Package net.bytebuddy.dynamic.loading

Enum Class ByteArrayClassLoader.PersistenceHandler

java.lang.Object

java.lang.Enum<ByteArrayClassLoader.PersistenceHandler>

net.bytebuddy.dynamic.loading.ByteArrayClassLoader.PersistenceHandler

All Implemented Interfaces:

Serializable, Comparable<ByteArrayClassLoader.PersistenceHandler>, Constable

Enclosing class:

ByteArrayClassLoader

public static enum ByteArrayClassLoader.PersistenceHandler
extends Enum<ByteArrayClassLoader.PersistenceHandler>

A persistence handler decides on whether the byte array that represents a loaded class is exposed by the ClassLoader.getResourceAsStream(String) method.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	ByteArrayClassLoader.PersistenceHandler.UrlDefinitionAction	An action to define a URL that represents a class file.

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
LATENT	The latent persistence handler hides all class file representations and does not make them accessible even before they are loaded.
MANIFEST	The manifest persistence handler retains all class file representations and makes them accessible.

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	CLASS_FILE_SUFFIX	The suffix of files in the Java class file format.
private final boolean	manifest	true if this persistence handler represents manifest class file storage.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	PersistenceHandler(boolean manifest)	Creates a new persistence handler.

Method Summary

Modifier and Type	Method	Description
boolean	isManifest()	Checks if this persistence handler represents manifest class file storage.
protected abstract byte[]	lookup(String name, ConcurrentMap<String,byte[]> typeDefinitions)	Performs a lookup of a class file by its name.
protected abstract void	release(String name, ConcurrentMap<String,byte[]> typeDefinitions)	Removes the binary representation of the supplied type if this class loader is latent.
protected abstract URL	url(String resourceName, ConcurrentMap<String,byte[]> typeDefinitions)	Returns a URL representing a class file.
static ByteArrayClassLoader.PersistenceHandler	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ByteArrayClassLoader.PersistenceHandler[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

MANIFEST

public static final ByteArrayClassLoader.PersistenceHandler MANIFEST

The manifest persistence handler retains all class file representations and makes them accessible.

LATENT

public static final ByteArrayClassLoader.PersistenceHandler LATENT

The latent persistence handler hides all class file representations and does not make them accessible even before they are loaded.

Field Details

CLASS_FILE_SUFFIX

private static final String CLASS_FILE_SUFFIX

The suffix of files in the Java class file format.

See Also:

• Constant Field Values

manifest

private final boolean manifest

true if this persistence handler represents manifest class file storage.

Constructor Details

PersistenceHandler

private PersistenceHandler(boolean manifest)

Creates a new persistence handler.

Parameters:

manifest - true if this persistence handler represents manifest class file storage.

Method Details

values

public static ByteArrayClassLoader.PersistenceHandler[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static ByteArrayClassLoader.PersistenceHandler valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

isManifest

public boolean isManifest()

Checks if this persistence handler represents manifest class file storage.

Returns:

true if this persistence handler represents manifest class file storage.

lookup

@MaybeNull
protected abstract byte[] lookup(String name,
 ConcurrentMap<String,byte[]> typeDefinitions)

Performs a lookup of a class file by its name.

Parameters:

name - The name of the class to be loaded.

typeDefinitions - A map of fully qualified class names pointing to their binary representations.

Returns:

The byte array representing the requested class or null if no such class is known.

url

@MaybeNull
protected abstract URL url(String resourceName,
 ConcurrentMap<String,byte[]> typeDefinitions)

Returns a URL representing a class file.

Parameters:

resourceName - The name of the requested resource.

typeDefinitions - A mapping of byte arrays by their type names.

Returns:

A URL representing the type definition or null if the requested resource does not represent a class file.

release

protected abstract void release(String name,
 ConcurrentMap<String,byte[]> typeDefinitions)

Removes the binary representation of the supplied type if this class loader is latent.

Parameters:

name - The name of the type.

typeDefinitions - A mapping of byte arrays by their type names.