Package net.bytebuddy.dynamic.loading

Class ClassInjector.UsingReflection

java.lang.Object

net.bytebuddy.dynamic.loading.ClassInjector.AbstractBase

net.bytebuddy.dynamic.loading.ClassInjector.UsingReflection

All Implemented Interfaces:

ClassInjector

Enclosing interface:

ClassInjector

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

A class injector that uses reflective method calls.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static interface	ClassInjector.UsingReflection.Dispatcher	A dispatcher for accessing a ClassLoader reflectively.
protected static interface	ClassInjector.UsingReflection.System	A proxy of java.lang.System.

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

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

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.reflect.Method	CHECK_PERMISSION	The java.lang.SecurityManager#checkPermission method or null if not available.
private java.lang.ClassLoader	classLoader	The class loader into which the classes are to be injected.
private static ClassInjector.UsingReflection.Dispatcher.Initializable	DISPATCHER	The dispatcher to use for accessing a class loader via reflection.
private boolean	forbidExisting	Determines if an exception should be thrown when attempting to load a type that already exists.
private PackageDefinitionStrategy	packageDefinitionStrategy	The package definer to be queried for package definitions.
private java.security.ProtectionDomain	protectionDomain	The protection domain that is used when loading classes.
private static ClassInjector.UsingReflection.System	SYSTEM	A proxy for java.lang.System to access the security manager if available.

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

ALLOW_EXISTING_TYPES, SUPPRESS_ACCESS_CHECKS

Constructor Summary

Constructors

Constructor	Description
UsingReflection(java.lang.ClassLoader classLoader)	Creates a new injector for the given ClassLoader and a default ProtectionDomain and a trivial PackageDefinitionStrategy which does not trigger an error when discovering existent classes.
UsingReflection(java.lang.ClassLoader classLoader, java.security.ProtectionDomain protectionDomain)	Creates a new injector for the given ClassLoader and a default PackageDefinitionStrategy where the injection of existent classes does not trigger an error.
UsingReflection(java.lang.ClassLoader classLoader, java.security.ProtectionDomain protectionDomain, PackageDefinitionStrategy packageDefinitionStrategy, boolean forbidExisting)	Creates a new injector for the given ClassLoader and ProtectionDomain.

Method Summary

Modifier and Type	Method	Description
private static <T> T	doPrivileged(java.security.PrivilegedAction<T> action)	A proxy for java.security.AccessController#doPrivileged that is activated if available.
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()	Indicates if this class injection is available on the current VM.
static ClassInjector	ofSystemClassLoader()	Creates a class injector for the system class loader.

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.UsingReflection.Dispatcher.Initializable DISPATCHER

The dispatcher to use for accessing a class loader via reflection.

SYSTEM

private static final ClassInjector.UsingReflection.System SYSTEM

A proxy for java.lang.System to access the security manager if available.

CHECK_PERMISSION

private static final java.lang.reflect.Method CHECK_PERMISSION

The java.lang.SecurityManager#checkPermission method or null if not available.

classLoader

private final java.lang.ClassLoader classLoader

The class loader into which the classes are to be injected.

protectionDomain

@MaybeNull
@ValueHandling(REVERSE_NULLABILITY)
private final java.security.ProtectionDomain protectionDomain

The protection domain that is used when loading classes.

packageDefinitionStrategy

private final PackageDefinitionStrategy packageDefinitionStrategy

The package definer to be queried for package definitions.

forbidExisting

private final boolean forbidExisting

Determines if an exception should be thrown when attempting to load a type that already exists.

Constructor Detail

UsingReflection

public UsingReflection(java.lang.ClassLoader classLoader)

Creates a new injector for the given ClassLoader and a default ProtectionDomain and a trivial PackageDefinitionStrategy which does not trigger an error when discovering existent classes.

Parameters:

classLoader - The ClassLoader into which new class definitions are to be injected. Must not be the bootstrap loader.

UsingReflection

public UsingReflection(java.lang.ClassLoader classLoader,
                       @MaybeNull
                       java.security.ProtectionDomain protectionDomain)

Creates a new injector for the given ClassLoader and a default PackageDefinitionStrategy where the injection of existent classes does not trigger an error.

Parameters:

classLoader - The ClassLoader into which new class definitions are to be injected. Must not be the bootstrap loader.

protectionDomain - The protection domain to apply during class definition.

UsingReflection

public UsingReflection(java.lang.ClassLoader classLoader,
                       @MaybeNull
                       java.security.ProtectionDomain protectionDomain,
                       PackageDefinitionStrategy packageDefinitionStrategy,
                       boolean forbidExisting)

Creates a new injector for the given ClassLoader and ProtectionDomain.

Parameters:

classLoader - The ClassLoader into which new class definitions are to be injected.Must not be the bootstrap loader.

protectionDomain - The protection domain to apply during class definition.

packageDefinitionStrategy - The package definer to be queried for package definitions.

forbidExisting - Determines if an exception should be thrown when attempting to load a type that already exists.

Method Detail

doPrivileged

@Enhance
private static <T> T doPrivileged(java.security.PrivilegedAction<T> action)

A proxy for java.security.AccessController#doPrivileged that is activated if available.

Type Parameters:

T - The type of the action's resolved value.

Parameters:

action - The action to execute from a privileged context.

Returns:

The action's resolved value.

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()

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

Returns:

true if this class injection is available.

ofSystemClassLoader

public static ClassInjector ofSystemClassLoader()

Creates a class injector for the system class loader.

Returns:

A class injector for the system class loader.