Document management system integrating an environment for executing an agent and having means for changing an agent into an object

• US 5,887,171 A
• Filed: 01/28/1997
• Issued: 03/23/1999
• Est. Priority Date: 01/29/1996
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Tada, Katsumi, Azuma, Akio, Matsuda, Yoshiki, Hashimoto, Tetsuya, Hashimoto, Kazuhiro, Yamasaki, Noriyuki, Kameda, Shigeru
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): HOMERE, JEAN RAYMOND
• Application Number:
  US08/789,562
• Time in Patent Office: 784 Days
• Field of Search: 395/683, 395/200.36, 707/103, 707/4, 707/10, 707/500
• US Class Current: 719/317
• CPC Class Codes: G06F 16/289 Object oriented databases
• CPC Class Codes: G06F 9/465 Distributed object oriented systems remote method invocation [RMI] G06F9/548
• CPC Class Codes: G06F 9/4862 the task being a mobile agent, i.e. specifically designed to migrate
• CPC Class Codes: Y10S 707/99934 Query formulation, input preparation, or translation

Abstract

A document management system a high extendability, flexibility, and stability capable of solving a problem that, as an agent-oriented paradigm system extends, the number of agents increases and indefinite factors increase. In the system configuration with an object execution environment implemented with an object-oriented function and an agent execution environment implemented with an agent-oriented function, a unit for changing an agent into an object is provided for using the agent execution environment as the object execution environment. With this configuration, a system developer can use the merits of both the object- and agent-oriented paradigms by implementing a function necessary for stable operation by an object and a function with high change occurrence frequency by an agent.

Claims

1. A document management system comprising:

a first module implemented with an agent-oriented function;

a second module implemented with an object-oriented function; and

means for changing an agent into an object and executing said first module as said second module, including;

communication route determination means provided with a communication route table which stores correspondence between processing request messages issued by agents and transmission communication routes, said communication determination means determining a transmission communication route for a processing request message issued by an agent, by searching the communication route table;

object communication means for receiving a message from another object and transmitting the message to another object via a communication route determined by said communication route determination means;

agent communication means for receiving a message from another agent and transmitting the message to another agent via a communication route determined by said communication determination means; and

agent control means for receiving a processing request message to the agent via said object communication means or said agent communication means, activating the agent, and controlling the processing of the agent, and for determining a communication route by said communication route determination means and controlling the processing of issuing a message from the agent via said object communication means or said agent communication means.

2. A document management system according to claim 1, wherein said means for changing an agent into an object comprises:

internal information acquisition means for acquiring internal information of an agent moving to another environment and generating a message containing the internal information; and

internal information setting means for, when the message generated by said internal information acquisition means is received from another object, setting the internal information of the agent contained in the message to the agent.

3. A document management system according to claim 2, wherein said means for changing an agent into an object comprises:

function notification means for notifying the function of the subject agent to the outside; and

representative communication means for receiving a processing request from another agent as a representative of the subject agent, transferring the received processing request to the subject agent, and sending back a processing result of the subject agent to the requesting agent.

4. A document management system according to claim 3, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

5. A document management system according to claim 2, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

6. A document management system according to claim 1, wherein said means for changing an agent into an object comprises:

function notification means for notifying the function of the subject agent to the outside; and

representative communication means for receiving a processing request from another agent as a representative of the subject agent, transferring the received processing request to the subject agent, and sending back a processing result o the subject agent to the requesting agent.

7. A document management system according to claim 6, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

15. A document management system according to claim 1, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

8. A document management system comprising:

a first module implemented with an agent-oriented function;

a second module implemented with an object-oriented function; and

means for changing an agent into an object and executing said first module as said second module;

wherein said second module includes a management/control object for collectively managing and controlling objects in unit of function; and

wherein said means for changing an agent into an object comprises;

communication route determination means provided with a communication route table which stores correspondence between processing request messages issued by agents and transmission communication routes, said communication determination means determining a transmission communication route for a processing request message issued by an agent, by searching the communication route table;

object communication means for receiving a message from another object and transmitting the message to another object via a communication route determined by said communication route determination means;

agent communication means for receiving a message from another agent and transmitting the message to another agent via a communication route determined by said communication determination means; and

agent control means for receiving a processing request message to the agent via said object communication means or said agent communication means, activating the agent, and controlling the processing of the agent, and for determining a communication route by said communication route determination means and controlling the processing of issuing a message from the agent via said object communication means or said agent communication means.

9. A document management system according to claim 8, wherein said means for changing an agent into an object comprises:

internal information acquisition means for acquiring internal information of an agent moving to another environment and generating a message containing the internal information; and

internal information setting means for, when the message generated by said internal information acquisition means is received from another object, setting the internal information of the agent contained in the message to the agent.

