Dynamic java class loading for application execution

• US 7,028,295 B2
• Filed: 10/31/2001
• Issued: 04/11/2006
• Est. Priority Date: 10/31/2001
• Status: Expired due to Fees

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Nelson, Steve, Chan, Brian, Li, Chia-Hsin
• Primary Examiner(s): NGUYEN BA, HOANG VU A
• Application Number:
  US09/999,658
• Publication Number:
  US 20030097400A1
• Time in Patent Office: 1,623 Days
• Field of Search: 717162-178, 717/148, 717/114, 717/116, 717/118, 717120-122, 715/700, 715/749, 715/762, 715/763, 715/789, 715/811, 715/961, 715965-969, 709200-203, 709220-224, 719/310, 719313-315
• US Class Current: 717/178
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

Methods and an apparatus for downloading an application over a distributed network are provided. One exemplary method includes a computer implemented method executed by a general purpose computer, where the computer implemented method is capable of downloading an executable program from a networked storage to the general purpose computer. The method initiates with downloading a core module where the core module includes classes necessary to run an engine of the executable program. Then, the core module is installed which in turn module provides instant user functionality. The installed core module includes code for, requesting a class not associated with the core module, searching non-core modules of the executable program for the requested class, and downloading to the general purpose computer a non-core module containing the requested class while the executable program provides the user functionality.

Claims

1. A method of distributing a software application over a network having a network server and a client device, comprising:

partitioning said software application into a plurality of software modules each module encapsulating a partial functionality of said software application, wherein;

A) the full functionality of said software application is defined by a cumulative contribution of all of said software modules;

B) at least one of said software modules is a core module providing a software engine of said software application; and

C) said network server manages access to said software modules;

having said client device request said software application from said network server;

having said network server respond to said request for said software application by transferring only the core module to said client device for execution, wherein during the execution of said core module by said client device, upon said execution necessitating a functionality not provided by said core module and not available within said client device, having said core module;

i) identify a target module within said plurality of software modules that provides said necessitated functionality;

ii) automatically acquiring and installing said targeted module via said network; and

iii) executing said necessitated functionality from said target module.

2. The method of claim 1, wherein when said core module is executed, said core module determines which of said plurality of modules are absent from said client device, and initiates downloading of said missing modules while executing its engine function on said client device.

3. The method of claim 2, wherein said downloading of missing modules is a background download function as defined by said client device not providing a readily displayed indication of the downloading function.

4. The method of claim 2, wherein if said core module is downloading an absent module when said execution of said core module necessitates a functionality not provided by said core module and not available within said client device, and said core module finishes the downloading of said absent module if said absent module is said target module, or halts the downloading of said absent module prior to automatically acquiring and installing said targeted module if said absent module is not said target module.

5. The method of claim 1, wherein said core module:

monitors past user-selections of software functions to predict probable future user-selections of software functions; and

determines if a future functionality required by said probable future user-selections of software functions is provided by said core module or is available within said client device, and if it is not, then said core module;

identifies a specific module within said plurality of software modules that provides said future functionality; and

automatically acquires and installs said specific module via said network.

6. The method of claim 1, wherein said core module provides a graphics user interface function for listing a selection of functions available by said software application, including functions not available within said core module.

7. The method of claim 6, wherein said core module provides said graphics users interface (GUI) by acquiring over said network and installing one of said plurality of modules that executes a GUI function.

8. The method of claim 1, wherein said network is the internet.

9. A system for distributing a software application over a network, comprising:

a network server having a access to a data store having a plurality of software modules each module encapsulating a partial functionality of said software application, wherein;

A) the full functionality of said software application is defined by a cumulative contribution of all of said software modules;

B) at least one of said software modules is a core module providing a software engine of said software application; and

C) said network server manages access to said software modules; and

a client device effective for requesting said software application from said network server;

wherein said network server responds to a request from said client device for said software application by transferring only the core module to said client device for execution, wherein during the execution of said core module by said client device, upon said execution necessitating a functionality not provided by said core module and not available within said client device, said client device;

i) identifies a target module within said plurality of software modules that provides said necessitated functionality;

ii) automatically acquires and installs said targeted module via said network onto said client device; and

iii) executes said necessitated functionality from said target module.

10. The system of claim 9, wherein when said core module is executed, said client device determines which of said plurality of modules are absent from said client device, and initiates downloading of said missing modules while executing its engine function on said client device.

11. The system of claim 10, wherein said downloading of missing modules is a background download function as defined by said client device not providing a readily displayed indication of the downloading function.

12. The system of claim 10, wherein if said client device is downloading an absent module when said execution of said core module necessitates a functionality not provided by said core module and not available within said client device, and said client device finishes the downloading of said absent module if said absent module is said target module, or halts the downloading of said absent module prior to automatically acquiring and installing said targeted module if said absent module is not said target module.

13. The system of claim 9, wherein said client device:

monitors past user-selections of software functions to predict probable future user-selections of software functions; and

determines if a future functionality required by said probable future user-selections of software functions is provided by said core module or is available within said client device, and if it is not, then said client device;

identifies a specific module within said plurality of software modules that provides said future functionality; and

automatically acquires and installs said specific module via said network.

14. The system of claim 9, wherein said core module provides a graphics user interface function for listing a selection of functions available by said software application, including functions not available within said core module.

15. The system of claim 14, wherein said core module provides said graphics users interface (GUI) by acquiring over said network and installing one of said plurality of modules that executes a GUI function.

16. The system of claim 9 wherein said network is the internet.