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Distributed Object-Based Systems

Distributed Object-Based Systems. Chapter 9. Overview of CORBA. The global architecture of CORBA. Object Model. The general organization of a CORBA system. Corba Services. Overview of CORBA services. Object Invocation Models. Invocation models supported in CORBA.

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Distributed Object-Based Systems

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  1. Distributed Object-Based Systems Chapter 9

  2. Overview of CORBA • The global architecture of CORBA.

  3. Object Model • The general organization of a CORBA system.

  4. Corba Services • Overview of CORBA services.

  5. Object Invocation Models • Invocation models supported in CORBA.

  6. Event and Notification Services (1) • The logical organization of suppliers and consumers of events, following the push-style model.

  7. Event and Notification Services (2) • The pull-style model for event delivery in CORBA.

  8. Messaging (1) • CORBA's callback model for asynchronous method invocation.

  9. Messaging (2) • CORBA'S polling model for asynchronous method invocation.

  10. Interoperability • GIOP message types.

  11. Clients • Logical placement of interceptors in CORBA.

  12. Portable Object Adaptor (1) • Mapping of CORBA object identifiers to servants. • The POA supports multiple servants. • The POA supports a single servant.

  13. Portable Object Adaptor (2) My_servant *my_object; // Declare a reference to a C++ objectCORBA::Objectid_var oid; // Declare a CORBA identifier my_object = new MyServant; // Create a new C++ objectoid = poa ->activate_object (my_object); // Register C++ object as CORBA OBJECT • Changing a C++ object into a CORBA object.

  14. Agents • CORBA's overall model of agents, agent systems, and regions.

  15. Object References (1) • The organization of an IOR with specific information for IIOP.

  16. Object References (2) • Indirect binding in CORBA.

  17. Caching and Replication • The (simplified) organization of a DCS.

  18. Object Groups • A possible organization of an IOGR for an object group having a primary and backups.

  19. An Example Architecture • An example architecture of a fault-tolerant CORBA system.

  20. Security (1) • The general organization for secure object invocation in CORBA.

  21. Security (2) • The role of security interceptors in CORBA.

  22. Overview of DCOM • The general organization of ActiveX, OLE, and COM.

  23. Object Model • The difference between language-defined and binary interfaces.

  24. Tape Library and Registry • The overall architecture of DCOM.

  25. DCOM Services • Overview of DCOM services in comparison to CORBA services.

  26. Events • Event processing in DCOM.

  27. Clients • Passing an object reference in DCOM with custom marshaling.

  28. Monikers (1) • Binding to a DCOM object by means of file moniker.

  29. Monikers (2) • DCOM-defined moniker types.

  30. Active Directory • The general organization of Active Directory.

  31. Fault Tolerance • Transaction attribute values for DCOM objects.

  32. Declarative Security (1) • Authentication levels in DCOM.

  33. Declarative Security (2) • Impersonation levels in DCOM.

  34. Programmatic Security • Default authentication services supported in DCOM. • Default authorization services supported in DCOM.

  35. Globe Object Model (1) • The organization of a Globe distributed shared object.

  36. Globe Object Model (2) • The general organization of a local object for distributed shared objects in Globe.

  37. Globe Object Model (3) • Interfaces implemented by the semantics subobject of a GlobeDoc object.

  38. Globe Object Model (4) • Interfaces implemented by the semantics subobject of a GlobeDoc Object.

  39. Process-to-Object Binding • Binding a process to an object in Globe.

  40. Globe Services • Overview of possible Globe implementations of typical distributes-systems services.

  41. Communication • Invoking an object in Globe that uses active replication.

  42. Globe Server • Operations on a Globe object server.

  43. Object References and Contact Addresses (1) • The representation of a protocol layer in a stacked contact address.

  44. Object References and Contact Addresses (2) • The representation of an instance contact address.

  45. Globe Naming Service • Iterative DNS-based name resolution in Globe.

  46. Replication (1) • The interface of the replication subobject as made available to the control subobject.

  47. Replication (2) • The behavior of the control subobject as a finite state machine.

  48. Examples of Replication in Globe (1) • State transitions and actions for active replication.

  49. Examples of Replication in Globe (2) • State transitions and actions with primary-backup replication.

  50. Security (1) • The position of a security subobject in a Globe local object.

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