net.bytebuddy.utility

Class JavaModule.Dispatcher.Enabled

java.lang.Object

net.bytebuddy.utility.JavaModule.Dispatcher.Enabled

All Implemented Interfaces:

JavaModule.Dispatcher

Enclosing interface:

JavaModule.Dispatcher

@HashCodeAndEqualsPlugin.Enhance
public static class JavaModule.Dispatcher.Enabled
extends java.lang.Object
implements JavaModule.Dispatcher

A dispatcher for a VM that does support the java.lang.Module API.

Nested Class Summary

Nested classes/interfaces inherited from interface net.bytebuddy.utility.JavaModule.Dispatcher

JavaModule.Dispatcher.CreationAction, JavaModule.Dispatcher.Disabled, JavaModule.Dispatcher.Enabled

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.reflect.Method	canRead The java.lang.Module#canRead(Module) method.
private java.lang.reflect.Method	getClassLoader The java.lang.Module#getClassLoader() method.
private java.lang.reflect.Method	getModule The java.lang.Class#getModule() method.
private java.lang.reflect.Method	getName The java.lang.Module#getName() method.
private java.lang.reflect.Method	getResourceAsStream The java.lang.Module#getResourceAsStream(String) method.
private java.lang.reflect.Method	isModifiableModule The java.lang.instrument.Instrumentation#isModifiableModule method.
private java.lang.reflect.Method	isNamed The java.lang.Module#isNamed() method.
private static java.lang.Object[]	NO_ARGUMENTS An empty array that can be used to indicate no arguments to avoid an allocation on a reflective call.
private java.lang.reflect.Method	redefineModule The java.lang.instrument.Instrumentation#redefineModule method.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Enabled(java.lang.reflect.Method getModule, java.lang.reflect.Method getClassLoader, java.lang.reflect.Method isNamed, java.lang.reflect.Method getName, java.lang.reflect.Method getResourceAsStream, java.lang.reflect.Method canRead, java.lang.reflect.Method isModifiableModule, java.lang.reflect.Method redefineModule) Creates an enabled dispatcher.

Method Summary

Modifier and Type	Method and Description
void	addReads(java.lang.instrument.Instrumentation instrumentation, java.lang.Object source, java.lang.Object target) Adds a read-edge from the source to the target module.
boolean	canRead(java.lang.Object source, java.lang.Object target) Checks if the source module can read the target module.
java.lang.ClassLoader	getClassLoader(java.lang.Object module) Returns the module's class loader.
java.lang.String	getName(java.lang.Object module) Returns the module's name.
java.io.InputStream	getResourceAsStream(java.lang.Object module, java.lang.String name) Returns a resource stream for this module for a resource of the given name or null if such a resource does not exist.
boolean	isAlive() Checks if this dispatcher is alive, i.e.
boolean	isNamed(java.lang.Object module) Returns true if the supplied module is named.
JavaModule	moduleOf(java.lang.Class<?> type) Extracts the Java Module for the provided class or returns null if the current VM does not support modules.

Methods inherited from class java.lang.Object

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

Field Detail

NO_ARGUMENTS

private static final java.lang.Object[] NO_ARGUMENTS

An empty array that can be used to indicate no arguments to avoid an allocation on a reflective call.

getModule

private final java.lang.reflect.Method getModule

The java.lang.Class#getModule() method.

getClassLoader

private final java.lang.reflect.Method getClassLoader

The java.lang.Module#getClassLoader() method.

isNamed

private final java.lang.reflect.Method isNamed

The java.lang.Module#isNamed() method.

getName

private final java.lang.reflect.Method getName

The java.lang.Module#getName() method.

getResourceAsStream

private final java.lang.reflect.Method getResourceAsStream

The java.lang.Module#getResourceAsStream(String) method.

canRead

private final java.lang.reflect.Method canRead

The java.lang.Module#canRead(Module) method.

isModifiableModule

private final java.lang.reflect.Method isModifiableModule

The java.lang.instrument.Instrumentation#isModifiableModule method.

redefineModule

private final java.lang.reflect.Method redefineModule

The java.lang.instrument.Instrumentation#redefineModule method.

Constructor Detail

Enabled

protected Enabled(java.lang.reflect.Method getModule,
                  java.lang.reflect.Method getClassLoader,
                  java.lang.reflect.Method isNamed,
                  java.lang.reflect.Method getName,
                  java.lang.reflect.Method getResourceAsStream,
                  java.lang.reflect.Method canRead,
                  java.lang.reflect.Method isModifiableModule,
                  java.lang.reflect.Method redefineModule)

Creates an enabled dispatcher.

Parameters:

getModule - The java.lang.Class#getModule() method.

getClassLoader - The java.lang.Module#getClassLoader() method.

isNamed - The java.lang.Module#isNamed() method.

getName - The java.lang.Module#getName() method.

getResourceAsStream - The java.lang.Module#getResourceAsStream(String) method.

canRead - The java.lang.Module#canRead(Module) method.

isModifiableModule - The java.lang.instrument.Instrumentation#isModifiableModule method.

redefineModule - The java.lang.instrument.Instrumentation#redefineModule method.

Method Detail

isAlive

public boolean isAlive()

Checks if this dispatcher is alive, i.e. supports modules.

Specified by:

isAlive in interface JavaModule.Dispatcher

Returns:

true if modules are supported on the current VM.

moduleOf

public JavaModule moduleOf(java.lang.Class<?> type)

Extracts the Java Module for the provided class or returns null if the current VM does not support modules.

Specified by:

moduleOf in interface JavaModule.Dispatcher

Parameters:

type - The type for which to extract the module.

Returns:

The class's Module or null if the current VM does not support modules.

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.Object module,
                                               java.lang.String name)

Returns a resource stream for this module for a resource of the given name or null if such a resource does not exist.

Specified by:

getResourceAsStream in interface JavaModule.Dispatcher

Parameters:

module - The java.lang.Module instance to apply this method upon.

name - The name of the resource.

Returns:

An input stream for the resource or null if it does not exist.

getClassLoader

public java.lang.ClassLoader getClassLoader(java.lang.Object module)

Returns the module's class loader.

Specified by:

getClassLoader in interface JavaModule.Dispatcher

Parameters:

module - The java.lang.Module

Returns:

The module's class loader.

isNamed

public boolean isNamed(java.lang.Object module)

Returns true if the supplied module is named.

Specified by:

isNamed in interface JavaModule.Dispatcher

Parameters:

module - The java.lang.Module to check for the existence of a name.

Returns:

true if the supplied module is named.

getName

public java.lang.String getName(java.lang.Object module)

Returns the module's name.

Specified by:

getName in interface JavaModule.Dispatcher

Parameters:

module - The java.lang.Module to check for its name.

Returns:

The module's (implicit or explicit) name.

canRead

public boolean canRead(java.lang.Object source,
                       java.lang.Object target)

Checks if the source module can read the target module.

Specified by:

canRead in interface JavaModule.Dispatcher

Parameters:

source - The source module.

target - The target module.

Returns:

true if the source module can read the target module.

addReads

public void addReads(java.lang.instrument.Instrumentation instrumentation,
                     java.lang.Object source,
                     java.lang.Object target)

Adds a read-edge from the source to the target module.

Specified by:

addReads in interface JavaModule.Dispatcher

Parameters:

instrumentation - The instrumentation instance to use for adding the edge.

source - The source module.

target - The target module.