Providing information to an isolated hosted object via system-created variable objects

• US 20060010419A1
• Filed: 07/08/2004
• Published: 01/12/2006
• Est. Priority Date: 07/08/2004
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Haselden, J. Kirk
• Granted Patent: US 8,214,799 B2
• Time in Patent Office: Days
• US Class Current: 717/104
• CPC Class Codes: G06F 8/24 Object-oriented
• CPC Class Codes: G06F 9/54 Interprogram communication

Abstract

A system-created variable object may expose a property of an object model to an internal object that does not have access to the object model directly. The system-created variable object may provide a mechanism for communicating the external state of an object model to an internal member (object) without exposing the object model to the internal object. This feature enables an object model object to be isolated, a concept that can be advantageously exploited.

Claims

1. A system for providing information to an isolated hosted object comprising:

an object model that generates a variable object accessible to the isolated hosted object, the object model placing information inaccessible to the isolated hosted object into the variable object.

2. The system of claim 1, wherein the object model comprises a container.

3. The system of claim 2, wherein the container comprises a host object and the isolated hosted object.

4. The system of claim 1, wherein the inaccessible information is placed into the variable object in response to a request made by the isolated hosted object and the request is sent to an execution environment via a host object.

5. The system of claim 4, wherein the request is received by the execution environment from a container.

6. The system of claim 2, wherein the container comprises a data transformation package.

7. The system of claim 3, wherein the host object is a task host.

8. The system of claim 3, wherein the isolated hosted object is a task.

9. The system of claim 3, wherein the host object is a connection host.

10. The system of claim 3, wherein the isolated hosted object is a connection.

11. The system of claim 3, wherein the host object is a logging provider host.

12. The system of claim 3, wherein the isolated hosted object is a logging provider.

13. The system of claim 1, wherein the object model comprises a task, the task referencing a connection manager.

14. A method for providing information to a hosted object in an object model comprising:

instantiating an execution environment, the execution environment instantiating a host object, the host object instantiating a hosted object; and

in response to receiving a request from the hosted object for information inaccessible to the hosted object, generating a system variable object accessible to the hosted object and storing the requested information in the system variable object.

15. The method of claim 14, wherein the request is received by the execution environment.

16. The method of claim 14, wherein the system variable object is created by the execution environment.

17. The method of claim 14, wherein the request is received by the host object.

18. The method of claim 14, wherein the request is received by a container.

19. The method of claim 18, wherein the request is passed by the container to the execution environment.

20. The method of claim 14, wherein the execution environment is an application runtime.

21. The method of claim 18, wherein the container is a data transformation service package.

22. The method of claim 14, wherein the host object is a task host.

23. The method of claim 14, wherein the hosted object is a task.

24. The method of claim 14, wherein the hosted object comprises a set of functionality in a data transformation service.

25. A computer-readable medium comprising computer-executable instructions for

instantiating an execution environment, the execution environment instantiating a host object, the host object instantiating a hosted object;

in response to receiving a request from the hosted object for information not directly accessible to the hosted object, generating a system variable object accessible to the hosted object and storing the requested information in the system variable object.

26. The computer-readable medium of claim 25, comprising further computer-executable instructions for updating the system variable object in response to a change in the information not directly accessible to the hosted object.