org.osgi.service.metatype

Interface MetaTypeService

@ProviderType
public interface MetaTypeService

The MetaType Service can be used to obtain meta type information for a bundle. The MetaType Service will examine the specified bundle for meta type documents to create the returned MetaTypeInformation object.

If the specified bundle does not contain any meta type documents, then a MetaTypeInformation object will be returned that wrappers any ManagedService or ManagedServiceFactory services registered by the specified bundle that implement MetaTypeProvider. Thus the MetaType Service can be used to retrieve meta type information for bundles which contain a meta type documents or which provide their own MetaTypeProvider objects.

Since:

1.1

"ThreadSafe"

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	METATYPE_CAPABILITY_NAME Capability name for meta type document processors.
static java.lang.String	METATYPE_DOCUMENTS_LOCATION Location of meta type documents.
static java.lang.String	METATYPE_SPECIFICATION_VERSION Compile time constant for the Specification Version of MetaType Service.

Method Summary

Modifier and Type	Method and Description
MetaTypeInformation	getMetaTypeInformation(Bundle bundle) Return the MetaType information for the specified bundle.

Field Detail

METATYPE_DOCUMENTS_LOCATION

static final java.lang.String METATYPE_DOCUMENTS_LOCATION

Location of meta type documents. The MetaType Service will process each entry in the meta type documents directory.

See Also:

Constant Field Values

METATYPE_CAPABILITY_NAME

static final java.lang.String METATYPE_CAPABILITY_NAME

Capability name for meta type document processors.

Used in Provide-Capability and Require-Capability manifest headers with the osgi.extender namespace. For example:

 Require-Capability: osgi.extender;
  filter:="(&(osgi.extender=osgi.metatype)(version>=1.4)(!(version>=2.0)))"
 

Since:

1.3

See Also:

Constant Field Values

METATYPE_SPECIFICATION_VERSION

static final java.lang.String METATYPE_SPECIFICATION_VERSION

Compile time constant for the Specification Version of MetaType Service.

Used in Version and Requirement annotations. The value of this compile time constant will change when the specification version of MetaType Service is updated.

Since:

1.4

See Also:

Constant Field Values

Method Detail

getMetaTypeInformation

MetaTypeInformation getMetaTypeInformation(Bundle bundle)

Return the MetaType information for the specified bundle.

Parameters:

bundle - The bundle for which meta type information is requested.

Returns:

A MetaTypeInformation object for the specified bundle.