JPH09319641A - Record lock control system for interactive file update processing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the non-consistence of data from being generated between a host processor and a terminal when the host processor simultaneously receives the update requests of the same record from plural terminals. SOLUTION: A front end processor (FEP) 53 is installed between a host 54 and terminals 51 and 52 and a system is constituted so as to perform interactive file update processing at the host 54 through the FEP 53 while using the update content confirm data request telegraphic message of immediate type processing and the file update execution request telegraphic message of delayed type processing. In this case, when performing exclusive control to the update of record over plural modules, exclusive control information is registered in an exclusive control table 543 and at the host 54, the exclusive control of record updating is performed by executing timer monitor based on this registered exclusive control information. At the terminals 51 and 52, the time-out error of record updating is detected by performing the timer monitor for time shorter than the time of timer monitor at the host 54.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a record lock control system in an interactive file updating process, and more particularly to a record lock control system for updating records across a plurality of modules.

[0002]

2. Description of the Related Art Conventionally, in a system in which a front-end processor (hereinafter also referred to as "FEP") is installed between a host processor (hereinafter simply referred to as "host") and the terminal, the response of the terminal is improved and the number of electronic messages is suppressed. In order to improve the processing efficiency due to the above, the interactive file update process on the host is performed by two messages with different processing modes, the update content confirmation data request message (immediate process) and the file update execution request message (delayed process). .

Immediate type processing is FEP for a request message sent by a terminal and a response message sent by a host.
Is a processing mode in which only relay is performed.

The delay type processing is the following processing mode. That is, after transmitting the request message from the terminal to the FEP, the FEP stores the request message to be transmitted to the host in the memory buffer and transmits the response message to the terminal. FEP is
When the number of request messages in the memory buffer exceeds a certain number,
Alternatively, when a certain time has elapsed since the previous transmission to the host, the request message is blocked and transmitted to the host.
The host that receives the request message performs unconditional batch update processing based on the blocked request message.

[0005]

However, in the above-mentioned conventional technique, since exclusive control for updating the same record across a plurality of modules cannot be performed, the host simultaneously requests update requests for the same record from a plurality of terminals. When received, there is a problem that data inconsistency occurs between the host and the terminal.

Therefore, the present invention has been made in view of the above-mentioned problems, and an FEP is installed between the host and the terminal to improve the response of the terminal and the processing efficiency by suppressing the number of electronic messages to improve the host. Conversational file update process in 2 different in the processing form of update content confirmation data request message (immediate process) and file update execution request message (delayed process) 2
It is an object of the present invention to provide a record lock control method in a conversational update process that prevents the occurrence of data inconsistency between a host and a terminal in a system that uses electronic messages.

[0007]

In order to achieve the above-mentioned object, the present invention provides a front-end processor between a host processor and a terminal, and an interactive file in the host processor via the front-end processor. A record update that spans multiple modules in a system that performs update processing by confirming the update content (using the update content confirmation data request message) for immediate processing and executing file update (using the file update execution request message) for delayed processing The present invention provides a record lock control method in an interactive file updating process, which is characterized in that exclusive control information is registered in an exclusive control table when performing exclusive control on the.

Further, in the record lock control method in the conversational file update processing of the present invention, the host processor carries out the exclusive control for the record update by monitoring the timer based on the exclusive control information. It is characterized by

Further, in the record lock control system in the interactive file updating process of the present invention, the timer update time is shorter than the timer monitoring time in the host processor, so that the record update time-out error occurs in the terminal. It is characterized by detecting.

According to the record lock control method in the interactive file update processing of the present invention having the above-mentioned configuration, the host processor registers the exclusive control information in the exclusive control table and monitors the timer, An error occurs in the received message for the same record during timer monitoring.

When the host processor completes the timer monitoring, the host processor releases the exclusive control of the record and puts the record in an updatable state.

Further, the terminal controls the message transmission by the timer monitoring in the terminal, so that the message for the same record is not simultaneously transmitted from the plurality of terminals to the host after the completion of the timer monitoring in the host processor. .

By the above operation, exclusive control for updating records across a plurality of modules becomes possible.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention. Referring to FIG. 1, the present invention, in its embodiment, includes a terminal 11, a front end processor (FEP) 12, and a host processor (host) 1.
3 and the master file 14.

