Package net.bytebuddy.dynamic

Class ClassFileLocator.ForModule

java.lang.Object

net.bytebuddy.dynamic.ClassFileLocator.ForModule

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, ClassFileLocator

Enclosing interface:

ClassFileLocator

@Enhance
public static class ClassFileLocator.ForModule
extends java.lang.Object
implements ClassFileLocator

A class file locator that locates class files by querying a Java module's getResourceAsStream method.

Important: Even when calling Closeable.close() on this class file locator, no underlying class loader is closed if it implements the Closeable interface as this is typically not intended.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ClassFileLocator.ForModule.WeaklyReferenced	A class file locator for a Java module that only references this module weakly.

Nested classes/interfaces inherited from interface net.bytebuddy.dynamic.ClassFileLocator

ClassFileLocator.Compound, ClassFileLocator.Filtering, ClassFileLocator.ForClassLoader, ClassFileLocator.ForFolder, ClassFileLocator.ForInstrumentation, ClassFileLocator.ForJarFile, ClassFileLocator.ForModule, ClassFileLocator.ForModuleFile, ClassFileLocator.ForUrl, ClassFileLocator.MultiReleaseAware, ClassFileLocator.NoOp, ClassFileLocator.PackageDiscriminating, ClassFileLocator.Resolution, ClassFileLocator.Simple

Field Summary

Fields

Modifier and Type	Field	Description
private JavaModule	module	The represented Java module.
private static java.lang.Object[]	NO_ARGUMENT	An empty array that can be used to indicate no arguments to avoid an allocation on a reflective call.

Fields inherited from interface net.bytebuddy.dynamic.ClassFileLocator

CLASS_FILE_EXTENSION, META_INF_VERSIONS

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ForModule(JavaModule module)	Creates a new class file locator for a Java module.

Method Summary

Modifier and Type	Method	Description
void	close()
ClassFileLocator.Resolution	locate(java.lang.String name)	Locates the class file for a given type and returns the binary data of the class file.
protected static ClassFileLocator.Resolution	locate(JavaModule module, java.lang.String typeName)	Creates a resolution for a Java module's class files.
static ClassFileLocator	of(JavaModule module)	Returns a class file locator for the provided module.
static ClassFileLocator	ofBootLayer()	Returns a class file locator that exposes all class files of the boot module layer.

Methods inherited from class java.lang.Object

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

Field Detail

NO_ARGUMENT

private static final java.lang.Object[] NO_ARGUMENT

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

module

private final JavaModule module

The represented Java module.

Constructor Detail

ForModule

protected ForModule(JavaModule module)

Creates a new class file locator for a Java module.

Parameters:

module - The represented Java module.

Method Detail

ofBootLayer

public static ClassFileLocator ofBootLayer()

Returns a class file locator that exposes all class files of the boot module layer. This class file locator is only available on virtual machines of version 9 or later. On earlier versions, the returned class file locator does not locate any resources.

Returns:

A class file locator that locates classes of the boot layer.

of

public static ClassFileLocator of(JavaModule module)

Returns a class file locator for the provided module. If the provided module is not named, class files are located via this unnamed module's class loader.

Parameters:

module - The module to create a class file locator for.

Returns:

An appropriate class file locator.

locate

public ClassFileLocator.Resolution locate(java.lang.String name)
                                   throws java.io.IOException

Locates the class file for a given type and returns the binary data of the class file.

Specified by:

locate in interface ClassFileLocator

Parameters:

name - The name of the type to locate a class file representation for.

Returns:

Any binary representation of the type which might be illegal.

Throws:

java.io.IOException - If reading a class file causes an error.

locate

protected static ClassFileLocator.Resolution locate(JavaModule module,
                                                    java.lang.String typeName)
                                             throws java.io.IOException

Creates a resolution for a Java module's class files.

Parameters:

module - The Java module to query.

typeName - The name of the type being queried.

Returns:

A resolution for the query.

Throws:

java.io.IOException - If an I/O exception was thrown.

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable