?? ReferencePolicy

java.lang.Object
java.lang.Enum<ReferencePolicy>
org.osgi.service.component.annotations.ReferencePolicy
????????:
Serializable, Comparable<ReferencePolicy>

public enum ReferencePolicy extends Enum<ReferencePolicy>
Policy for the Reference annotation.
  • ????????

    • 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.
  • ??????