net.bytebuddy.utility

Interface JavaModule.Dispatcher

All Known Implementing Classes:

JavaModule.Dispatcher.Disabled, JavaModule.Dispatcher.Enabled

Enclosing class:

JavaModule

protected static interface JavaModule.Dispatcher

A dispatcher for accessing the java.lang.Module API if it is available on the current VM.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	JavaModule.Dispatcher.CreationAction A creation action for a dispatcher.
static class	JavaModule.Dispatcher.Disabled A disabled dispatcher for a VM that does not support the java.lang.Module API.
static class	JavaModule.Dispatcher.Enabled A dispatcher for a VM that does support the java.lang.Module API.

Method Summary

Modifier and Type	Method and Description
boolean	canRead(Object source, Object target) Checks if the source module can read the target module.
ClassLoader	getClassLoader(Object module) Returns the module's class loader.
String	getName(Object module) Returns the module's name.
InputStream	getResourceAsStream(Object module, 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	isExported(Object source, Object target, String aPackage) Returns true if the source module exports the supplied package to the target module.
boolean	isNamed(Object module) Returns true if the supplied module is named.
boolean	isOpened(Object source, Object target, String aPackage) Returns true if the source module opens the supplied package to the target module.
void	modify(Instrumentation instrumentation, Object module, Set<Object> reads, Map<String,Set<Object>> exports, Map<String,Set<Object>> opens, Set<Class<?>> uses, Map<Class<?>,List<Class<?>>> provides) Modifies this module's properties.
JavaModule	moduleOf(Class<?> type) Extracts the Java Module for the provided class or returns null if the current VM does not support modules.

Method Detail

isAlive

boolean isAlive()

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

Returns:

true if modules are supported on the current VM.

moduleOf

JavaModule moduleOf(Class<?> type)

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

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.

isNamed

boolean isNamed(Object module)

Returns true if the supplied module is named.

Parameters:

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

Returns:

true if the supplied module is named.

getName

String getName(Object module)

Returns the module's name.

Parameters:

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

Returns:

The module's (implicit or explicit) name.

getResourceAsStream

InputStream getResourceAsStream(Object module,
                                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.

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

ClassLoader getClassLoader(Object module)

Returns the module's class loader.

Parameters:

module - The java.lang.Module

Returns:

The module's class loader.

isExported

boolean isExported(Object source,
                   Object target,
                   String aPackage)

Returns true if the source module exports the supplied package to the target module.

Parameters:

source - The source module.

target - The target module.

aPackage - The name of the package to check.

Returns:

true if the source module exports the supplied package to the target module.

isOpened

boolean isOpened(Object source,
                 Object target,
                 String aPackage)

Returns true if the source module opens the supplied package to the target module.

Parameters:

source - The source module.

target - The target module.

aPackage - The name of the package to check.

Returns:

true if the source module opens the supplied package to the target module.

canRead

boolean canRead(Object source,
                Object target)

Checks if the source module can read the target module.

Parameters:

source - The source module.

target - The target module.

Returns:

true if the source module can read the target module.

modify

void modify(Instrumentation instrumentation,
            Object module,
            Set<Object> reads,
            Map<String,Set<Object>> exports,
            Map<String,Set<Object>> opens,
            Set<Class<?>> uses,
            Map<Class<?>,List<Class<?>>> provides)

Modifies this module's properties.

Parameters:

instrumentation - The instrumentation instace to use for applying the modification.

module - The module to modify.

reads - A set of additional modules this module should read.

exports - A map of packages to export to a set of modules.

opens - A map of packages to open to a set of modules.

uses - A set of provider interfaces to use by this module.

provides - A map of provider interfaces to provide by this module mapped to the provider implementations.