The terminal 11 has a screen 111 for displaying confirmation data such as transaction details, and an update content confirmation data request message to the host 13 via the FEP 12 (hereinafter also simply referred to as "confirmation request message") 15 And a file update interruption request message (hereinafter also simply referred to as “interruption request message”) 17, and an update content confirmation data response message (hereinafter also simply referred to as “confirmation response message”) 16 and a file update interruption response, which are responses to them. Reception of a message (hereinafter also simply referred to as “interruption response message”) 18, transmission of a file update execution request message (hereinafter also simply referred to as “execution request message”) 19 to the FEP 12, and a file update execution response as a response thereto. Message (hereinafter also simply referred to as "execution response message")
20 is received and a timer is monitored.

The FEP 12 receives the execution request message 19 from the terminal 11, transmits the execution response message 20 as a response thereto, blocks the execution request message 19, and blocks the execution request message 19 blocked to the host 13. Transmission, reception of confirmation request message 15 and interruption request message 17 from terminal 11, relay to host 13 for them, reception of confirmation response message 16 and interruption response message 18 from host 13, and terminal 11 for them And relay to.

The host 13 is an immediate processing module 13
1, a delay type processing module 132, and an exclusive control table 133 for registering exclusive control information.
The immediate processing module 131 receives the confirmation request message 15 and the interruption request message 17 from the terminal 11 via the FEP 12, transmits the confirmation response message 16 and the interruption response message 18 which are responses to them, and performs exclusive control. Registration and deletion of exclusive control information in the table 133 and timer monitoring are performed. The delay type processing module 132 uses the FE
The execution request message 19 is received from P12, the master file 14 is updated, and the exclusive control information is deleted from the exclusive control table 133.

Next, the operation of the embodiment of the present invention will be described. 2 to 4 are flowcharts showing the flow of processing in the terminal, FEP and host according to the embodiment of the present invention.

First, the operation of the terminal according to the embodiment of the present invention will be described.

Referring to FIGS. 1 and 2, the terminal 11
First, when the action in step 201 is an update confirmation request from the operator, the confirmation request message 15 is transmitted to the host 13 via the FEP 12 (step 202).

Second, the action of step 201 is
When the confirmation response message 16 is received from the host 13,
Start timer monitoring for a predetermined time (Y minutes) (step 20
3), display the update content confirmation data on the screen 111 and wait for the confirmation key from the operator (step 20).
4).

Third, the action of step 201 is
When the operator presses the confirmation key, the elapsed time from the start of timer monitoring is inspected (step 205),
The following processing is performed according to the elapsed time from the start of timer monitoring.

That is, when the elapsed time from the start of timer monitoring is within Y minutes, the execution request message 19 is sent to the FEP 12.
Is transmitted (step 206), and if it exceeds Y minutes, a timeout error is detected and the interruption request message 17 is transmitted to the host 13 via the FEP 12 (step 207).

Fourth, the action of step 201 is
When the execution response message 20 is received from the FEP 12,
The initial screen of the file update process is displayed on the screen 111, and the file update process ends (step 208).

Fifth, the action of step 201 is
When the interruption response message 18 is received from the host 13,
An error is displayed on the screen 111 (step 209).

Next, the FEP in the embodiment of the present invention
Will be described.

Referring to FIGS. 1 and 3, FEP 12
First, the action of step 301
When the execution request message 19 is received from, the execution request message 19 is accumulated in the memory buffer (step 302),
The execution response message 20 is transmitted to the terminal 11 (step 30).
3). Then, when the number of messages in the memory buffer exceeds a certain number, or when a certain time has passed since the previous transmission to the host 13, the messages in the memory buffer are blocked and transmitted to the host 13 (step 30).
4).

Second, the action of step 301 is
When the confirmation request message 15 or the interruption request message 17 is received from the terminal 11, only the relay is performed and the confirmation request message 15 or the interruption request message 17 is transmitted to the host 13 (step 305).

Third, the action of step 301 is
When the confirmation response message 16 or the interruption response message 18 is received from the host 13, only the relay is performed and the confirmation response message 16 or the interruption response message 18 is transmitted to the terminal 11 (step 306).

