JPH0218635A - Decentralized process file control system - Google Patents

Abstract

PURPOSE:To avoid the useless transfer of files by performing the comparison between the updated versions of the host and terminal sides of a processing file in case a changing request is received from the terminal side for said file and transferring the file only when no coincidence is obtained from said comparison. CONSTITUTION:When the terminals T1 and T2 produce the replacement requests of the processing files, an updated version comparison mans 13 set at the side of a host computer H1 compares the replacement version stored in a file control table 11 with the updated versions controlled by the updated version control means 21 and 31 set at the terminals T1 and T2. Then the corresponding processing files held by the computer H1 are transferred to the terminals T1 and T2 and the instructions are given to both terminals T1 and T2 to perform the change via said files as long as the updated version stored in the table 11 is new. In case the updated version of the table 11 is not new, the instructions are given to the terminals T1 and T2 to perform the change via the files held by both terminals. Thus the useless transfer of files can be avoided.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an information processing system in which a plurality of terminals are connected to a host computer, and particularly relates to an information processing system in which a plurality of terminals are connected to a host computer. It relates to a file management method that is operated step by step from a terminal.

[Conventional technology]

Traditionally, the file management method for this type of system was
Either an interactive processing method with centralized processing on the host computer side, or a method in which interactive processing is performed on a terminal personal computer and processing files are always transferred between the host computer and the personal computer before and after the interactive processing. It was getting worse.

(Problem to be solved by the invention) In the conventional file management method described above, in the case of centralized processing on the host computer, it is necessary to send and receive messages between the burner computer and the host computer during processing. Therefore, there is a drawback that it is difficult to perform high-speed screen operations.In the case of a method in which interactive processing is performed on a personal computer and processing files are necessarily transferred before and after processing, there is a disadvantage that it is difficult to perform high-speed screen operations. The disadvantage is that it always requires time.

[Failure to solve the problem]

The distributed processing file management method of the present invention is provided in a terminal, and when a retained processing file is changed, the updated version of the file is managed, and the terminal side updates that transfers the changed file to the host computer. A version control means, a file management table provided in the host computer in which updated versions of processing files are recorded, and each time a file is updated on the terminal side, the updated version is stored in the file management table corresponding to the file. The host side update version management means to record, and when the terminal side issues an update request for a processing file, the update version recorded in the file management table of the file and the update version managed by the terminal side update version management means. If the updated version of the file management table is newer, the terminal is instructed to transfer the corresponding processing file held by the host computer to the terminal and make changes using that file, and the file management table is updated. and update version comparison means for instructing the terminal to make changes using a file held on the terminal side if the updated version is not newer.

(Operation) The updated version of the processing file is managed on the host computer and the terminal side, and when the terminal side issues a request to change the processing file, the updated version of the file on the host side and the terminal side is compared, Since files are transferred only when they are different, it is no longer necessary to transfer files and send and receive messages each time a file is changed.

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of an information processing system to which the distributed processing file management method of the present invention is applied, and FIG. 2 shows the file management table 11 of the host computer H1 and the file management table 11 of the personal computer T1. It is a diagram showing the transition of updated versions of processing files Fl and F2 within T2.

The information processing system of this embodiment is a host computer H.
Burnal computers Tl and T2 are connected as terminals to the host computer H1 and burnal computer TI.

Each of T2 has storage areas for processing files Fl and F2.

The host computer H1 has a file management table 11
, update version management means 12 , update version comparison means 13 , and file transfer means 14 . The file management table 11 is a processing file F1 or F2.
When a change occurs, the updated version resulting from the change and the name of the terminal that made the change are recorded by the updated version management means 12 in correspondence with the file. When receiving a request to change the processing files Fl and F2 from the terminal, the update version comparing means 13 compares the corresponding update version in the file management table 11 with the update version managed on the terminal side and updates the file. If the updated version of the management table 11 is new, the file transfer means 14 instructs the terminal to transfer the processing file held by the host computer H1 to the terminal and change the file using that file, and the file management If the table 11 is updated and the version is new, the terminal is instructed to make changes using the file held in the terminal.

The personal computers TI and T2 each have an update version management means 21.31 and a file transfer means 22.31.
32. Update version control means 21.3
1 manages the update of the file when the processing file F1 or F2 is changed in each personal computer, and after the file is changed, the file is transferred to the host computer H1 by the file transfer means 22 and 23.

Next, the operation of this embodiment will be explained.

