JPH02122339A - Method and device for automatic production of file access procedure - Google Patents

Abstract

PURPOSE:To facilitate the description and to improve the maintenability with the title method and device by storing previously the information on the file constitution, the information on the relation among component elements, and the information on the available component elements. CONSTITUTION:A file structure memory part 11 stores the component elements of a file record and a key element among those component elements. A relative memory part 12 stores the procedure to decide the values of component elements of plural file records and plural component elements necessary for execution of the procedure. A procedure lead-out part 14 retrieves the procedure which decides the values of component elements and the available component elements and leads out the file access procedure and the deciding procedure. Then the information on the file constitution, the relation among the component elements, and the available component elements are previously stored. Thus it is possible to automatically produce the file access procedure necessary for decision of the values of component elements just by describing the requested component elements. Then the description is facilitated and the maintenability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic file access procedure generation method for automatically generating file access procedures for a program that uses a plurality of files.

BACKGROUND OF THE INVENTION Conventionally, in order to retrieve the values of the constituent elements of a requested record by accessing multiple files or repeating calculations, the entire procedure had to be written in a program. For the file shown in the file structure diagram in Figure 3, the values of A1 and A2 can be used, and B1 is 83.
When the value of 01 is determined by adding B3 to B2, the file access procedure for extracting the value of C4 is as shown in the procedure diagram of FIG. Previously, all of this procedure had to be written within the program.

Problems to be Solved by the Invention However, in conventional methods, as the number of files increases, the steps for accessing the files and the steps for determining the values of components increase, which increases the amount of procedure descriptions and makes the program complicated. It becomes difficult to describe. Furthermore, in response to changes in file structure and relationships between constituent elements, more parts of the program must be directly modified, making maintenance difficult.

In view of this, the present invention automatically generates a file access procedure to determine the value by simply describing the component whose value is required to be extracted, thereby reducing the number of items that must be described. An object of the present invention is to provide an automatic file access procedure generation device and method that facilitates the description by limiting it only to the object for which it is intended, and improves maintainability by limiting changes to the description by modification.

Means for Solving the Problems In order to solve the above problems, the present invention provides a file structure storage unit that stores the constituent elements of records of a file and key elements therein, and the values of the constituent elements of records of multiple files. an associated storage unit that stores a procedure for determining a value and a plurality of components whose values are required to execute the procedure; a usage element storage unit that stores all components whose values are determined and that can be used at the time of a request; The file structure storage section is used to search for a file access procedure, the related storage section is used to search for a procedure for determining the value of a component, the usage element storage section is used to search for a component whose value can be used, and the file This method includes a procedure derivation unit that derives an access procedure and a determination procedure, and automatically generates a file access procedure for determining the value of a requested component.

By using the method described above, information on the structure of the file, information on the relationship between the constituent elements, and information on the available constituent elements are stored in advance, so that it is possible to simply describe the required constituent elements. , the file access procedure necessary to determine its value can be automatically generated, reducing the number of items that need to be written, making it easier to write, and improving maintainability.

Embodiment FIG. 1 is a configuration diagram showing an embodiment of the present invention. 11
12 is a file structure storage unit that stores file record components and key elements therein; 12 is a procedure for determining the values of the record components of multiple files; 13 is a usage element storage unit that stores all the components whose values that can be used at the time of a request have been determined; and 14 is a storage unit that stores file access procedures and determination procedures using the three storage units. The procedure derivation part to be derived is shown.

FIG. 2 uses a flowchart to explain a method of automatically generating a file access procedure for determining the value of a requested component using these methods. By 21,
It is searched whether the given component is stored in the used element storage section 13 and its value has been determined. If it has been determined, in step 22, a procedure that uses the determined value is set as the target procedure. If it has not been decided, then according to 23,
The file structure storage unit 11 is searched for the key component of the file to which the given component belongs. 24
Then, our method determines whether file access procedures can be automatically generated for all of these components. However, if the given component is included in the key, it cannot be automatically generated. If everything can be automatically generated, 2
In step 5, a procedure for accessing the file to which the given component belongs is added to these automatically generated procedures to obtain a target procedure. If even one of the components cannot be automatically generated, in step 26, the components necessary for the procedure for determining the value of the given component are retrieved from the related storage unit 12. In step 27, it is determined by this method whether file access procedures can be automatically generated for all of these components. If all can be automatically generated, in step 28, a procedure for determining the value of a given component is added to these automatically generated procedures to form a target procedure. If even one element cannot be automatically generated, the file access procedure for the given component cannot be automatically generated and ends at 29.

FIG. 3 shows an example of key elements among the constituent elements of a record of a file stored in the file structure storage unit. A, B, C are file identification names, A1
, A2, A3, A4, B1, B2, B3,
C1, C2, C3, and C4 indicate identification names of constituent elements of each file.

FIG. 4 shows an example of a procedure for determining the values of constituent elements of a plurality of files stored in the related storage unit I2 and a plurality of constituent elements whose values are required to execute the procedure.

FIG. 5 shows an example of components whose values can be used, which are stored in the usage element storage unit 13.

FIG. 6 shows an example of a component whose value is required to be retrieved.

FIG. 7 shows the procedure necessary to determine the values of the components shown in FIG. 6, generated by the method shown in FIG. 2 using the information shown in FIGS. 3 to 5. Give an example.

