DATA LISTENERS FOR TYPE DEPENDENCY PROCESSING

• US 20090037577A1
• Filed: 08/01/2008
• Published: 02/05/2009
• Est. Priority Date: 08/03/2007
• Status: Active Grant

• Current Assignee: SAP SE
• Original Assignee: SAP SE
• Inventors: Theobald, Dietmar
• Granted Patent: US 9,092,408 B2
• Time in Patent Office: Days
• US Class Current: 709/224
• CPC Class Codes: G06F 16/113 Details of archiving lifecycle management in storage systems G06F3/0649; backup systems G06F11/1446
• CPC Class Codes: G06F 40/169 Annotation, e.g. comment data or footnotes
• CPC Class Codes: G06F 8/73 Program documentation
• CPC Class Codes: G06K 15/00 Arrangements for producing a permanent visual presentation of the output data , e.g. computer output printersprinting or plotting combined with another operation, e.g. with conveying, G06K17/00

Abstract

A method and apparatus for data listeners for type dependency processing. An embodiment of a method for dependency processing of computer files includes receiving a data stream input at a scanner component, where the data stream input represents program elements of one or more computer files. A data stream of type definitions and type usages is generated, and the data type definitions and data type usages are provided as an input to a listening component. The listening component performs a listening function of filtering the type definition and type usage data, aggregating the type usage data, or echoing the data stream output, and an output is generated from the listening component.

Claims

1. A method for dependency processing of computer files comprising:

receiving a data stream input at a scanner component, the data stream input representing a plurality of program elements of one or more computer files;

generating a data stream comprising a plurality of type definitions and type usages;

providing the data type definitions and data type usages as input to a listening component, wherein the listening component performs one of the listening functions comprising;

filtering the type definition and type usage data,

aggregating type usage data;

or

echoing the data stream output; and

generating an output from the listening component.

2. The method of claim 1, wherein the output from the listening component is a data stream having the same format as the input to the listening component.

3. The method of claim 2, where the listening function of the listening component is either filtering the type definition and type usage data or aggregating the type usage data.

4. The method of claim 2, further comprising providing the output from the listening component as input to a second listening component.

5. The method of claim 1, wherein the output of the listening component is an echo of the input data to the listening component.

6. The method of claim 1, wherein the one or more computer files comprise Java class files.

7. A type dependency processing system comprising:

a data scanning module, the data scanning module to receive a data stream input containing a plurality of program elements and to scan the data stream input to identify data type definitions and usages of the data types; and

a data listening module, the data listening module to receive the identified data type definitions and data type usages, the data listening module being one of the following;

a configurable filter to filter out certain data type definitions and data type usages;

an aggregator to aggregate data type usages;

or

an echo mechanism to echo the data type definitions and data type usages.

8. The system of claim 7, further comprising a second data listening module, wherein an output of the listening module is an input to the second listening module.

9. The system of claim 8, wherein a format of the output of the listening module is the same as the format of the input to the listening module.

10. The system of claim 7, wherein the configurable filter comprises one or more configurable parameters for a filter condition.

11. The system of claim 7, wherein the aggregator comprises a concentrator element to aggregate type usages and a temporary storage to hold type usages during processing.

12. The system of claim 7, wherein the echo mechanism produces a text stream for a user.

13. The system of claim 7, wherein the echo mechanism produces text for external processing.

14. An article of manufacture comprising:

a computer-readable medium including instructions that, when accessed by a processor, cause the computer to perform operations comprising;

receiving a data stream input at a scanner component, the data stream input representing a plurality of program elements of one or more computer files;

generating a data stream comprising a plurality of type definitions and type usages;

providing the data type definitions and data type usages as an input to a listening component, wherein the listening component performs one of the following listening functions;

filtering the type definition and type usage data,

aggregating type usage data, or

echoing the data stream output; and

generating an output from the listening component.

15. The article of manufacture of claim 14, wherein the output from the listening component is a data stream having the same format as the input to the listening component.

16. The article of manufacture of claim 15, where the listening function of the listening component is either filtering the type definition and type usage data or aggregating the type usage data.

17. The article of manufacture of claim 15, wherein the medium further includes instructions that, when accessed by a processor, cause the computer to perform operations comprising:

providing the output from the listening component as input to a second listening component.

18. The article of manufacture of claim 14, wherein the output of the listening component is an echo of the input data to the listening component.

19. The article of manufacture of claim 14, wherein the one or more computer files comprise Java class files.