System and method for managing long names in an application programming interface

• US 7,676,797 B2
• Filed: 01/31/2005
• Issued: 03/09/2010
• Est. Priority Date: 01/31/2005
• Status: Active Grant

• Current Assignee: CA, Inc. (d/b/a CA Technologies) (Broadcom, Inc.)
• Original Assignee: Computer Associates Think Inc. (Broadcom, Inc.)
• Inventors: Broadhurst, James
• Primary Examiner(s): Zhen; Wei Y
• Assistant Examiner(s): Chen; Qing
• Application Number:
  US11/047,101
• Publication Number:
  US 20060173931A1
• Time in Patent Office: 1,863 Days
• Field of Search: 717/110, 717113-119, 717/124, 717134-138, 707/100, 707/23, 707/26, 707/27, 341/50, 341/90, 341104-106
• US Class Current: 717/138
• CPC Class Codes: G06F 9/45504 Abstract machines for programme code execution, e.g. Java virtual machine [JVM], interpreters, emulators

Abstract

Software managing long names in an application programming interface receives a request to perform a requested operation on one or more fields, the application comprising a first operation operable to perform the requested operation on at least one field type. The software determines whether the field type of any of the fields is incompatible with the first operation. If the field types of the one or more fields are compatible with the first operation, then the software performs the requested operation on the one or more fields using the first operation. If the software determines that the field type of at least one of the fields is incompatible with the first operation, then it converts the request into a call for a second operation operable to perform the requested operation on the one or more fields and performs the requested operation using the second operation.

Claims

1. A computer-implemented method for performing operations on fields, comprising:

receiving, by a computing device, a request to perform a requested operation on one or more fields, wherein a first operation operating on the computing device performs the requested operation when the one or more fields are in a format that is compatible with the first operation;

determining, by the computing device, whether the one or more fields are compatible with the first operation;

when the one or more fields are in a format that is compatible with the first operation, performing, by the first operation operating on the computing device, the requested operation on the one or more fields using the first operation to generate results of the requested operation on the one or more fields; and

when the one or more fields are in a format that is not compatible with the first operation for at least a reason that at least one of the one or more fields includes a token representing additional information and an expanded size of the at least one of the one or more fields with the additional information would exceed a maximum field size for the first operation;

generating one or more instructions that emulate the first operation, wherein the generated one or more instructions are compatible with the requested operation on the one or more fields,

generating a request to perform a second operation, the request including the generated one or more instructions, wherein the second operation performs the requested operation by processing the generated one or more instructions including performing the requested operation on the at least one of the one or more fields with the additional information, and

receiving results from the second operation.

2. The computer-implemented method of claim 1, wherein:

the one or more fields are character fields; and

at least one of the one or more fields is a variable-length character field.

3. The computer-implemented method of claim 1, wherein the requested operation is selected from the group consisting of a Compare Logical Characters (CLC) operation and a Move Character (MVC) operation.

4. The computer-implemented method of claim 1, wherein determining whether the one or more fields are compatible with the first operation comprises:

determining whether the one or more fields include the token; and

if the one or more fields include the token, determining based at least in part on the token whether the one or more fields are compatible with the first operation.

5. The computer-implemented method of claim 1, wherein:

the requested operation comprises a Move Character (MVC) operation requiring a moved character to be converted from a first character format to a second character format; and

the second operation comprises a character converter operable to convert the moved character from the first character format to the second character format.

6. The computer-implemented method of claim 5, wherein:

the first character format is Extended Binary Coded Decimal Interchange Code (EBCDIC); and

the second character format is Unicode.

7. The computer-implemented method of claim 1, wherein said generating one or more instructions that emulate the first operation further comprises:

examining the first operation; and

determining information that is used to emulate the first operation from the examined first operation, wherein the generated one or more instructions are based on the determined information.

8. The computer-implemented method of claim 1, wherein the second operation is executed on a second computing device that is remote to the computing device.

