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Java 2 Platform SE v1.3.1: Interface ActivationInstantiator
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java.rmi.activation
Interface ActivationInstantiator

All Superinterfaces:
Remote
All Known Implementing Classes:
ActivationGroup
public interface ActivationInstantiator
extends Remote

An ActivationInstantiator is responsible for creating instances of "activatable" objects. A concrete subclass of ActivationGroup implements the newInstance method to handle creating objects within the group.

Since:
1.2
See Also:
ActivationGroup

Method Summary
 MarshalledObject newInstance(ActivationID id, ActivationDesc desc)
          The activator calls an instantiator's newInstance method in order to recreate in that group an object with the activation identifier, id, and descriptor, desc.
 

Method Detail

newInstance

public MarshalledObject newInstance(ActivationID id,
                                    ActivationDesc desc)
                             throws ActivationException,
                                    RemoteException
The activator calls an instantiator's newInstance method in order to recreate in that group an object with the activation identifier, id, and descriptor, desc. The instantiator is responsible for:
  • determining the class for the object using the descriptor's getClassName method,
  • loading the class from the code location obtained from the descriptor (using the getLocation method),
  • creating an instance of the class by invoking the special "activation" constructor of the object's class that takes two arguments: the object's ActivationID, and the MarshalledObject containing object specific initialization data, and
  • returning a MarshalledObject containing the stub for the remote object it created

    Parameters:
    id - the object's activation identifier
    desc - the object's descriptor
    Returns:
    a marshalled object containing the serialized representation of remote object's stub
    Throws:
    ActivationException - if object activation fails
    RemoteException - if remote call fails
    Since:
    1.2
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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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