JP2001043120A - Data management device and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data management device which leaves the contents after editing on a local side even if a hang-up or frozen state is occurred while a fault occurs in a network when data are read out of a file server and edited locally and the contents after the editing are saved on the file server, and to provide a recording medium recording a computer program for data management. SOLUTION: When data are read out of the file server S, a copy of the data is stored on a hard disk drive 7 as a nonvolatile memory and the stored copied data are expanded in a RAM 6 to perform operation for editing, etc.; after the contents after the editing are overwritten and saved on the hard disk drive 7, the data are overwritten and saved on the file server FS.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reads data from a file server connected to a network, for example.
The present invention relates to a data management device that stores edited data in a file server, and a recording medium that stores a computer program for data management.

[0002]

2. Description of the Related Art In recent years, in-house LANs, so-called intranets, have become common along with lower prices for various network interfaces and easier network connection at the OS level. Due to the tendency to increase capacity and save space for each client, a file server having a large-capacity storage device is connected to a LAN, and the opportunity for clients to share the storage area of this file server is increasing. I have.

In the case where a file server connected to a LAN is shared by a plurality of clients, it is naturally necessary to pay attention to data management, network failure management, and the like. In the case where data is read from the server and edited using a computer program such as a word processor, the edited contents are saved on the file server side, and if a network failure occurs during the saving operation, On the client side, an abnormal state such as a hang-up, application error, or freeze often occurs. By pressing the escape key on the keyboard from such a state, even if you can escape, the computer program used for editing will be closed and the edited data will be lost Become.

In order to prevent such a situation, it is necessary for the client to frequently repeat the saving process or to periodically repeat the saving process using an automatic saving function added to a computer program such as a word processor. Was.

[0005]

However, in the above-mentioned conventional data management function, not only does the saving process need to be repeated frequently, but the edited contents from the last saving are not saved. The reality is that it is not a simple solution.

The present invention has been made in view of such circumstances, and after reading and editing data from an external device such as a file server, the edited contents are first stored in the own device, and thereafter, By overwriting and saving the original data of the external device, even if a network failure occurs during the save operation to the external device, the edited contents remain on the local device and no data loss occurs It is an object of the present invention to provide an apparatus and a recording medium on which a computer program for data management is recorded.

[0007]

According to a first aspect of the present invention, a data management device includes an external device (FS) connected to a network.
The data management device reads the data stored in the external device (FS) from the external device (FS), and stores the data edited after the reading in the external device (FS). Overwriting means (12)
And means (12) for overwriting the data on the side stored in the external device (FS) with the edited content after the overwriting.

A data management device according to a second aspect of the present invention is the data management device according to the first aspect, wherein the data management device communicates with the external device (FS) when overwriting data on the side stored in the external device (FS). Means (13) for monitoring the status; means (14) for reading out and overwriting the data which has been overwritten when the communication status is normal; Means (15) for storing information indicating the overwriting on the external device (FS) in association with the data on which the overwriting was attempted, and performing the overwriting on the basis of the information indicating the abnormality associated with the data. Means (11) for determining whether or not to read data.

[0009] The recording medium according to the third aspect of the present invention is a computer-readable storage medium which is connected to a computer from an external device (FS) connected to a network.
Reading data stored in the external device (FS),
The data edited after being read is transferred to the external device (F
In a computer-readable recording medium on which a program to be stored in S) is recorded, a program code means (12) for causing the computer to overwrite the edited content on the read-out data; After the overwriting, a program including program code means (12) for overwriting the edited content with the data stored in the external device (FS) is recorded.

The recording medium according to a fourth aspect of the present invention is the recording medium according to the third aspect of the present invention, wherein the external device (F
When the data stored in S) is overwritten, the program code means (13) for monitoring the communication status with the external device (FS) is provided to the computer, and when the communication status is normal, Program code means (14) for reading and deleting the overwritten data, and, when the communication state is abnormal, information indicating the abnormality corresponding to the data which the external device (FS) tried to overwrite. Program code means (15) for attaching and storing, and program code means (11) for causing a computer to determine whether or not to read the overwritten data based on the information indicating the abnormality associated with the data. And further comprising:

According to the present invention, there is provided a data management device for reading data stored therein from an external device such as a file server connected to a network, and storing edited data after the reading in the external device. After the user reads and edits the data using a computer program such as a word processor, the edited contents are overwritten and saved in the own device, and then the edited data is overwritten on the original data of the external device. Since the data is stored, for example, data that is normally developed and temporarily stored in a volatile memory such as a RAM at the time of reading is stored in a non-volatile memory such as a hard disk device to be duplicated. By overwriting and saving the data in the non-volatile memory, the edited contents are secured. Then, after that, the edited content is overwritten and saved on the original data on the external device side, so even if a network failure occurs at the time of this overwriting and the computer program such as the word processor of the own device is closed, Since the edited contents are secured in the nonvolatile memory, no data is lost. Note that such an overwrite saving function can be used as a so-called automatic saving function provided in a computer program such as a word processor.

