Method and apparatus for providing data from a data source to a data consumer, and for rendering data from a data provider to an interface

• US 7,676,482 B2
• Filed: 05/09/2005
• Issued: 03/09/2010
• Est. Priority Date: 08/28/2000
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Sprague, Roger W., Travison, Daniel T.
• Primary Examiner(s): Vital; Pierre M
• Assistant Examiner(s): Rahman; Sabana
• Application Number:
  US11/124,860
• Publication Number:
  US 20050210057A1
• Time in Patent Office: 1,765 Days
• Field of Search: 707/100, 707101-1041
• US Class Current: 1/1
• CPC Class Codes: G06F 16/957 Browsing optimisation, e.g. caching or content distillation
• CPC Class Codes: Y10S 707/99942 Manipulating data structure, e.g. compression, compaction, compilation

Abstract

An apparatus and methodology are provided for obtaining data from a data source and providing the data to a data consumer, as well as for providing data from a data provider to an interface. The method provides for sending an origin request message to a data provider, receiving an origin response message having a presentation schema and data, and rendering the data to an interface by providing a presentation language representation of the data according to the presentation schema.

Claims

1. A method of obtaining data from a data set of a data source and rendering the data to an interface, comprising:

sending a first request message to a data provider, the first request message including a length parameter indicating an amount of data the data provider is to send, wherein the length parameter limits the amount of data that is to be sent in reply to the first request message, regardless of the actual size of the data source'"'"'s data set;

receiving a first response message from the data provider in response to the first request message, the first response message comprising the amount of data indicated by the length parameter such that a user does not have to wait for the entire data set to be downloaded, the first response message further having a schema component and a data component, wherein the data component includes at least one data record having at least one data element requested by the first request message and the schema component includes a name component, a display component, and a type component containing presentation information for rendering the at least one data element in the at least one data record, the type component instructing the interface whether the at least one data element is to be displayed as an image or displayed as HTML, wherein because the user obtains the schema with each data request, the interface can dynamically render a continually changing data set;

buffering the data elements of the data set without buffering the presentation information, such that redundant presentation information is not stored while the data elements are stored; and

dynamically rendering data from the data component to the interface according to the schema component.

2. The method of claim 1, wherein the act of rendering data from the data component to the interface according to the schema component comprises providing a presentation language representation of the at least one data element of the at least one data record to the interface according to the schema component associated therewith.

3. The method of claim 2, wherein the presentation language representation is at least one of HTML, DHTML, postscript, java script, visual basic script, java, or visual C++.

4. The method of claim 2, wherein the display component has a binary display value and the type component has a binary type value.

5. The method of claim 4, wherein the act of providing the presentation language representation comprises:

displaying the at least one data element of the at least one data record via the interface when the display value is one;

hiding the at least one data element of the at least one data record when the display value is zero;

displaying the at least one data element of the at least one data record as an image via the interface when the display value is one and the type value is one; and

displaying the at least one data element of the at least one data record as HTML via the interface when the display value is one and the type value is zero.

6. The method of claim 1, wherein the first request message includes an origin record identifier and a record count identifier.

7. The method of claim 6, the act of rendering further comprises providing a presentation language representation of the at least one data record having at least one data element to the interface including a binary display value and a binary type value and rendering the data based upon the binary display value and the binary type value, wherein the binary display value indicates whether the at least one data element is to be hidden, and the binary type value indicates whether the at least one data element is to be displayed as an image or alternately as an HTML element.

8. The method of claim 7, wherein the record count identifier comprises an integer representing a number of records desired from the data source;

wherein the data component comprises an integer number of data records having at least one data clement, the integer number being equal to the record count identifier; and

wherein rendering data from the data component to the interface according to the schema component comprises providing a presentation language representation of the at least one data element of the integer number of data records to the interface according to the name component, display component and type component associated therewith.

9. The method of claim 1, further comprising:

sending a subsequent request message to the data provider, the subsequent request message having a record identifier and a record count identifier;

receiving a subsequent response message from the data provider, the subsequent response message having a data component and not having a schema component; and

rendering data from the data component of the subsequent response message to the interface according to the schema component of the first response message.

