com.yahoo.processing.request

Class CloneHelper

java.lang.Object

com.yahoo.processing.request.CloneHelper

public class CloneHelper
extends Object

Helps to deep clone complex objects The following classes and their subclasses does have a fastpath - com.yahoo.component.provider.FreezableClass - com.yahoo.processing.request.properties.PublicCloneable BTW, this is the one you should implement too if you want the fastpath. - java.util.LinkedList - java.util.ArrayList The rest has the slow path with reflection, though using a fast thread safe method cache for speedup.

Author:

bratseth, baldersheim

Field Summary

Fields

Modifier and Type	Field and Description
private static com.yahoo.collections.MethodCache	cloneMethodCache
private static Logger	log

Constructor Summary

Constructors

Constructor and Description
CloneHelper()

Method Summary

Modifier and Type	Method and Description
private Object	arrayClone(Object array)
Object	clone(Object object) Clones this object if it is clonable, and the clone is public.
Map<CompoundName,Object>	cloneMap(Map<CompoundName,Object> map) Clones a map by deep cloning each value which is cloneable and shallow copying all other values.
private Object	objectArrayClone(Object[] object)
protected Object	objectClone(Object object)

Methods inherited from class java.lang.Object

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

Field Detail

log

private static Logger log

cloneMethodCache

private static final com.yahoo.collections.MethodCache cloneMethodCache

Constructor Detail

CloneHelper

public CloneHelper()

Method Detail

clone

public final Object clone(Object object)

Clones this object if it is clonable, and the clone is public. Returns null if not

arrayClone

private Object arrayClone(Object array)

objectArrayClone

private Object objectArrayClone(Object[] object)

objectClone

protected Object objectClone(Object object)

cloneMap

public Map<CompoundName,Object> cloneMap(Map<CompoundName,Object> map)

Clones a map by deep cloning each value which is cloneable and shallow copying all other values.