Here, the personal computers TI and T2 are each equipped with a process A consisting of a series of steps 1, 2.3, in which the personal computer T1 in step 1 processes the processing files Fl and F2, and in steps 2 and 3 the personal computer Assume that computer T2 changes Fl and F2.

First, as shown in FIG. 2(a), the updated versions of processing files Fl and F2 are both recorded as "0" in the file management table 11 of the host computer H1, but the update versions of the processing files Fl and F2 are both recorded as "0" in the initial state. , T2
There is no version.

First, when the personal computer T1 issues a request to change the processing files Fl and F2 and is about to start step 1 of the process A, the update version comparison means 13 of the host computer H1 updates the file management table 11 and the personal computer T1. Processing files Fl, F2
Compare updated versions of. Here, both updated versions are in the initial state, and the personal computer T1
Since the updated version is not recorded in the host computer H1, it is determined that the updated version of the host computer H1 is newer, and the file transfer means 14 transfers the processing files Fl and F2 to the personal computer T1. After receiving the processing files Fl and F2, the personal computer T1 executes step 1 for processing. After the execution is completed, the personal computer T is used to update the contents of the processing file held by the host computer H1.
1 to the host computer H1 for processing file Fl,
Transfer F2. At that time, host computer H1
The update version management means 12 of the personal computer T1 updates the file management table 11, and the update version management means 21 of the personal computer T1 records the updated version. As a result, the updated version is created in the file management table 1 as shown in Figure 2(b).
1, the name of the terminal that made the change, that is, the personal computer "T1" is recorded, and the version is "
]", and the version on the personal computer T1 side becomes 1" as well.

Next, when the personal computer T2 attempts to execute step 2 of process A, the host computer H
Comparison of updated versions is performed on the first side. Here, the updated version of the personal computer T2 is initially "1" on the host computer H1 side, and since the updated version on the host computer H1 side is newer, the update version of the personal computer T2 processing file F1 is transferred from the host computer H1. Transfer F2. Thereafter, the personal computer T2 executes step 2 of process A, and after execution, the process file F1. Transfer F2 to host computer H1. At that time, the update version is updated in the same way, and as shown in Figure 3 (C), the version is "
2'', and the terminal name in the file management table 11 becomes personal computer T2''.

Next, when you try to execute step 3 of process A on personal computer T2, the host computer H1 similarly compares the updated versions, but at the end of step 2 of process A, both versions are 2''. Since they are equal, processing files F1 and F2 are not transferred.

Therefore, the personal computer T2 transfers the processing files Fl and F2 in order to update the processing files held internally. At that time, the update version is updated in the same way, and as a result, the version becomes "3" and the terminal name becomes "T2" as shown in FIG. 2(d).

[Effects of the Invention] As explained above, the present invention manages updated versions of processing files for interactive processing on the host computer and terminal side, and updates the processing files and terminals held on the host computer side before and after interactive processing. By comparing the updated versions of files held on the side, and only when they are different, automatically transferring the file for processing from the one with the newer updated version, the desired interactive processing is made local to the terminal, and the order When processing a process consisting of multiple processing steps with different characteristics using any terminal, it is possible to avoid unnecessary file transfers and to exchange messages between the host computer and the host computer during interactive processing. This has the effect of allowing efficient processing without any interaction.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of an information processing system to which the distributed processing file management method of the present invention is applied, and FIG. FIG. 3 is a diagram showing the transition of updated versions of processing files Fl and F2. 11...File management table,
12.21.31... Update version management means, 13... Update version comparison means, 14.22.32... File transfer means,
Hl・・・・・・・・・Host computer, T
l, T2...Personal computer, Fl, F2...
...Processing file.

Claims (1)

[Claims] 1. An information processing system in which a terminal is connected to a host computer, each of the host computer and the terminal holds processing files, and files are transferred and modified between the host computer and the terminal, A terminal-side update version management means for managing an updated version of the file and transferring the changed file to the host computer when a processing file provided and held in the terminal is changed; , a file management table in which an updated version of a processing file is recorded; a host-side update version management means for recording an updated version in the file management table in correspondence with the file each time a file is updated on the terminal side; When the terminal side issues an update request for a processing file, the update version recorded in the file management table of the file is compared with the update version managed by the terminal side update version management means, and the file management table is updated. If the updated version is new, the terminal is instructed to transfer the corresponding processing file held by the host computer to the terminal and make changes using that file, and if the updated version of the file management table is new, the terminal A distributed processing file management method comprising an update version comparison means for instructing a terminal to make changes according to a retained file.