An example of operation for generating the procedure shown in FIG. 7 is shown. Provide C4 as the required component.

21, the usage element storage unit 13 is searched. Since C4 has not been determined, the process moves to step 23, the file structure storage section 11 is searched, and the key component C1 is extracted. 2
4, this method is applied as a component requiring C1. 21, the usage element storage unit is searched. C1
has not been determined, so at 23 the file structure storage unit 11
is searched and the component C1, which is the seventh key, is extracted. Since C1 is included in the key, it cannot be automatically generated. 26, the related storage unit 12 is searched and the components B2 and B3 necessary for determining the value are taken out. In step 27, apply this method to B2° and B3. 21, the usage element storage unit 13 is searched. B2. Since B3 has not been determined, the file structure storage unit 11 is searched at 23, and B2. Extract component B1, which is the key of the file to which B3 belongs. At step 24, apply this method to B1. In step 21, the usage element storage unit is searched. B
1 has not been determined, so 23 is the file structure storage section 1.
1 and extracts the key component B1. B1
cannot be automatically generated because it is included in the key. At step 26, the related storage unit 12 is searched and the component A3 necessary for determining the value is taken out. At step 27, apply this method to A3. 7. The usage element storage unit 13 is searched with. Since A3 has not been determined, the file structure storage unit 11 is searched at 23, and the key components Al and A2 are extracted. In step 24, this method is applied to Al and A2. 21, the usage element storage unit 13 is searched. Since At and A2 have been determined in step 22, those values are used. Since the procedure for A1°A2 was automatically generated, (1) in FIG. 7 is added as a file access procedure for A3 in step 25. Since the procedure for A3 has been automatically generated, (2) in FIG. 7 is added as the file access procedure for B1.

Since the procedure for B1 was automatically generated, in step 25, (3) in Figure 7 was converted to B2. Added as a file access procedure for B3. B2. Since the procedure for B3 has been automatically generated, (4) in FIG. 7 is set as the file access procedure for 01 at step 28. Since the procedure for C1 was automatically generated, (5) in Figure 7 was changed to 04 at 25.
In addition, (1) to (5) in FIG. 7 are completed as file access procedures for 04.

Effects of the Invention According to the present invention, required components are stored in advance by storing information regarding the structure of a file, information regarding relationships between components, and information regarding available components. By simply describing the value, the file access procedures necessary to determine the value can be automatically generated. As a result, the number of items that need to be written is reduced, making writing easier and improving maintainability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a file access procedure automatic generation device according to an embodiment of the present invention, and FIG. 2 is a flowchart showing a file access automatic generation method for determining the value of a requested component using this device. , FIG. 3 is a structural diagram showing an example of the constituent elements of a file record stored in the file structure storage section and key elements therein, and FIG. A related diagram showing a procedure for determining the value of a file component and an example of multiple components whose values are required to execute the procedure. Figure 5 shows a configuration in which the values stored in the usage element storage unit can be used. A structural diagram showing an example of an element, Figure 6 is a +t4 diagram showing an example of a component whose value is required to be retrieved by file access, and Figure 7 is a diagram showing the requested value automatically generated by the present invention. FIG. 3 is a procedure diagram illustrating an example of a procedure necessary to determine the value of a component. DESCRIPTION OF SYMBOLS 11... File structure storage part, 12... Associated storage part, 13... Utilization element storage part, 14... Procedure derivation part. Name of agent Patent attorney Shigetaka Kurino Haka 18 Funeral Map Diagram Diagram Diagram Diagram Diagram Diagram Diagram Diagram Diagram Diagram Procedure Amendment (Method) % Formula % 1 Indication of Case 1988 Patent Application No. Name of Invention Relationship between file access procedure automatic generation device and the case of person who amends the method Patent application
Address 1006 Oaza Kadoma, Kadoma City, Osaka Name (582) Matsushita Electric Industrial Co., Ltd. Representative Tani
Akio I 4 Agent address: 1006 Oaza Kadoma, Kadoma City, Osaka 571 Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] (1) A file structure storage means that stores the constituent elements of a file's records and key elements therein, a procedure for determining the values of the constituent elements of records of multiple files, and a plurality of files whose values are required to execute the procedure. a related storage means for storing the constituent elements, a usage element memory means for storing all the constituent elements whose values are available at the time of a request, and a file access procedure using the file structure memory means; A procedure derivation means is provided for searching a procedure for determining a value of a component using the related storage means, searching for a component whose value can be used using the usage element storage means, and deriving a file access procedure and a determination procedure. . A file access procedure automatic generation device, characterized in that it generates a file access procedure for determining the value of a requested component. (2) A file structure storage unit that stores the constituent elements of a file's records and key elements therein, a procedure for determining the values of the constituent elements of records of multiple files, and multiple files whose values are required to execute the procedure. a related storage section that stores the constituent elements of the file; a usage element memory section that stores all the constituent elements whose values are available at the time of a request; and a file structure memory section that searches for file access procedures; Find a procedure for determining the value of a component using the associated storage,
a procedure derivation unit that uses the usage element storage unit to search for a component whose value can be used and derives a file access procedure and a determination procedure, the file access procedure for determining the value of the requested component; A file access procedure automatic generation method characterized by generating a file access procedure.