Abstract: In a workload managed system comprising a plurality of server processes each capable of supporting a given program entity, such as an Enterprise JavaBeans™ specified stateful session bean, a stateful session bean instance is passivated, by writing it to a bean store, on completion of a unit of work. On next use the session bean is reactivated, by reading it from the bean store, in any one of the plurality of servers thereby allowing workload management for stateful session beans. A routing table is maintained, in non-volatile mass storage, that contains location information for units of work and stateful session bean instances, used to maintain unit of work-server affinity for the lifetime of the unit of work Stateful session beans instances are associated with ID keys that include a flag that is used to indicate whether or not the routing table contains location information for the bean instance.

Abstract: A method, system and apparatus for performing selective data processing based upon a static analysis of the code of a compiled object. A compiled object, for example an enterprise bean, can be analyzed to determine how individual methods in the enterprise bean access specific objects. Those specific objects can include, for instance, data members of a class, or class objects passed into one or more individual methods of the enterprise bean. Where the individual methods of the enterprise bean do not mutate or otherwise change the state of the specific objects, those objects can be accessed by reference only. Importantly, where the specific objects are data fields linked to a table in a database as managed by a container managed persistence (CMP) bean, an update to the table will not be required when the static analysis of the enterprise bean otherwise indicates that the data fields are merely accessed, but not updated.

Abstract: A method for calling a software method in a called CORBA application by a caller software method in a caller CORBA application in a process of a computer system is disclosed. The caller software method calls a software method in a CORBA stub sending a parameter which is created using a classloader of the caller application. The CORBA stub software method calls a software method in a dynamic proxy sending the parameter. The dynamic proxy software method calls an ORB sending the parameter. The ORB serializes the parameter and returns it to the dynamic proxy software method. The dynamic proxy software method calls the ORB sending the serialized parameter. The ORB deserializes the serialized parameter using a classloader of the called application and returns it to the dynamic proxy software method. The dynamic proxy software method calls the called software method sending the deserialized parameter.

Abstract: A method, system and apparatus for performing selective data processing based upon a static analysis of the code of a compiled object. A compiled object, for example an enterprise bean, can be analyzed to determine how individual methods in the enterprise bean access specific objects. Those specific objects can include, for instance, data members of a class, or class objects passed into one or more individual methods of the enterprise bean. Where the individual methods of the enterprise bean do not mutate or otherwise change the state of the specific objects, those objects can be accessed by reference only. Importantly, where the specific objects are data fields linked to a table in a database as managed by a container managed persistence (CMP) bean, an update to the table will not be required when the static analysis of the enterprise bean otherwise indicates that the data fields are merely accessed, but not updated.

Abstract: In a workload managed system comprising a plurality of server processes each capable of supporting a given program entity, such as an Enterprise JavaBeans™ specified stateful session bean, a stateful session bean instance is passivated, by writing it to a bean store, on completion of a unit of work. On next use the session bean is reactivated, by reading it from the bean store, in any one of the plurality of servers thereby allowing workload management for stateful session beans. A routing table is maintained, in non-volatile mass storage, that contains location information for units of work and stateful session bean instances, used to maintain unit of work-server affinity for the lifetime of the unit of work Stateful session beans instances are associated with ID keys that include a flag that is used to indicate whether or not the routing table contains location information for the bean instance.

Abstract: A method for calling a software method in a called CORBA application by a caller software method in a caller CORBA application in a process of a computer system is disclosed. The caller software method calls a software method in a CORBA stub sending a parameter which is created using a classloader of the caller application. The CORBA stub software method calls a software method in a dynamic proxy sending the parameter. The dynamic proxy software method calls an ORB sending the parameter. The ORB serializes the parameter and returns it to the dynamic proxy software method. The dynamic proxy software method calls the ORB sending the serialized parameter. The ORB deserializes the serialized parameter using a classloader of the called application and returns it to the dynamic proxy software method. The dynamic proxy software method calls the called software method sending the deserialized parameter.