Package net.bytebuddy.dynamic.loading

Class ClassInjector.UsingLookup

java.lang.Object

net.bytebuddy.dynamic.loading.ClassInjector.AbstractBase

net.bytebuddy.dynamic.loading.ClassInjector.UsingLookup

All Implemented Interfaces:

ClassInjector

Enclosing interface:

ClassInjector

@Enhance
public static class ClassInjector.UsingLookup
extends ClassInjector.AbstractBase

A class injector that uses a java.lang.invoke.MethodHandles$Lookup object for defining a class.

Important: This functionality is only available starting from Java 9.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static interface	ClassInjector.UsingLookup.Dispatcher	A dispatcher for interacting with a method handle lookup.

Nested classes/interfaces inherited from interface net.bytebuddy.dynamic.loading.ClassInjector

ClassInjector.AbstractBase, ClassInjector.UsingInstrumentation, ClassInjector.UsingLookup, ClassInjector.UsingReflection, ClassInjector.UsingUnsafe

Field Summary

Fields

Modifier and Type	Field	Description
private static ClassInjector.UsingLookup.Dispatcher	DISPATCHER	The dispatcher to interacting with method handles.
private java.lang.Object	lookup	The java.lang.invoke.MethodHandles$Lookup to use.
private static int	PACKAGE_LOOKUP	Indicates a lookup instance's package lookup mode.

Fields inherited from interface net.bytebuddy.dynamic.loading.ClassInjector

ALLOW_EXISTING_TYPES, SUPPRESS_ACCESS_CHECKS

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	UsingLookup(java.lang.Object lookup)	Creates a new class injector using a lookup instance.

Method Summary

Modifier and Type	Method	Description
ClassInjector.UsingLookup	in(java.lang.Class<?> type)	Resolves this injector to use the supplied type's scope.
java.util.Map<java.lang.String,java.lang.Class<?>>	injectRaw(java.util.Map<? extends java.lang.String,byte[]> types)	Injects the given types into the represented class loader using a mapping from name to binary representation.
boolean	isAlive()	Indicates if this class injector is available on the current VM.
static boolean	isAvailable()	Checks if the current VM is capable of defining classes using a method handle lookup.
java.lang.Class<?>	lookupType()	Returns the lookup type this injector is based upon.
static ClassInjector.UsingLookup	of(java.lang.Object lookup)	Creates class injector that defines a class using a method handle lookup.

Methods inherited from class net.bytebuddy.dynamic.loading.ClassInjector.AbstractBase

inject

Methods inherited from class java.lang.Object

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

Field Detail

DISPATCHER

private static final ClassInjector.UsingLookup.Dispatcher DISPATCHER

The dispatcher to interacting with method handles.

PACKAGE_LOOKUP

private static final int PACKAGE_LOOKUP

Indicates a lookup instance's package lookup mode.

See Also:

Constant Field Values

lookup

private final java.lang.Object lookup

The java.lang.invoke.MethodHandles$Lookup to use.

Constructor Detail

UsingLookup

protected UsingLookup(java.lang.Object lookup)

Creates a new class injector using a lookup instance.

Parameters:

lookup - The java.lang.invoke.MethodHandles$Lookup instance to use.

Method Detail

of

public static ClassInjector.UsingLookup of(java.lang.Object lookup)

Creates class injector that defines a class using a method handle lookup.

Parameters:

lookup - The java.lang.invoke.MethodHandles$Lookup instance to use.

Returns:

An appropriate class injector.

lookupType

public java.lang.Class<?> lookupType()

Returns the lookup type this injector is based upon.

Returns:

The lookup type.

in

public ClassInjector.UsingLookup in(java.lang.Class<?> type)

Resolves this injector to use the supplied type's scope.

Parameters:

type - The type to resolve the access scope for.

Returns:

An new injector with the specified scope.

isAlive

public boolean isAlive()

Indicates if this class injector is available on the current VM.

Returns:

true if this injector is available on the current VM.

injectRaw

public java.util.Map<java.lang.String,java.lang.Class<?>> injectRaw(java.util.Map<? extends java.lang.String,byte[]> types)

Injects the given types into the represented class loader using a mapping from name to binary representation.

Parameters:

types - The types to load via injection.

Returns:

The loaded types that were passed as arguments.

isAvailable

public static boolean isAvailable()

Checks if the current VM is capable of defining classes using a method handle lookup.

Returns:

true if the current VM is capable of defining classes using a lookup.