10. A document management system according to claim 9, wherein said means for changing an agent into an object comprises:

function notification means for notifying the function of the subject agent to the outside; and

representative communication means for receiving a processing request from another agent as a representative of the subject agent, transferring the received processing request to the subject agent, and sending back a processing result of the subject agent to the requesting agent.

11. A document management system according to claim 10, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

12. A document management system according to claim 9, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

13. A document management system according to claim 8, wherein said means for changing an agent into an object comprises:

function notification means for notifying the function of the subject agent to the outside; and

representative communication means for receiving a processing request from another agent as a representative of the subject agent, transferring the received processing request to the subject agent, and sending back a processing result of the subject agent to the requesting agent.

14. A document management system according to claim 13, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

16. A document management system according to claim 8, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

17. A document management system comprising:

a first module implemented with an agent-oriented function;

a second module implemented with an object-oriented function; and

means for changing an agent into an object and executing said first module as said second module, including communication route determination means provided with a communication route table which stores correspondence between processing request messages issued by agents and transmission communication routes, said communication determination means determining a transmission communication route for a processing request message issued by an agent, by searching the communication route table.

18. A document management system according to claim 17, wherein said second module includes a management/control object for collectively managing and controlling objects in unit of function.

19. A document management system according to claim 18, wherein said means for changing an agent into an object comprises:

object communication means for receiving a message from another object and transmitting the message to another object via a communication route determined by said communication route determination means;

agent communication means for receiving a message from another agent and transmitting the message to another agent via a communication route determined by said communication determination means; and

agent control means for receiving a processing request message to the agent via said object communication means or said agent communication means, activating the agent, and controlling the processing of the agent, and for determining a communication route by said communication route determination means and controlling the processing of issuing a message from the agent via said object communication means or said agent communication means.

20. A document management system according to claim 19, wherein said means for changing an agent into an object comprises:

internal information acquisition means for acquiring internal information of an agent moving to another environment and generating a message containing the internal information; and

internal information setting means for, when the message generated by said internal information acquisition means is received from another object, setting the internal information of the agent contained in the message to the agent.

21. A document management system according to claim 20, wherein said means for changing an agent into an object comprises:

function notification means for notifying the function of the subject agent to the outside; and

representative communication means for receiving a processing request from another agent as a representative of the subject agent, transferring the received processing request to the subject agent, and sending back a processing result of the subject agent to the requesting agent.

22. A document management system according to claim 21, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

23. A document management system according to claim 20, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

24. A document management system according to claim 19, wherein said means for changing an agent into an object comprises:

function notification means for notifying the function of the subject agent to the outside; and

representative communication means for receiving a processing request from another agent as a representative of the subject agent, transferring the received processing request to the subject agent, and sending back a processing result of the subject agent to the requesting agent.

25. A document management system according to claim 24, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

26. A document management system according to claim 19, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

27. A document management system according to claim 18, wherein said means for changing an agent into an object comprises:

communication route determination means provided with a communication route table which stores correspondence between processing request messages issued by agents and transmission communication routes, said communication determination means determining a transmission communication route for a processing request message issued by an agent, by searching the communication route table;

object communication means for receiving a message from another object and transmitting the message to another object via a communication route determined by said communication route determination means;

agent communication means for receiving a message from another agent and transmitting the message to another agent via a communication route determined by said communication determination means; and

agent control means for receiving a processing request message to the agent via said object communication means or said agent communication means, activating the agent, and controlling the processing of the agent, and fore determining a communication route by said communication route determination means and controlling the processing of issuing a message from the agent via said object communication means or said agent communication means.

28. A document management system according to claim 27, wherein said means for changing an agent into an object comprises:

internal information acquisition means for acquiring internal information of an agent moving to another environment and generating a message containing the internal information; and

internal information setting means for, when the message generated by said internal information acquisition means is received from another object, setting the internal information of the agent contained in the message to the agent.

29. A document management system according to claim 28, wherein said means for changing an agent into an object comprises:

function notification means for notifying the function of the subject agent to the outside; and

representative communication means for receiving a processing request from another agent as a representative of the subject agent, transferring the received processing request to the subject agent, and sending back a processing result of the subject agent to the requesting agent.

30. A document management system according to claim 29, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

31. A document management system according to claim 28, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

32. A document management system according to claim 27, wherein said means for changing an agent into an object comprises:

function notification means for notifying the function of the subject agent to the outside; and

representative communication means for receiving a processing request from another agent as a representative of the subject agent, transferring the received processing request to the subject agent, and sending back a processing result of the subject agent to the requesting agent.

33. A document management system according to claim 32, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

34. A document management system according to claim 27, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

35. A document management system according to claim 18, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.

36. A document management system according to claim 17, wherein said second module has a three-layer structure comprising:

a presentation layer object for providing a user interface function when a document is retrieved and inspected;

a function layer object for providing a document retrieval and inspection function; and

a data layer object including a database management object (DBMS object) for accumulating and managing document information and providing a management/control function of the DBMS object.