Finally, the operation of the host in the embodiment of the present invention will be described.

Referring to FIGS. 1 and 4, host 13
First, when the processing form in step 401 is immediate processing, the immediate processing module 131 performs the following processing according to the action in step 402.

That is, when the action in step 402 is the reception of the confirmation request message 15 from the terminal 11, it is determined whether or not the timer monitoring for the same record is performed by referring to the exclusive control table 133. (Step 403). Here, when the timer monitoring for the same record is not performed, the timer monitoring is started (step 404) and the terminal 11 is passed through the FEP 12.
The confirmation response message 16 is transmitted to (step 405). On the other hand, when timer monitoring is being performed on the same record, a predetermined time (X
Minutes) is determined (step 40
3) If X minutes have passed since the start of timer monitoring, timer monitoring is started (step 404) as in the case where the timer monitoring described above is not performed, and FEP1
The acknowledgment message 16 is transmitted to the terminal 11 via 2 (step 405). On the other hand, if it is within X minutes from the start of timer monitoring, this message is regarded as an error and FEP
The acknowledgment message 16 is transmitted to the terminal 11 via 12 (step 406).

When the action in step 402 is the reception of the interruption request message 17 from the terminal 11, the FE
The interruption response message 18 is transmitted to the terminal 11 via P12 (step 407), and the exclusive control of the file is released (step 408).

Secondly, when the processing form of step 401 is the delay type processing and the execution request message 19 is received from the FEP 12, the delay type processing module 132 updates the master file 14 (step 409). The exclusive control of is canceled (step 410).

[0036]

Next, in order to more specifically describe the above-described embodiment of the present invention, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 5 is a block diagram showing the configuration of an embodiment of the present invention. Referring to FIG. 1, one embodiment of the present invention includes two terminals 51, 52, a front end processor (FEP) 53, and a host processor (host) 54.
And a master file 55.

Upon receiving the update confirmation request from the operator, the terminals 51 and 52 pass the host 54 via the FEP 53.
When the confirmation request messages 56 and 62 are transmitted to and the confirmation response messages 57 and 63 are received from the host 54, the timer monitoring for Y minutes is started.

When the terminals 51 and 52 receive a file update request (pressing the confirmation key) from the operator, the FE
Execution request messages 60 and 66 are sent to P53, and FEP53
When the execution response telegrams 61 and 67 are received from, the initial screen of the file update process is displayed and the file update process is terminated.

Further, the terminals 51 and 52 receive confirmation response messages 57 and 63 from the host 54, start timer monitoring, and then, after exceeding Y minutes, the operator presses the confirmation key and executes the FEP 53. When attempting to transmit the request messages 60 and 66, the terminals 51 and 52 detect a time-out error, and the host 5 passes through the FEP 53.
4, the interruption request message 58, 64 is transmitted.

The screen 51 of each of the terminals 51 and 52
Update content confirmation data is displayed at 1, 521.

Upon receiving the confirmation request messages 56 and 62 from the terminals 51 and 52, the FEP 53 only relays and sends the confirmation request messages 56 and 62 to the host 54.

When the FEP 53 receives the interruption request messages 58 and 64 from the terminals 51 and 52, the FEP 53 only relays and transmits the interruption request messages 58 and 64 to the host 54.

Further, when the FEP 53 receives the execution request messages 60, 66 from the terminals 51, 52, the terminals 51, 5
2, the execution response messages 61 and 67 are transmitted, and the execution request messages 60 and 66 are blocked and the host 5 collectively.
Send to 4.

The host 54 is an immediate processing module 54.
1, a delay type processing module 542, and an exclusive control table 543 for registering exclusive control information.

Immediate processing module 541 of host 54
When receiving the confirmation request messages 56 and 62 from the terminals 51 and 52, transmits the confirmation response messages 57 and 63 to the terminals 51 and 52, registers the exclusive control information in the exclusive control table 543, and monitors the timer for X minutes. Start.

Here, the immediate processing module 541 of the host 54 receives the confirmation request message 62 for the same record from the terminal 52 within X minutes after starting the timer monitoring by receiving the confirmation request message 56 from the terminal 51. In that case, an acknowledgment message 63 is transmitted to the terminal 52 as an error.

