Package org.omg.PortableServer
Interface ServantLocatorOperations
- All Superinterfaces:
ServantManagerOperations
- All Known Subinterfaces:
ServantLocator
- All Known Implementing Classes:
_ServantLocatorStub
,InitialGroupInfoService.InitialGISServantLocator
,ServantLocatorPOA
,ServantLocatorPOATie
When the POA has the NON_RETAIN policy it uses servant
managers that are ServantLocators. Because the POA
knows that the servant returned by this servant
manager will be used only for a single request,
it can supply extra information to the servant
manager's operations and the servant manager's pair
of operations may be able to cooperate to do
something different than a ServantActivator.
When the POA uses the ServantLocator interface,
immediately after performing the operation invocation
on the servant returned by preinvoke, the POA will
invoke postinvoke on the servant manager, passing the
ObjectId value and the Servant value as parameters
(among others). This feature may be used to force
every request for objects associated with a POA to
be mediated by the servant manager.
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Method Summary
Modifier and TypeMethodDescriptionvoid
postinvoke
(byte[] oid, POA adapter, String operation, Object the_cookie, Servant the_servant) This operation is invoked whenever a servant completes a request.preinvoke
(byte[] oid, POA adapter, String operation, CookieHolder the_cookie) This operations is used to get a servant that will be used to process the request that caused preinvoke to be called.
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Method Details
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preinvoke
Servant preinvoke(byte[] oid, POA adapter, String operation, CookieHolder the_cookie) throws ForwardRequest This operations is used to get a servant that will be used to process the request that caused preinvoke to be called.- Parameters:
oid
- the object id associated with object on which the request was made.adapter
- the reference for POA in which the object is being activated.operation
- the operation name.the_cookie
- an opaque value that can be set by the servant manager to be used during postinvoke.- Returns:
- Servant used to process incoming request.
- Throws:
ForwardRequest
- to indicate to the ORB that it is responsible for delivering the current request and subsequent requests to the object denoted in the forward_reference member of the exception.
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postinvoke
This operation is invoked whenever a servant completes a request.- Parameters:
oid
- the object id ssociated with object on which the request was made.adapter
- the reference for POA in which the object was active.operation
- the operation to invokethe_cookie
- an opaque value that contains the data set by preinvoke.the_servant
- reference to the servant that is associated with the object.
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