JP3598875B2 - File management system and recording medium recording a program of the system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a file management system that manages files that are logical information storage units in an information storage medium such as a magnetic disk using a logically hierarchical tree structure (directory structure).
[0002]
[Prior art]
The 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 was a problem in terms of maintenance management, such as the file structure once determined could not be easily changed as the size became larger.
[0003]
[Problems to be solved by the invention]
The present invention relates to a file management system that manages 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). The referenced file cannot be executed due to operations such as moving, deleting, or renaming the file to be referenced (referenced file). It is an object of the present invention to provide a file management system that prevents an event of not being found and enables free arrangement of files.
[0004]
[Means for Solving the Problems]
In order to solve the above problem, the invention according to claim 1 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). File management system, each file 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; The information area contains reference information indicating the logical location information in the hierarchical directory structure of another file referenced by the file or the other file referenced by the file, and the operation of moving, copying, deleting, or renaming the file In conjunction with, the reference information in the file attribute information area of the other file on the reference side is dynamically determined based on the reference information of the file. It includes a reference information updating means new to the reference information update means, file operations move, copy, delete, or a process of determining whether it is a name change, the file operation is a deletion, If the operation target is a reference source file, after the process asking the operator to confirm whether to delete the reference destination file at the same time, the process to delete the reference destination file or the reference destination according to the confirmation result It is characterized in that a process of deleting reference information of a file is performed.
[0005]
Also, in the invention according to claim 2, when the file is a file that refers to another file, reference instruction information indicating the reference information held in the file attribute information area is stored in the data area of the file. It is characterized by doing. In addition, the present invention is configured using a computer, in which case the program executed by the computer can be recorded on a computer-readable recording medium and distributed.
[0006]
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 relationship, even if an operation is performed on the file, cross-reference between the files is performed as much as possible. The relationship can be maintained.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described 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 the file management system, and FIG. 1B shows a file used in the file management system. FIG. 3 is a diagram showing the configuration of FIG.
[0008]
Referring to FIG. 1A, in the present embodiment, an operator accepts an input device 4 such as a keyboard or a pointing device for inputting an operation on a file, and an operation of the operator from the input device 4, and It comprises a data processing device 6 for moving, deleting, renaming, etc., the operation target file stored in the storage device 7 according to the operation content.
[0009]
The storage device 7 is composed of an information storage medium such as a magnetic disk, and stores a file, which is a storage unit of logical information, using a logically hierarchical tree structure (directory structure). In the example shown in FIG. 1A, it is assumed that the storage device 7 stores the file 1 in the logical position 12 and the file 2 in the logical position 22 in advance.
[0010]
As shown in FIG. 1B, file 1 and file 2 each include 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. Is configured. In this case, assuming that the file 1 is a file that refers to the file 2, the file 1 assigns the reference information 11 that stores the logical position (logical position 22) in the hierarchical structure of the other file (the file 2) of the reference destination to the file attribute. The file 2 includes the reference information 21 storing the logical position (logical position 12) in the hierarchical structure of the other file (file 1) of the reference source in the file attribute information area. Note that a plurality of pieces of reference information can be included in the file attribute information area, and in this case, a plurality of files can be referenced from one file.
[0011]
Furthermore, 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. For example, when the reference source file (file 1) is an executable file that requires another file (file 2) at the time of execution, conventionally, the reference instruction information indicates that the file in the data area It is used as a substitute for the one that directly holds the logical position information of another file to be referenced or updated in the possible information. Alternatively, for example, when the reference source file (file 1) is an information file that holds information indicating another file having document information, image information, and the like in the data area, the reference instruction information may be the same as the conventional data. It is used as an alternative to the one that directly holds the logical position information of another file referred to in the area.
[0012]
The data processing device 6 receives the operator's operation from the input device 4 and updates the respective reference information of the mutually related files in accordance with the contents of the file operation. Further, the contents of the file operation are transmitted, and the file operation means 3 moves and copies the logical position in the hierarchical structure of the file, changes the file name without changing the logical position, or deletes the file from the hierarchical structure.
[0013]
For example, when an operation on the file 2 is performed on the input device 4, the reference information updating unit 5 receives the operation of the operator from the input device 4 ((1)), and according to the operation content, the reference information updating unit 5 determines the operation target. The reference information 21 of the file 2 is obtained, the file 1 referring to the file 2 is specified from the logical position 12 stored in the reference information 21, and the file 1 is transmitted to the file 2 from the input device 4. The reference information of the file 1 is updated ((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 in accordance with 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)).
[0014]
An example in which 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 operator from the input device. In this case, the file operation received by the input device 4 notifies the reference information updating means 5 that the operation of the reference destination file 2 has been performed, and the reference information updating means 5 transmits the reference information 21 of the reference destination file 2. Is acquired, and the reference source file 1 which refers to the reference destination file 2 from the logical position 12 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 contents of the file operation are further transmitted moves the reference destination file 2 to the logical position 22 '. This prevents an event that the reference destination file 2 is not found due to the execution of the reference source file 1 or the reference of information, and enables free relocation of mutually related files.
