JP2000330843A - File management system and recording medium recording program for the system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of an event that a referring side file can not be executed and an event that a file to be referred to can not be detected at the time of referring to the information on the file from the reference side when a file to be referred to by a certain file is moved or deleted or its name is changed. SOLUTION: In the file management system, each of files 1, 2 is provided with a data area for storing file data and a variable length file attribute information area for storing the attribute information on data stored in the data area, reference information 11, 21 expressing logical position information 22, 12 having the hierarchical directory structure of the other file to be referred to by the file concerned or the other file referring to the file concerned are included in respective file attribute information areas and a reference information updating means 5 dynamically updates the reference information in the file attribute information area of the other reference side file on the basis of the file reference information interlocking with operation for moving or deleting the file or changing its file name.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file management system which manages a file as a logical information storage unit in an information storage medium such as a magnetic disk using a logically hierarchical tree structure (directory structure). About.

[0002]

2. Description of the Related Art A conventional file management system does not hold information on the mutual reference / reference relationship of files among a plurality of arbitrary files, and has no means for associating them. For this reason, any operation performed by the operator on the information file breaks the mutual reference relationship between the files, making it impossible to execute the program and refer to the information file. There has been a problem in terms of maintenance management, such as the file structure once determined cannot be easily changed as the size increases.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a file for managing a file which is a logical information recording unit in an information storage medium such as a magnetic disk using a logically hierarchical tree structure (directory structure). In the management system, the file referred to by a certain file (referenced file) is moved, deleted, renamed, etc., so that the referenced file cannot be executed or information from the referencing side An object of the present invention is to provide a file management system that prevents an event that a referenced file is not found for a reference to a file and enables free arrangement of files.

[0004]

In order to solve the above-mentioned problems, the invention according to claim 1 uses a logically hierarchical tree structure (directory structure) to logically store information in an information storage medium such as a magnetic disk. In a file management system that manages a file as a storage unit of information, in each file, a data area for storing file data, and a variable-length file attribute information area for storing attribute information of data held in the data area are provided. And the file attribute information area includes, in the file attribute information area, reference information indicating logical location information in a hierarchical directory structure of another file referenced by the file or another file referenced by the file, and moves or deletes the file. Or the file attribute information area of another file on the referring side based on the reference information of the file in conjunction with the operation of changing the name. It is characterized in that it comprises a reference information updating means for dynamically updating the reference information in the.

According to a second aspect of the present invention, when the file is a file which refers to another file, the reference instruction indicating the reference information held in the file attribute information area in the data area of the file. It is characterized by holding information. Further, the present invention is configured using a computer, and in that case, a program executed by the computer can be recorded on a computer-readable recording medium and distributed.

According to the file management system of the present invention,
Since the area for managing the attributes of the file has the logical position information of the file having the reference relation, it is possible to maintain the cross-reference relation between the files as much as possible even when an operation is performed on the file.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing an embodiment of a file management system according to the present invention.
FIG. 1A shows a block configuration of a file management system, and FIG. 1B shows a configuration of a file used in the file management system.

Referring to FIG. 1A, according to the present embodiment, an operator operates an input device 4 such as a keyboard or a pointing device for inputting an operation on a file, and performs an operation from the input device 4 by the operator. And a data processing device 6 that moves, deletes, renames, and the like the operation target file stored in the storage device 7 according to the contents of the operation.

The storage device 7 is composed of an information storage medium such as a magnetic disk, and stores a file, which is a logical information storage unit, using a logically hierarchical tree structure (directory structure). In the example shown in FIG.
Storage device 7 stores file 1 at logical location 12 and
It is assumed that the file 2 is stored in the logical position 22.

[0010] File 1 and file 2 are shown in FIG.
As shown in (b), each of them is configured to have a data area for storing data of a file and a variable-length file attribute information area for storing attribute information of data held in the data area. In this case, if file 1 is a file that refers to file 2, file 1
The file attribute information area contains the reference information 11 storing the logical position (logical position 22) in the hierarchical structure of the reference destination file (file 2), and the file 2 is the reference source file (file 1). The reference information 21 storing the logical position (logical position 12) in the hierarchical structure of the file attribute information area is included in the file attribute information area. A plurality of pieces of reference information can be included in the file attribute information area,
In this case, one file can refer to a plurality of files.

