Method and process of inter-machine communication and generalized method for program preparation therefor

• US 5,842,205 A
• Filed: 12/02/1993
• Issued: 11/24/1998
• Est. Priority Date: 12/02/1993
• Status: Expired due to Term

• Current Assignee: Sybase Incorporated (SAP SE)
• Original Assignee: VIE Systems, Inc. (SAP SE)
• Inventors: Brann, John E. T.
• Primary Examiner(s): Von Buhr, Maria N.
• Application Number:
  US08/161,229
• Time in Patent Office: 1,818 Days
• Field of Search: 395/600, 395/700, 395/685, 364/DIG. 1, 364/DIG. 2, 707/4, 707/103
• US Class Current: 1/1
• CPC Class Codes: G06F 9/4484 Executing subprograms
• CPC Class Codes: Y10S 707/99934 Query formulation, input preparation, or translation

Abstract

A computer programming method is provided for translating source messages to target messages. The translational steps are described in a database in which all necessary instructions and data are stored. A control program has the limited functions of responding to source messages and accessing the database. The database then directs the control program to access subroutines called translation method programs. The translation method programs then access the source message in a step-by-step process to translate the source message to the target message. The translation method programs send messages to the control program to advise if each step in the translation process has or has not been successfully accomplished. The control program, responding to the database and the translation method programs, then delivers the completely translated target message to the receiver.

Claims

1. A method for responding to a stimulus message, comprising the steps of:

(a) providing a computer, having a control program executing therein;

(b) providing at least two distinct and independent response generation programs for execution by the computer, each response generation program being callable by the control program to process data relating to at least a portion of a stimulus message;

(c) providing a database, associated with the computer, storing information relating to the implementation of an appropriate response to a type of stimulus message, the information identifying optional response generation programs and optional data;

(d) providing a stimulus message to the control program;

(e) accessing the database to retrieve information relating to a type of the provided stimulus message; and

(f) for each identified response generation program;

(i) calling the response generation program, optionally passing data;

(ii) generating an appropriate response to the stimulus message and optional data with the response generation program;

(iii) returning to the control program,

the application processing behavior of the computer being defined by the response generation programs, the information in the database and the stimulus message.

2. The method of claim 1 wherein the stimulus is a source message and the response is a target message, the response generation program being a translation program, for processing the source message and translating at least a portion thereof into the target message, the database storing instructions and data, the control program being limited to responding to the source message, accessing the database, and executing the translation program in response to instructions and data stored in the database.

3. The method of claim 1, further comprising the step of storing instructions and data in the database, including storing response generation program invocation instructions to be acted upon by the control program.

4. The method of claim 1 wherein the database records each include a unique string of characters or function names for each response generation program;

the control program converting function names into appropriate response generation program references.

5. The method of claim 1, further comprising the step of, upon an initialization of the control program in a late binding stage of program execution, causing the control program to access stored database records.

6. The method of claim 5, further comprising the step of, upon initialization, converting function names in database records into appropriate response generation program references.

7. The method of claim 1, wherein the database identifies a sequence of execution of response generation programs.

8. The method of claim 3, wherein the step of storing data and instructions in the database includes providing a sorted table of the range of possible values and a generalized mechanism for searching the table for use with nonalgorithmic responses.

9. The method of claim 2, wherein the step of providing at least two distinct and independent response generation programs includes providing a multiplicity of translation programs;

the step of calling a response generation program includes causing the control program to access the database to obtain a reference to a location of source data, a reference to a location of the target data that translated source data is written to, the maximum lengths of each source data and target data, and a reference to any lookup table designated by the database.

10. The method of claim 2, wherein the step of translation comprises an operation selected from the group consisting of:

copying (with justification to left or right, as determined by the source and target data);

converting from character to integer numeric formats (and vice versa);

converting from character to floating point numeric formats (and vice versa);

converting from floating point to integer numeric formats (and vice versa); and

looking up incoming data file in table of values (output result as characters, integer, or floating point).

11. The method of claim 1, wherein the step of accessing the database to retrieve information relating to a type of the provided stimulus message includes retrieving a reference from the database identifying a response generation program, the data required as parameters by the response generation program, and the data to be returned by the response generation program.

12. The method of claim 11, wherein the step of retrieving a reference to the response generation program comprises retrieving a reference to a function name stored in the database.

