Event driven communication system

• US 6,704,785 B1
• Filed: 03/17/1997
• Issued: 03/09/2004
• Est. Priority Date: 03/17/1997
• Status: Expired due to Term

• Current Assignee: Vitria Technology Incorporated (Innovation Technology Group Incorporated)
• Original Assignee: Vitria Technology Incorporated (Innovation Technology Group Incorporated)
• Inventors: Skeen, Dale, Siegel, Alexander, Koo, Richard
• Primary Examiner(s): Thompson, Marc D.
• Assistant Examiner(s): VU, THONG H
• Application Number:
  US08/818,355
• Time in Patent Office: 2,549 Days
• Field of Search: 370/338, 370/397, 370/255, 455/5, 455/510, 395/182.02, 395/650, 395/200.43, 395/200.34, 345/329, 709/213, 709/217, 709/239, 709/226, 709/203, 709/216, 709/238, 709/249, 709/239.22, 709/312, 705/42, 725/38
• US Class Current: 709/227
• CPC Class Codes: G06F 9/542 Event management; Broadcasting; Multicasting; Notifications
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/288 Distributed intermediate devices, i.e. intermediate devices for interaction with other intermediate devices on the same level
• CPC Class Codes: H04L 67/567 Integrating service provisioning from a plurality of service providers
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A publish-subscribe communications system having a plurality of channels for transmitting data furnished by publishers of data to subscribers to data, each channel accepting data published to the channel and furnishing the data accepted to subscribers to the channel, a channel including facilities for accepting data for transmission by the channel from another channel.

Claims

1. A publish-subscribe communications system comprising:

a plurality of channels for transmitting data furnished by publishers of data to subscribers to data,

each channel including means for accepting data published to the channel and furnishing the data accepted to subscribers to the channel,

a channel including means for accepting data for transmission by the channel from another channel.

2. A publish-subscribe communications system as claimed in claim 1 in which the means for accepting data published to the channel and furnishing the data accepted to subscribers to the channel is a named software object.

3. A publish-subscribe communications system as claimed in claim 1 in which the means for accepting data published to the channel and furnishing the data accepted to subscribers to the channel is named to indicate a characteristic of the channel.

4. A publish-subscribe communications system as claimed in claim 1 in which the means for accepting data for transmission by the channel from another channel includes means for changing channels from which data is accepted dynamically.

5. A publish-subscribe communications system comprising:

computing hardware for executing computer processes,

a set of software objects for execution by the computing hardware including channel factory objects for creating channel objects, each channel object including means for allocating hardware and software resources for transmitting publications from one or more sources of data to one or more subscribers to data, the channel objects including means for accepting publishers and subscribers including publishers which are channel objects.

6. A publish-subscribe communications system as claimed in claim 5 in which the channel factory objects include means for naming and accessing channel objects created by the channel factory objects.

7. A publish-subscribe communications system as claimed in claim 5 in which the means for accepting publishers and subscribers includes means for storing data identifying publishers and subscribers.

8. A publish-subscribe communications system as claimed in claim 5 in which the means for accepting publishers and subscribers includes means for accepting only channel objects as publishers.

9. A publish-subscribe communications system as claimed in claim 5 in which the means for accepting publishers and subscribers includes means for recording publishers and subscribers having access to a channel object.

10. A publish-subscribe communications system as claimed in claim 5 in which the means for accepting publishers and subscribers including publishers which are channel objects includes means for changing publishers from which data is accepted dynamically.

11. A publish-subscribe communications system as claimed in claim 5 in which the means for recording publishers and subscribers having access to a channel object includes means for recording access privileges of publishers and subscribers.

12. A process for providing a publish-subscribe communications system at a first computer capable of executing event service software programs comprising the steps of:

creating channel software for establishing and administering transmission channels between publishers and subscribers,

allocating resources for accepting data published by publishers to the transmission channel,

providing access to the transmission channel to publishers and subscribers,

providing access to the transmission channel to publishers which are other transmission channels,

storing data published by publishers to the channel, and

transferring data published by publishers to subscribers which are connected to the channel.

13. A process for providing a publish-subscribe communications system as claimed in claim 12 in which the step of providing access to the transmission channel to publishers and subscribers comprises providing access to the transmission channel only to publishers which are other transmission channels.

14. A process for providing a publish-subscribe communications system as claimed in claim 13 in which the step of providing access to the transmission channel only to publishers allows changing publishers dynamically.

15. A process for providing a publish-subscribe communications system as claimed in claim 13 in which the channel software for establishing and administering transmission channels between computers is a channel object including methods for utilizing data and instructions for establishing and administering transmission channels between computers.

16. A process for providing a publish-subscribe communications system as claimed in claim 15 a channel object includes methods for recording publishers and subscribers having access to a channel object.

17. A process for providing a publish-subscribe communications system as claimed in claim 16 a channel object includes methods for recording access rights of publishers and subscribers having access to a channel object.

18. A process for providing a publish-subscribe communications system as claimed in claim 13 in which the step of allocating resources for accepting data published by publishers to the transmission channel includes allocating persistent storage resources to the transmission channel.

19. A process for providing a publish-subscribe communications system as claimed in claim 13 further comprising an initial step of creating channel factory software, the channel factory software including software for creating channel software.

20. A process for providing a publish-subscribe communications system as claimed in claim 19 in which the channel factory software is a channel factory object including methods for utilizing data and instructions for creating channel software.