Package org.osgi.framework.namespace

Class BundleNamespace

java.lang.Object

org.osgi.resource.Namespace

org.osgi.framework.namespace.AbstractWiringNamespace

org.osgi.framework.namespace.BundleNamespace

public final class BundleNamespace
extends AbstractWiringNamespace

Bundle 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 Require-Bundle 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 Require-Bundle headers must be ignored. An effective directive must not be present in a capability or requirement.
• The cardinality directive must be ignored. A cardinality directive specified on the Require-Bundle header must be ignored. A cardinality directive must not be present in a requirement.

A non-fragment resource with the osgi.bundle type identity provides exactly one^† bundle capability (that is, the bundle can be required by another bundle). A fragment resource with the osgi.fragment type identity must not declare a bundle capability. A resource requires zero or more bundle requirements (that is, required bundles).

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

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	BUNDLE_NAMESPACE	Namespace name for bundle capabilities and requirements.
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	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.
static java.lang.String	VISIBILITY_PRIVATE	The directive value identifying a private visibility type.
static java.lang.String	VISIBILITY_REEXPORT	The directive value identifying a reexport visibility type.

Fields inherited from class org.osgi.framework.namespace.AbstractWiringNamespace

CAPABILITY_BUNDLE_VERSION_ATTRIBUTE, CAPABILITY_MANDATORY_DIRECTIVE

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

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

BUNDLE_NAMESPACE

public static final java.lang.String BUNDLE_NAMESPACE

Namespace name for bundle capabilities and requirements.

Also, the capability attribute used to specify the symbolic name of the bundle.

See Also:

Constant Field Values

CAPABILITY_SINGLETON_DIRECTIVE

public static final java.lang.String CAPABILITY_SINGLETON_DIRECTIVE

The capability directive identifying if the resource is a singleton. A String value of "true" indicates the resource is a singleton; any other value or null indicates the resource is not a singleton.

This directive should be examined using the identity namespace.

See Also:

IdentityNamespace.CAPABILITY_SINGLETON_DIRECTIVE, Constant Field Values

CAPABILITY_FRAGMENT_ATTACHMENT_DIRECTIVE

public static final java.lang.String CAPABILITY_FRAGMENT_ATTACHMENT_DIRECTIVE

The capability directive identifying if and when a fragment may attach to a host bundle.

This directive should be examined using the host namespace.

See Also:

HostNamespace.CAPABILITY_FRAGMENT_ATTACHMENT_DIRECTIVE, Constant Field Values

REQUIREMENT_EXTENSION_DIRECTIVE

public static final java.lang.String REQUIREMENT_EXTENSION_DIRECTIVE

The requirement directive used to specify the type of the extension fragment.

This directive should be examined using the host namespace.

See Also:

HostNamespace.REQUIREMENT_EXTENSION_DIRECTIVE, Constant Field Values

REQUIREMENT_VISIBILITY_DIRECTIVE

public static final java.lang.String REQUIREMENT_VISIBILITY_DIRECTIVE

The requirement directive used to specify the visibility type for a requirement. The default value is private.

See Also:

private, reexport, Constant Field Values

VISIBILITY_PRIVATE

public static final java.lang.String VISIBILITY_PRIVATE

The directive value identifying a private visibility type. A private visibility type indicates that any packages that are exported by the required bundle are not made visible on the export signature of the requiring bundle. .

See Also:

REQUIREMENT_VISIBILITY_DIRECTIVE, Constant Field Values

VISIBILITY_REEXPORT

public static final java.lang.String VISIBILITY_REEXPORT

The directive value identifying a reexport visibility type. A reexport visibility type indicates any packages that are exported by the required bundle are re-exported by the requiring bundle.

See Also:

REQUIREMENT_VISIBILITY_DIRECTIVE, Constant Field Values