Further, since the file 1 is a file that refers to another file, reference instruction information 13 that points to the file reference information 11 is embedded in the data area as information that indirectly points to the file 2 to be referred to. . This reference instruction information is obtained, for example, when the file of the reference source (file 1) is changed to another file (file 2) at execution.
If the file is in an executable format that requires
Conventionally, it is used as an alternative to the one that directly holds the logical position information of another file to be referenced or updated in the executable information in the data area. Alternatively, for example, when the reference source file (file 1) is an information file holding information indicating another file having document information, image information, and the like in the data area, the reference instructing information has been conventionally used. It is used as an alternative to the one that directly holds the logical position information of another file referenced in the area.

The data processing device 6 includes an input device 4 for an operator.
The reference information updating means 5 for updating the respective reference information of the mutually related files in accordance with the contents of the file operation received from the user, and the content of the file operation is further transmitted from the reference information updating means 5, and the file hierarchy File operation means 3 for moving or copying a logical position in the structure, changing the file name without changing the logical position, or deleting the file from the hierarchical structure.

For example, if an operation on the file 2 is performed on the input device 4, the reference information updating means 5
Receives the operation of the operator from the input device 4 ((1)), acquires the reference information 21 of the file 2 to be operated according to the operation content, and obtains the file from the logical position 12 where the reference information 21 is stored. File 1 referring to file 2 is specified, and the reference information of file 1 is updated in accordance with the file operation on file 2 transmitted from input device 4 ((2)). Further, the file operation unit 3 does not move, copy, or change the logical position in the file hierarchical structure with respect to the file 2 according to the file operation further transmitted from the reference information updating unit 5 ((3)). The file name is changed or deleted from the hierarchical structure ((4)).

An example in which the file 2 is moved will be described more specifically. It is assumed that the logical position 22 is moved to the logical position 22 'between the hierarchical structures of the reference destination file 2 by the operation of the input device by the operator. In this case, the file operation accepted by the input device 4 is the
Is notified that the reference destination file 2 has been operated, and the reference information updating means 5 acquires the reference information 21 of the reference destination file 2 and refers to the reference destination file 2 from the logical position 12. The original file 1 is specified. Then, the reference information updating means 5 updates the logical position 22 of the reference destination file 2 stored in the reference information 11 of the reference source file 1 to a logical position 22 '. Thereafter, the file operation means 3 to which the file operation content is further transmitted moves the reference destination file 2 to the logical position 22 '. As a result, it is possible to prevent a situation in which the reference destination file 2 is not found due to the execution of the reference source file 1 or the reference of information, and it is possible to freely relocate mutually related files.

Next, the operation of this embodiment will be described in detail with reference to FIGS. As shown in FIG. 2, the reference information updating unit 5 that has received a file operation from the input device 4 by the operator (401), if the operation of the input file is a movement in the file hierarchical structure ( 501), and performs reference information update processing 1 (50)
2). In the reference information update processing 1 (FIG. 3), if the operation target is the reference destination file 2 on the side to be referred to, (100
1), the logical position 22 'to which the reference destination file 2 is moved
(1002), the reference information 21 of the reference destination file 2
The reference source file 1 is specified by the logical position 12 of the file stored in the reference file (1003, 1004), and the logical position information of the reference destination file 2 in the reference information 11 of the reference source file 1 is updated to the logical position 22 '. (1005) The content of the file moving operation is transmitted to the file operating means 3. If the operation target is the referencing source file 1 (1001), the logical position 12 '(not shown) to which the referring source file 1 is moved is acquired (1006). The reference destination file 2 is specified by the logical position 22 of the file stored in the reference information 11 of (1) (1).
007, 1008), reference information 21 of reference destination file 2
Logical position information of the reference source file 1 in the logical position 12 '
(1009), and the content of the file moving operation is transmitted to the file operating means 3.

Referring to FIG. 2, if the operation of the input file is copying in the hierarchical structure of the file (503), reference information update processing 2 is performed (504). In the reference information update processing 2 (FIG. 4), if the operation target is the reference destination file 2 on the side to be referred to (2001), a reference destination file 2 ′ that is a copy of the reference destination file 2 is created and referenced. Since the destination file 2 ′ is no longer referenced from the reference source file 1, the reference information 21 ′ of the reference destination file 2 ′ is deleted (2002), and the contents of the file copy operation are transmitted to the file operation means 3. If the operation target is the referencing source file 1 (2001), the logical position 12 'which is the copy destination of the referring source file 1 is acquired (2).
003), a reference source file 1 'which is a copy of the reference source file 1 is created, and reference information 11' of the reference source file 1 'is created.
The reference destination file 2 is specified by the logical position 22 of the file stored in (2) (2004, 2005), and reference information 21 ′ storing the logical position 12 ′ of the reference source file 1 ′ is added to the reference destination file 2 ( 2006), the content of the file moving operation is transmitted to the file operating means 3.