[0015]
Next, the operation of the present 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 movement in a file hierarchical structure ( 501), reference information update processing 1 is performed (502). In the reference information update process 1 (FIG. 3), if the operation target is the reference destination file 2 on the side to be referred to (1001), the logical position 22 ′ to which the reference destination file 2 is moved is acquired (1002). The reference source file 1 is specified by the logical position 12 of the file stored in the reference information 21 of the reference destination file 2 (1003, 1004), and the logical position of the reference destination file 2 in the reference information 11 of the reference source file 1 The information is updated to the logical position 22 '(1005), and the contents of the file moving operation are 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 (1007, 1008), and the logical position information of the reference source file 1 in the reference information 21 of the reference destination file 2 is changed to the logical position. The content is updated to 12 '(1009), and the content of the file moving operation is transmitted to the file operating means 3.
[0016]
Referring to FIG. 2, if the input file operation is copying in a 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 content of the file copy operation is 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 (2003), and the reference which is a copy of the referring source file 1 is obtained. The original file 1 ′ is created, and 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 ′ (2004, 2005). The reference information 21 ′ storing the logical position 12 ′ of 1 ′ is added (2006), and the contents of the file moving operation are transmitted to the file operating means 3.
[0017]
Referring to FIG. 2, if the input file operation is to change the file name (505), reference information update processing 3 is performed (506). In the reference information update process 3 (FIG. 5), if the operation target is the reference destination file 2 on the side to be referred to (3001), the logical position 12 of the file stored in the reference information 21 of the reference destination file 2 Specifies the reference source file 1 (3002, 3003), changes the name of the reference destination file 2 in the reference information 11 of the reference source file 1 (3004), and transmits the contents of the file name change operation to the file operation means 3 I do. 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 contents are transmitted to the file operation means 3.
[0018]
Then, in FIG. 2, if the operation of the input file is to delete the file (507), reference information update processing 4 is performed (508). In the reference information update processing 4 (FIG. 6), if the operation target is the referenced file 2 on the referenced side (4001), the logical position 12 of the file stored in the reference information 21 of the referenced file 2 Specifies the reference source file 1 (4002, 4003), presents to the operator that the operation target file is being referenced by the reference source file 1 (4004), and indicates to the operator the operation target file. The deletion of the reference destination file 2 is confirmed (4005). If the intention of deletion is confirmed, the reference information 11 of the reference source file 1 storing the logical position information of the reference destination file 2 is deleted (4006). Then, 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 (4007). , 4008), presenting to the operator that the operation target file refers to the reference destination file 2 (4009), and confirming to the operator whether to delete the reference destination file 2 at the same time (4010). When the reference destination file 2 is to be deleted, the contents of the file deletion operation including the deletion of the reference destination file 2 are transmitted to the file operation means 3, and when the reference destination file 2 is not deleted, the reference source file 1 is deleted. After deleting the reference information 21 of the reference destination file 2 storing the logical position information (4011), the file operation means 3 is notified of the contents of the file deletion operation.
[0019]
The file operation means 3 (FIG. 3) moves or copies the logical position in the hierarchical structure of the file according to the file operation content further transmitted from the reference information updating means 5, changes the file name without changing the logical position, or changes the logical position. Is deleted (301).
[0020]
The above embodiments are implemented 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 and distributed. It is possible to do.
[0021]
【The invention's effect】
The effect of the present invention is that the file referred to by a certain file can be stored in the attribute information area of the file by storing the reference information for storing the logical position of the file referred to or referred to in the hierarchical structure of another file. To prevent the event that the file to be referred to is not found due to the execution of the file of the referencing side or the reference of the information from the referencing side by operations such as moving, deleting, or renaming, and to enable the free arrangement of the file. It is.
[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 reference information update processing 3 (506) of FIG. 1;
FIG. 6 is a flowchart showing an operation of reference information update processing 4 (508) of FIG. 1;
[Explanation of symbols]
3 file operating means 5 reference information updating means 6 data processing device 7 storage device

Claims (3)

In a file management system that 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), file data is stored in each file. And a variable-length file attribute information area holding attribute information of data held in the data area, and the file attribute information area includes, in the file attribute information area, another file or the file referred to by the file. Including the reference information indicating the logical location information of the other file in the hierarchical directory structure that refers to the file, linked to the operation of moving, copying, deleting, or renaming the file, based on the reference information of the file, Reference information updating means for dynamically updating the reference information in the file attribute information area of the other file on the side ,
The reference information updating means,
Determining whether the file operation is a move, copy, delete, or rename operation;
If the file operation is deletion and the operation target is the reference source file, after the process asking the operator to confirm whether to delete the reference destination file at the same time, the reference destination file is A file management system for performing a process of deleting or a process of deleting reference information of a reference destination file . 2. The file system according to claim 1, wherein when the file is a file that refers to another file, reference instruction information indicating the reference information stored in the file attribute information area is stored in the data area of the file. File management system. 3. A computer-readable recording medium in which the file management system according to claim 1 or 2 is configured using a computer, wherein a program executed by the computer is recorded.

Images