JPH11296390A - System for switching plural communication means by remote program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of remote programs and communication processing conversion programs, and to prevent a communicating means from being designated by the remote program without starting a gateway program or remote program for each of different kinds of communicating means at the time of processing communication data from a remote procedure calling to the remote program in a system constituted of the remote procedure and the remote program having the different kinds of communicating means. SOLUTION: In this switching system, generalized communication data 600 to which a communicating means identifier is applied by a client stub from a remote procedure calling 100 having the different kinds of communicating means are transmitted to a remote program 500. The communicating means is identified from a communicating means judging sub-program 511 in a server stub 510 and the communication data 600, and an optimal communication progressing sub-program 512 is selected. Thus, the communication data can be processed by the same kind of remote program requested from the plural communicating means, the number of gateway programs or remote programs can be reduced, and the communicating means can be prevented from being designated by the remote program by the server stub.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system comprising a remote procedure call having a plurality of communication means. When a plurality of communication means calls one remote program, a client and a server stub determine a communication type. The present invention relates to an RPC for receiving a plurality of communication means without specifying a communication means in a remote program and calling a request subprogram.

[0002]

2. Description of the Related Art In the prior art, a system constituted by a program having a plurality of communication means. When a plurality of communication means are received by a remote program, a plurality of communication processing conversion programs and a remote program are prepared. Was possible.

[0003] Such existing technologies include M.I. T.
The application gateway method in "THE OPEN B00K" by Rose is known.

As a method of calling a communication interface of a remote program from a remote procedure call, a communication method is specified on the remote program side to identify a plurality of communication means. "Underst" by Rosenberg
ID of DCE RPC in "anding DCE"
There is L.

[0005]

In the prior art of the application gateway method, when a remote procedure call for performing the same processing by different communication means is performed, a gateway program is created for each different communication means,
If a remote program corresponding to this is required and the number of remote programs for processing different tasks increases, the gateway program and the remote program are required for each different communication means, causing a problem that the memory of the computer runs short. I was Further, since a gateway process is required, the performance may be deteriorated. DCE R
In the PC, the communication means must be specified by the remote program, and the communication means becomes visible to the user, and the communication means cannot be completely hidden from the remote program or the remote procedure call.

An object of the present invention is to generate a client stub having different communication means, a server stub for performing communication processing with a communication means determination subprogram, and a communication means determining subprogram, when different communication means are present,
By generating a stub that does not specify the communication means from the user on the program and connecting it to the remote program,
An object of the present invention is to provide a method in which an increase in the number of processes is reduced to prevent performance degradation, and a plurality of communication means are not specified from a remote program.

[0007]

A client stub having means for converting a definition file describing a plurality of different communication processes into generalized communication data to which a communication means identifier is assigned in each requesting communication process; A communication means determination subprogram for determining communication means from the structured communication data and the assigned communication processing identifier, and a server stub including the respective communication processing subprograms as means, are combined with the remote procedure call program and the remote program, respectively. By doing so, the increase in the number of processes can be reduced, and a remote program can be generated without specifying a communication means in the remote program.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration example of the present invention. The remote procedure call 100, 200 uses different communication means 111, 211 respectively for the client stub 10
1, 202, and calls a remote program 500 that performs the same processing. The program 400 for generating the client stub 110 and the server stub 510 from the definition file 300 describing the communication means includes a communication means determination subprogram 511 and each communication processing subprogram 51
A remote request processing subprogram consisting of 2, 513 is generated as a server stub 510, and a remote program 500 combined with the request processing subprogram 520 is configured.

The communication data transmitted by the remote procedure call 100 is 600 and 700, respectively. When the remote procedure call 100 transmits the communication data 600 to the remote program 500 via the client stub 110, the generalized communication data 600 is given a communication type identifier 601 and the remote program 500 receives the data. I do. On the other hand, the remote program 500 is a server stub 5
The communication means is identified from the communication data 600 and the communication means identifier 601 by the communication means determination subprogram 511 in 10 and the request processing subprogram 520 is called via the appropriate communication processing subprogram 512.

According to this embodiment, it is not necessary to create a remote program or a gateway program for each different communication means, the number of processes can be reduced, and a remote program can be generated without specifying a communication means in the remote program. it can.

[0011]

As described above, according to the present invention,
In a system configured with different communication means, the number of gateway programs and remote programs can be reduced, a computer memory shortage can be avoided, and a remote program can be created without specifying a communication means in the remote program.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example in a switching method of a plurality of communication means according to the present invention.

[Explanation of symbols]

 Reference Signs List 100 remote procedure call 110 client stub A 111 communication means A subprogram 200 remote procedure call 210 client stub B 211 communication means B subprogram 300 file defining communication means 400 client server stub generation program 500 remote program 510 remote request processing Subprogram 511 Communication means determination subprogram 512 Communication processing subprogram A 513 Communication processing subprogram B 520 Request processing 600 Communication data A by communication means A 601 Communication means identifier A 700 Communication data B by communication means B 701 Communication means identifier B

Claims (1)

[Claims] 1. A system comprising a remote procedure call (RPC) having a plurality of different communication means and a remote program which is called by different communication means from each remote procedure call and operates a request process. A client stub that is a communication process that generalizes performing different communication means for each remote procedure call from a definition file describing a communication means, and a unit that determines the generalized communication process as a different communication process, It has means for generating a server staple which is a remote request processing subprogram including a communication processing subprogram which is a means for processing each communication, and a remote procedure call using a certain communication means is performed by a remote procedure call client stub. ,
According to the communication means, generalized communication data including a communication means identifier is generated and transmitted to the remote program, and the remote program does not need to describe the communication means in the remote program, and the different communication in the server stub is performed. A remote program for selecting an appropriate communication process from the communication data and performing a request process by judging the means, wherein a plurality of communication devices can be switched and received in a server stub by one remote program; Switching method of multiple communication means.