SUBSCRIBER DEVICE AND SUBSCRIPTION MANAGEMENT THAT SUPPORTS REAL-TIME COMMUNICATION

• US 20100250677A1
• Filed: 03/26/2010
• Published: 09/30/2010
• Est. Priority Date: 03/31/2009
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Chuan Feng, Li, Xing, Liang Xiao, Kahan, Eduardo T., Zhou, Yu Chen
• Granted Patent: US 8,543,646 B2
• Time in Patent Office: Days
• US Class Current: 709/204
• CPC Class Codes: H04L 12/1859 adapted to provide push services, e.g. data channels
• CPC Class Codes: H04L 51/00 User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
• CPC Class Codes: H04L 51/04 Real-time or near real-time messaging, e.g. instant messaging [IM]
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/306 User profiles
• CPC Class Codes: H04L 67/54 Presence management, e.g. monitoring or registration for receipt of user log-on information, or the connection status of the users
• CPC Class Codes: H04L 67/55 Push-based network services

Abstract

Real-time communication for resource content comprises selecting by a subscriber device, an event topic based on an event topic list, creating for the selected event topic, a topic path for receiving a notification event related to the selected event topic, and sending path information of the created topic path as part of identification information with the selected event topic to a resource content publishing device. Real-time communication also comprises receiving by the resource content publishing device, the identification information and the selected event topic, and adding the identification information and the selected event topic to an event topic subscription search table. Real-time communication also comprises, if new resource content is available, obtaining, based on the event topic subscription search table, identification information of a subscriber device subscribing to an event topic related to the new resource content and sending a notification event including the new resource content to the subscriber device.

Claims

1. A subscription management method for resource content, comprising:

selecting an event topic based on an event topic list by a subscriber device

creating for the selected event topic, by the subscriber device, a topic path for receiving a notification event related to the selected event topic;

sending, by the subscriber device, path information of the created topic path as part of identification information of the subscriber device, along with the selected event topic, to a resource content publishing device; and

receiving, by the subscriber device, the notification event sent by the resource content publishing device to the subscriber device according to the identification information of the subscriber device.

2. The subscription management method for resource content according to claim 1, further comprising:

storing the selected event topic and a Web address of the resource content publishing device at the subscriber device, wherein the Web address of the resource content publishing device is for providing the notification event related to the event topic;

creating, by the subscriber device, a reversed event, the reversed event comprising reversed event content edited by the subscriber device and an event topic which is stored by the subscriber device and is the same as that of a corresponding notification event; and

sending, by the subscriber device, the reversed event to the resource content publishing device according to the Web address of the resource content publishing device.

3. The subscription management method for resource content according to claim 1, wherein:

the event topic list comprises an event topic to be selected and identification information of a resource content publishing device providing a notification event related to the event topic to be selected;

the identification information of the resource content publishing device comprises a Web address of the resource content publishing device and path information of a topic path at the resource content publishing device for receiving a reversed event of a corresponding event topic; and

selecting an event topic based on the event topic list further comprises obtaining identification information of the resource content publishing device providing the notification event related to the selected event topic;

further comprising;

creating, by the subscriber device, a reversed event, the reversed event comprising reversed event content edited by the subscriber device; and

sending, by the subscriber device, the reversed event to the resource content publishing device according to the identification information of the resource content publishing device.

4. The subscription management method for resource content according to claim 1, wherein receiving, by the subscriber device, the notification event, comprises:

storing the received notification in a topic path directory folder created for the event topic, so as to receive each updated notification event related to the event topic as a corresponding new file in the topic path directory folder.

5. The subscription management method for resource content according to claim 1, wherein receiving, by the subscriber device, the notification event, comprises:

using at least one field in at least one of;

a document and a database, under the topic path related to the event topic such that each notification event related to the event topic is added to a corresponding part of the associated one of the document or database.

6. The subscription management method for resource content according to claim 1, wherein receiving, by the subscriber device, the notification event, comprises:

receiving the notification at a default path; and

performing at least one of;

distributing the notification event to a corresponding topic path according to the event topic of the received notification event and a corresponding search table of topic paths; and

consuming the notification event directly in the default path.

