Top Description Fields Constructors Methods
javassist.util.proxy

public Class FactoryHelper

extends Object
Class Inheritance
Imports
java.io.BufferedOutputStream, .ByteArrayOutputStream, .DataOutputStream, .File, .FileOutputStream, .IOException, java.security.ProtectionDomain, javassist.CannotCompileException, javassist.bytecode.ClassFile
A helper class for implementing ProxyFactory. The users of ProxyFactory do not have to see this class.
See Also
ProxyFactory

Field Summary

Modifier and TypeField and Description
public static final int[]
dataSize

The data size of primitive types.

public static final Class<?>[]
primitiveTypes

Class objects representing primitive types.

public static final String[]
unwarpMethods

The names of methods for obtaining a primitive value from a wrapper object.

public static final String[]
unwrapDesc

The descriptors of the unwrapping methods contained in unwrapMethods.

public static final String[]
wrapperDesc

The descriptors of the constructors of wrapper classes.

public static final String[]
wrapperTypes

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

Constructor Summary

AccessConstructor and Description
public
FactoryHelper()

Method Summary

Modifier and TypeMethod and Description
private static byte[]
toBytecode(ClassFile cf)

public static Class<?>
toClass(ClassFile cf, ClassLoader loader)
Deprecated

Loads a class file by a given class loader.

public static Class<?>
toClass(ClassFile cf, ClassLoader
The class loader. It can be null if neighbor is not null.
loader, ProtectionDomain
if it is null, a default domain is used.
domain)
Deprecated

Loads a class file by a given class loader.

public static Class<?>
toClass(ClassFile cf, Class<?>
a class belonging to the same package that the loaded class belongs to. It can be null.
neighbor, ClassLoader
The class loader. It can be null if neighbor is not null.
loader, ProtectionDomain
if it is null, a default domain is used.
domain)

Loads a class file by a given class loader.

public static Class<?>
toClass(ClassFile cf, MethodHandles.Lookup
used to define the class.
lookup)

Loads a class file by a given lookup.

public static final int
typeIndex(Class<?> type)

Returns an index for accessing arrays in this class.

public static void
writeFile(ClassFile cf, String directoryName)

Writes a class file.

private static void
writeFile0(ClassFile cf, String directoryName)

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

dataSizeback to summary
public static final int[] dataSize

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

primitiveTypesback to summary
public static final Class<?>[] primitiveTypes

Class objects representing primitive types.

unwarpMethodsback to summary
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.

unwrapDescback to summary
public static final String[] unwrapDesc

The descriptors of the unwrapping methods contained in unwrapMethods.

wrapperDescback to summary
public static final String[] wrapperDesc

The descriptors of the constructors of wrapper classes.

wrapperTypesback to summary
public static final String[] wrapperTypes

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

Constructor Detail

FactoryHelperback to summary
public FactoryHelper()

Method Detail

toBytecodeback to summary
private static byte[] toBytecode(ClassFile cf) throws IOException
toClassback to summary
public static Class<?> toClass(ClassFile cf, ClassLoader loader) throws CannotCompileException

Deprecated

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 signed jar file.

See Also
toClass(ClassFile, Class, ClassLoader, ProtectionDomain)
toClassback to summary
public static Class<?> toClass(ClassFile cf, ClassLoader loader, ProtectionDomain domain) throws CannotCompileException

Deprecated

Loads a class file by a given class loader.

Parameters
loader:ClassLoader

The class loader. It can be null if neighbor is not null.

domain:ProtectionDomain

if it is null, a default domain is used.

Since
3.3
See Also
toClass(ClassFile, Class, ClassLoader, ProtectionDomain)
toClassback to summary
public static Class<?> toClass(ClassFile cf, Class<?> neighbor, ClassLoader loader, ProtectionDomain domain) throws CannotCompileException

Loads a class file by a given class loader.

Parameters
neighbor:Class<?>

a class belonging to the same package that the loaded class belongs to. It can be null.

loader:ClassLoader

The class loader. It can be null if neighbor is not null.

domain:ProtectionDomain

if it is null, a default domain is used.

Since
3.3
toClassback to summary
public static Class<?> toClass(ClassFile cf, MethodHandles.Lookup lookup) throws CannotCompileException

Loads a class file by a given lookup.

Parameters
lookup:MethodHandles.Lookup

used to define the class.

Since
3.24
typeIndexback to summary
public static final int typeIndex(Class<?> type)

Returns an index for accessing arrays in this class.

Exceptions
RuntimeException:
if a given type is not a primitive type.
writeFileback to summary
public static void writeFile(ClassFile cf, String directoryName) throws CannotCompileException

Writes a class file.

writeFile0back to summary
private static void writeFile0(ClassFile cf, String directoryName) throws CannotCompileException, IOException