Class Fedora.DigitalObject.DisseminatorShadow 
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Class Fedora.DigitalObject.DisseminatorShadow 

Object
   |
   +----ObjectImpl
           |
           +----DynamicImplementation
                   |
                   +----_StandardDisseminatorSkeleton
                           |
                           +----_StandardDisseminatorImplBase
                                   |
                                   +----StandardDisseminatorImpl
                                           |
                                           +----Fedora.DigitalObject.DisseminatorShadow
public class DisseminatorShadow
extends StandardDisseminatorImpl
implements Serializable
A DisseminatorShadow object is a light-weight proxy for a Disseminator component (i.e., StandardDisseminator, ServletDisseminator, or SignatureDisseminator). The DisseminatorShadow is stored in a DigitalObject.

The DisseminatorShadow contains identifying attributes of the Disseminator, namely the component ID (system assigned), the DisseminatorID, the ServletID, the DisseminatorKind, and the parent DigitalObjectID. The shadow object does not contain the attached DataStreams. The shadow object has a method to load the full Disseminator from persistent storage. This helps performance by allowing full Disseminators (that include an array of associated DataStreams) to be instantiated only as needed in the DigitalObject. So, when a DigitalObject is instantiated, we do not get a mass instantiation of full Disseminators from persistent storage.

See Also:
StandardDisseminator, ServletDisseminator, SignatureDisseminator

Constructor Index

o Fedora.DigitalObject.DisseminatorShadow(StandardDisseminatorImpl)
Constructor for DisseminatorShadow.

Method Index

o LoadDisseminator()
Loads the full Disseminator (represented by this shadow object) from persistent storage.

Constructors

o DisseminatorShadow 
protected DisseminatorShadow(StandardDisseminatorImpl disseminator) throws RepositorySystemError
Constructor for DisseminatorShadow. Creates a new DisseminatorShadow object to be stored inside a DigitalObject in place of the full Disseminator.

Parameters:
disseminator - the Disseminator object the the shadow object will represent

Methods

o LoadDisseminator 
protected Fedora.DigitalObject.StandardDisseminatorImpl LoadDisseminator() throws RepositorySystemError
Loads the full Disseminator (represented by this shadow object) from persistent storage.

Returns:
an instance of the Disseminator represented by this DisseminatorShadow. 
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