EasyMock 5.2.0 · org.easymock.bytebuddy.dynamic.Nexus

Field Summary

Modifier and Type	Field and Description
private final int	classLoaderHashCode The class loader's hash code upon registration.
private final int	identification A random value that uniquely identifies a Nexus entry in order to avoid conflicts when applying the self-initialization strategy in multiple transformations.
private final String	name The name of a type for which a loaded type initializer is registered.
private static final ReferenceQueue<ClassLoader>	NO_QUEUE An type-safe constant for a non-operational reference queue.
public static final String	PROPERTY A system property that allows to disable the use of the `Nexus` class which is normally injected into the system class loader.
private static final ConcurrentMap<Nexus, Object>	TYPE_INITIALIZERS A map of keys identifying a loaded type by its name and class loader mapping their potential `org.easymock.bytebuddy.implementation.LoadedTypeInitializer` where the class loader of these initializers is however irrelevant.

Constructor Summary

Access Constructor and Description

private

Access	Constructor and Description
private	Nexus(Class<?> The loaded type for which a key is to be created. type, int An identification for the initializer to run. identification) Creates a key for identifying a loaded type initializer.
private	Nexus(String The name of a type for which a loaded type initializer is registered. name, ClassLoader The class loader for which a loaded type initializer is registered. classLoader, ReferenceQueue<? super ClassLoader> The reference queue to notify upon the class loader's collection or `null` if no queue should be notified. referenceQueue, int An identification for the initializer to run. identification) Creates a key for identifying a loaded type initializer.

Nexus(Class<?>

The loaded type for which a key is to be created.

type, int

An identification for the initializer to run.

identification)

Creates a key for identifying a loaded type initializer.

private

Nexus(String

The name of a type for which a loaded type initializer is registered.

name, ClassLoader

The class loader for which a loaded type initializer is registered.

classLoader, ReferenceQueue<? super ClassLoader>

The reference queue to notify upon the class loader's collection or null if no queue should be notified.

referenceQueue, int

An identification for the initializer to run.

identification)

Creates a key for identifying a loaded type initializer.

Method Summary

Modifier and Type	Method and Description
public static void	clean(Reference<? super ClassLoader> The stale reference to clean. reference) Cleans any stale entries from this nexus.
public boolean	equals(Object the reference object with which to compare. other) Overrides java.lang.Object.equals. Indicates whether some other object is "equal to" this one.
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for this object.
public static void	initialize(Class<?> The loaded type to initialize. type, int An identification for the initializer to run. identification) Initializes a loaded type.
private static String	Returns: The non-anonymous name of the given class. nonAnonymous(String The name as returned by `Class#getName()`. typeName) Normalizes a type name if it is loaded by an anonymous class loader.
public static void	register(String The name of the type for the loaded type initializer. name, ClassLoader The class loader of the type for the loaded type initializer. classLoader, ReferenceQueue<? super ClassLoader> The reference queue to notify upon the class loader's collection which will be enqueued a reference which can be handed to `Nexus#clean(Reference)` or `null` if no reference queue should be notified. referenceQueue, int An identification for the initializer to run. identification, Object The type initializer to register. The initializer must be an instance of `org.easymock.bytebuddy.implementation.LoadedTypeInitializer` where it does however not matter which class loader loaded this latter type. typeInitializer) Registers a new loaded type initializer.
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.

Field Detail

classLoaderHashCode	back to summary
private final int classLoaderHashCode The class loader's hash code upon registration.

identification	back to summary
private final int identification A random value that uniquely identifies a Nexus entry in order to avoid conflicts when applying the self-initialization strategy in multiple transformations.

name	back to summary
private final String name The name of a type for which a loaded type initializer is registered.

NO_QUEUE	back to summary
private static final ReferenceQueue<ClassLoader> NO_QUEUE An type-safe constant for a non-operational reference queue. Annotations @AlwaysNull

PROPERTY	back to summary
public static final String PROPERTY A system property that allows to disable the use of the `Nexus` class which is normally injected into the system class loader.

TYPE_INITIALIZERS	back to summary
private static final ConcurrentMap<Nexus, Object> TYPE_INITIALIZERS A map of keys identifying a loaded type by its name and class loader mapping their potential `org.easymock.bytebuddy.implementation.LoadedTypeInitializer` where the class loader of these initializers is however irrelevant.

Constructor Detail

Nexus	back to summary
private Nexus(Class<?> type, int identification) Creates a key for identifying a loaded type initializer. Parameters type:Class<?> The loaded type for which a key is to be created. identification:int An identification for the initializer to run.

Nexus

back to summary

private Nexus(Class<?> type, int identification)

Creates a key for identifying a loaded type initializer.

Parameters

type:Class<?>: The loaded type for which a key is to be created.
identification:int: An identification for the initializer to run.

Nexus back to summary

Nexus	back to summary
private Nexus(String name, ClassLoader classLoader, ReferenceQueue<? super ClassLoader> referenceQueue, int identification) Creates a key for identifying a loaded type initializer. Parameters name:String The name of a type for which a loaded type initializer is registered. classLoader:ClassLoader The class loader for which a loaded type initializer is registered. referenceQueue:ReferenceQueue<? super ClassLoader> The reference queue to notify upon the class loader's collection or `null` if no queue should be notified. identification:int An identification for the initializer to run.

private Nexus(String name, ClassLoader classLoader, ReferenceQueue<? super ClassLoader> referenceQueue, int identification)

Creates a key for identifying a loaded type initializer.

Parameters

name:String: The name of a type for which a loaded type initializer is registered.
classLoader:ClassLoader: The class loader for which a loaded type initializer is registered.
referenceQueue:ReferenceQueue<? super ClassLoader>: The reference queue to notify upon the class loader's collection or null if no queue should be notified.
identification:int: An identification for the initializer to run.