13. The method of claim 12, wherein the response generation programs have associated function pointers, further including the step of causing the control program to derive function pointers from the function names stored in the database.

14. The method of claim 2, further comprising the step of, after being called, permitting the translation program to access the database.

15. The method of claim 1, wherein, upon returning to the control program, the response generation program passes a message indicating success or failure in generating the response to the stimulus.

16. The method of claim 1, wherein information passed between the control program and the response generation program has a predetermined format.

17. The method of claim 2, wherein a format of the target and source messages is predetermined.

18. The method of claim 2, wherein the step of translating is a method selected from the group consisting of:

copying, byte-for-byte, with right or left justification;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to a short integer;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to an integer;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to a long integer;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to a floating point number;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to a double precision floating point number;

converting from characters (containing only numeric characters, optional separators for thousands and spaces) to the corresponding short integer value;

converting from characters (containing only numeric characters, optional separators for thousands and spaces) to the corresponding integer value;

converting from characters (containing only numeric characters, optional separators for thousands and spaces) to the corresponding long integer value;

converting from characters (containing only numeric characters, optional separators for thousands, an optional decimal character and spaces) to the corresponding floating point value;

converting from characters (containing only numeric characters, optional separators for thousands, and optional decimal character and spaces) to the corresponding double precision floating point value;

converting from a short integer to a character field;

converting from an integer to a character field;

converting from a long integer to a character field;

converting from a floating point number to a character field;

converting from a double precision floating point number to a character field;

converting from a double precision floating point number to a PICTURE field, as defined in the COBOL programming language;

converting from a PICTURE field, as defined in the COBOL programming language to a double precision floating point number;

setting an arbitrary value in the target field;

adding the source value to the short integer target field;

adding the source value to the integer target field;

adding the source value to the long integer target field;

adding the source value to the floating point target field;

adding the source value to the double precision floating point target field;

subtracting the source value from the short integer target field;

subtracting the source value from the integer target field;

subtracting the source value from the long integer target field;

subtracting the source value from the floating point target field;

subtracting the source value from the double precision floating point target field;

multiplying the source value by the short integer target field;

multiplying the source value by the integer target field;

multiplying the source value by the long integer target field;

multiplying the source value by the floating point target field;

multiplying the source value by the double precision floating point target field;

dividing the source value by the short integer target field;

dividing the source value by the integer target field;

dividing the source value by the long integer target field;

dividing the source value by the floating point target field;

dividing the source value by the double precision floating point target field;

applying a logical, bitwise AND operation between the source field and target field;

applying a logical, bitwise INCLUSIVE OR operation between the source field and target field; and

applying a logical, bitwise EXCLUSIVE OR operation between the source field and target field.

51. A computer readable medium having a program stored thereon, for executing the method according to claim 1.

19. A method of creating programs for operating a computer, in which there is late binding of program elements responding to source stimuli, in which each stimulus is of the type comprising one of a predetermined set of events and one of a predetermined set of data structures, comprising:

(a) providing a control program executing on a computer;

(b) providing the source stimuli to the control program;

(c) providing a database associated with the computer;

(d) storing instructions, data, and the structures of any source stimuli to be acted upon in the database;

(e) causing the control program to access the database;

(f) causing the control program to respond to instructions and data stored in the database, and based on the instructions and data stored in the database selectively invoking at least one application method program for execution on the computer; and

(g) limiting the control program to responding to the source stimulus, accessing the database, and respond to instructions and data stored in the database.

20. The method of claim 19, further comprising providing a set of predetermined application method programs.

21. The method of claim 20, further comprising the step of storing in the database the parameters of all predetermined application method programs;

and wherein the step of causing the control program to respond to the source stimulus comprises causing the control program to transmit, under the direction of instructions and data retrieved by the control program from the database, predetermined structures of parameters to predetermined application method programs.

22. The method of claim 21, wherein the step of storing includes storing the parameters structures in the database.

23. The method of claim 21, wherein the step of causing the control program to transmit parameters further comprises the step of receiving instructions and data by the control program to determine which of any predetermined application method programs are to be invoked.

24. The method of claim 21, wherein the step of invoking includes passing parameters to the application method programs.

25. The method of claim 21, further comprising the steps of providing wrappers;

calling at least one wrapper with control program;

using the at least one wrapper to invoke an application method program or another wrapper.

26. The method of claim 21, in which the step of storing instructions and data in the database includes storing an application method program invocation instruction;

and the control program, in response to the stimulus and the information obtained from the database calling at least one predetermined application method program.

