System and method for forward chaining web-based procedure calls

• US 7,136,895 B2
• Filed: 07/24/2002
• Issued: 11/14/2006
• Est. Priority Date: 07/24/2002
• Status: Active Grant

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: St. Pierre, Robert P., Scott, Glenn C.
• Primary Examiner(s): Vaughn, Jr., William
• Assistant Examiner(s): BENGZON, GREG C
• Application Number:
  US10/205,108
• Publication Number:
  US 20040019678A1
• Time in Patent Office: 1,574 Days
• Field of Search: 709202-203, 709/225, 705 9- 10
• US Class Current: 709/202
• CPC Class Codes: G06F 9/547 Remote procedure calls [RPC]; Web services
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/561 Adding application-functional data or data for application control, e.g. adding metadata
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/566 Grouping or aggregating service requests, e.g. for unified processing
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A method of chaining together multiple dependent web-based procedure calls into a single request is disclosed. A request containing multiple MIME encoded service requests is transmitted to a first service. The request is parsed and the first service identified and performed. The results of the first service are appended to the remainder of the request which is forwarded to a second service listed in the request. The second service listed in the request may use the output of the first service as input and performs the second service. The process continues until the last service listed in the request is performed. Any output from the performance of the service requests is returned to the requesting device following execution of a MIME encoded callback request, the callback request being embedded in the original request following the last of the listed service requests.

Claims

1. In a network having at least two electronic devices and a plurality of services, said plurality of services provided by computer-executable code stored on at least one of said electronic devices, said at least two electronic devices including a requesting device and a receiving device, a method, comprising the steps of:

receiving over a connection at a first service on said receiving device a request from said requesting device, said request including at least two service requests and a callback request, said callback request including a return destination address on the requesting device, said at least two service requests including at least one service request for a service other than said first service;

performing the first service specified in said request;

appending a first result of said first service to said request; and

forwarding said first result and said request to a second service listed in said request, said second service performing one of said at least two service requests prior to the results of said at least two service requests being transmitted over a new connection to the requesting device, the new connection created by a last service in the at least two service requests.

2. The method of claim 1 wherein said second service uses the first result of said first service as input for said second service.

3. The method of claim 1, comprising the further steps of:

transmitting the result of said second service and said request to an additional service listed in said request; and

using the second result to perform said additional service specified in said request.

4. The method of claim 1 wherein each of said plurality of services are located on different electronic devices.

5. The method of claim 1 wherein at least two of said plurality of services are located on the same device.

6. The method of claim 1 wherein said request is an HTTP request.

7. The method of claim 6 wherein said service requests are encoded using MIME encoding.

8. The method of claim 1, comprising the further steps of:

transmitting the first and second results via a broker device, said broker device being a device authorized by said firewall to accept messages from addresses outside said firewall and send messages to addresses inside said firewall.

9. The method of claim 1, comprising the further steps of:

receiving said request using a first protocol; and

transmitting said first and second result over said new connection using a protocol different from said first protocol.

10. In a network having at least two electronic devices and a plurality of services, said plurality of services provided by computer-executable code stored on at least one of said electronic devices, said at least two electronic devices including a requesting device and a receiving device, a medium holding computer-executable steps for a method, said method comprising the steps of:

providing a plurality of services, said services provided by computer-executable code stored on at least one of said electronic devices;

receiving over a connection at said first service on said receiving device a request from said requesting device, said request including at least two service requests and a callback request, said callback request including a return destination address on the requesting device, said at least two service requests including at least one service request for a service other than said first service;

performing the first service specified in said request;

forwarding the results of said first service and said request to a second service requested in said request;

performing the second service specified in said request, said second service using the results of said first service as input for said second service;

transmitting a message over a new connection from said at least one electronic device holding one of said plurality of services to the requesting device, said one of said plurality of services being the last service that performed an operation listed in said request, said message including the results of said last service listed in said request.

11. The medium of claim 10 wherein said method comprises the further steps of:

transmitting the result of said second service and said request to an additional service listed in said request; and

using the second result to perform said additional request.

12. The medium of claim 10 wherein said request is an HTTP request.

13. The medium of claims 10 wherein said at least two service requests are encoded using MIME encoding.

14. The medium of claim 10 wherein said method comprises the further steps of:

transmitting said message via a broker device, said broker device being a device located inside a firewall which is authorized by said firewall to accept messages from designated addresses outside said firewall and send messages to designated addresses inside said firewall.

15. In a network having at least two electronic devices and a plurality of services, said plurality of services provided by computer-executable code stored on at least one of said electronic devices, said at least two electronic devices including a requesting device and a receiving device, a method, comprising the steps of:

receiving over a connection at said first service on said receiving device a request from said requesting device, said request including at least two service requests and a callback request, said callback request including a retum destination address on the requesting device, said at least two service requests including at least one service request for a service other than said first service;

performing the first service specified in said request;

forwarding a result of said first service and said request to a second service requested in said request;

performing said second service specified in said request, said second service using the results of said first service as input for said second service;

transmitting a message over a new connection from said at least one electronic device holding a last service that performed an operation listed in the request, said message including the results of said last service listed in said request.

16. The method of claim 15, comprising the further steps of:

transmitting a result of said second service and said request to an additional service listed in said request; and

using the second result to perform said additional request.

17. In a network having at least two electronic devices and a plurality of services, said plurality of services provided by computer-executable code stored on at least one of said electronic devices, said at least two electronic devices including a requesting device and a receiving device, a method, comprising the steps of:

receiving over a connection at said first service on said receiving device a request from said requesting device, said request including at least two service requests and a callback request, said callback request including a return destination address on the requesting device, said at least two service requests including at least one service request for a service other than said first service;

performing the first service specified in said request and

forwarding said request and a first result of said first service to a second service listed in said request, said second service performing one of said service requests prior to an acknowledgement being transmitted over a new connection to the requesting device.

18. The method of claim 17, comprising the further steps of:

transmitting said request to an additional service listed in said request; and

performing a requested service with said additional service.

19. The method of claim 18 wherein said additional service uses at least one of the first result from the first service and a second result from a second service to perform said requested service and generate an additional result.

20. The method of claim 19, comprising the further steps of:

transmitting said additional result to said requesting device with said acknowledgement.