Also, the immediate processing module 541 of the host 54 sends interruption request messages 58, 64 from the terminals 51, 52.
When receiving the message, the interruption response messages 59 and 65 are transmitted to the terminals 51 and 52 via the FEP 53, and the exclusive control table 5
The corresponding exclusive control information is deleted from 43.

Delay type processing module 542 of host 54
When the execution request messages 60 and 66 are received, the master file 55 is updated and the corresponding exclusive control information is deleted from the exclusive control table 543.

Next, the operation of the embodiment of the present invention will be specifically described.

Referring to FIG. 5, when the interactive file updating process is performed from the terminal 51, first, the following process is performed by the immediate process.

That is, when the terminal 51 receives the update confirmation request from the operator, the terminal 51 transmits the confirmation request message 56 to the host 54 via the FEP 53. Confirmation request message 56
The immediate processing module 541 of the host 54 that receives the
Registers the message type and message reception time as exclusive control information in the exclusive control table 543, and starts timer monitoring for X minutes. Then, the confirmation response message 57 is transmitted to the terminal 51 via the FEP 53.

The terminal 51 which received the confirmation response message 57
The timer monitoring for Y minutes is started, the received update content confirmation data is displayed on the screen 511, and the confirmation key waiting state is set. The relationship between X and Y at this time is “X> Y”.

In this state, when the terminal 52 transmits the confirmation request message 62 to the host 54 via the FEP 53 and the host 54 receives the confirmation request message 62, the immediate processing module 541 sets the exclusive control table 543. refer. If the confirmation request message 56 and the confirmation request message 62 are messages for the same record and the elapsed time from the start of timer monitoring when the confirmation request message 56 is received is within X minutes, the immediate processing module 541 Confirmation request message 6
With 2 as an error, the confirmation response message 63 is transmitted to the terminal 52 via the FEP 53. Then, the terminal 52 displays an error on the screen 521.

When the operator of the terminal 51 confirms the update content confirmation data on the screen 511 and presses the confirmation key, the following processing is performed by the delay type processing.

The terminal 51 transmits the execution request message 60 to the FEP 53 when the confirmation key is pressed within Y minutes after the confirmation key is waited on the screen 511. The FEP 53 stores the received execution request message 60 in the memory buffer and transmits the execution response message 61 to the terminal 51. Then, when the number of messages in the memory buffer exceeds a certain number, or when a certain time has passed since the previous transmission to the host 54, the messages in the memory buffer are blocked and transmitted to the host 54. When the host 54 receives the blocked electronic message, the delay type processing module 542 of the host 54 updates the master file 55 and deletes the corresponding exclusive control information registered in the exclusive control table 543.

On the other hand, when the confirmation key is pressed on the screen 511 after Y minutes have passed and the confirmation key is pressed,
The terminal 51 detects the time-out error. Then, the terminal 51 transmits the interruption request message 58 to the host 54 via the FEP 53. When the host 54 receives the interruption request message 58, the immediate processing module 541 of the host 54.
Deletes the corresponding exclusive control information registered in the exclusive control table 543 so that the confirmation request messages 56 and 62 for the same record can be received.

Even when a line failure or the like occurs while waiting for the confirmation key on the screen 511, when the immediate processing module 541 of the host 54 has exceeded X minutes since the timer monitoring was started. Exclusive control table 543
Since the exclusive control information registered in is deleted in this case, the confirmation request messages 56 and 62 for the same record are deleted even in this case.
Can be accepted.

Although the embodiments and examples of the present invention have been described above, the present invention is not limited to such embodiments and examples, and various embodiments according to the principle of the present invention are possible. Including forms and examples.

FIG. 6 is a flow chart showing the flow of processing at the terminal in another embodiment of the present invention.

As shown in FIG. 6, in another embodiment of the present invention, the operation of the terminal can be changed from that shown in FIG. 2 to that shown in FIG.

Referring to FIGS. 1, 2 and 6, when the action in steps 201 and 601 is an update confirmation request from the operator, the terminal 11 sends a confirmation request message 15 to the host 13 via the FEP 12. Is transmitted (steps 202 and 602).

