Just-in-time publishing via a publish/subscribe messaging system using a subscribe-event model

• US 7,461,062 B2
• Filed: 12/01/2004
• Issued: 12/02/2008
• Est. Priority Date: 12/01/2004
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Stewart, Eben P., Van Der Meulen, Michael, Stokes, Matthew
• Primary Examiner(s): Wong; Dong
• Assistant Examiner(s): HO, BINH VAN
• Application Number:
  US11/001,277
• Publication Number:
  US 20060117005A1
• Time in Patent Office: 1,462 Days
• Field of Search: 707/10, 707/106
• US Class Current: 1/1
• CPC Class Codes: G06F 16/335 Filtering based on additional data, e.g. user or group profiles filtering in web context G06F16/9535, G06F16/9536
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching
• CPC Class Codes: Y10S 707/99936 Pattern matching access
• CPC Class Codes: Y10S 707/99939 Privileged access
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface

Abstract

A method having at least one subscriber subscribing to topics from one or more data sources. The data sources available and the number of subscriptions for each data source are registered in a table in real time. Upon detecting either subscription activity by the subscribers or availability of data on a data source, a matching routine compares the subscriptions registered for the available data source and enables the sending of messages from the available data source to subscriber/s.

Claims

1. In a publish/subscribe system having one or more subscribers subscribing to data from one or more data sources, a method for just-in-time messaging comprising the steps of:

recording in real time in a subscription table, subscription requests from subscribers, said subscription requests including specific data sources to be subscribed to, said subscription table storing statistics of the subscriptions topics and the categorization and specifics of the data being requested including a system prefix, subtopic of the data type, specific news forum served, and specific forum to be listened to, a subscriber subscribing to a topic;

recording in real time in a data source table, data sources for providing data to subscribers;

comparing with a matching routine connected to said subscription table and said data source table, data source subscription requests in the subscription table with data sources of the data source table as said data sources become available and without further input from said subscribers, said matching routine matching subscription requests by said statistics for the subscriptions topics and categorization and specifics with currently available and active data sources;

in real time and responsive to said matching routine comparing step, one of enabling or disabling message transmissions from a subscribed to data source recorded in said data source table to a subscriber having a subscription for said subscribed to data source in said subscription table through a publish/subscribe engine; and

searching with said matching routine for matches, immediately after the updating of either of said user subscription table or said data source table.

2. The method according to claim 1 further comprising recording with a subscription monitor, subscriptions from said subscribers into said subscription table, said subscription including topics being subscribed to.

3. The method according to claim 1 further comprising recording with a data source registry, available data sources into said data source table.

4. The method according to claim 3 further comprising:

associating a data source process with each data source; and

said data source process notifying said data source registry, when the respective data source associated with a data source provider has data available.

5. The method according to claim 4 further comprising controlling with each of said data source processes, messages from the respective associated data source to subscribers responsive to said matching routine thereby sending messages from a subscribed to data source to a subscriber when said matching routine finds a match.

6. The method according to claim 1 further comprising updating said subscription table with a subscription monitor immediately upon a subscription being received from a subscriber.

7. The method according to claim 6 wherein said data source registry updates said data source table immediately upon a data source becoming available or unavailable for sending messages.

8. The method according to claim 1 wherein said data sources includes one of a forum, a web feed, a webpage, a public database or a server log.