JPH0314064A - Code conversion processing system - Google Patents

Abstract

PURPOSE:To simplify the program constitution to improve the productivity of programs by not providing each application program with a code conversion processing logic but calling a package conversion function by the application program to communicate data with another system different in code system. CONSTITUTION:At the time of data communication between respective application programs 6 and 7 of systems 2 and 3 different in code system from each other, the application program 6 calls a package conversion function 4 to request the code conversion of a package 10, and the package conversion function 4 refers to package definition information 8 to perform code conversion and returns the control to the application program 6. Thereafter, the package 10 is transmitted to a network 1 and is received by a system 3 and is processed by the application program 7. Thus, the program is simplified because it is unnecessary to execute the complicated code conversion processing.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a code conversion processing method for transmission data in a network system to which various types of systems having different code formats of data to be processed are connected.

The purpose is to eliminate the need to incorporate code conversion processing logic into application programs that exchange data with other systems with different code systems within a network.

In the data code conversion processing method when data is transmitted in package format between different systems connected to a network, each system is equipped with a package conversion function that performs data code conversion processing for each package, and each system's application The program is configured to call the package conversion function to perform code conversion processing for data in the package format when transmitting data in a package format between systems of different types.

[Industrial application field]

The present invention relates to a code conversion processing method for transmission data in a network system to which various types of systems having different code formats of data to be processed are connected.

[Conventional technology]

There are various systems that currently exist in the world, such as general-purpose large computer systems, workstations, and personal computers, and the code systems used in these systems are, for example, EBCIDIC.
There are various types such as /JEF code system, ASCII/shift JIS code system, etc.

On the other hand, as computer networking has progressed in recent years, it has become necessary to connect various systems to networks and exchange data between the systems. However, in such a situation, it must be assumed that each system in the network has a different basic code system.

Therefore, in each system connected to the network,
To be able to process data received from other systems,
It is necessary to have a code conversion function.

By the way, conventional code conversion functions include those that convert one character at a time, and those that convert strings of a certain number of characters (n characters).These functions are provided to the user by the system, and It is common to use a code conversion function as a module to incorporate processing logic for code conversion of data into an application program.

[Problem to be solved by the invention]

In conventional network systems, if you want to process data by exchanging data with other systems with different code systems, it is necessary to incorporate processing logic using a code conversion function that matches the code system into the application program. There is a problem in that the productivity of the application program is significantly reduced because complicated processing is forced to be performed for purposes other than the original processing purpose.

An object of the present invention is to eliminate the need to incorporate code conversion processing logic into an application program that exchanges data with other systems with different code systems within a network.

[Means to solve the problem]

The present invention provides a system connected to a network,
A package conversion function is provided to perform code conversion processing on a package-by-package basis1, and the application program within the system does not have its own code conversion processing logic1.Instead, when performing data package transmission (sending or receiving), the application program in the system uses the system's The package conversion function is called to request code conversion processing for one package data.

The package referred to here is a unit of data transmission between application programs of different systems, and generally contains multiple character strings of character data or binary data, and the data type of each string is determined by the data transmission. It is defined as a promise between each application program to be executed.

The basic structure of the present invention will be explained with reference to FIG.

In FIG.

l is a network.

2 and 3 are systems with different code systems connected to network 1.

4 and 5 are package conversion functions provided in the system 2.3, respectively, which perform code conversion of data on a package-by-package basis.

Reference numerals 6 and 7 are application-type programs in the systems 2 and 3, respectively, which include processing for transmitting data in a package format, by calling the package conversion function of the own system.

Request code conversion processing for a package.

8 and 9 are application programs 6, respectively.
．． This is package definition information that defines the format and data type of the package provided in 7, and specifies whether the character string of the package is character data or binary data.

IO is a package transmitted between application programs 6.7 of system 2.3.

[For production]

In Fig. 1, each application program of the system 2.3 has a different code system.6.7 When exchanging the same data. Data code conversion is performed on either the sending side (writing side) system or the receiving side (reading side) system.

