JPH05150941A - System for sharing data - Google Patents

Abstract

PURPOSE:To realize the data sharing between programs with different data system. CONSTITUTION:A data sharing management part 13 stores the data system required the writting from programs 11 and 12 after converted into the prescribed data system from the data system intrinsic for the programs 11 and 12 in a storage device 2. A reading of the stored data is requested from the other programs 12 and 11, a data sharing management part 13 informs the data system stored in the storage device 12 converted into the data system intrinsic for the programs 12 and 11. The manual aid is unnecessitated as the data system conversion is performed automatically, the input/output data of programs are managed in a batch as sharing data to be commonly used in the programs, resulting in simplifying the sharing data management.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a data sharing system,
Particularly, the present invention relates to a data sharing method between a plurality of programs having different data formats to be handled.

[0002]

2. Description of the Related Art Some programs executed by a computer have the same data format as the data formats of other programs, but many programs handle different data formats. In a plurality of programs having different data formats handled in this way, the data created by one program cannot be directly used by the other program.

Therefore, conventionally, as shown in FIG. 5, for example, a program 51 for a word processor and a program 5 for a spreadsheet, which has a different data format, are used.
2 and the program 51 created by the program 51
When the data 53 having the unique data format is used in the program 52, the user himself / herself activates the converter 55 to convert the data format of the data 53 into the data format unique to the program 52 to create the data 54. Data 5
4 is used by the program 52.

[0004]

Conventionally, it is possible to share data between programs having different data formats as described above, but there are the following problems.

The user himself / herself must activate the converter in order to convert the data format used by another program into the data format unique to that program.

When the converted data that has been updated is used again in the original program, the user must start the converter again in order to reverse the data format. If this re-conversion is forgotten, the data before the update etc. will be used, resulting in a contradiction.

Since data shared by a plurality of programs is independently created like the data 53 and 54,
Management becomes troublesome.

The present invention has solved such a conventional problem, and an object thereof is to enable sharing of data between a plurality of programs having different data formats to be handled without user intervention and to manage the data. To make it easier.

[0009]

In order to achieve the above object, the present invention provides a data sharing system in a computer having a processing device for executing a plurality of programs having different data formats and a storage device for storing data. The data sharing management unit has a data format conversion function and manages input / output data of the plurality of programs as shared data that can be commonly used by the plurality of programs, and the data sharing management unit requests writing. If necessary, the format of the write data of the program is converted from the data format specific to the program to a predetermined data format and stored in the storage device, and the program for which reading is requested is stored in the storage device. It is configured to convert the relevant data format to the program-specific data format as necessary and notify. There.

[0010]

In the data sharing system of the present invention, when a certain program A requests the writing of the data a created in its own data format, the data sharing management unit changes the format of the write data a as necessary. The data format unique to the program is converted into a predetermined data format and stored in the storage device.

Specifically, for example, the following operation is performed.

When a data format different from any of the data formats of a plurality of programs executed by the processing device (hereinafter referred to as an intermediate format) is adopted as the predetermined data format, the data sharing management unit writes the data related to writing. The format of a is converted into an intermediate format and stored in the storage device.

When the data format of a predetermined specific program (hereinafter referred to as a specific program) of the plurality of programs (hereinafter referred to as a specific format) is adopted as the predetermined data format, the data sharing management unit , Program A that requested writing
If is a specific program, the write data a is stored in the storage device as it is, and if it is a program other than the specific program, the format of the write data a is converted into a specific format and stored in the storage device.

When each data format of the plurality of programs is adopted as the predetermined data format, the data sharing management unit converts the format of the write data a into a data format of a program other than the program A which has requested to write, The original write data a and the write data after the data format conversion are stored in the storage device corresponding to each program.

After that, the program B having a different data format
However, when the data A written by the program A wants to use the data a and wants to read it, the data sharing management unit changes the format of the corresponding data stored in the storage device to a data format unique to the program as necessary. Convert and notify.

Specifically, for example, the following operation is performed.

When the intermediate format is adopted as the predetermined data format, the data sharing management unit reads the data a stored in the storage device and converts the format from the intermediate format to the data format unique to the program B. Notice.

