JPH11149450A - Transaction agent system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify user operation by substituting an on-line job with an agent program without correcting a conventional on-line transaction system. SOLUTION: This system is composed of an agent server 20 for activating/ allocating an agent program 30 and the agent program 30 to be activated from the agent server 20, the agent server 20 is a server for controlling the correspondence between the agent program 30 and a client in connecting the client and a program for transmitting received data from the client to an on-line transaction system 10 as they are, transmitting received data from the on-line transaction system 10 to the client and preserving them on a disk.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a transaction agent system, and more particularly, to a transaction agent system for a low-reliability network.

[0002]

2. Description of the Related Art An online transaction system is a business processing system composed of a server and a client, in which application processing for updating a database and the like is provided on the server side, compared with a system having application processing on the client side. Multiple tasks can be processed simply by preparing a general-purpose program that performs only one screen display and screen input / output data communication on the client side, and the communication volume between the client and server is also reduced. This system is characterized by reducing the load on the network, increasing the throughput of the entire system, reducing communication costs, and facilitating guarding against unauthorized access.

[0003] An agent system is a general term for a system that enables a complex process to be realized by only a simple operation. As an example of applying the agent system to the above-described online transaction processing system,
For example, there is a technique disclosed in Japanese Patent Application Laid-Open No. 8-147365, in which application logic for performing processing is not provided in the server from the beginning, but is sent from a client so that a variety of information services can be supported. .

[0004]

By the way, conventionally, in order to send an agent program from a client side,
It is necessary to install an agent program for all tasks in all clients in advance, and there is a problem that the advantage of an online transaction system in which a plurality of tasks can be processed by only one program in the past is lost.

Conventionally, since the processing result can be returned only to the client that started the agent, there has been a problem that in the case of a client failure, the transaction itself has to be canceled.

[0006] The present invention has been made in view of the above circumstances, and simplifies user operations by substituting an online program for an agent program without modifying a conventional online transaction system. Aim. In addition, the present invention allows an agent program to perform a dialogue with an online transaction system on behalf of an online transaction system.
It is intended to be feasible.

[0007]

In order to solve the above problems, the point of the present invention is to fulfill the following functions. 1. For online transaction systems,
Act like a client. 2. To the client, it behaves like an online transaction system. 3. The agent program does not show a failure to the online transaction system even if the communication connection from the client is disconnected. 4. When a connection for communication from the client is connected, the agent program checks whether there is any work being processed, and if there is a work being processed, enables the continuation processing.

More specifically, it operates on a computer on which a server-client type online transaction system operates, and starts / starts an agent program.
An agent server that performs assignment, and an agent program that is started from the agent server, the agent server is a server that controls correspondence between the agent program and the client when a client is connected, and the agent program includes: It is a program for transmitting data received from a client to the online transaction system as it is, transmitting data received from the online transaction system to the client, and storing the data on a disk. Further, the present invention is characterized in that, in response to a specific request from the client, the agent program transmits received data corresponding to the request from the received data stored on the disk to the client. Further, the present invention, the agent server, when connecting a client, determines whether or not the previously connected client,
When the client is a previously connected client, the previously associated agent program is associated with the client.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a transaction agent system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a file transfer system targeted in the present embodiment. As shown in FIG. 1, an object of the present embodiment is an agent server 20 which operates on a computer on which a server-client type online transaction system 10 operates and starts / allocates an agent program 30.
And an agent program 30 started from the agent server 20.
0 controls the correspondence of the agent program 30 at the time of connection from the client, the agent program 30 transmits data received from the client to the online transaction system as it is, transmits data received from the online transaction system to the client, and saves it on the disk. The agent system is characterized in that it can display an old screen or a latest screen in response to a specific function key input from a client.

When a client first connects to the system, the client is required to input a user ID and a password. The user ID and password are stored in the agent server 2
It is prepared in advance with a setting of 0, and information is stored in a user definition file. When these items are input and transmitted to the agent server 20, the agent server 20 checks whether the combination of the user ID and the password is correct by referring to the user definition file. If it is not correct, the connection is rejected as an error. If it is correct, the agent management file is searched for the agent program 30 already assigned to the specified user ID.

If there is no search result, a new agent program 30 is started and written into the agent management file. When there is an agent program 30 assigned to the designated user ID, if the agent program 30 is currently communicating with another terminal, the communication with that terminal is disconnected and the current terminal is connected. When communicating with another terminal, for example,
For example, a communication failure that cannot be detected on the server side has occurred. If not communicating with another terminal, a session with that terminal is started.

FIG. 2 is a diagram showing a sequence when a client connects to the system for the first time. FIG. 3 is a diagram showing a sequence when the agent program 30 corresponding to the specified user ID already exists.

When connected, the agent program 30 connects to the online transaction system when newly started, and transmits a screen output by the online transaction system to the client at the time of connection. If not, get the current screen of the transaction from the screen history file,
Send to client.

FIG. 4 is a diagram showing a sequence of a transaction during connection. Agent program 30
Transmits the data received from the client to the online transaction system as it is, and transmits the data (screen) received from the online transaction system to the client as it is. However, the data received from the online transaction system is stored in a screen history file, and the previous screen and the latest screen can be referred to in response to a request (specific function key input) from the client.

When an explicit disconnection request is made from the client to the agent program 30, or when the client does not reconnect after a preset time has passed while the client is disconnected. Disconnects the connection with the online transaction server, deletes the saved screen data, deletes itself from the agent management file, and terminates the agent program 30.

