Method and apparatus for enabling application programs to communicate with network clients and servers

• US 6,009,464 A
• Filed: 10/16/1995
• Issued: 12/28/1999
• Est. Priority Date: 09/20/1995
• Status: Expired due to Term

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Kessler, Peter B., Hamilton, Graham, Shaio, Sami, Levy, Jacob Y., Nisewanger, Jeffrey Donald, Kleiman, Steven Robert
• Primary Examiner(s): Maung, Zarni
• Assistant Examiner(s): Winder, Patrice L.
• Application Number:
  US08/543,674
• Time in Patent Office: 1,534 Days
• Field of Search: 395/200.02, 395/683, 395/680, 395/712, 395/200.06, 395/200.03, 395/200.09, 395/200.33, 395/200.57, 395/200.6, 395/684, 395/200.47 , 395/200.48, 395/200.49, 395/701, 709/304, 709/203, 709/217, 709/218, 709/219, 709/300, 709/205, 709/230
• US Class Current: 709/219
• CPC Class Codes: G06F 9/465 Distributed object oriented systems remote method invocation [RMI] G06F9/548
• CPC Class Codes: G06F 9/54 Interprogram communication

Abstract

A method for enabling an application program to communicate with a network server, includes the steps of downloading a document from a document server to the application program, downloading code from a code server associated with the document server to the application program, the code including a network protocol handler for the network server, and using the network protocol handler to communicate with the network server.

Claims

1. A method for enabling an application program to communicate with a network server, the method comprising:

downloading a document from a document server to the application program;

downloading code from a code server associated with the document server to the application program, the code including platform independent code implementing a network protocol for the network server; and

using the network protocol to communicate with the network server.

2. The method of claim 1, further comprising:

invoking an object in the network server using the code.

3. The method of claim 1, further comprising:

using a network name server to locate the network server.

4. The method of claim 1, further comprising:

using an object name server in the network server to locate an object.

5. The method of claim 1, wherein the document server and the code server are in the same address space.

6. The method of claim 1, wherein the network server, the document server and the code server are in the same address space.

7. The method of claim 1, wherein the code also includes a stub for an object within the network server.

8. The method of claim 1, wherein the code is machine independent.

9. The method of claim 8, wherein the platform independent code comprises bytecodes.

10. The method of claim 1, wherein the network protocol is different from a default network protocol used by the application program.

11. The method of claim 1, wherein the step of downloading code is performed if it is determined that the application program needs to communicate with the network server.

12. The method of claim 1, wherein the platform independent code implementing the network protocol and the application program are in the same address space.

13. A distributed computing system, including a network server, comprising:

a document server for storing a plurality of documents;

a code server for storing a plurality of code associated with the plurality of documents, the plurality of code including platform independent code implementing a network protocol; and

an application program for loading a document from the plurality of documents, for loading code from the plurality of code associated with the document, and for using the network protocol implemented by the platform independent code to communicate with the network server.

14. The distributed computing system of claim 13, wherein the code invokes an object within the network server.

15. The distributed computing system of claim 13, wherein the document server and the code server are in the same address space.

16. The distributed computing system of claim 13,

wherein the network server is object-oriented and includes an object;

and

wherein the code includes a stub for an object within the network server.

17. The distributed computing system of claim 13, wherein the application program loads the code if it is determined that the application program needs to communicate with the network server.

18. The distributed computing system of claim 13, wherein the platform independent code implementing the network protocol and the application program are in the same address space.

19. A computer program that enables an application program to communicate with a network server, comprising:

code that downloads a document from a document server;

code that downloads downloadable code from a code server associated with the document server, the downloadable code including platform independent code implementing a network protocol for the network server; and

code that uses the network protocol to communicate with the network server;

wherein the codes are stored on a tangible medium.

20. The computer program of claim 19, further comprising code that invokes an object in the network server using the downloadable code.

21. The computer program of claim 19, wherein the downloadable code also includes a stub for an object within the network server.

22. The computer program of claim 19, wherein the downloadable code is machine independent.

23. The computer program of claim 19, wherein the network protocol is different from a default network protocol used by the application program.

24. The computer program of claim 19, further comprising code that determines whether the application program needs to communicate with the network server.

32. The method of claim 20, further comprising:

publishing a network server name for the application program in a network name server.

25. An apparatus for enabling an application program to communicate with a network server, the apparatus comprising:

a machine configured to download a document from a document server to the application program;

a machine configured to download code from a code server associated with the document server to the application program, the code including platform independent code implementing a network protocol for the network server; and

a machine configured to use the network protocol to communicate with the network server.

26. The apparatus of claim 25, further comprising:

a machine configured to use a network name server to locate the network server using the code.

27. The apparatus of claim 25, further comprising:

a machine configured to use an object name server in the network server to locate an object using the code.

28. The apparatus of claim 25, wherein the code also includes a stub for an object within the network server.

29. The apparatus of claim 25, wherein the platform independent code comprises bytecodes.

30. A method for enabling an application program to receive communications from a network client, the method comprising:

downloading a document from a document server to the application program;

downloading code from a code server associated with the document server to the application program, the code including platform independent code implementing a network protocol for the network client, and

using the network protocol to receive communications from the network client.