When a specific format is adopted as the predetermined data format, the data sharing management unit is the program B that has requested reading.
Is a specific program, the data a stored in the storage device is read and notified in the same format. If the program is a program other than the specific program, the data a stored in the storage device is read and the format is specified. The format is converted into the data format specific to the program B, and the notification is made.

When each data format of the plurality of programs is adopted as the predetermined data format, the data sharing management unit converts into a data format unique to the program B stored in the storage device corresponding to the program B. The read data a is read and notified.

[0020]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration example of a computer to which a data sharing system according to an embodiment of the present invention is applied.
Is a processing unit including a central processing unit and a main storage unit,
Reference numeral 2 is a storage device such as a magnetic disk device.

A program 11 and a program 12 are executed on the processing device 1.

The program 11 is, for example, a program for a word processor, and the data created by this program 11 has a data format unique to the program 11. The format of the input data given to the program 11 needs to be a data format unique to the program 11.

The program 12 is, for example, a spreadsheet program, and the data created by the program 12 has a data format specific to the program 12. Also,
The format of the input data given to the program 12 needs to have a data format unique to the program 12.

The processing device 1 stores the data requested to be written by the programs 11 and 12 in the file 2 on the storage device 2.
1 and read requested data from the file 21 and notify the programs 11 and 12 by using the data sharing management unit 13 at that time.

The data sharing management unit 13 has a data format conversion function, and has a plurality of programs 11 and 12.
Is a means for managing the input / output data as shared data that can be commonly used by those programs.

In this embodiment, the following three management modes are used.
Any one of the streets is used. Input / output data of the programs 11 and 12 is managed in an intermediate format different from the data format of the programs 11 and 12. The input / output data of the programs 11 and 12 is managed in the data format of either one of the programs. The input / output data of the programs 11 and 12 are managed in the data format of both the programs 11 and 12.

FIG. 2 is a flow chart showing an example of processing of the data sharing management unit 13, and FIGS.
FIG. 6 is an explanatory diagram of shared data stored in FIG. 3, and the operation of this embodiment will be described below for each management mode described above. In the present embodiment, the data created by the program 11 can be used by the program 12 as well as the program 1
The data created by 2 can be used by the program 11,
Since the operation becomes the same only when the master and slave are reversed, the data created by the program 11 will be changed to the program 12 in the following.
Take the case of using as an example.

(1) Management mode When the program 11 creates the data a in a data format unique to the program 11 and issues a write request for the data a, the data sharing management unit 13 writes the input / output type. From step S1 to step S2, the format of the data a is converted into an intermediate format. Then, the converted data a is stored in the file 21 of the storage device 2 (S3). When updating the data, the old data a on the file 21 is overwritten with the new data a.

Similarly, when a write request for the data b, c, ... Is issued from the program 11, the data b, c, ... Converted to the intermediate format is written in the file 21.

As a result, as shown in FIG.
1 stores intermediate format data a, intermediate format data b, intermediate format data c, ....

After that, the program 12 makes the data a
2, the data sharing management unit 13 proceeds to step S4 from step S1 of FIG. 2 because the input / output type is read, and reads the corresponding data, that is, the intermediate format data a from the file 21 of the storage device 2. Then, the format of the read data is converted into a data format unique to the program 12 (S5), and the converted data format is stored in the program 12
(S6).

Similarly, when a read request for the data b, c, ... Is issued from the program 12, the program 12 is notified of the data b, c ,.

(2) Management form When the program 11 creates the data a in a data format unique to the program 11 and issues a write request for the data a, the data sharing management unit 13 writes the input / output type. From step S1 to step S2.

In the management mode, the format of the write data is converted to a specific format, that is, one of the predetermined data formats of the programs 11 and 12 in step S2. Therefore, assuming that the specific format is the data format of the program 11, since the data a is already in the specific format, substantial conversion is not performed, and the data a is written in the file 21 in the next step S3. On the contrary, when the specific format is the data format of the program 12, the format of the data a is converted into the data format unique to the program 12, and the converted data a is written in the file 21. In addition,
When updating the data, the old data a on the file 21 is overwritten with the new data a.

Similarly, when the program 11 issues a write request for the data b, c, ..., The data b, c ,.

As a result, in the management form, the intermediate format data a, intermediate format data b, intermediate format data c, ... Of FIG. 3 are the specific format data a, the specific format data b,
The data has a specific format c, ....

