JPH06301526A - Program development supporting system for client/ server model - Google Patents

Abstract

PURPOSE:To dispense with being aware of description language by generating an interface definition by IDL, and generating a client stub and a server stub from this definition. CONSTITUTION:By a client/server model definition generating means 1, information required for defining an interface is designated, and a client/server model definition is generated. By an interface definition generating means 3, the interface definition by IDL is generated from the information required for defining an interface, in this client/server model definition. By an interface definition language processor 5, a client stub and a server stub are generated from this interface definition. It becomes unnecessary that a user generates the interface definition discribed by IDL. In such a way, at the time of generating the interface definition described by the interface definition language IDL, it is possible to dispense with being aware of description language of a program of a client/ server model.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a client / server model program development support system using remote procedure call RPC.

[0002]

2. Description of the Related Art In a conventional CASE (Computer Aided Software Engineering) system, application tools, which are specialized development tools, are integrated into the CASE system. As an example, JP-A-3-
No. 34018, Computer program encapsulation method and apparatus therefor.

FIG. 3 is a block diagram of a conventional computer program encapsulation method and an encapsulation system in the apparatus thereof.
The encapsulation program integrated into the E system has a runtime interface program 40 which receives input to the application tool 42 and receives output from the application tool 42. The interface program 40 can communicate with the CASE system in the same manner as a program editing tool, a construction tool, a debug tool, etc., which are standard tools of the CASE system, and communicate with the X-window system 34 via the user interface 44. Communication with the message server 36 via the message interface 46 and with the operating system via the system signal 47.

The interface program 40 can be easily generated using the interface description language IDL. According to this interface description language IDL, the user can specify the communication with the application tool and other tools to define the interface with the application tool, and the interface description language IDL is unique to the specific application tool. It can be used to develop the interface description file IDF48. The user uses the interface description language IDL to specify the function to be performed by the interface program. The interface description language IDL is a C-like language that constitutes a description file used by the interface program. Further, the interface description language IDL defines a syntax for creating a target attribute and a target event, and has a control syntax.
It has simple data formats such as "event, integer, location, object, string".

In this way, the user first creates the interface description file 48. The interface description file 48 is compiled by a specialized compiler 50 to create intermediate level code (symbol table 52, statement table 54). The interpreter 58 evaluates this and creates a target table 60, and the event handler 62 receives the input event and supplies the output to the user through the X-window system 34. Event handler 62
Communicates with other tools in the CASE system via message events sent to and from the message server 36, and system events are sent from the operating system to the event handler 62 in the form of system signals.
Communication with the application tool 42 is performed and integrated through the sub-process controller 68. The event handler 62 calls the interpreter 58 in response to a user event, a message event, a system event, or an application event, and executes the function defined in the target table 60.

[0006]

However, the conventional client / server is of a form in which the CASE system supports a distributed collaborative environment in which a large number of WSs (workstations) are interconnected on a network. In the model program development support method, a user creates an interface definition described in the interface definition language IDL, and a client stub or a server stub is generated by the user, and a client / server model program remotely executes API calls and the like. The procedure call RPC library is called to perform the remote procedure call RPC initial processing.

Therefore, it is premised that the client / server model program is written in a specific description language (referred to as "description language A"), and the client / server model program is described in a description language other than the specific description language. In the case of description in (description language B), the user creates the interface definition described in the interface definition language IDL, or
When calling a remote procedure call RPC library from a server model program, it is necessary to be aware of the difference in the language specifications of "description language A" and "description language B", and the productivity of the client / server model program decreases. There was a problem of doing.

In view of the above problems, the present invention provides a client / server when an interface definition written in the interface definition language IDL is created, or when a remote procedure call RPC library is called from a client / server model program. It is an object of the present invention to provide a client / server model program development support method that does not require consideration of the description language of the model program.

[0009]

Clients of the present invention /
The server model program development support method is created by a client / server model definition creating means for creating a client / server model definition by a user by specifying information necessary for an interface definition, and the client / server model definition creating means. A client / server model definition, and an interface definition generating means for generating an interface definition described in the interface definition language IDL from the information necessary for the interface definition of the client / server model definition; and the interface definition generating means. An interface definition language described in IDL, an interface definition language processor that generates a client stub and a server stub from the interface definition, and Interface definition language processor, and a client stub that performs output parameter data conversion and communication with the server stub using interprocess communication; and an interface definition language processor that generates input parameter data conversion and interprocess communication. It has a server stub that communicates with the client stub used.