Referring to FIG. 2, if the operation of the input file is to change the file name (505),
The reference information updating process 3 is performed (506). In the reference information update process 3 (FIG. 5), if the operation target is the referenced file 2 on the side to be referenced (3001), the logical position 12 of the file stored in the reference information 21 of the referenced file 2 The reference source file 1 is specified by (3002, 30
03), the name of the reference destination file 2 in the reference information 11 of the reference source file 1 is changed (3004), and the contents of the file name change operation are transmitted to the file operation means 3. Also,
If the operation target is the reference source file 1 on the reference side (3001), the reference destination file 2 is specified by the logical position 22 of the file stored in the reference information 11 of the reference source file 1 (3005, 3006). ), The name of the reference source file 1 in the reference information 21 of the reference destination file 2 is changed (3005), and the file name change content of the file is transmitted to the file operation means 3.

In FIG. 2, if the operation of the input file is to delete the file (50)
7), perform reference information update processing 4 (508). In the reference information update processing 4 (FIG. 6), if the operation target is the referenced file 2 on the side to be referenced (4001), the logical position 12 of the file stored in the reference information 21 of the referenced file 2 Specifies the source file 1 by (400
2, 4003), and presents to the operator that the operation target file is referenced by the reference source file 1 (4, 4003).
004) The operator confirms the deletion of the referenced file 2 which is the operation target file (4005). If the intention of the deletion is confirmed, the reference storing the logical position information of the referenced file 2 is confirmed. The reference information 11 of the original file 1 is deleted (4006), and the contents of the file deletion operation are transmitted to the file operation means 3. If the operation target is the reference source file 1 on the reference side (4001), the reference destination file 2 is specified by the logical position 22 of the file stored in the reference information 11 of the reference source file 1 (4001).
7, 4008), and presents to the operator that the operation target file refers to the reference destination file 2 (400).
9) It is checked with the operator whether the reference destination file 2 is to be deleted at the same time (4010). If the reference destination file 2 is to be deleted, the file operation means 3 includes the file including the deletion of the reference destination file 2 In the case where the content of the deletion operation of the reference destination file 2 is transmitted and the reference destination file 2 is not deleted, after deleting the reference information 21 of the reference destination file 2 storing the logical position information of the reference source file 1 (4011), the file operation means 3, the contents of the file deletion operation are transmitted.

The file operation means 3 (FIG. 3) moves, copies, and moves the logical position in the hierarchical structure of the file according to the contents of the file operation further transmitted from the reference information updating means 5.
The file name whose logical position does not change is changed or deleted from the hierarchical structure (301).

The above-described embodiment is realized by a computer and its peripheral devices, and a program executed by the computer. Further, the program executed by the computer is recorded on a computer-readable recording medium. It is possible to distribute.

[0021]

The effect of the present invention is as follows. By retaining reference information for storing the logical position in the hierarchical structure of another file referred to or referred to by the file in the attribute information area of the file, Prevents the referenced file from being found due to operations such as moving, deleting, or renaming the file that is being referenced or the information being referenced from the referencing side, and free arrangement of files. Is to be possible.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration (a) of a file management system according to the present invention and a file format (b) used therein.

FIG. 2 is a flowchart showing an operation of the file management system of FIG. 1;

FIG. 3 is a flowchart showing an operation of reference information update processing 1 (502) of FIG. 1;

FIG. 4 is a flowchart showing an operation of reference information update processing 2 (504) in FIG. 1;

FIG. 5 is a flowchart showing an operation of a reference information update process 3 (506) of FIG. 1;

FIG. 6 is a flowchart showing an operation of reference information update processing 4 (508) of FIG. 1;

[Description of Signs] 3 File operation means 5 Reference information updating means 6 Data processing device 7 Storage device

Claims (3)

[Claims] 1. A file management system that manages files as storage units of logical information in an information storage medium such as a magnetic disk using a logically hierarchical tree structure (directory structure). It has a data area for storing file data, and a variable-length file attribute information area for holding attribute information of data held in the data area, and the file refers to the file attribute information area. Contains reference information indicating the logical location information of another file or another file that refers to the file in the hierarchical directory structure. Based on the reference information of the file, linked to the operation of moving, deleting, or renaming the file Reference information updating means for dynamically updating the reference information in the file attribute information area of the other file on the reference side. File management system for the butterflies. 2. When the file is a file that refers to another file, reference instruction information indicating reference information stored in a file attribute information area is stored in a data area of the file. Claim 1
The file management system described. 3. A computer-readable recording medium in which the file management system according to claim 1 is configured using a computer, wherein a program executed by the computer is recorded.