System and method for providing post HOC access to legacy applications and data
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-007/00
출원번호
US-0753855
(2001-01-03)
발명자
/ 주소
Chu Carroll,Mark C.
Karasick,Michael
Weber,Samuel M.
출원인 / 주소
International Business Machines Corporation
인용정보
피인용 횟수 :
28인용 특허 :
6
초록▼
A method and architecture having components for performing a method comprising the steps of: forming a simple bi-directional communication link between each of the clients and a server; and, transmitting along the communication link at least one of two kinds of messages comprising a first message wh
A method and architecture having components for performing a method comprising the steps of: forming a simple bi-directional communication link between each of the clients and a server; and, transmitting along the communication link at least one of two kinds of messages comprising a first message which is a synchronous query/response, and a second message which is an asynchronous subscription based event notification, to allow arbitrary data structures to be rendered into a standard communication format.
대표청구항▼
Having thus described our invention, what we claim as new and desire to secure by Letters Patent is as follows: 1. An architecture neutral system for building clients that access a legacy system, the neutral system comprising: at least one client location; at least one server location; a bi-directi
Having thus described our invention, what we claim as new and desire to secure by Letters Patent is as follows: 1. An architecture neutral system for building clients that access a legacy system, the neutral system comprising: at least one client location; at least one server location; a bi-directional communication link connecting each of the at least one client and server for transmitting two kinds of messages, first message being a synchronous action between query and response, and a second message being an asynchronous subscription based event notification, whereby arbitrary data structures are rendered into a standard communication format by applying contents of an asynchronous subscription based event notification for providing synchronous action between query and response communications. 2. The system as recited in claim 1, wherein the synchronous action between query and response is used to submit queries from the client to the server. 3. The system as recited in claim 1, wherein a client request includes an ID and a property. 4. The system as recited in claim 3, wherein the communication link locates an object associated with the ID, and invokes an extension registered to handle queries for the property. 5. The system as recited in claim 1, wherein the extension returns a structured text document to be transmitted to the client as a response. 6. The system as recited in claim 5, wherein the structured text document is in XML format. 7. A method for building clients that access a legacy system, the method comprising: forming simple bi-directional communication link between each of the clients and a server; and transmitting along said communication link two kinds of messages, a first message being a synchronous action between query and response, and a second message being an asynchronous subscription based event notification, to allow arbitrary data structures to be rendered into a standard communication format. 8. The method as recited in claim 7, further comprising employing synchronous event notification based on a subscription based communication model. 9. The method as recited in claim 8, further comprising the client initiating an event. 10. The method as recited in claim 8, further comprising the server initiating an event. 11. The method as recited in claim 9, wherein an event includes an event type and event-specific information describing the event. 12. The method as recited in claim 7, further comprising components on the server registering listeners to receive notifications of particular event types. 13. The method as recited in claim 7, further comprising components on the client registering listeners to receive notifications of particular event types. 14. The method as recited in claim 7, further comprising providing an application that accesses legacy systems and data. 15. The method as recited in claim 7, further comprising adding low-tech "extensions" to provide services. 16. The method as recited in claim 7, further comprising providing access both to legacy data and to legacy code. 17. A method as recited in claim 7, wherein the step of forming includes building a heterogeneous linked structure.
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