Further, a client / server model definition creating means for creating a client / server model definition by designating information necessary for a user to perform remote procedure call RPC initial processing, and the client / server model definition. The client / server model definition created by the creating means, and the remote procedure call R of the client / server model definition.
A client / initial program generating means for generating a client initial program from the information necessary for performing the initial processing of the PC, and a remote procedure call RPC library generated by the client initial program generating means to call the remote procedure call RPC. Of the client initial program that performs initial processing and the client / server model definition,
Remote procedure call A server initial program generating means for generating a server initial program from information necessary for performing an initial process of RPC, and a remote procedure call by calling a remote procedure call RPC library generated by the server initial program generating means. It has a server initial program for initializing the RPC.

[0011]

According to the above structure, the client / server model definition creating means allows the user to specify the information necessary for the interface definition and create the client / server model definition. An interface definition language IDL is created by the interface definition creating means from the information necessary for the interface definition of the client / server model definition.
The interface definition described by is generated, and the client definition stub and the server stub are generated from the interface definition by the interface definition language processor.

Alternatively, the client / server model definition creating means creates the client / server model definition by designating the information required for initializing the remote procedure call RPC by the user. The remote procedure call R of the client / server model definition is created by the client initial program creating means.
A client initial program is generated from the information necessary for the initial processing of the PC, and the server initial program generation means generates the server initial program from the information necessary for the initial processing of the remote procedure call RPC in the client / server model definition. Therefore, the user does not need to create the interface definition described in the interface definition language IDL, and the processing can be performed without being aware of the difference in the description language specifications.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 illustrates a client / client according to an embodiment of the present invention.
It is a block diagram of the program development support system of a server model.

In FIG. 1, 1 is a client / server model definition creating means for creating a client / server model definition by designation of a user (user), and 2 is a client / server created by the client / server model definition creating means 1. A model definition, 3 is an interface definition generating means for generating an interface definition, which is described in the interface definition language IDL, and 4 is an interface definition described in the interface definition language IDL.

Reference numeral 5 is an interface definition language IDL processor for generating a client stub and server stub from the interface definition 4, and 6 is an interface definition language I.
A client stub that is generated by the DL processor 5 and performs data conversion of output parameters and communication with the server stub using inter-process communication. Reference numeral 7 is generated by the interface definition language IDL processor 5 and performs data conversion of input parameters and clients. It is a server stub that communicates with the stub 6.

Reference numeral 8 is a client initial program generating means for generating a client initial program from information necessary for performing initial processing of a remote procedure call RPC (hereinafter abbreviated as RPC) in the client / server model definition, and 9 is a client. A client initial program 10 which is generated by the initial program generating means 8 and performs RPC initial processing is a server initial program 11.
Is a server initial program generating means, 12 is a client program, and 13 is a server program.

Next, the operation will be described.

As a client / server model program development procedure, the user (user) uses the client / server model definition creating means 1 to provide information such as an API call / return for initializing interface definition or RPC. Designate and create the client / server model definition 2. Subsequently, the client / server model definition 2 is generated by using the interface definition generation means 3.
Of these, the interface definition 4 described in the interface definition language IDL (hereinafter abbreviated as IDL) is generated from the information necessary for the interface definition 4.

Next, the user uses the IDL processor 5 to generate the client stub 6 and the server stub 7 from the interface definition 4 described in IDL. Then, the user uses the client initial program generation means 8 to make the RP of the client / server model definition 2.
The client initial program 9 is generated from the information necessary for performing the C initial processing.

Next, the user uses the server initial program generation means 10 to define the client / server model definition 2
From the information necessary to perform the initial processing of RPC,
The server initial program 11 is generated. Subsequently, the user is the client program 12 and the server program 1
Create 3. The client stub 6, the client initial program 9, and the client program 12 are linked at the time of linking the client, and the server stub 7, the server initial program 11, and the server program 13 are linked.
Is linked when the server is linked.

FIG. 2 is a flow chart showing the operation procedure of the client / server model program of the present invention.

