Method and system of typing resources in a distributed system

• US 7,028,035 B1
• Filed: 12/08/2000
• Issued: 04/11/2006
• Est. Priority Date: 12/08/2000
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Karp, Alan H., Govindarajan, Kannan, Shama, Shamik, Umamaheshwaran, Shankar, Banerji, Arindam, Sarukkai, Sekhar R.
• Primary Examiner(s): Coby, Frantz
• Assistant Examiner(s): Nguyen, Cindy
• Application Number:
  US09/733,012
• Time in Patent Office: 1,950 Days
• Field of Search: 707/10, 707/3, 707/102
• US Class Current: 707/781
• CPC Class Codes: G06F 2209/462 Lookup
• CPC Class Codes: G06F 2209/463 Naming
• CPC Class Codes: G06F 2209/5015 Service provider selection
• CPC Class Codes: G06F 9/465 Distributed object oriented systems remote method invocation [RMI] G06F9/548
• CPC Class Codes: G06F 9/5027 the resource being a machine, e.g. CPUs, Servers, Terminals
• CPC Class Codes: Y10S 707/966 Distributed
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface

Abstract

A system and method for typing resources in a distributed system is provided which enables flexible searching mechanisms for finding distributed resources. The distributed system includes at least three types of resources: service, vocabulary and contract resources. The service resource includes the implementation logic for the service. A contract resource contains interface data used for accessing resources. The vocabulary resource contains an attribute schema defining attributes used to describe resources. Each resource—including service, vocabulary and contract resources—is typed by associating one or more vocabulary resources and one or more contract resources with the resource. The vocabulary resources explain the meaning of attribute lists describing the resource and enable the resource to be discovered. The contract resources provide data for accessing the resource. Because vocabulary and contract resources are themselves resources, they are also typed by vocabulary and contract resources and are, accordingly, discoverable and accessible. Typing resources with vocabularies and contracts that are themselves discoverable resources, provides a structural mechanism for supporting robust resource discovery processes suitable for large, loosely-coupled distributed systems.

Claims

1. A method of typing resources, including one or more first resources, in a distributed system executable over a computer network, the method comprising:

for each of the one or more first resources, associating one or more first descriptions with at least one corresponding first resource from the one or more first resources, wherein at least one of the one or more first resources is discoverable using a corresponding first description;

for each of the one or more first descriptions, associating one or more first explanations with a corresponding first description of the one or more first descriptions, wherein the first resource is discoverable using a corresponding first explanation of the one or more first explanations, and wherein the resources further include second resources; and

associating one or more second descriptions with the corresponding first explanation for each of the one or more first explanation that is not supplied by a distributed infrastructure associated with the distributed system, wherein the corresponding first explanation is discoverable using the second description; and

for each second description, associating a second explanation with the second description, wherein the corresponding first explanation is discoverable using the second explanation.

2. The method of claim 1, wherein one or more of the one or more first explanations are supplied by the distributed infrastructure.

3. The method of claim 1, wherein the one or more first explanations are second resources separate from the one or more first resources.

4. The method of claim 1, wherein:

each first description includes one or more first attributes describing the first resource; and

for each first description, each first explanation includes one or more first attribute properties explaining the first attributes.

5. The method of claim 1, wherein one or more of the second explanations are supplied by the distributed infrastructure.

6. The method of claim 1, wherein:

each second description includes one or more second attributes describing the corresponding first explanation; and

for each second description, each second explanation explaining the second description includes one or more second attribute properties defining the second attributes.

7. The method of claim 1, wherein the resources further include third resources, further comprising:

for each first resource, associating one or more first access data for accessing the corresponding first resource, wherein the first resource is discoverable using the first access data.

8. The method of claim 7, wherein one or more of the first access data are supplied by the distributed infrastructure.

9. The method of claim 7, wherein the first access data are third resources.

11. The method of claim 7, wherein the first access data are fourth resources.

10. A method of typing resources, including one or more first resources, in a distributed system executable over a computer network, the method comprising:

for each of the one or more first resources, associating one or more first descriptions with at least one corresponding first resource of the one or more first resources, wherein at least one of the one or more first resources is discoverable using a corresponding first description; and

for each of the one or more first descriptions, associating one or more first explanations with a corresponding first description of the one or more first descriptions, wherein the first resource is discoverable using a corresponding first explanation of the one or more first explanations, wherein the resources further include third resources;

for each first resource, associating one or more first access data for accessing the first resource, wherein the first resource is discoverable using the first access data, and wherein the resources further include fourth resources;

for each first access data, if the first access data is not supplied by the distributed infrastructure;

associating a third description with the first access data, wherein the first access data is discoverable using the third description; and

associating a third explanation explaining the third description, wherein the access data is discoverable using the third explanation.