7. The subscription management method for resource content according to claim 1, wherein:

sending, by the subscriber device, path information of the created topic path comprises identifying path information by defining paths according to at least one rule, such that the resource content publishing device can derive the appropriate path for a corresponding event notification based upon obtaining the corresponding rule.

8. The subscription management method for resource content according to claim 1, further comprising:

building, by the subscriber device subsequent to creating the topic path, a search table for the selected event topic and the corresponding topic path and sending the identification information constituted by a Web address of the subscriber device along with the selected event topic to the resource content publishing device;

wherein;

receiving, by the subscriber device, the notification event sent by the resource content publishing device, comprises;

receiving, by the subscriber device, the notification event comprising the new resource content and the event topic sent by the resource content publishing device according to the Web address of the subscriber device;

obtaining a topic path corresponding to the notification event with reference to the search table for the event topic and the corresponding topic path; and

distributing the new resource content in the notification event to a corresponding topic path.

9. A real-time communication method for resource content, comprising:

receiving from a subscriber device, by a resource content publishing device, identification information of the subscriber device and an event topic, wherein the identification information comprises path information defining a topic path for receiving a notification event related to the selected event topic;

adding the identification information of the subscriber device and the selected event topic to an event topic subscription search table;

obtaining by the resource content publishing device, the identification information of a subscriber device subscribing to an event topic related to new resource content, where the identification information is obtained from the event topic subscription search table, if new resource content is available; and

sending, by the resource content publishing device, a notification event comprising the new resource content to the subscriber device according to the identification information of the subscriber device.

10. The real-time communication method for resource content according to claim 9, further comprising:

creating a corresponding topic path for receiving a reversed event related to the event topic at the resource content publishing device, a path name of which is the same as that of the topic path of the subscriber device for receiving a notification event related to the same event topic; and

receiving, by the resource content publishing device, a reversed event that was sent by the subscriber device according to a Web address of the resource content publishing device and corresponding topic path information, where the reversed event, created by the subscriber device, comprises reversed event content edited by the subscriber device.

11. The real-time communication method for resource content according to claim 9, further comprising:

using the event topic as at least part of the path name of the topic path at the subscriber device and the resource content device for receiving the event related to the same event topic.

12. The real-time communication method for resource content according to claim 9, wherein, sending, by the resource content publishing device, a notification event comprises:

using the notification event as feed information in RSS or Atom format, and sending the feed information to the subscriber device according to the RESTful protocol or the AtomPub protocol.

13. The real-time communication method for resource content according to claim 12, further comprising obtaining the new resource content by obtaining feed information in RSS or Atom format from an external resource content generator by at least one of:

pulling and receiving, feed information in RSS or Atom format from an external resource content generator.

14. The real-time communication method for resource content according to claim 12, further comprising:

receiving, by the resource content publishing device, a reversed event created by the subscriber device, the reversed event comprising reversed event content edited by the subscriber device that has been converted into feed information in RSS or Atom format.

15. The real-time communication method for resource content according to claim 9, further comprising:

generating for a predetermined event topic, by the resource content publishing device, event change history information related to the predetermined event topic; and

sending, by the resource content publishing device, a link to the event change history information to a subscriber device subscribing to the predetermined event topic, in order for the subscriber device to obtain the event change history information via the link.

16. The real-time communication method for resource content according to claim 9, wherein:

the event topic selected by the subscriber device is a complex event topic set constituted by at least two separate event topics; and

preceding the resource content publishing device obtaining based on the event topic subscription search table, the identification information of the subscriber device, the method further comprises;

determining, by the resource content publishing device, if new resource content is available, whether an event topic of the new resource content belongs to the complex event topic set; and

creating, by the resource content publishing device, if it is determined that the event topic of the new resource content belongs to the complex event topic set, a complex event by applying a predefined rule describing a relation between the separate events related to the complex event topic set onto the new resource content, so as to send the complex event to the subscriber device after obtaining the identification information of the subscriber device.

