                  throws java.lang.RuntimeException

Create a proxy instance that implements the specified access interface and delegates incoming invocations to the specified dynamic implementation. The dynamic implementation may change at run-time, and the proxy will always delegates to the up-to-date implementation.

Parameters:

interfaceClass - the access interface

implClassName - the backend dynamic implementation

Returns:

Throws:

java.lang.RuntimeException - if an instance cannot be created, because of class not found for example