After that, the program 12 causes the data a
When the read request is issued, the data sharing management unit 13 proceeds to step S4 from step S1 in FIG. 2 because the input / output type is read, and reads the corresponding data from the file 21 of the storage device 2, that is, data a of a specific format. Go to step S5.

In the management mode, the format of the data read in step S5 is converted into the data format of the request source program 12. Therefore, assuming that the specific format is the data format of the program 12, the data a is already in the specific format, so that substantial conversion is not performed and the data a is notified to the program 12 in the next step S6. On the other hand, if the specific format is the data format of the program 11,
The format of the data a is converted into a data format unique to the program 12, and the converted data a is notified to the program 12.

Similarly, when a read request for the data b, c, ... Is issued from the program 12, the program 12 is notified of the data b, c ,.

(3) Management form When the program 11 creates the data a in the data format unique to the program 11 and issues a write request for the data a, the data sharing management unit 13 writes the input / output type. From step S1 to step S2.

In the management mode, conversion for obtaining the write data a in the data format of all the programs 11 and 12 is performed in this step S2. Therefore, the data a
Since the format is a data format unique to the program 11, it is converted to a data format unique to the program 12.

Then, in the next step S3, the data a having the data format unique to the program 11 and the data a having the data format unique to the program 12 are stored in the file 2
Store in 1. When updating the data, each old data a on the file is overwritten with each new data a.

Similarly, when the program 11 issues a write request for the data b, c, ...
The data b, c, ... Having a unique data format and the data b, c ... Having a unique data format for the program 12 are written in the file 21.

In this result management mode, as shown in FIG. 4, in the file 21, regarding the same data a, b, c, ..., Data a, b, c ,. , Data a, b, c, ... Having a data format unique to the program 12 are stored.

After that, the program 12 makes the data a
When the read request is issued, the data sharing management unit 13 proceeds from step S1 to step S4 in FIG. The data a having the format is read.

Then, in the management form, the next step S5
Is passed and the process proceeds to step S6, and the program 12 is notified of the read data a having the data format unique to the program 12.

Similarly, when a read request for the data b, c, ... Is issued from the program 12, the program 12 is notified of the data b, c ,.

[0049]

According to the data sharing system of the present invention described above, the following effects can be obtained.

Since the data sharing format is automatically converted by the data sharing management unit, it is necessary for the user to intervene and convert the data format by the converter when sharing the data between a plurality of programs having different data formats to be handled. Absent.

Since all the data created by each program can be used by another program in its own data format, the data created by a certain program is updated by another program, and the updated data is updated by the certain program. It can be used easily.

Since the input / output data of a plurality of programs are collectively managed as shared data that can be commonly used by these plurality of programs, the data management becomes easy.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of a computer to which a data sharing system according to an embodiment of the present invention is applied.

FIG. 2 is a flowchart illustrating an example of processing of a data sharing management unit.

FIG. 3 is a diagram showing an example of contents of shared data stored in a file.

FIG. 4 is a diagram showing another example of contents of shared data stored in a file.

FIG. 5 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Processing device 11, 12 ... Program with different data format to be handled 13 ... Data sharing management unit 2 ... Storage device 21 ... File

Claims (3)

[Claims] 1. A data sharing method in a computer having a processing device for executing a plurality of programs having different data formats to be handled and a storage device for storing data, and having a data format conversion function, and inputting the plurality of programs. A data sharing management unit that manages the output data as shared data that can be commonly used by the plurality of programs, and the data sharing management unit determines the format of the writing data of the program requesting the writing as necessary for the program-specific data. A format is converted into a predetermined data format and stored in the storage device, and for a program that requests reading, the format of the corresponding data stored in the storage device is converted into a data format unique to the program as necessary. A data sharing method characterized by sending notifications. 2. The data sharing method according to claim 1, wherein a data format different from a data format of the plurality of programs or a data format of any one program is the predetermined data format. 3. The data sharing management unit converts a write data format of a program requesting a write into a data format of each of the plurality of programs, stores the converted data format in the storage device, and stores a program for the read request. The data sharing method according to claim 1, wherein the corresponding data in the data format of the program stored in the storage device is notified.