12. The method of claim 10, wherein:

each third description includes one or more third attributes describing the first access data; and

for each third description, each third explanation explaining the third description includes one or more third attribute properties defining the third attributes.

13. The method of claim 10, wherein the resources further include fifth resources, further comprising:

for each first access data, if the first access data is not supplied by the distributed infrastructure, then providing a second access data supplied by the distributed infrastructure for accessing the first access data.

14. The method of claim 13, wherein the second access data is a fifth resource.

15. A computer system for typing resources in a distributed system executable over a computer network, the distributed system including one or more first resources, the system comprising:

at least two computers connected over the computer network; and

a computer program executable on each computer generating processes accessible to at least one other computer over the computer network;

wherein the computer programs further comprises computer instructions for;

associating one or more first descriptions with corresponding first resources from the one or more first resources, wherein at least one of the one or more first resources is discoverable using a corresponding first description of the one or more first descriptions;

associating one or more first explanations with the corresponding first description, wherein one or more of the first resources is discoverable using a corresponding first explanation, and wherein the resources further include second resources, and

for each of the one or more first explanations that is not supplied by a distributed infrastructure associated with the distributed system;

associating one or more second descriptions with the corresponding first explanation, wherein the corresponding first explanation is discoverable using the second description; and

for each second description, associating a second explanation with the second description, wherein the corresponding first explanation is discoverable using the second explanation.

16. The computer system of claim 15, wherein one or more of the one or more first explanations are supplied by the distributed infrastructure.

17. The computer system of claim 15, wherein the one or more first explanations are second resources.

18. The computer system of claim 15, wherein:

each of the one or more first description includes one or more first attributes describing the corresponding first resource; and

for each first description, each first explanation explaining the first description includes one or more first attribute properties defining the first attributes.

19. The computer system of claim 15, wherein one or more of the second explanations are supplied by the distributed infrastructure.

20. The computer system of claim 15, wherein:

each second description includes one or more second attributes describing the first explanation;

for each second description, each second explanation explaining the second description includes one or more second attribute properties defining the second attributes.

21. The computer system of claim 15, wherein the resources further include third resources, and the computer program further comprises computer instructions for:

associating one or more first access data for accessing the corresponding first resource, wherein the corresponding first resource is discoverable using the first access data.

22. The computer system of claim 21, wherein one or more of the first access data d by the distributed infrastructure.

23. The computer system of claim 21, wherein the first access data are third resources.

25. The computer system of claim 21, wherein the first access data are fourth resources.

24. A computer system for typing resources in a distributed system executable over a computer network, the distributed system including one or more first resources, the system comprising:

at least two computers connected over the computer network; and

a computer program executable on each computer generating processes accessible to at least one other computer over the computer network;

wherein the computer programs further comprises computer instructions for;

associating one or more first descriptions with corresponding first resources of the one or more first resources, wherein at least one of the one or more first resources is discoverable using a corresponding first description of the one or more first descriptions;

associating one or more first explanations with the corresponding first description, wherein at least one of the one or more first resources is discoverable using a corresponding first explanation of the one or more first explanations, wherein the resources further include third resources;

associating one or more first access data for accessing the one or more first resources, wherein the first resource is discoverable using the first access data, and wherein the resources further include fourth and the computer program further comprises computer instructions for;

for each first access data, if the first access data is not supplied by the distributed restructure, then;

associating a third description with the first access data, wherein the first access data is discoverable using the third description; and

associating a third explanation explaining the third description, wherein the access data is discoverable using the third explanation.

26. The computer system of claim 24, wherein:

each third description includes one or more third attributes describing the first access data;

for each third description, each third explanation explaining the third description includes one or more third attribute properties defining the third attributes.

27. The computer system of claim 24, wherein the computer program further comprises computer instructions for:

for each first access data, if the first access data is not supplied by the distributed infrastructure, then providing a supplied by the distributed infrastructure second access data for accessing the first access data.

28. The computer system of claim 27, wherein the supplied by the distributed infrastructure second access data is a fifth resource.