Package org.osgi.framework.namespace

Class HostNamespace

  • public final class HostNamespace
extends AbstractWiringNamespace
    Host Capability and Requirement Namespace.

    This class defines the names for the attributes and directives for this namespace. All unspecified capability attributes are of type String and are used as arbitrary matching attributes for the capability. The values associated with the specified directive and attribute keys are of type String, unless otherwise indicated.

    Unless otherwise noted, all directives specified on the Bundle-SymbolicName header are visible in the capability and all directives specified on the Fragment-Host header are visible in the requirement.

    • The uses directive must be ignored. A uses directive specified on the Bundle-SymbolicName header must be ignored. A uses directive must not be present in the capability.
    • The effective directives must be ignored. This namespace is only effective at resolve time. An effective directive specified on the Bundle-SymbolicName or Fragment-Host headers must be ignored. An effective directive must not be present in a capability or requirement.
    • The cardinality directive has limited applicability to this namespace. A cardinality directive specified on the Fragment-Host header must be ignored. All requirements must have the cardinality directive set to multiple.

    A non-fragment resource with the osgi.bundle type identity provides zero or one† host capabilities. A fragment resource with the osgi.fragment type identity must not declare a host capability and must declare exactly one host requirement.

    † A resource with no bundle symbolic name must not provide a host capability.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String CAPABILITY_FRAGMENT_ATTACHMENT_DIRECTIVE
      The capability directive identifying if and when a fragment may attach to a host bundle.
      static java.lang.String CAPABILITY_SINGLETON_DIRECTIVE
      The capability directive identifying if the resource is a singleton.
      static java.lang.String EXTENSION_BOOTCLASSPATH
      Deprecated.
      As of 1.2.
      static java.lang.String EXTENSION_FRAMEWORK
      The directive value indicating that the extension fragment is to be loaded by the framework's class loader.
      static java.lang.String FRAGMENT_ATTACHMENT_ALWAYS
      The directive value indicating that fragments are allowed to attach to the host bundle at any time (while the host is resolved or during the process of resolving the host bundle).
      static java.lang.String FRAGMENT_ATTACHMENT_NEVER
      The directive value indicating that no fragments are allowed to attach to the host bundle at any time.
      static java.lang.String FRAGMENT_ATTACHMENT_RESOLVETIME
      The directive value indicating that fragments are allowed to attach to the host bundle only during the process of resolving the host bundle.
      static java.lang.String HOST_NAMESPACE
      Namespace name for host capabilities and requirements.
      static java.lang.String REQUIREMENT_EXTENSION_DIRECTIVE
      The requirement directive used to specify the type of the extension fragment.
      static java.lang.String REQUIREMENT_VISIBILITY_DIRECTIVE
      The requirement directive used to specify the visibility type for a requirement.

      • Fields inherited from class org.osgi.resource.Namespace

        CAPABILITY_EFFECTIVE_DIRECTIVE, CAPABILITY_USES_DIRECTIVE, CARDINALITY_MULTIPLE, CARDINALITY_SINGLE, EFFECTIVE_ACTIVE, EFFECTIVE_RESOLVE, REQUIREMENT_CARDINALITY_DIRECTIVE, REQUIREMENT_EFFECTIVE_DIRECTIVE, REQUIREMENT_FILTER_DIRECTIVE, REQUIREMENT_RESOLUTION_DIRECTIVE, RESOLUTION_MANDATORY, RESOLUTION_OPTIONAL

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private HostNamespace()  

    • Method Summary

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • HostNamespace

        private HostNamespace()