For example, if the sending system performs code conversion, the application program 6 of system 2 is packaged 10 to the application program of system 3.
, the application program 6 calls the package conversion function 4. Request code conversion for package 10.

Package conversion function 4 is. Refer to package definition information 8. Code conversion is performed according to the data type of the package IO, and control is returned to the application program 6. After that, the application program 6 executes the transmission of the package 10. The package 10 is thereby transmitted to the network 1, received by the system 3, and processed by the application program 7. A similar operation is performed when performing package transmission from system 3 to system 2.

The application program 6 only needs to call the package conversion function 4 once for each package to be transmitted, and there is no need to refer to the package definition information 8 and perform complicated code conversion processing by yourself as in the past. It gets easier.

〔Example〕

The present invention will be explained in detail with reference to FIGS. 2 to 4.

FIG. 2 is an explanatory diagram of the compile phase of an application program according to one embodiment of the present invention.

In FIG. 2, 11 is an application program APL in source format. 12 is an application program ApL in object format as a result of compilation processing.
'. Further, 13 is a declaration DECL written in APLII, which defines the package format, data type, etc.

14 is the declaration extraction a function P2 of the compiler's 1a function,
Extract the declaration DECL from APLII and generate 15 package definition information items. The package definition information has information that specifies whether each of multiple character strings in the package data is of character type or binary type.

FIG. 3 is an explanatory diagram of the execution phase of the application program according to the embodiment of the present invention.

In FIG. 3, 12 and 15 are the object-format application program APU and package definition information generated in the compilation phase of FIG. 2, respectively. Includes processing to read data from other systems.

Further, 16 is a package conversion function P1, and 17 is data DATA before code conversion of a package received from another system.

And 18 is data DATA' code-converted by the package conversion function P1.

APL'12 is. In the process of reading data from other systems, call the package conversion function P1 (Ca1l)
I do. The package conversion function P1 is. Referring to the package definition information of APL', data DATA 1 to 7 is converted into data DATA'18 and returned to APL'.

FIG. 4 is a processing flow diagram of the package conversion function P1 according to the embodiment of the present invention shown in FIG.

In Figure 4. First, the package conversion function P1 refers to the package definition information shown in Figure 3. Note that the package definition information includes information indicating whether the data type of a plurality of character strings (assumed to be N) in the package DATA is a character type or a binary type.

Therefore, in order to read the data type of the first character string of DATA from the package definition information, set n-1 to the counter and determine whether the first data type read from D is a character type or a binary type. do. If it is a binary type, the counter is set to n= without code conversion for that string.
If the character string is of character type, a predetermined code conversion is performed on the character string, and it is output as a character string to the DAT, and the counter is set to n=n+1.

Execute the above processing for sequential character strings of DATA;
The process ends when n>N.

In the above embodiments, the data types were classified into character types and binary types, but for boat fishing, it is sufficient to classify them according to those that require code conversion and those that do not, and when there are multiple code systems. It is only necessary to further classify them according to their types.

〔Effect of the invention〕

According to the present invention, each application program does not need to have its own code conversion processing logic for exchanging data with other systems with different code systems, and the package conversion function can be called at the same time as package transmission. This simplifies the program configuration and significantly improves program productivity.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the basic configuration of the present invention, FIG. 2 is an explanatory diagram of the compilation phase of an application program according to an embodiment of the present invention, FIG. 3 is an explanatory diagram of the execution phase of an application program according to an embodiment of the present invention, and FIG. FIG. 4 is a processing flow diagram of the package conversion function according to the embodiment of the present invention. 1 in Figure 1: Network 2.3 = System with different code system 4.5 Nipackage change (Mulberry function 6.7 = Application program 8.9: Package definition information 10: Package

Claims (1)

[Claims] Heterogeneous systems connected to a network (2, 3
) in the data code conversion processing method when transmitting data in package format, each system (2, 3)
is equipped with a package conversion function (4, 5) that performs data code conversion processing on a package-by-package basis, and the application programs (6, 7) of each system transmit data in package format with other heterogeneous systems. When processing, use the above package conversion function (
4 and 5) to perform code conversion processing for data in the package format.