In addition, when overwriting the edited contents on the external device, it is monitored whether a failure has occurred in the network. If no failure occurs, the edited contents are also stored on the external device side. Since the configuration is such that the data left on the own device side is deleted, unnecessary data is not multiplexed, and a large-capacity storage device is not required on the own device side. When such a deletion function is used as the above-described automatic storage function, frequent execution of this deletion function reduces the speed of other processing of the own device. For example, a computer program such as a word processor is closed. It is desirable to be configured to execute it.

Further, conversely, if a failure occurs in the network when the edited contents are overwritten on the external device, the information indicating the abnormality is added to the original data that attempted to overwrite the external device. It is stored in the own device in association with it, and based on the information indicating this abnormality, it is configured to determine whether to read the original data for which overwriting was attempted. Since the content does not remain on the external device side, for example, when the user tries to read old (unedited) data on the external device side after the network is restored, refer to the information indicating the abnormality. It is possible to prevent old data from being read carelessly. Whether reading is possible can be determined based on the presence or absence of information indicating an abnormality. More specifically, for example, referring to the last storage date and time and the reading date and time of the previous reading, and remaining in the own device. It can also be determined by knowing whether the data being read is newer or older than the data on the external device side.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. FIG. 1 is a block diagram showing a configuration of a data management device according to the present invention and a connection between the data management device and a file server.

The data management device according to the present invention uses a general-purpose personal computer connectable to a LAN, and includes a CPU 1, a LAN interface 2, a display 3, a keyboard 4, a mouse 5, a RAM 6, a hard disk device 7, and the like. Is provided.

The LAN interface 2 has an L (not shown)
It is connected to one node of the AN and enables communication with a file server FS connected to this LAN.

The display 3 is a CRT display,
It is composed of an LCD, a TFT, a plasma display and the like, and displays an operation state of the CPU 1, a communication state with the file server FS via the LAN, and the like. When a display device of a touch panel type is used as the display 3, a keyboard 4 and a mouse 5, which will be described later, can be omitted.

The keyboard 4 is used for inputting an instruction to read a file stored in the file server FS, performing input operations such as editing the read file, and the like.
The mouse 5 is used to move a pointer displayed on the display 3 and perform various designation operations and the like, similarly to the keyboard 4.

The RAM 6 stores temporary files and the like generated during the operation of the CPU 1. The hard disk device 7
A computer program for executing each process, an operating system (OS) for managing the execution of these computer programs are installed in advance, and a copy file which is a feature of the present invention described later is stored.

The CPU 1 includes a file reading unit 11, an overwriting storage unit 12, a communication state monitoring unit 13, a copy deletion unit 14, a log storage unit 15, and the like.

When the user tries to open a file to be edited by using the keyboard 4 or the mouse 5, the file reading means 11 receives the reading instruction and sends the received instruction file from the hard disk device 7 or the file server FS. read out. When the read file is a file read from the file server FS, the file reading unit 11 copies the copy to the hard disk device 7.
And allows the editing program such as a word processor to edit the created duplicate file.

The overwriting means 12 overwrites the file edited by the user using the editing program, if the file has been read from the hard disk device 7, and overwrites the file on the hard disk device 7. If the file is read from the file server FS, a copy file of the hard disk device 7
Each of the original files of the file server FS is overwritten and saved.

The communication status monitoring means 13 monitors the status of communication with the file server FS via the LAN interface 2 when a save operation to the file server FS occurs and at a predetermined time period.

The copy deletion means 14 is a file server FS
If the communication status monitored by the communication status monitoring means 13 is normal when the storage process is performed on the side, the copy file stored in the hard disk device 7 is deleted.

