org.codehaus.janino
Class JavaSourceClassLoader

java.lang.Object
  java.lang.ClassLoader
      org.codehaus.janino.JavaSourceClassLoader

public class JavaSourceClassLoader

extends ClassLoader

A ClassLoader that, unlike usual ClassLoaders, does not load byte code, but reads Java^TM source code and then scans, parses, compiles and loads it into the virtual machine.

Nested Class Summary

static interface

JavaSourceClassLoader.ProtectionDomainFactory

Constructor Summary

JavaSourceClassLoader(ClassLoader parentClassLoader, File[] optionalSourcePath, String optionalCharacterEncoding, DebuggingInformation debuggingInformation)
Set up a JavaSourceClassLoader that finds Java^TM source code in a file that resides in either of the directories specified by the given source path.

JavaSourceClassLoader(ClassLoader parentClassLoader, ResourceFinder sourceFinder, String optionalCharacterEncoding, DebuggingInformation debuggingInformation)
Set up a JavaSourceClassLoader that finds Java^TM source code through a given ResourceFinder.

Method Summary

protected Class	findClass(String name) Implementation of ClassLoader.findClass(String).
static void	main(String[] args) Read JavaTM source code for a given class name, scan, parse, compile and load it into the virtual machine, and invoke its "main()" method.
void	setProtectionDomainFactory(JavaSourceClassLoader.ProtectionDomainFactory protectionDomainFactory)

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaSourceClassLoader

public JavaSourceClassLoader(ClassLoader parentClassLoader,
                             File[] optionalSourcePath,
                             String optionalCharacterEncoding,
                             DebuggingInformation debuggingInformation)

Set up a JavaSourceClassLoader that finds Java^TM source code in a file that resides in either of the directories specified by the given source path.

Parameters:

parentClassLoader - See ClassLoader

optionalSourcePath - A collection of directories that are searched for Java^TM source files in the given order

optionalCharacterEncoding - The encoding of the Java^TM source files (null for platform default encoding)

debuggingInformation - What kind of debugging information to generate

JavaSourceClassLoader

public JavaSourceClassLoader(ClassLoader parentClassLoader,
                             ResourceFinder sourceFinder,
                             String optionalCharacterEncoding,
                             DebuggingInformation debuggingInformation)

Set up a JavaSourceClassLoader that finds Java^TM source code through a given ResourceFinder.

Parameters:

parentClassLoader - See ClassLoader

sourceFinder - Used to locate additional source files

optionalCharacterEncoding - The encoding of the Java^TM source files (null for platform default encoding)

debuggingInformation - What kind of debugging information to generate

Method Detail

main

public static void main(String[] args)

Read Java^TM source code for a given class name, scan, parse, compile and load it into the virtual machine, and invoke its "main()" method.

Usage is as follows:

   java [ java-option ] org.codehaus.janino.JavaSourceClassLoader [ option ] ... class-name [ arg ] ... 
     java-option Any valid option for the Java Virtual Machine (e.g. "-classpath colon-separated-list-of-class-directories") 
     option:
       -sourcepath colon-separated-list-of-source-directories 
       -encoding character-encoding
 

findClass

protected Class findClass(String name)
                   throws ClassNotFoundException

Implementation of ClassLoader.findClass(String).

Throws:

ClassNotFoundException

TunnelException - wraps a Scanner.ScanException

TunnelException - wraps a Parser.ParseException

TunnelException - wraps a CompileException

TunnelException - wraps a IOException

setProtectionDomainFactory

public void setProtectionDomainFactory(JavaSourceClassLoader.ProtectionDomainFactory protectionDomainFactory)