Package org.osgi.service.component.annotations

Enum Class ReferencePolicy

java.lang.Object

java.lang.Enum<ReferencePolicy>

org.osgi.service.component.annotations.ReferencePolicy

All Implemented Interfaces:

Serializable, Comparable<ReferencePolicy>, Constable

public enum ReferencePolicy
extends Enum<ReferencePolicy>

Policy for the Reference annotation.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
DYNAMIC	The dynamic policy is slightly more complex since the component implementation must properly handle changes in the set of bound services.
STATIC	The static policy is the most simple policy and is the default policy.

Method Summary

Modifier and Type	Method	Description
String	toString()
static ReferencePolicy	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ReferencePolicy[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

STATIC

public static final ReferencePolicy STATIC

The static policy is the most simple policy and is the default policy. A component instance never sees any of the dynamics. Component configurations are deactivated before any bound service for a reference having a static policy becomes unavailable. If a target service is available to replace the bound service which became unavailable, the component configuration must be reactivated and bound to the replacement service.

DYNAMIC

public static final ReferencePolicy DYNAMIC

The dynamic policy is slightly more complex since the component implementation must properly handle changes in the set of bound services. With the dynamic policy, SCR can change the set of bound services without deactivating a component configuration. If the component uses method injection to access services, then the component instance will be notified of changes in the set of bound services by calls to the bind and unbind methods.

Method Details

values

public static ReferencePolicy[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static ReferencePolicy valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

toString

public String toString()

Overrides:

toString in class Enum<ReferencePolicy>