27. The method of claim 25, wherein the step of providing instructions and data to the database includes providing a unique string of characters or function names for each application method program or wrapper;

further comprising the step of converting, with the control program, function names into function pointers.

28. The method of claim 27, further comprising the step of providing means for translating predetermined data of the stimuli to predetermined parameter structures of the application method program and wrappers.

29. The method of claim 19, further comprising the step of causing the control program to retrieve information from the database relating to a temporal sequence of execution of a plurality of response generation programs;

said causing the control program to respond step further comprising in the temporal sequence, invoking each of the plurality of response generation programs for execution on the computer.

30. The method of claim 19, wherein the step of storing instructions, data and the structures of any source stimuli to be acted upon in the database includes providing sorted tables of a range of possible values and a generalized mechanism for searching the table for nonalgorithmic translations.

31. The method of claim 26, wherein the step of providing an application method program includes providing a multiplicity of application method programs;

the step of executing an application method program includes causing the control program to access the database to obtain the parameter structure for the application method program, a reference to the location of the stimulus data, a reference to the location of the application method parameters which must be written to, the maximum lengths of each element of the stimulus structure, the maximum length of the stimulus data and parameter structure, and a reference to any lookup table set forth in the instructions in the database.

32. The method of claim 19 wherein the application processing program translates data in one form into data in another form, the translation being selected from the group consisting of:

copying (with justification to left or right, as determined by the stimulus data and the parameter structure of the application method);

converting from character to integer numeric formats (and vice versa);

converting from character to floating point numeric formats (and vice versa); and

converting from floating point to integer numeric formats (and vice versa);

looking up incoming data in table of values (output result as characters, integer, or floating point).

33. The method of claim 25, wherein the step of calling at least one wrapper comprises providing from the database previously stored instructions and data;

including a reference to the wrapper code;

the data required as parameters by the invoked application method program or wrapper; and

the data to be returned to the control program by the invoked application method program or wrapper.

34. The method of claim 27, further comprising the step of storing a function name as a reference to an application method program in the database.

35. The method of claim 19, further comprising the step of having each invoked application method program provide an indicia to the control program, the indicia indicating a success or failure of execution of that application method program.

36. The method of claim 35, wherein the step of providing the indicia includes, where the control program invokes the application method program, passing the indicia directly to the control program from the application method program.

37. The method of claim 35, wherein the step of providing the indicia includes, where at least one wrapper invokes the application method program, passing the indicia through the invoking wrapper to the control program from the application method program.

38. The method of claim 19, wherein the application processing program translates data in one form into data in another form, the translation being selected from the group consisting of:

copying, byte-for-byte, with right or left justification;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to a short integer;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to an integer;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to a long integer;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to a floating point number;

looking up the source value in a sorted table and setting the target to the value corresponding to the source value, converted to a double precision floating point number;

converting from characters (containing only numeric characters, optional separators for thousands and spaces) to the corresponding short integer value;

converting from characters (containing only numeric characters, optional separators for thousands and spaces) to the corresponding integer value;

converting from characters (containing only numeric characters, optional separators for thousands and spaces) to the corresponding long integer value;

converting from characters (containing only numeric characters, optional separators for thousands, an optional decimal character and spaces) to the corresponding floating point value;

converting from characters (containing only numeric characters, optional separators for thousands, and optional decimal character and spaces) to the corresponding double precision floating point value;

converting from a short integer to a character field;

converting from an integer to a character field;

converting from a long integer to a character field;

converting from a floating point number to a character field;

converting from a double precision floating point number to a character field;

converting from a double precision floating point number to a PICTURE field, as defined in the COBOL programming language;

converting from a PICTURE field, as defined in the COBOL programming language to a double precision floating point number;

setting an arbitrary value in the target field;

adding the source value to the short integer target field;

adding the source value to the integer target field;

adding the source value to the long integer target field;

adding the source value to the floating point target field;

adding the source value to the double precision floating point target field;

subtracting the source value from the short integer target field;

subtracting the source value from the integer target field;

subtracting the source value from the long integer target field;

subtracting the source value from the floating point target field;

subtracting the source value from the double precision floating point target field;

multiplying the source value by the short integer target field;

multiplying the source value by the integer target field;

multiplying the source value by the long integer target field;

multiplying the source value by the floating point target field;

multiplying the source value by the double precision floating point target field;

dividing the source value by the short integer target field;

dividing the source value by the integer target field;

dividing the source value by the long integer target field;

dividing the source value by the floating point target field;

dividing the source value by the double precision floating point target field;

applying a logical, bitwise AND operation between the source field and target field;

applying a logical, bitwise INCLUSIVE OR operation between the source field and target field; and

applying a logical, bitwise EXCLUSIVE OR operation between the source field and target field.