31. The method of claim 30, further comprising:

calling an object in the application program.

33. The method of claim 30, wherein the application program includes an object;

the method further comprising;

publishing the object name in an object name server.

34. The method of claim 30, wherein the document server and the code server are in the same address space.

35. The method of claim 30, wherein the network client, the document server and the code server are in the same address space.

36. The method of claim 30, wherein the code also includes a skeleton for an object to be implemented by the application program.

37. The method of claim 30, wherein the code is machine independent.

38. The method of claim 37, wherein the platform independent code comprises bytecodes.

39. The method of claim 30, wherein network protocol is different from a default network protocol used by the application program.

40. The method of claim 30, wherein the step of downloading code is performed if it is determined that the application program needs to receive communications from the network client.

41. The method of claim 30, wherein the platform independent code implementing the network protocol and the application program are in the same address space.

42. A distributed computing system, including a network client, comprising:

a document server for storing a plurality of documents;

a code server for storing a plurality of code associated with the plurality of documents, the plurality of code including platform independent code implementing a network protocol; and

an application program for loading a document from the plurality of documents, for loading code from the plurality of code associated with the document, and for using the network protocol implemented by the platform independent code to receive communications from the network client.

43. The distributed computing system of claim 42, wherein the network client calls an object within the application program.

44. The distributed computing system of claim 42, wherein the document server and the code server are in the same address space.

45. The distributed computing system of claim 42,

wherein the code includes a skeleton for an object within the application program.

46. The distributed computing system of claim 42, wherein the application program loads the code if it is determined that the application program needs to receive communications from the network client.

47. The distributed computing system of claim 42, wherein the platform independent code implementing the network protocol and the application program are in the same address space.

48. A computer program that enables an application program to receive communications from a network client, comprising:

code that downloads a document from a document server;

code that downloads code from a code server associated with the document server, the code including platform independent code implementing a network protocol for the network client; and

code that uses the network protocol to receive communications from the network client;

wherein the codes are stored on a tangible medium.

49. The computer program of claim 48, further comprising code that invokes an object in the application program in response to the communications from the network client.

50. The computer program of claim 48, wherein the code from the code server also includes a skeleton for an object to be implemented by the application program.

51. The computer program of claim 48, wherein the code from the code server is machine independent.

52. The computer program of claim 48, wherein the network protocol is different from a default network protocol used by the application program.

53. The computer program of claim 48, further comprising code that determines whether the application program needs to receive communications from the network client.

54. An apparatus for enabling an application program to receive communications from a network client, the apparatus comprising:

a machine configured to download a document from a document server to the application program;

a machine configured to download code from a code server associated with the document server to the application program, the code including platform independent code implementing a network protocol for the network client; and

a machine configured to use the network protocol to receive communications from the network client.

55. The apparatus of claim 54, further comprising:

a machine configured to publish a network server name for the application program in a network name server.

56. The apparatus of claim 54, wherein the application program includes an object;

the apparatus further comprising;

a machine configured to publish the object name in an object name server.

57. The apparatus of claim 54, wherein the code also includes a skeleton for an object to be implemented by the application program.

58. The apparatus of claim 54, wherein the platform independent code comprises bytecodes.

59. A computer system for enabling an application program to receive communications from a network client, the computer system including:

a processor; and

a computer readable memory comprising;

code that directs the computer system to receive data from a document server;

code that directs the computer system to receive platform independent code implementing a network protocol for the network client; and

code that directs the computer system to use the network protocol handler to receive communications from the network client.

60. A computer system of claim 59, wherein the computer readable memory further comprises code that invokes an object in the application program in response to the communications from the network client.

61. A computer system of claim 59, wherein the computer readable memory further comprises code that publishes a name of an object in an object name server.

62. A computer system of claim 59, wherein the code also includes a skeleton for an object to be implemented by the application program.

63. A computer system of claim 59, wherein the platform independent code comprises bytecodes.

64. A computer system of claim 59, wherein the computer readable memory further comprises code for determining whether the application program needs to receive communications from the network client.

65. A computer system for enabling an application program to communicate with a network server, the computer system including:

a processor; and

a computer readable memory comprising;

code that directs the processor to receive data from a document server;

code that directs the processor to receive platform independent code implementing a network protocol for the network server; and

code that directs the processor to use the network protocol to communicate with the network server.

66. A computer system of claim 65, wherein the computer readable memory further comprises code that invokes an object in the network server using the code.

67. A computer system of claim 65, wherein the computer readable memory further comprises code that uses a network name server to locate the network server.

68. A computer system of claim 65, wherein the code also includes a stub for an object within the network server.

69. A computer system of claim 65, wherein the platform independent code comprises bytecodes.

70. A computer system of claim 65, wherein the computer readable memory further comprises code for determining whether the application program needs to communicate with the network server.