Next, with reference to FIGS. 1 and 2, an operation procedure of a client / server model program using the client / server model program development support method will be described.

First, the user activates the server (S-2).
0). When the server is started, the server initial program 11
Is called (S-21). Server initial program 1
1 calls an RPC library (not shown), performs RPC initial processing, and waits for a request from a client (S-22).

Then, the user activates the client (S-23). When the client is activated, the client program 12 is called (S-24). The client program 12 calls the client initial program 9 to perform the RPC initial processing (S-2).
5). The client initial program 9 calls the RPC library to perform RPC initial processing (S-2
6) Return control to the client program 12 (S-
27).

The client program 12 uses the RPC to make a service request.
Is called (S-28). The client stub 6 calls the server stub 7 using interprocess communication (not shown) (S-29). The server stub 7 converts the input parameter data and calls the server program 13, A, (S-30).

The server program 13 executes the service and returns the control to the server stub 7 (S-31). The server stub 7 returns control to the client stub 6 by interprocess communication B. The client stub 6 performs data conversion of output parameters and returns control to the client program 12.

As described above, in this embodiment, the user uses the client / server model definition creating means 1 to interactively provide information necessary for the interface definition by the IDL description, for example, in the specification of "language B". And the interface definition generation means 3 automatically generates the interface definition in the IDL description, and the user uses the client / server model definition generation means 1 to generate the RP.
The information necessary for the initial processing of C is interactively created according to the specification of "language B", and the client initial program 9 and the server initial program 11 are automatically generated. It becomes unnecessary to be aware of the difference in the language specifications between "and" Language B ".

[0028]

As described above, according to the present invention,
By the client / server model definition creating means, the user specifies the information necessary for the interface definition to create the client / server model definition, and the interface definition creating means creates the client / server model definition that is necessary for the interface definition. Since the interface definition described in IDL is generated from the information, the user does not need to create the interface definition described in IDL.

Also, the client / server model definition creating means allows the user to create a client / server model definition by designating the information necessary for performing the initial processing of the RPC, and the client initial program creating means creates the client / server model definition. A client processing program is generated from information necessary for initial processing of RPC in the server model definition, and a server initial program generation means generates a server initial program from information necessary for initial processing of RPC in the client / server model definition. Therefore, the user can execute R from the client / server model program.
There is no need to call the PC library.

As a result, there is no need to be aware of the description language of the client / server model program, and the productivity of the client / server program is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a client / server model program development support system according to an embodiment of the present invention.

FIG. 2 is a flowchart of an operation procedure of a client / server model program of the present invention.

FIG. 3 is a block diagram of a conventional computer program encapsulation system.

[Explanation of symbols]

 1 client / server model definition creating means 2 client / server model definition 3 interface definition creating means 4 interface definition 5 interface definition language processor 6 client stub 7 server stub 8 client initial program creating means 9 client initial program 10 server initial program creating means 11 Server initial program 12 Client program 13 Server program

Claims (2)

[Claims] 1. A client / server model definition creating means for creating a client / server model definition by a user specifying information required for an interface definition, and a client / server created by the client / server model definition creating means. From the model definition and the information necessary for the interface definition of the client / server model definition, the interface definition language I
Interface definition generating means for generating an interface definition described in DL, interface definition described in the interface definition language IDL generated by the interface generating means, and interface definition for generating a client stub and a server stub from the interface definition A language processor, a client stub generated by the interface definition language processor, for performing data conversion of output parameters and communication with a server stub using interprocess communication, and a data conversion of input parameters generated by the interface definition language processor And a client / server model program development characterized by having a server stub for communicating with a client stub using interprocess communication Calling support method. 2. A user executes a remote procedure call R
Client / server model definition creating means for creating a client / server model definition by designating information necessary for initial processing of the PC, and client / server model definition created by the client / server model definition creating means. A client initial program generation means for generating a client initial program from information necessary for performing an initial process of a remote procedure call RPC in the client / server model definition; A client initial program that calls a procedure call RPC library to perform an initial process of a remote procedure call RPC, and a remote procedure code of the client / server model definition. A server initial program generation means for generating a server initial program from information necessary for performing the initial processing of the RRP, and the server initial program generation means,
A client / server model program development support method comprising a server initial program that calls a remote procedure call RPC library to perform an initial process of a remote procedure call RPC.