39. A method of generating a translation program for translating each of a set of source messages into a corresponding target message, comprising:

(a) identifying the characteristics of each source message;

(b) for each source message, identifying the characteristics and parameters of a corresponding target message;

(c) deriving the requirements to translate a source message to a corresponding target message;

(d) providing a database;

(e) storing in the database data and instructions corresponding to the steps necessary to translate each member of the set of source messages to a corresponding target message;

(f) providing a plurality of translation method programs, the plurality of translation method programs including, for each type of element of a source message, ones capable of transforming a type of element of the set of source messages to a corresponding type of element of a target message;

(g) storing references in the database to each of the translation method programs;

(h) storing instructions in the database identifying which translation method programs are to be called for a particular source message; and

(i) causing the control program to obtain from the database, upon receipt of a source message, the instructions in the database to direct the control program and call upon identified translation method programs to translate the source message to a corresponding target message,

the operation of the control program being defined by the instructions and data in the database.

40. The method of claim 39, further comprising the step of outputting the target message from the control program.

41. The method of claim 39, wherein the step of for each source message, identifying the characteristics and parameters of a corresponding target message, includes identifying date information elements of the target message and of the source message.

42. The method of claim 39, wherein the step of deriving the requirements to translate includes the step of parsing the source message and a corresponding target message into simple elements, forming correspondences of simple elements of the source message and target message.

43. The method of claim 42, wherein the step of deriving the requirements to translate further includes defining transformations between each of the simple elements of the source message and the simple elements of the target message.

44. The method of claim 43, wherein the step of defining the transformations further comprises determining a sequence of the steps of translation.

45. The method of claim 39, wherein the step of storing comprises storing the steps of translation;

providing in the database at least one table;

storing the data and instructions in the table; and

storing a location of a translation method program and a sequence of calling the translation method program.

46. The method of claim 45, wherein the database resides in a permanent storage location within a computer system, the computer system further having a temporary storage locations, further comprising the step of, upon an initialization of the control program storing in a temporary storage location:

a table containing data used to identify different types of source messages;

pointers for identifying the location of the source fields in the source message;

lookup tables for nonalgorithmic transformations;

instructions identifying circumstances under which a translation method program is to be called; and

a sequence of operations with which to direct the control program.

52. A computer readable medium having a program stored thereon, for executing the method according to claim 39.

47. A method of generating an application program comprising:

(a) defining a possible set of stimulus message types;

(b) separating each stimulus message into one or more simple elements and optionally parameters;

(c) defining a correspondence between each of the set of stimulus message types and a desired response message type, and a correspondence between any optional parameters and desired response message parameters;

(d) defining a transforming algorithm for translating each of the set of stimulus message types to a corresponding one of the response message types, including a sequence of operations to be performed on the simple elements and optional parameters;

(e) storing, in a database, a plurality of addressable tables each storing references to the sequence of operations to be performed on the simple elements and optional parameters for each stimulus message type;

(f) providing, for each operation referred to in the database, an application program capable of performing that operation;

(g) providing a control program for determining a stimulus message type, and accessing the database to retrieve a table corresponding to simple elements of the stimulus message type;

(h) calling, from the control program, applications programs in sequence to transform the simple elements and optional parameters;

(i) transforming sufficient simple elements and optional parameters to construct a translated target message;

(j) outputting the translated target message corresponding to the source message.

48. The method of claim 47, wherein said step of providing, for each operation, an application program capable of performing one of the sequential operation comprises the step of manually creating an application program.

49. The method of claim 47, wherein said step of providing, for each operation, an application program capable of performing one of the sequential operation comprises the step of selecting an application program from a stored set of application programs based on operating behavior of the application programs.

50. The method of claim 47, wherein said step of providing, for each operation, an application program capable of performing one of the sequential operation comprises the step of copying an application program from a library containing a plurality of application programs.

53. A computer readable medium having a program stored thereon, for executing the method according to claim 47.