17. A computer program product to implement real-time communication for resource content, comprising:

a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising;

computer readable program code configured to receive, from a subscriber device, identification information of the subscriber device and an event topic, wherein the identification information comprises path information defining a topic path for receiving a notification event related to the selected event topic;

computer readable program code configured to add the identification information of the subscriber device and the selected event topic to an event topic subscription search table;

computer readable program code configured to obtain, by the resource content publishing device, the identification information of a subscriber device subscribing to an event topic related to new resource content, where the identification information is obtained from the event topic subscription search table, if new resource content is available; and

computer readable program code configured to send, by the resource content publishing device, a notification event comprising the new resource content to the subscriber device according to the identification information of the subscriber device.

18. The computer program product according to claim 17, further comprising:

computer readable program code configured to create a corresponding topic path for receiving a reversed event related to the event topic at the resource content publishing device, a path name of which is the same as that of the topic path of the subscriber device for receiving a notification event related to the same event topic; and

computer readable program code configured to receive, by the resource content publishing device, a reversed event that was sent by the subscriber device according to a Web address of the resource content publishing device and corresponding topic path information, where the reversed event, created by the subscriber device, comprises reversed event content edited by the subscriber device.

19. The computer program product according to claim 17, wherein:

the computer readable program code configured to send, by the resource content publishing device, a notification event, comprises computer readable program code configured to use the notification event as feed information in RSS or Atom format, and sending the feed information to the subscriber device according to the RESTful protocol or the AtomPub protocol;

further comprising;

computer readable program code configured to obtain the new resource content by obtaining feed information in RSS or Atom format from an external resource content generator by at least one of;

pulling and receiving, feed information in RSS or Atom format from an external resource content generator.

20. The computer program product according to claim 17, further comprising:

computer readable program code configured to receive, by the resource content publishing device, a reversed event created by the subscriber device, the reversed event comprising reversed event content edited by the subscriber device that has been converted into feed information in RSS or Atom format.

21. The computer program product according to claim 17, further comprising:

computer readable program code configured to generate for a predetermined event topic, by the resource content publishing device, event change history information related to the predetermined event topic; and

computer readable program code configured to send, by the resource content publishing device, a link to the event change history information to a subscriber device subscribing to the predetermined event topic, in order for the subscriber device to obtain the event change history information via the link.

22. The computer program product according to claim 17, wherein the event topic selected by the subscriber device is a complex event topic set constituted by at least two separate event topics and preceding the resource content publishing device obtaining, based on the event topic subscription search table, the identification information of the subscriber device, the computer program product further comprises:

computer readable program code configured to determine, by the resource content publishing device, if new resource content is available, whether an event topic of the new resource content belongs to the complex event topic set; and

computer readable program code configured to create, by the resource content publishing device, if it is determined that the event topic of the new resource content belongs to the complex event topic set, a complex event by applying a predefined rule describing a relation between the separate events related to the complex event topic set onto the new resource content, so as to send the complex event to the subscriber device after obtaining the identification information of the subscriber device.

23. A method to implement an intermediate connected between a resource content publishing device and a subscriber device in a real-time communication for resource content, comprising:

receiving, by the intermediate, identification information of a subscriber device from the subscriber device;

receiving, by the intermediate, an event topic selected by the subscriber device based on an event topic list, wherein, the identification information comprises path information of a topic path created by the subscriber device for receiving a notification event related to the selected event topic;

adding the identification information of the subscriber device and the selected event topic to an event topic subscription search table;

obtaining based on the search table, the identification information of the subscriber device subscribing to an event topic related to the new resource content when new resource content is available; and

sending a notification event including the event topic and the new resource content to the subscriber device.

24. The method according to claim 23, further comprising:

obtaining event change history information from the resource content publishing device;

storing the obtained event change history information in a storage, and

sending a link to the event change history information to a subscriber device subscribing to the predetermined event topic, in order for the subscriber device to obtain the event change history information via the link.

25. The method according to claim 23, wherein:

the event topic selected by the subscriber device is a complex event topic set constituted by at least two separate event topics, the intermediate device comprises a complex event processing apparatus for processing a complex event;

further comprising;

determining whether an event topic of new resource content obtained by the resource content publishing device belongs to the complex event topic set; and

creating a complex event by applying a predefined rule describing a relation between the separate events related to the complex event topic set onto the new resource content if it is determined that the event topic of the new resource content belongs to the complex event topic set.