Package org.infinispan.commons.configuration.attributes

Class Attribute<T>

java.lang.Object

org.infinispan.commons.configuration.attributes.Attribute<T>

All Implemented Interfaces:

Cloneable, Matchable<Attribute<?>>, Updatable<Attribute<T>>

public final class Attribute<T>
extends Object
implements Cloneable, Matchable<Attribute<?>>, Updatable<Attribute<T>>

Attribute. This class implements a configuration attribute value holder. A configuration attribute is defined by an AttributeDefinition. An attribute contains an optional value (or defers to its AttributeDefinition for the default value). It is possible to determine whether a value has been changed with respect to its initial value. An Attribute remains modifiable until it is protected. At which point it can only be modified if its AttributeDefinition allows it to be mutable. Additionally it is possible to register listeners when values change so that code can react to these changes.

Since:

7.2

Author:

Tristan Tarrant

Method Summary

Modifier and Type	Method	Description
Attribute<T>	addListener(AttributeListener<T> listener)
void	apply(Consumer<T> consumer)
protected Attribute<T>	clone()
T	computeIfAbsent(Supplier<T> supplier)
boolean	equals(Object obj)
Attribute<T>	fromString(String value)
T	get()
AttributeDefinition<T>	getAttributeDefinition()
T	getInitialValue()
int	hashCode()
boolean	isImmutable()
boolean	isModified()
boolean	isNull()
boolean	isPersistent()
boolean	isRepeated()
boolean	matches(Attribute<?> other)	Compares this attribute to another attribute taking into account the AttributeDefinition.isGlobal() flag.
Attribute<T>	merge(Attribute<T> other)
String	name()
T	orElse(T other)
Attribute<T>	protect()
Attribute<T>	read(Attribute<T> other)
Attribute<T>	removeListener(Predicate<AttributeListener<T>> filter)
Attribute<T>	removeListener(AttributeListener<T> listener)
Attribute<T>	reset()
Attribute<T>	set(T value)
Attribute<T>	setImplied(T value)
String	toString()
void	update(String elementName, Attribute<T> other)	Updates this attribute with the value of the other attribute only if the attribute is mutable and the other has been modified from its default value
void	validate()
void	validateUpdate(String parentName, Attribute<T> other)	Verifies that updating the mutable part of this instance with the values of the other instance is possible

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Method Details

name

public String name()

get

public T get()

orElse

public T orElse(T other)

getInitialValue

public T getInitialValue()

validate

public void validate()

protect

public Attribute<T> protect()

set

public Attribute<T> set(T value)

setImplied

public Attribute<T> setImplied(T value)

fromString

public Attribute<T> fromString(String value)

computeIfAbsent

public T computeIfAbsent(Supplier<T> supplier)

isImmutable

public boolean isImmutable()

isPersistent

public boolean isPersistent()

isModified

public boolean isModified()

isRepeated

public boolean isRepeated()

addListener

public Attribute<T> addListener(AttributeListener<T> listener)

removeListener

public Attribute<T> removeListener(AttributeListener<T> listener)

removeListener

public Attribute<T> removeListener(Predicate<AttributeListener<T>> filter)

isNull

public boolean isNull()

getAttributeDefinition

public AttributeDefinition<T> getAttributeDefinition()

clone

protected Attribute<T> clone()

Overrides:

clone in class Object

read

public Attribute<T> read(Attribute<T> other)

merge

public Attribute<T> merge(Attribute<T> other)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

matches

public boolean matches(Attribute<?> other)

Compares this attribute to another attribute taking into account the AttributeDefinition.isGlobal() flag. If the attribute is global, then this method will return true only if the values are identical. If the attribute is local, then this method will return true even if the values don't match. Essentially, this method only ensures that the attribute definitions are equals.

Specified by:

matches in interface Matchable<T>

Parameters:

other -

Returns:

update

public void update(String elementName,
 Attribute<T> other)

Updates this attribute with the value of the other attribute only if the attribute is mutable and the other has been modified from its default value

Specified by:

update in interface Updatable<T>

Parameters:

other -

validateUpdate

public void validateUpdate(String parentName,
 Attribute<T> other)

Description copied from interface: Updatable

Verifies that updating the mutable part of this instance with the values of the other instance is possible

Specified by:

validateUpdate in interface Updatable<T>

Parameters:

other -

apply

public void apply(Consumer<T> consumer)

toString

public String toString()

Overrides:

toString in class Object

reset

public Attribute<T> reset()