9. A computer readable medium storing computer executable instructions for performing operations on fields, the computer executable instructions operable when executed by one or more processors to cause the one or more processors to perform a plurality of operations comprising:

receiving, at an application, a request to perform a requested operation on one or more fields, the application comprising a first operation operable to perform the requested operation when the one or more fields are in a format that is compatible with the first operation;

determining whether the one or more fields are compatible with the first operation;

when the one or more fields are in a format that is compatible with the first operation, performing the requested operation on the one or more fields using the first operation to generate results of the requested operation on the one or more fields; and

when the one or more fields are in a format that is not compatible with the first operation for at least a reason that at least one of the one or more fields includes a token representing additional information and an expanded size of the at least one of the one or more fields with the additional information would exceed a maximum field size for the first operation;

generating one or more instructions that emulate the first operation, wherein the generated one or more instructions are compatible with the requested operation on the one or more fields,

generating a request to perform a second operation, the request including the generated one or more instructions, wherein the second operation performs the requested operation by processing the generated one or more instructions including performing the requested operation on the at least one of the one or more fields with the additional information, and

receiving results from the second operation.

10. The computer readable medium of claim 9, wherein:

the one or more fields are character fields; and

at least one of the one or more fields is a variable-length character field.

11. The computer readable medium of claim 9, wherein the requested operation is selected from the group consisting of a Compare Logical Characters (CLC) operation and a Move Character (MVC) operation.

12. The computer readable medium of claim 9, wherein the determining whether the one or more fields are compatible with the first operation comprises:

determining whether the one or more fields include the token; and

if the one or more fields include the token, determining based at least in part on the token whether the one or more fields are compatible with the first operation.

13. The computer readable medium of claim 9, wherein:

the requested operation comprises a Move Character (MVC) operation requiring a moved character to be converted from a first character format to a second character format; and

the second operation comprises a character converter operable to convert the moved character from the first character format to the second character format.

14. The computer readable medium of claim 13, wherein:

the first character format is Extended Binary Coded Decimal Interchange Code (EBCDIC); and

the second character format is Unicode.

15. The computer readable medium of claim 9, wherein said generating one or more instructions that emulate the first operation further comprises:

examining the first operation; and

determining information that is used to emulate the first operation from the examined first operation, wherein the generated one or more instructions are based on the determined information.

16. The computer readable medium of claim 9, wherein the first operation is executed on a first computing device and the second operation is executed on a second computing device.

17. A system for performing operations on fields, comprising:

one or more processors configured to execute an application, the application comprising;

a first operation configured to;

perform a requested operation on one or more fields to generate results of the requested operation when the one or more fields are in a format that is compatible with the first operation, wherein at least one of the one or more fields comprises a token representing additional information, wherein an expanded size of the at least one of the one or more fields with the additional information would exceed a maximum field size for the first operation; and

a second operation configured to;

determine whether the one or more fields are compatible with the first operation,

generate one or more instructions that emulate the first operation, wherein the generated one or more instructions are compatible with the requested operation on the one or more fields in response to detecting that the one or more fields are not compatible with the first operation,

generate a request to perform a third operation, the request including the generated one or more instructions, wherein the third operation performs the requested operation by processing the generated one or more instructions including performing the requested operation on the at least one of the one or more fields with the additional information, and

receive results from the third operation.

18. The system of claim 17, wherein the second operation is operable to determine whether the one or more fields are compatible with the first operation when the one or more fields include the token representing additional information.

19. The system of claim 17, wherein:

the requested operation comprises a Move Character (MVC) operation requiring a moved character to be converted from a first character format to a second character format; and

the second operation comprises a character converter operable to convert the moved character from the first character format to the second character format.

20. The system of claim 17, wherein the requested operation comprises a Compare Logical Characters (CLC) operation.

21. The system of claim 17, wherein:

the one or more fields comprise character fields;

the requested operation requires at least one of the one or more fields to be converted from a first character format to a second character format; and

the third operation is operable to convert the at least one of the one or more fields from the first character format to the second character format.

22. The system of claim 21, wherein:

the first character format is Extended Binary Coded Decimal Interchange Code (EBCDIC); and

the second character format is Unicode.

23. The system of claim 17, wherein said generate one or more instructions that emulate the first operation further comprises:

examining the first operation; and

determining information that is used to emulate the first operation from the examined first operation, wherein the generated one or more instructions are based on the determined information.

24. The system of claim 17, wherein the first operation is executed on a first computing device and the second operation is executed on a second computing device.