When the action in steps 201 and 601 is to receive the confirmation response message 16 from the host 13, the timer monitoring for a predetermined time (Y minutes) is started (steps 203 and 603), and the screen 111 is displayed. The update content confirmation data is displayed to wait for a confirmation key from the operator (steps 204 and 604).

In the above-described embodiment, when the operator presses the confirmation key at this time (step 201), the elapsed time from the start of timer monitoring is inspected (step 2).
05), if the elapsed time is within Y minutes, the execution request message 19 is transmitted to the FEP 12 (step 206), and if it exceeds Y minutes, a timeout error is detected,
The interruption request message 17 is transmitted to the host 13 via the FEP 12 (step 207).

On the other hand, in another embodiment of the present invention, as shown in FIG. 6, when the action of step 601 is the time over which the timer monitoring at the terminal 11 is exceeded, that is, the confirmation key is pressed by the operator for Y minutes. If the pressing operation is not performed, the interruption request message 17 is transmitted to the host 13 via the FEP 12 when Y minutes have elapsed from the start of timer monitoring (step 606). Therefore, according to another embodiment of the present invention, an error is automatically displayed on the screen 111 of the terminal 11 when Y minutes have elapsed from the start of timer monitoring. When the confirmation key is pressed within Y minutes from the start of timer monitoring, the execution request message 19 is transmitted to the FEP 12 as in the case of the above-described embodiment (step 605).

As described above, according to the other embodiment of the present invention as well, the execution request message 19 for the same record is not simultaneously transmitted from a plurality of terminals, and the same effect as in the above-described embodiment can be obtained. You can

[0067]

As described above, according to the present invention,
By registering exclusive control information in the exclusive control table and performing exclusive control over multiple modules, it is possible to disable acceptance of confirmation request messages for the same record from multiple terminals. Updates can be prevented.

Further, according to the present invention, the host processor performs timer monitoring based on the exclusive control information registered in the exclusive control table, and when a certain time has elapsed from the start of timer monitoring, a confirmation request message for the same record is sent. The record can be updated even if the exclusive control for a certain record is not released due to the occurrence of a line failure or the like, which keeps waiting for the confirmation key on the terminal screen. Can be returned to the state.

Further, according to the present invention, since the terminals monitor the timer for a time shorter than the timer monitoring time in the host processor, the execution request message for the same record is not transmitted from a plurality of terminals. It is possible to prevent the occurrence of data inconsistency between the host processor and the terminal.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing a flow of processing in the terminal according to the embodiment of the present invention.

FIG. 3 is a flowchart showing a processing flow in a front end processor (FEP) according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a processing flow in a host processor (host) according to the embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of one embodiment of the present invention.

FIG. 6 is a flowchart showing a flow of processing in a terminal according to another embodiment of the present invention.

[Explanation of symbols]

11, 51, 52 Terminal 111, 511, 521 Screen 12, 53 Front-end processor (FEP) 13, 54 Host processor (host) 131, 541 Immediate processing module 132, 542 Delayed processing module 133, 543 Exclusive control table 14 , 55 Master file 15, 56, 62 Update content confirmation data request message (confirmation request message) 16, 57, 63 Update content confirmation data response message (confirmation response message) 17, 58, 64 File update interruption request message (interruption request message) ) 18, 59, 65 File update interruption response message (interruption response message) 19, 60, 66 File update execution request message (execution request message) 20, 61, 67 File update execution response message (execution response message)

Claims (3)

[Claims] 1. A front end processor is installed between a host processor and a terminal, and a file for interactive file update processing in the host processor via the front end processor is used for confirmation of update contents of immediate processing and delay processing. A record lock control method in interactive file update processing, wherein exclusive control information is registered in an exclusive control table when exclusive control is performed on record updates across multiple modules in a system that performs update. 2. The conversational file update process according to claim 1, wherein the host processor performs timer control based on the exclusive control information to perform exclusive control for updating the record. Record lock control method in. 3. The conversational file according to claim 2, wherein the terminal monitors a record update time-out error by performing timer monitoring for a time shorter than a timer monitoring time in the host processor. Record lock control method in update processing.