org.apache.wicket.core.util.lang

Class WicketObjects

java.lang.Object

org.apache.wicket.core.util.lang.WicketObjects

public class WicketObjects
extends Object

Object (de)serialization utilities.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	WicketObjects.IObjectSizeOfStrategy Interface that enables users to plugin the way object sizes are calculated with Wicket.
static class	WicketObjects.SerializingObjectSizeOfStrategy WicketObjects.IObjectSizeOfStrategy that works by serializing the object to an instance of ByteCountingOutputStream, which records the number of bytes written to it.

Method Summary

Modifier and Type	Method and Description
static <T> T	cloneModel(T object) Deprecated. Use cloneObject(Object) instead
static <T> T	cloneObject(T object) Makes a deep clone of an object by serializing and deserializing it.
static <T> T	newInstance(String className) Creates a new instance using the current application's class resolver.
static <T> Class<T>	resolveClass(String className)
static void	setObjectSizeOfStrategy(WicketObjects.IObjectSizeOfStrategy objectSizeOfStrategy) Sets the strategy for determining the sizes of objects.
static long	sizeof(Serializable object) Computes the size of an object.

Methods inherited from class java.lang.Object

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

Method Detail

resolveClass

public static <T> Class<T> resolveClass(String className)

Type Parameters:

T - class type

Parameters:

className - Class to resolve

Returns:

Resolved class

cloneModel

@Deprecated
public static <T> T cloneModel(T object)

Deprecated. Use cloneObject(Object) instead

Makes a deep clone of an object by serializing and deserializing it. The object must be fully serializable to be cloned. This method will not clone wicket Components, it will just reuse those instances so that the complete component tree is not copied over only the model data. Warning: this method uses Java Serialization APIs to be able to avoid cloning of Component instances. If the application uses custom ISerializer then most probably this method cannot be used.

Parameters:

object - The object to clone

Returns:

A deep copy of the object

cloneObject

public static <T> T cloneObject(T object)

Makes a deep clone of an object by serializing and deserializing it. The object must be fully serializable to be cloned. No extra debug info is gathered.

Parameters:

object - The object to clone

Returns:

A deep copy of the object

See Also:

cloneModel(Object)

newInstance

public static <T> T newInstance(String className)

Creates a new instance using the current application's class resolver. Returns null if className is null.

Parameters:

className - The full class name

Returns:

The new object instance

setObjectSizeOfStrategy

public static void setObjectSizeOfStrategy(WicketObjects.IObjectSizeOfStrategy objectSizeOfStrategy)

Sets the strategy for determining the sizes of objects.

Parameters:

objectSizeOfStrategy - the strategy. Pass null to reset to the default.

sizeof

public static long sizeof(Serializable object)

Computes the size of an object. Note that this is an estimation, never an absolute accurate size.

Parameters:

object - Object to compute size of

Returns:

The size of the object in bytes