The log storage unit 15, contrary to the copy deletion unit 14, performs a storage process on the file server FS side when the communication status monitored by the communication status monitoring unit 13 is abnormal. The information indicating the abnormality is stored in the hard disk device 7 as an error log in association with the original file of the file server FS on which the saving process is attempted.

The data management device according to the present invention has the hardware configuration as described above, and the file server FS
When a file is read from the side, a duplicate file is always created on the hard disk device 7 and the duplicate file is opened for editing. After reading, the file is edited in a stand-alone manner without depending on the LAN failure.・
It is possible to perform a save operation.

When saving a file, the file on the hard disk device 7 is overwritten first, and then overwritten on the original file of the file server FS.
Only when the overwriting to the file server FS is completed normally, the duplicated file on the hard disk device 7 is deleted.
Edited content is not lost.

Further, as described above, when there is a failure in the LAN at the time of overwriting and the original file on the file server FS side is not updated to the edited contents,
An error log indicating this is created so that the user does not inadvertently open the file before updating on the file server FS side. The above processing will be described below.

FIG. 2 shows the CPU 1 when the data management device according to the present invention reads a file from the file server FS.
6 is a flowchart showing the processing procedure of FIG. First, for example, in a state where the editing program is running, the user instructs using the keyboard 4 or the mouse 5 to read a file stored in the file server FS. Is received (step 11), and it is confirmed whether or not an error log corresponding to the specified file is stored in the hard disk device 7 (step 12). File reading means 11
Performs an abnormal process described later when an error log is stored (step 13).

If no error log is stored in step 12 or after step 13, the file reading means 11 reads the designated file (step 1).
4) Check whether the read file is stored in the file server FS, that is, whether the file is remote (step 15). In the case of remote control, the overwriting means 12 stores the hard disk
In other words, a local copy of the read file is created (step 16), and the file reading means 11 expands the created duplicate file in the RAM 6 and opens it (step 17). When the duplicate file is opened, the above-described editing program is notified of editing permission, and the editing program is placed in a state where editing is possible by placing a cursor at a predetermined position on the display 3.

In step 17, step 1
If the file read out in step 5 is not remote, that is, local, the file reading means 11 directly expands and opens the file in the RAM 6 without creating a copy by the overwriting storage means 12, so that the file can be edited. I do.

Even when a file on the remote side is opened as in the case of step 16, the file actually located on the local side is opened. Leave it on the remote side. Alternatively, a configuration may be adopted in which information such as the drive and directory at the time of reading is local, and information on the original file on the remote side is separately stored.

FIG. 3 is a diagram showing the C when the data management device according to the present invention saves the edited file in the file server FS.
It is a flowchart which shows the processing procedure of PU1. After the file is ready for editing as shown in FIG. 2,
When the user edits the file using the keyboard 4 or the mouse 5 and performs an operation of instructing overwriting and saving, the overwriting and saving means 12 receives this instruction (step 21), and first overwrites the designated file locally. Save (step 22).

Subsequently, the overwriting / storing means 12 confirms whether the designated file was originally read remotely by referring to the information on the drive, directory, etc. at the time of reading (step 23). If not, that is, if the file is read directly from the local, this processing is terminated.

On the other hand, if the specified file is read remotely, the overwriting storage means 12
This is overwritten and saved on the remote side (step 24), and at this time, the communication status monitoring means 13 confirms whether or not the overwriting and saving on the remote has been completed normally (step 2).
5).

If the storage has been completed normally, the copy deletion means 14 deletes the copy file created on the local side (step 26), and terminates this processing. on the other hand,
If the saving is not completed normally, the log saving means 1
5 generates an error log including the information to that effect and the information on this file (step 27), and terminates this processing.

In the abnormal processing (step 13) in FIG. 2 described above, for example, when a failure occurs in the LAN during overwriting and saving to the remote side and at least the editing program is closed. And if the user reopens the editing program and tries to read the remote file, the remote file may be older than the duplicate file stored locally. High in nature. Reading and editing such an old file prevents the loss of the meaning of storing the duplicate file, so the user must be careful when reading the file depending on whether there is an error log as described above. Can be encouraged,
It is also possible to lock a file so that it is not opened.

However, such a determination is made when the file on the remote side is read out,
It is conceivable that attribute information such as read date and time is stored, and this attribute information is compared with similar attribute information of a duplicate file. Therefore, a configuration using a method such as comparing the contents of files may be adopted.

The computer program for data management as described above can be provided by being preinstalled on a computer, or can be provided on a portable recording medium such as a CD-ROM or MO. Further, it can be provided via a communication line.

