jhelp.util.classLoader

Class EmptyClassLoader

java.lang.Object

java.lang.ClassLoader

jhelp.util.classLoader.EmptyClassLoader

public class EmptyClassLoader
extends java.lang.ClassLoader

Class loader that make loaded class empty.
It creates dynamically empty code and compile it for be able load it

Last modification : 5 juin 2010
Version 0.0.0

Author:

JHelp

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.WeakHashMap<java.lang.String,java.lang.ref.SoftReference<java.lang.Class<?>>>	classes Already loaded classes
private java.io.File	directory Directory where class are compiled
private JHelpJarClassLoader	jarClassLoader Base jar class loader
private java.util.HashSet<java.lang.String>	onCreation On creation class for avoid infinite loop
private static int	tempFileIndex Next temporary file index

Constructor Summary

Constructors

Constructor and Description
EmptyClassLoader(java.util.jar.JarFile... jarsToMock) Constructs EmptyClassLoader

Method Summary

Methods

Modifier and Type	Method and Description
private void	addImport(java.lang.String base, java.util.HashSet<java.lang.String> set, java.lang.String name) Add import in list
private void	appendContent(boolean internal, java.lang.String decal, java.lang.String name, java.lang.StringBuilder stringBuilder, java.lang.Class<?> classInJar, java.lang.String simpleName) Append content of class to current code
private void	appendInternal(java.lang.String decal, java.lang.StringBuilder stringBuilder, java.lang.String name) Append internal class inside a class
private void	compileClass(java.lang.String name, java.util.HashSet<Compiler.NameCode> needCompile) Compile a list of class
private static java.lang.String	createFile() Create temporary file.
private void	fillImports(java.lang.String base, java.lang.String name, java.util.HashSet<java.lang.String> imports, java.lang.Class<?> classInJar) Fill imports
private java.lang.Class<?>	getAlreadyKnown(java.lang.String name) Get class if already known
private java.lang.String	getArrayLevel(java.lang.Class<?> claz) Array level of a class
private java.lang.Class<?>	getRootType(java.lang.Class<?> claz) Root type of a class
protected java.lang.Class<?>	loadClass(java.lang.String name, boolean resolve) Load a class
private java.lang.Class<?>	loadFromCompiledFile(java.lang.String name, boolean resolve) Load class from a already compiled file

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, 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

tempFileIndex

private static int tempFileIndex

Next temporary file index

classes

private final java.util.WeakHashMap<java.lang.String,java.lang.ref.SoftReference<java.lang.Class<?>>> classes

Already loaded classes

directory

private java.io.File directory

Directory where class are compiled

jarClassLoader

private final JHelpJarClassLoader jarClassLoader

Base jar class loader

onCreation

private final java.util.HashSet<java.lang.String> onCreation

On creation class for avoid infinite loop

Constructor Detail

EmptyClassLoader

public EmptyClassLoader(java.util.jar.JarFile... jarsToMock)

Constructs EmptyClassLoader

Parameters:

jarsToMock - Jars to see as empty

Method Detail

createFile

private static java.lang.String createFile()

Create temporary file. Use for simulate reference to a valid file

Returns:

XML value of file name

addImport

private void addImport(java.lang.String base,
             java.util.HashSet<java.lang.String> set,
             java.lang.String name)

Add import in list

Parameters:

base - Base class name

set - List of import

name - Class name

appendContent

private void appendContent(boolean internal,
                 java.lang.String decal,
                 java.lang.String name,
                 java.lang.StringBuilder stringBuilder,
                 java.lang.Class<?> classInJar,
                 java.lang.String simpleName)
                    throws java.lang.ClassNotFoundException

Append content of class to current code

Parameters:

internal - Indicates if class is internal

decal - Start of each line

name - Class name

stringBuilder - Where append

classInJar - Class to append

simpleName - Short name of class

Throws:

java.lang.ClassNotFoundException - If class not found

appendInternal

private void appendInternal(java.lang.String decal,
                  java.lang.StringBuilder stringBuilder,
                  java.lang.String name)
                     throws java.lang.ClassNotFoundException

Append internal class inside a class

Parameters:

decal - Add start of each line

stringBuilder - Where append

name - Class name

Throws:

java.lang.ClassNotFoundException - If class not found

compileClass

private void compileClass(java.lang.String name,
                java.util.HashSet<Compiler.NameCode> needCompile)
                   throws java.lang.ClassNotFoundException

Compile a list of class

Parameters:

name - Class to compile

needCompile - Need to compile list

Throws:

java.lang.ClassNotFoundException - If class not found

fillImports

private void fillImports(java.lang.String base,
               java.lang.String name,
               java.util.HashSet<java.lang.String> imports,
               java.lang.Class<?> classInJar)
                  throws java.lang.ClassNotFoundException

Fill imports

Parameters:

base - Base name

name - Class name

imports - List import to fill

classInJar - Class

Throws:

java.lang.ClassNotFoundException - if class not found

getAlreadyKnown

private java.lang.Class<?> getAlreadyKnown(java.lang.String name)

Get class if already known

Parameters:

name - Class name

Returns:

The class or null

getArrayLevel

private java.lang.String getArrayLevel(java.lang.Class<?> claz)

Array level of a class

Parameters:

claz - Class

Returns:

Array level

getRootType

private java.lang.Class<?> getRootType(java.lang.Class<?> claz)

Root type of a class

Parameters:

claz - Class

Returns:

Root type or null for void

loadFromCompiledFile

private java.lang.Class<?> loadFromCompiledFile(java.lang.String name,
                                      boolean resolve)

Load class from a already compiled file

Parameters:

name - File name

resolve - Indicates if need to resolve

Returns:

Loaded class or null

loadClass

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

Load a class

Overrides:

loadClass in class java.lang.ClassLoader

Parameters:

name - Class name

resolve - Indicates if class need to be resolved

Returns:

Loaded class

Throws:

java.lang.ClassNotFoundException - If class not found

See Also:

ClassLoader.loadClass(java.lang.String, boolean)