Method Detail

clean back to summary

clean	back to summary
public static void clean(Reference<? super ClassLoader> reference) Cleans any stale entries from this nexus. Entries are considered stale if their class loader was collected before a class was initialized. Important Note This method must never be called directly but only by using a `NexusAccessor` which enforces to access this class for the system class loader to assure a VM global singleton. This avoids a duplication of the class if this nexus is loaded by different class loaders. For this reason, the last parameter must not use a Byte Buddy specific type as those types can be loaded by different class loaders, too. Any access of the instance is done using Java reflection instead. Parameters reference:Reference<? super ClassLoader> The stale reference to clean.

public static void clean(Reference<? super ClassLoader> reference)

Cleans any stale entries from this nexus. Entries are considered stale if their class loader was collected before a class was initialized.

Important Note

This method must never be called directly but only by using a NexusAccessor which enforces to access this class for the system class loader to assure a VM global singleton. This avoids a duplication of the class if this nexus is loaded by different class loaders. For this reason, the last parameter must not use a Byte Buddy specific type as those types can be loaded by different class loaders, too. Any access of the instance is done using Java reflection instead.

Parameters

reference:Reference<? super ClassLoader>: The stale reference to clean.

equals back to summary

equals	back to summary
public boolean equals(Object other) Overrides java.lang.Object.equals. Doc from java.lang.Object.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Parameters other:Object the reference object with which to compare. Returns:boolean `true` if this object is the same as the obj argument; `false` otherwise. Annotations @Override

public boolean equals(Object other)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters

other:Object: the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations

@Override

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Returns:int a hash code value for this object Annotations @Override

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Returns:int

a hash code value for this object

Annotations

@Override

initialize back to summary

initialize	back to summary
public static void initialize(Class<?> type, int identification) throws Exception Initializes a loaded type. This method must only be invoked via the system class loader. Important Note This method must never be called directly but only by using a `NexusAccessor.InitializationAppender` which enforces to access this class for the system class loader to assure a VM global singleton. This avoids a duplication of the class if this nexus is loaded by different class loaders. For this reason, the last parameter must not use a Byte Buddy specific type as those types can be loaded by different class loaders, too. Any access of the instance is done using Java reflection instead. Parameters type:Class<?> The loaded type to initialize. identification:int An identification for the initializer to run. Annotations @SuppressWarnings:unused Exceptions Exception: If an exception occurs.

public static void initialize(Class<?> type, int identification) throws Exception

Initializes a loaded type. This method must only be invoked via the system class loader.

Important Note

This method must never be called directly but only by using a NexusAccessor.InitializationAppender which enforces to access this class for the system class loader to assure a VM global singleton. This avoids a duplication of the class if this nexus is loaded by different class loaders. For this reason, the last parameter must not use a Byte Buddy specific type as those types can be loaded by different class loaders, too. Any access of the instance is done using Java reflection instead.

Parameters

type:Class<?>: The loaded type to initialize.
identification:int: An identification for the initializer to run.

Annotations

@SuppressWarnings:unused

Exceptions

Exception:: If an exception occurs.

nonAnonymous back to summary

nonAnonymous	back to summary
private static String nonAnonymous(String typeName) Normalizes a type name if it is loaded by an anonymous class loader. Parameters typeName:String The name as returned by `Class#getName()`. Returns:String The non-anonymous name of the given class.

private static String nonAnonymous(String typeName)

Normalizes a type name if it is loaded by an anonymous class loader.

Parameters

typeName:String: The name as returned by Class#getName().

Returns:String

The non-anonymous name of the given class.

register	back to summary
public static void register(String name, ClassLoader classLoader, ReferenceQueue<? super ClassLoader> referenceQueue, int identification, Object typeInitializer) Registers a new loaded type initializer. Important Note This method must never be called directly but only by using a `NexusAccessor` which enforces to access this class for the system class loader to assure a VM global singleton. This avoids a duplication of the class if this nexus is loaded by different class loaders. For this reason, the last parameter must not use a Byte Buddy specific type as those types can be loaded by different class loaders, too. Any access of the instance is done using Java reflection instead. Parameters name:String The name of the type for the loaded type initializer. classLoader:ClassLoader The class loader of the type for the loaded type initializer. referenceQueue:ReferenceQueue<? super ClassLoader> The reference queue to notify upon the class loader's collection which will be enqueued a reference which can be handed to `Nexus#clean(Reference)` or `null` if no reference queue should be notified. identification:int An identification for the initializer to run. typeInitializer:Object The type initializer to register. The initializer must be an instance of `org.easymock.bytebuddy.implementation.LoadedTypeInitializer` where it does however not matter which class loader loaded this latter type.

public static void register(String name, ClassLoader classLoader, ReferenceQueue<? super ClassLoader> referenceQueue, int identification, Object typeInitializer)

Registers a new loaded type initializer.

Important Note

Parameters

name:String: The name of the type for the loaded type initializer.
classLoader:ClassLoader: The class loader of the type for the loaded type initializer.
referenceQueue:ReferenceQueue<? super ClassLoader>: The reference queue to notify upon the class loader's collection which will be enqueued a reference which can be handed to Nexus#clean(Reference) or null if no reference queue should be notified.
identification:int: An identification for the initializer to run.
typeInitializer:Object: The type initializer to register. The initializer must be an instance of org.easymock.bytebuddy.implementation.LoadedTypeInitializer where it does however not matter which class loader loaded this latter type.

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Returns:String a string representation of the object Annotations @Override

toString

back to summary

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object.

Returns:String

a string representation of the object

Annotations

@Override

public Class Nexus

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