10. A computer readable storage medium having stored thereon computer executable instructions for carrying out the method of claim 1.

11. A system embodied on a computer-readable storage medium for obtaining data from a data set of a data source and presenting the data to an interface comprising:

a data consumer in communication with the interface and adapted to send a first request message to a data provider, the first request message having an origin record identifier and a record count identifier, the first request message further including a length parameter indicating an amount of data the data provider is to send, wherein the length parameter limits the amount of data that is to be sent in reply to the first request message, regardless of the actual size of the data source'"'"'s data set;

wherein the data provider sends a first response message to the data consumer, the first response message comprising the amount of data indicated by the length parameter such that a user does not have to wait for the entire data set to be downloaded, the first response message further having a schema component and a data component including data from the data source requested by the first request message, the schema component providing presentation information used by the data consumer to create an appropriate display language representation of the data, wherein because the user obtains the schema with each data request, the interface can dynamically render a continually changing data set;

wherein the data consumer buffers the data elements of the data set without buffering the presentation information, such that redundant presentation information is not stored while the data elements are stored; and

wherein the data consumer dynamically renders the data to the interface according to the schema component.

12. The system of claim 11, wherein the data consumer is provides a presentation language representation of the data to the interface according to the schema component.

13. The system of claim 12, wherein the presentation language representation is at least one of HTML, DHTML, postscript, java script, visual basic script, java, or visual C++.

14. The system of claim 11,

wherein the data consumer sends a subsequent request message having a record identifier and a record count identifier;

wherein the data provider sends a subsequent response message to the data consumer having a subsequent data component including data from the data source and not having a schema component;

wherein the data consumer renders data from the subsequent data component of the subsequent response message to the interface according to the schema component of the first response message; and

wherein the data provider sends an unsolicited response message to the data consumer having an updated schema component upon detection of a change to the data source format.

15. The system of claim 14, wherein the data consumer provides a presentation language representation of the data from the subsequent data component according to the schema component.

16. The system of claim 15, wherein the presentation language representation of the data from the subsequent data component is one of HTML, DHTML, postscript, java script, visual basic script, java, and visual C++.

17. A computer readable medium having stored thereon computer executable instructions for carrying out a system including a data provider for providing data from a data set of a data source to an interface of a data consumer, the system comprising:

means for receiving a first request message from the data consumer, the first request message having an origin record identifier and a record count identifier, the first request message further including a length parameter indicating an amount of data the data provider is to send, wherein the length parameter limits the amount of data that is to be sent in reply to the first request message, regardless of the actual size of the data source'"'"'s data set;

means for constructing a first response message comprising the amount of data indicated by the length parameter such that a user does not have to wait for the entire data set to be downloaded, the first response message further having a schema component and a first data component according to the origin record identifier and the record count identifier, wherein the first data component includes data from the data source requested by the first request message, wherein the first data component includes at least one data record having at least one data element and the schema component includes a name component, a title component, a width component, an alignment component, a display component, and a type component containing presentation information for rendering the at least one data clement in the at least one data record, wherein because the user obtains the schema with each data request, the interface can dynamically render a continually changing data set;

means for sending the first response message to the data consumer;

means for buffering the data elements of the data set without buffering the presentation information, such that redundant presentation information is not stored while the data elements are stored;

means for dynamically rendering data from the first data component on an interface according to the schema component;

means for receiving a subsequent request message from the data consumer;

means for constructing a first subsequent response message upon receiving the subsequent request message, the subsequent response message having a second data component and not having a schema component;

means for sending the first subsequent response message to the data consumer;

means for rendering data from the second data component to an interface according to the schema component from the first response message;

means for constructing a second subsequent response message having an updated schema component upon detection of a change to the data source format, the updated schema component reflecting the updated data source format; and

means for sending the second subsequent response message to the data consumer without solicitation by a request message.

18. The computer readable medium of claim 17, further comprising:

means for rendering data from the data component to an interface according to the most recently received schema component comprising means for providing a presentation language representation of the at least one data record having at least one data element to the interface employing a binary display value and a binary type value included in the schema component and means for rendering the data based upon the binary display value and the binary type value.