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ServantActivatorPOA (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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org.omg.PortableServer
Class ServantActivatorPOA

java.lang.Object
  org.omg.PortableServer.Servant
      org.omg.PortableServer.ServantActivatorPOA

All Implemented Interfaces:

InvokeHandler, ServantActivatorOperations, ServantManagerOperations

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public abstract class ServantActivatorPOA
extends Servant
implements ServantActivatorOperations, InvokeHandler

When the POA has the RETAIN policy it uses servant managers that are ServantActivators.

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Constructor Summary
ServantActivatorPOA()

 

Method Summary
String[]	_all_interfaces(POA poa, byte[] objectId)           Used by the ORB to obtain complete type information from the servant.
OutputStream	_invoke(String $method, InputStream in, ResponseHandler $rh)           Invoked by the ORB to dispatch a request to the servant.
ServantActivator	_this()
ServantActivator	_this(ORB orb)

 

Methods inherited from class org.omg.PortableServer.Servant
_default_POA, _get_delegate, _get_interface_def, _is_a, _non_existent, _object_id, _orb, _poa, _set_delegate, _this_object, _this_object

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Methods inherited from interface org.omg.PortableServer.ServantActivatorOperations
etherealize, incarnate

 

Constructor Detail

ServantActivatorPOA

public ServantActivatorPOA()

Method Detail

_invoke

public OutputStream _invoke(String $method,
                            InputStream in,
                            ResponseHandler $rh)

Description copied from interface: InvokeHandler

Invoked by the ORB to dispatch a request to the servant. ORB passes the method name, an InputStream containing the marshalled arguments, and a ResponseHandler which the servant uses to construct a proper reply. Only CORBA SystemException may be thrown by this method. The method must return an OutputStream created by the ResponseHandler which contains the marshalled reply. A servant must not retain a reference to the ResponseHandler beyond the lifetime of a method invocation. Servant behaviour is defined as follows:

1. Determine correct method, and unmarshal parameters from InputStream.

2. Invoke method implementation.

3. If no user exception, create a normal reply using ResponseHandler.

4. If user exception occurred, create exception reply using ResponseHandler.

5. Marshal reply into OutputStream returned by ResponseHandler.

6. Return OutputStream to ORB.

Specified by:

_invoke in interface InvokeHandler

Parameters:

$method - The method name.

in - The InputStream containing the marshalled arguments.

$rh - The ResponseHandler which the servant uses to construct a proper reply

Returns:

The OutputStream created by the ResponseHandler which contains the marshalled reply

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_all_interfaces

public String[] _all_interfaces(POA poa,
                                byte[] objectId)

Description copied from class: Servant

Used by the ORB to obtain complete type information from the servant.

Specified by:

_all_interfaces in class Servant

Parameters:

poa - POA with which the servant is associated.

objectId - is the id corresponding to the object associated with this servant.

Returns:

list of type information for the object.

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_this

public ServantActivator _this()

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_this

public ServantActivator _this(ORB orb)

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For further API reference and developer documentation, see Java 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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