javassist.util.proxy
Class FactoryHelper

java.lang.Object
  javassist.util.proxy.FactoryHelper

public class FactoryHelper
extends Object

A helper class for implementing ProxyFactory. The users of ProxyFactory do not have to see this class.

See Also:

ProxyFactory

Field Summary

static int[]	dataSize The data size of primitive types.
static Class[]	primitiveTypes Class objects representing primitive types.
static String[]	unwarpMethods The names of methods for obtaining a primitive value from a wrapper object.
static String[]	unwrapDesc The descriptors of the unwrapping methods contained in unwrapMethods.
static String[]	wrapperDesc The descriptors of the constructors of wrapper classes.
static String[]	wrapperTypes The fully-qualified names of wrapper classes for primitive types.

Constructor Summary

FactoryHelper()

Method Summary

static Class	toClass(ClassFile cf, ClassLoader loader) Loads a class file by a given class loader.
static Class	toClass(ClassFile cf, ClassLoader loader, ProtectionDomain domain) Loads a class file by a given class loader.
static int	typeIndex(Class type) Returns an index for accessing arrays in this class.
static void	writeFile(ClassFile cf, String directoryName) Writes a class file.

Methods inherited from class java.lang.Object

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

Field Detail

primitiveTypes

public static final Class[] primitiveTypes

Class objects representing primitive types.

wrapperTypes

public static final String[] wrapperTypes

The fully-qualified names of wrapper classes for primitive types.

wrapperDesc

public static final String[] wrapperDesc

The descriptors of the constructors of wrapper classes.

unwarpMethods

public static final String[] unwarpMethods

The names of methods for obtaining a primitive value from a wrapper object. For example, intValue() is such a method for obtaining an integer value from a java.lang.Integer object.

unwrapDesc

public static final String[] unwrapDesc

The descriptors of the unwrapping methods contained in unwrapMethods.

dataSize

public static final int[] dataSize

The data size of primitive types. long and double are 2; the others are 1.

Constructor Detail

FactoryHelper

public FactoryHelper()

Method Detail

typeIndex

public static final int typeIndex(Class type)

Returns an index for accessing arrays in this class.

Throws:

RuntimeException - if a given type is not a primitive type.

toClass

public static Class toClass(ClassFile cf,
                            ClassLoader loader)
                     throws CannotCompileException

Loads a class file by a given class loader. This method uses a default protection domain for the class but it may not work with a security manager or a sigend jar file.

Throws:

CannotCompileException

See Also:

toClass(ClassFile,ClassLoader,ProtectionDomain)

toClass

public static Class toClass(ClassFile cf,
                            ClassLoader loader,
                            ProtectionDomain domain)
                     throws CannotCompileException

Loads a class file by a given class loader.

Parameters:

domain - if it is null, a default domain is used.

Throws:

CannotCompileException

Since:

3.3

writeFile

public static void writeFile(ClassFile cf,
                             String directoryName)
                      throws CannotCompileException

Writes a class file.

Throws:

CannotCompileException