Class Attributes.Layer

java.lang.Object

org.eclipse.jetty.util.Attributes.Wrapper

org.eclipse.jetty.util.Attributes.Layer

All Implemented Interfaces:

Attributes

Direct Known Subclasses:

ContextHandler.ScopedContext

Enclosing interface:

Attributes

public static class Attributes.Layer
extends Attributes.Wrapper

An Attributes implementation backed by another Attributes instance, which is treated as immutable, but with a ConcurrentHashMap used as a mutable layer over it.

Nested Class Summary

Nested classes/interfaces inherited from interface Attributes

Attributes.Layer, Attributes.Lazy, Attributes.Mapped, Attributes.Synthetic, Attributes.Wrapper

Field Summary

Fields inherited from interface Attributes

NULL

Constructor Summary

Constructors

Constructor	Description
Layer(Attributes persistent)
Layer(Attributes persistent, Attributes layer)

Method Summary

Modifier and Type	Method	Description
void	clearAttributes()	Clear all attribute names
void	clearLayerAttributes()	Clear the layer attributes, leaving the persistent attributes intact / restored
Object	getAttribute(String name)	Get an attribute by name.
Set<String>	getAttributeNameSet()	Get the immutable set of attribute names.
Attributes	getPersistentAttributes()
Object	removeAttribute(String name)	Remove an attribute
Object	setAttribute(String name, Object attribute)	Set an attribute

Methods inherited from class Attributes.Wrapper

equals, getWrapped, hashCode

Methods inherited from class Object

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

Methods inherited from interface Attributes

asAttributeMap

Constructor Details

Layer

public Layer(Attributes persistent)

Layer

public Layer(Attributes persistent,
 Attributes layer)

Method Details

getPersistentAttributes

public Attributes getPersistentAttributes()

clearLayerAttributes

public void clearLayerAttributes()

Clear the layer attributes, leaving the persistent attributes intact / restored

removeAttribute

public Object removeAttribute(String name)

Description copied from interface: Attributes

Remove an attribute

Specified by:

removeAttribute in interface Attributes

Overrides:

removeAttribute in class Attributes.Wrapper

Parameters:

name - the attribute to remove

Returns:

the value of the attribute if removed, else null

setAttribute

public Object setAttribute(String name,
 Object attribute)

Description copied from interface: Attributes

Set an attribute

Specified by:

setAttribute in interface Attributes

Overrides:

setAttribute in class Attributes.Wrapper

Parameters:

name - the attribute to set

attribute - the value to set. A null value is equivalent to removing the attribute.

Returns:

the previous value of the attribute if set, else null

getAttribute

public Object getAttribute(String name)

Description copied from interface: Attributes

Get an attribute by name. Some attributes may be "hidden" attributes, in that they are only found by an explicit call to getAttribute(String) and they do not otherwise appear in Attributes.getAttributeNameSet() or Attributes.asAttributeMap().

Specified by:

getAttribute in interface Attributes

Overrides:

getAttribute in class Attributes.Wrapper

Parameters:

name - the attribute to get

Returns:

the value of the attribute, or null if no such attribute exists

getAttributeNameSet

public Set<String> getAttributeNameSet()

Description copied from interface: Attributes

Get the immutable set of attribute names.

Specified by:

getAttributeNameSet in interface Attributes

Overrides:

getAttributeNameSet in class Attributes.Wrapper

Returns:

Set of attribute names, or an empty set if there are no attributes.

clearAttributes

public void clearAttributes()

Description copied from interface: Attributes

Clear all attribute names

Specified by:

clearAttributes in interface Attributes

Overrides:

clearAttributes in class Attributes.Wrapper