Fastpath redeployment of EJBs

• US 6,557,100 B1
• Filed: 10/21/1999
• Issued: 04/29/2003
• Est. Priority Date: 10/21/1999
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Knutson, James Irwin
• Primary Examiner(s): Lee, Thomas
• Assistant Examiner(s): BARQADLE, YASIN M
• Application Number:
  US09/422,369
• Time in Patent Office: 1,286 Days
• Field of Search: 713/1, 707/1, 707/200, 707/103.R, 707/103.Y, 707/103, 707/203, 707/201, 717/118
• US Class Current: 713/100
• CPC Class Codes: G06F 8/60 Software deployment
• CPC Class Codes: G06F 9/465 Distributed object oriented systems remote method invocation [RMI] G06F9/548
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

A system, method, and software program for a fastpath redeployment of an Enterprise Java Bean (EJB). When an EJB is deployed, a copy of it is cached on the server. Thereafter, if the EJB is redeployed, it is compared to the cached copy to determine if the deployment descriptors or remote interfaces have changed. If there has been no change, then the previously deployed EJB is installed on the server, without the need to regenerate and recompile the EJB code.

Claims

1. A method for deploying a server-side object on a distributed computer system, comprising the steps of:

comparing the server-side object to a previously deployed object;

if a set of deployment attributes of the previously deployed object is the same as a set of deployment attributes of the server-side object, then

deploying the server-side object using compiled code associated with the previously deployed object; and

if the set of deployment attributes of the previously deployed object is not the same as the set of deployment attributes of the server-side object, then

generating deployment code according to the set of deployment attributes of the server-side object,

compiling the deployment code to produce a compiled deployment code, and

deploying the server-side object using the compiled deployment code.

2. The method of claim 1, wherein the set of deployment attributes includes deployment descriptors.

3. The method of claim 1, wherein the set of deployment attributes includes remote interfaces.

4. The method of claim 1, wherein the server-side object is an Enterprise Java Bean.

5. The method of claim 1, wherein the previously deployed object is an Enterprise Java Bean.

6. The method of claim 1, wherein the server-side object is deployed on a network server.

7. The method of claim 1, wherein the server-side object is stored in an Enterprise Java Bean Java Archive file (EJB JAR file), said EJB JAR file including a home interface, a remote interface and a bean class.

8. A computer program product for deploying a server-side object on a distributed computer system, comprising, on a computer-useable medium:

instructions for comparing the server-side object to a previously deployed object;

instructions for deploying the server-side object using compiled code associated with the previously deployed object if a set of deployment attributes of the previously deployed object is the same as a set of deployment attributes of the server-side object; and

instructions for generating deployment code according to the set of deployment attributes of the server-side object, compiling the deployment code to produce a compiled deployment code, and deploying the server-side object using the compiled deployment code, if the set of deployment attributes of the previously deployed object is not the same as the set of deployment attributes of the server-side object.

9. The computer program product of claim 8, wherein the set of deployment attributes includes deployment descriptors.

10. The computer program product of claim 8, wherein the set of deployment attributes includes remote interfaces.

11. The computer program product of claim 8, wherein the server-side object is an Enterprise Java Bean.

12. The computer program product of claim 8, wherein the previously deployed object is an Enterprise Java Bean.

13. The computer program product of claim 8, wherein the server-side object is deployed on a network server.

14. The computer program product of claim 8, wherein the server-side object is stored in an Enterprise Java Bean Java Archive file (EJB JAR file), said EJB JAR file including a home interface, a remote interface and a bean class.

15. An apparatus for deploying a server-side object comprising:

a network;

a data processing system connected to said network;

a server for receiving said server-side object, connected to said data processing system;

an archive file containing said server-side object, wherein said archive file includes a set of deployment attributes;

a stored archive file containing a deployed server object, wherein said stored archive file includes a set of stored deployment attributes;

wherein the server-side object is compared to the deployed server-side object, and

if the set of stored deployment attributes is the same as the set of deployment attributes, then the server-side object is deployed using compiled code associated with the deployed server object; and

if the set of stored deployment attributes is not the same as the set of deployment attributes, then the server-side object is deployed using code generated and compiled according to the set of deployment attributes.

16. The apparatus of claim 15, wherein the set of deployment attributes includes deployment descriptors.

17. The apparatus of claim 15, wherein the set of deployment attributes includes remote interfaces.

18. The apparatus of claim 15, wherein the server-side object is an Enterprise Java Bean.

19. The apparatus of claim 15, where in the previously deployed server-side object is an Enterprise Java Bean.

20. The apparatus of claim 15, wherein the server-side object is deployed on a network server.

21. The apparatus of claim 15, wherein the server-side object is stored in an Enterprise Java Bean Java Archive file (EJB JAR file), said EJB JAR file including a home interface, a remote interface and a bean class.