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 5 is a diagram illustrating an example of a client display screen according to the present embodiment. Here, it is assumed that the information processing system is used in an employee information management system as shown in FIG. In this system, if you enter an employee number or name and press the search button, you will get all the information about the employee, enter all the information and press the register button,
New registration is possible. The registered information can be changed or deleted from the searched information by using an update button or a delete button. First, the terminal connects to the network on which the online transaction system operates, and connects to the agent server 20.

The sequence at that time is the same as in FIG.
Upon connection, the agent server 20 outputs an input screen for a user ID and a password, and the client inputs the user ID and the password and transmits them to the agent server 20. The agent server 20 checks whether the user ID and the password are correct based on the user definition file. As shown in FIG. 8, the user definition file stores a user ID, an encoded password, and additional information of a user, one for each record.

Here, the case where the input user ID and password are correct will be described. Next, it is checked whether the agent program 30 corresponding to the user ID already exists by referring to the agent management file. The agent management file has the agent ID (the agent server 20 is assigned to the agent program 30 as shown in FIG. 9). Unique ID), user I
D. The network address of the client is stored one by one in one record.

Here, since this is the first connection, there is no user ID input in the agent management table, so a new agent program 30 is started and the user ID is written in the agent management table. In this state, the client is connected to the agent program 30, and the agent program 30
Connect to an online transaction server. Since the online transaction server outputs a screen as shown in FIG. 5 in which no information is embedded in any fields to the agent program 30 as an initial screen, the agent program 30 saves the screen in a screen history file and transmits the screen to the client. Send.

Here, as shown in FIG. 10, the screen history file is composed of the latest surface ID, the current screen ID, and a plurality of variable-length screen data. The screen ID is a sequence number sequentially assigned from 1, the latest screen ID is the screen 1D of the last output screen, and the current screen ID is the screen ID of the surface currently displayed on the client.
Is shown. Each screen data has a variable length and has a format as shown in FIG.

In the client, this surface is shown in FIG.
Enter the employee number and press the search button. Here, it is assumed that a failure occurs in the network during the search process and the connection with the agent program 30 is disconnected. Even if the connection with the client is disconnected, the agent program 30 maintains the connection with the online transaction system, receives the search result, and writes the received result to the screen history file. Further, an attempt is made to output a screen to the client, but since an error occurs, the agent program 30 waits in a state of waiting for reconnection from the client.

On the other hand, the user using the client reconnects to the agent server 20 because it seems that an error has occurred while waiting for the search result. The sequence at that time is the same as in FIG. The agent server 20 outputs a screen for inputting a user ID and a password, and the client inputs the user ID and password and transmits the screen to the agent server 20. The agent server 20 checks whether the user ID and the password are correct based on the user definition information.

Here, a description will be given of a case where the entered user ID and password are correct. Next, it is checked by referring to the agent management file whether the agent program 30 corresponding to the user ID already exists. This time, since it exists in the agent management table, the agent server 20 transfers control to the corresponding agent program 30. Since the agent program 30 is connected from the client, it outputs the last information written in the screen history file as the latest surface. The client can receive the search result screen, so update the employee information and press the update button.

When the agent program 30 of the present embodiment is not used, it is necessary to start over from the point where the employee number is input and the search button is pressed. Agent program 30
Sends the received data to the online transaction system as it is, and the employee information is updated.

[0025]

As described above, according to the present invention, if the reliability of the network is low in a task completed by a plurality of transactions, it is necessary to restart the transaction from the beginning each time a failure occurs. Therefore, there is an effect that it is possible to use an online transaction system, which was impossible in the past, in a network with low reliability. Further, after a failure occurs in the client, there is no need to re-enter the transaction again, so that the communication cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a file transfer system targeted by the present invention.

FIG. 2 is a diagram showing a sequence when a client connects to the system for the first time;

FIG. 3 is a diagram showing a sequence of reconnection after being disconnected once due to a failure or the like;

FIG. 4 is a diagram showing a sequence during a normal transaction process.

FIG. 5 is a diagram showing an input screen of the embodiment.

FIG. 6 is a diagram showing a screen on which information for searching is input in the embodiment.

FIG. 7 is a diagram illustrating a search result screen in the embodiment.

FIG. 8 is a diagram showing a format of a user definition file.

FIG. 9 is a diagram showing a format of an agent management file.

FIG. 10 is a diagram showing a format of a surface history file.

FIG. 11 is a diagram showing a format of screen data in a screen history file.

[Explanation of symbols]

 10 online transaction system 20 agent server 30 agent program

Claims (3)

[Claims] 1. An agent server that operates on a computer on which a server-client type online transaction system operates and performs activation / assignment of an agent program; and an agent program activated by the agent server. The server is a server that controls the correspondence between the agent program and the client when the client is connected. The agent program transmits the received data from the client to the online transaction system as it is and receives the data from the online transaction system. A transaction agent system which is a program for transmitting data to a client and storing the data on a disk. 2. The system according to claim 1, wherein the agent program transmits received data corresponding to the request from the received data stored in the disk to the client in response to a specific request from the client. Transaction agent system. 3. The method according to claim 1, wherein the agent server determines whether or not the client is a previously connected client when the client is connected.
2. The transaction agent system according to claim 1, wherein the previously associated agent program is associated with the client.