It should be noted that, although the claims are provided with reference numerals for convenience of comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings.

[0041]

As described above in detail, in the data management device and the recording medium in which the data management computer program is recorded, an external device such as a file server connected to a network is used to execute the data management. In the data management device that reads the stored data and stores the edited data in the external device after the reading,
After the user reads and edits the data using a computer program such as a word processor, the edited contents are overwritten and saved on the local device side, and then the edited contents are overwritten on the original data on the external device side. Therefore, for example, data that is normally developed and temporarily stored in a volatile memory such as a RAM at the time of reading is stored in a non-volatile memory such as a hard disk device to be duplicated, and the edited content is first stored in the non-volatile memory. By overwriting and saving the data in the memory, the edited contents are secured. Then, after that, the edited content is overwritten and saved on the original data on the external device side, so even if a network failure occurs at the time of this overwriting and the computer program such as the word processor of the own device is closed, Since the edited contents are secured in the nonvolatile memory, no data is lost.

When the edited contents are overwritten on the external device, it is monitored whether a failure has occurred in the network. If no failure occurs, the edited contents are also stored on the external device side. Since the configuration is such that the data left on the own device side is deleted, unnecessary data is not multiplexed, and a large-capacity storage device is not required on the own device side.

Further, contrary to the above, when a failure occurs in the network when the edited contents are overwritten on the external device, the information indicating the abnormality is replaced with the original data which attempted to overwrite the external device. It is stored in the own device in association with it, and based on the information indicating this abnormality, it is configured to determine whether to read the original data for which overwriting was attempted. Since the content does not remain on the external device side, for example, when the user tries to read old (unedited) data on the external device side after the network is restored, refer to the information indicating the abnormality. It is possible to prevent old data from being read carelessly. Whether reading is possible can be determined based on the presence or absence of information indicating an abnormality. More specifically, for example, referring to the last storage date and time and the reading date and time of the previous reading, and remaining in the own device. The present invention has an excellent effect, for example, it can be determined by knowing whether the stored data is newer or older than the data on the external device side.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a data management device according to the present invention and a connection between the data management device and a file server.

FIG. 2 is a flowchart showing a processing procedure of a CPU when a data management device according to the present invention reads a file from a file server.

FIG. 3 is a flowchart showing a processing procedure of a CPU when the data management device according to the present invention saves an edited file in a file server.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 11 File reading means 12 Overwriting storage means 13 Communication status monitoring means 14 Duplication deletion means 15 Log storage means FS file server

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5B082 DA02 DC12 DC13 5B085 AC03 AC16 BG07 CC01 5B089 GA11 GA21 GB02 GB03 HA06 JA01 KA12 KB04 LB04 LB14 LB25 ME09

Claims (4)

[Claims] An external device (F) connected to a network
S), the data management device reads the data stored in the external device (FS) and stores the data edited after the reading in the external device (FS). Means (12) for overwriting the content; means (1) for overwriting the data after editing on the data stored in the external device (FS) after the overwriting.
2) A data management device comprising: A means for monitoring a communication state with the external device when overwriting data on the side stored in the external device, wherein the communication status is normal. Means (14) for reading out and overwriting the data on the side overwritten, and, when the communication state is abnormal, the information indicating the abnormality is overwritten on the external device (FS). Means for storing the data indicating the abnormality associated with the data; and means for determining whether or not to read the overwritten data based on the information indicating the abnormality associated with the data. Item 2. The data management device according to Item 1. 3. A computer reads out data stored in an external device (FS) from an external device (FS) connected to a network, and outputs the data edited after the reading to the external device. A computer-readable recording medium storing a program to be stored in (FS), a program code means (12) for causing the computer to overwrite the data on the read side with the edited content; After the overwriting, the external device (F
A recording medium characterized by recording a program including program code means (12) for overwriting the edited data on the data stored in S). 4. An external device (FS) in a computer.
A program code means (13) for monitoring a communication state with the external device (FS) when overwriting data on the side stored in the computer;
Program code means (14) for reading and deleting the overwritten data; and
Program code means (15) for storing the information indicating the abnormality in association with the data to which overwriting has been attempted in the external device (FS), and instructing a computer based on the information indicating the abnormality associated with the data. Program code means (1) for determining whether or not to read the data for which overwriting has been attempted.
4. The recording medium according to claim 3, further comprising 1).