Package com.yahoo.search.query.profile

Class CopyOnWriteContent

java.lang.Object

com.yahoo.component.provider.FreezableClass

com.yahoo.search.query.profile.CopyOnWriteContent

All Implemented Interfaces:

com.yahoo.component.provider.Freezable, Cloneable

public class CopyOnWriteContent
extends com.yahoo.component.provider.FreezableClass
implements Cloneable

A HashMap wrapper which can be cloned without copying the wrapped map. Copying of the map is deferred until there is a write access to the wrapped map. This may be frozen, at which point no further modifications are allowed. Note that until this is cloned, the internal map may be both read and written.

Author:

bratseth

Constructor Summary

Constructors

Constructor	Description
CopyOnWriteContent()	Create a WRITABLE, empty instance

Method Summary

Modifier and Type	Method	Description
CopyOnWriteContent	clone()
void	freeze()
Object	get(String key)
void	put(String key, Object value)
void	remove(String key)
Map<String,Object>	unmodifiableMap()

Methods inherited from class com.yahoo.component.provider.FreezableClass

ensureNotFrozen, isFrozen

Methods inherited from class java.lang.Object

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

Constructor Details

CopyOnWriteContent

public CopyOnWriteContent()

Create a WRITABLE, empty instance

Method Details

freeze

public void freeze()

Specified by:

freeze in interface com.yahoo.component.provider.Freezable

Overrides:

freeze in class com.yahoo.component.provider.FreezableClass

clone

public CopyOnWriteContent clone()

Overrides:

clone in class com.yahoo.component.provider.FreezableClass

unmodifiableMap

public Map<String,Object> unmodifiableMap()

get

public Object get(String key)

put

public void put(String key,
 Object value)

remove

public void remove(String key)