JPH04107758A - File transfer system - Google Patents

Abstract

PURPOSE:To improve processing efficiency by transmitting a record stored in a buffer when it is recognized that the buffer is not updated after the lapse of prescribed time by monitoring the state of the buffer to a reception side system as a piece of data, and initializing the buffer. CONSTITUTION:A data transmission means 7 is started up when the buffer 8 is filled with accumulated records. The data transmission means 7 summarizes plural records accumulated in the buffer 8 in a piece of data according to a promise (protocol) decided between the reception side system 2, and transmits the data to the reception side system 2 by starting up a communication means 11, and initializes the buffer 8. Meanwhile, a buffer monitoring means 10 monitors a time stored in a buffe update time storage means 9, and starts up data transmission means 7 when no buffer is updated for the prescribed time. The data transmission means 7 summarizes the plural records accumulated in the buffer 8 in a piece of data, and transmits it to the reception side system 2, and initializes the buffer 8. Thereby, the processing efficiency can be improved.

Description

[Detailed Description of the Invention] 1. Field of Industrial Application) The present invention relates to a file transfer method between a plurality of systems connected by a communication line [Prior Art] When transferring files between systems, the sending system takes performance into consideration, and instead of sending the records stored in the file to the receiving system directly through the communication line, multiple records are sent using the protocol (the sending side The data is sent together as one data in a format determined by a predetermined agreement between the system and the receiving system.

At this time, when combining multiple records into one piece of data, a record storage means that temporarily stores multiple records is prepared, and the records read from the file are temporarily stored, and the buffer becomes full of records. At that point, the records in the buffer were combined into one piece of data and the data was sent to the receiving system.

[Problem to be solved by the invention]

In the conventional file transfer method described above, the data transmission process is often temporarily interrupted on the sending system due to factors such as input/output of the transfer source file, processing of the file transfer business program, or system load status. In that case, records are still stored in the buffer and data is not passed to the communication means, resulting in idle time in the processing of the communication means and communication line, making it impossible to fully utilize the processing capacity of the communication line. The drawback is that high-performance file transfer cannot be achieved.

[Means to solve the problem]

The file transfer system according to the present invention is a file transfer method between a plurality of systems connected by a communication line, and includes a transfer source file storing records of a transfer source in file transfer, and records from the transfer source file. A file transfer business program that reads the file and sends records to the receiving system in the file transfer, and a predetermined agreement (protocol) between the file transfer business program and the receiving system regarding file transfer. Accordingly, there is provided a file transfer protocol execution means for transmitting and receiving control data and file records necessary for file transfer, and a file transfer protocol executing means for transmitting and receiving control data and file records necessary for file transfer, and a file transfer protocol execution means for transmitting and receiving control data and file records necessary for file transfer, and a collection of records stored in the record storage means into one data in a format specified by the protocol. a buffer for temporarily accumulating a plurality of records; a record accumulating means for accumulating in the buffer records passed from the file transfer business program in the file transfer protocol execution means; When the number of records accumulated in the buffer by the record accumulation means exceeds a certain amount, the data transmission means collects the records accumulated in the buffer into one data in a format specified by the protocol and transmits it to the receiving system; started by the file transfer protocol execution means.
A file transfer system comprising a communication means for transmitting and receiving control data and file records compiled in a format specified by the protocol, which the file transfer protocol execution means secretly transmits and receives to and from the receiving system, through the communication line. In the sending side system, buffer update time storage means is activated by the record storage means and stores a time when records passed from the file transfer business program were last stored in the buffer; monitors the update time of the buffer in which the buffer is updated, and if the buffer has not been updated for a certain period of time or more, activates the data transmitting means, regardless of the amount of records accumulated in the buffer, buffer monitoring means for transmitting data to a receiving system, and even if the buffer is not full, at least the input pressure of the transfer source file, the processing of the file transfer business program, or the system load is maintained. Due to condition factors,
If the data transmission process is temporarily interrupted, the records stored in the buffer at that time are transmitted to the receiving system.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

Referring to FIG. 1, one embodiment of the present invention includes a sending system 1, a receiving system 2, a transfer source file 3, a file transfer business program 4, a file transfer protocol execution means 5, a record storage means 6, a data transmission It is composed of a means 7, a buffer 8, a buffer update time storage means 9, a buffer monitoring means 10, a communication means 11, a communication line 12, and a transfer destination file 13.

Next, the operation of the present invention will be explained with reference to the drawings.

The sending system 1 and the receiving system 2 are connected to the communication line 1.
2, the sending system 1 has a source file 3 for file transfer, and the receiving system 2 has a destination file 13 for file transfer.

The operation of the sending system when transferring files between the sending system 1 and the receiving system 2 through the communication line 12 will be described below.

The transfer source file 3 stores a plurality of records. The file transfer business program 4 reads the record in the transfer source file 3 and starts the file transfer protocol execution means 5. When the file transfer protocol execution means 5 receives a record from the file transfer business program 4, it activates the record storage means 6. The record storage means 6 checks the size of the records stored in the buffer 8, which is an area for temporarily storing records passed from the file transfer business program 4.

If there is space in the buffer 8, the records passed from the file transfer business program 4 are accumulated in the buffer 8,
Furthermore, the buffer update time storage means 9 is activated to update the buffer 8! &Remember the updated time after.

If the buffer 8 is full of already stored records, the data transmitting means 7 is activated. .

The data transmitting means 7 combines the plurality of records accumulated in the buffer 8 into one data according to a predetermined agreement (protocol) with the receiving system 2, and activates the communication means 11. Data is transmitted to the receiving system 2 and the buffer 8 is initialized.

On the other hand, the buffer monitoring means 10 monitors the time stored in the buffer update time storage means 9, and activates the data transmission means 7 if the buffer is not updated for a predetermined period of time or more. The data transmitting means 7, in the same way as when activated by the record accumulating means 6, combines a plurality of records accumulated in the buffer 8 into one data, activates the communication means 11, and transmits the data to the receiving system 2. The buffer 8 is initialized by transmitting the data.

Repeat the above steps to transfer the file.

〔Effect of the invention〕

As explained above, in the present invention, data transmission processing can be temporarily interrupted in the sending system due to factors such as input of the transfer source file, processing of the file transfer business program, system load status, etc. However, if the buffer status is monitored and the buffer is not updated for a certain period of time, the communication means can transmit the record stored in the buffer at that time as one piece of data to the receiving system. This makes it possible to perform high-performance file transfer that fully utilizes the processing capacity of the communication line without causing any idle time in the processing of the communication line.

...Transfer source system, 4. File transfer business program, 5. File transfer protocol execution means, 6.
. . . record storage means, 7 . . . secondary transmission means, 8° buffer, 9 .
- Buffer monitoring means, 11... Communication means, 12... Communication line, 13... Transfer destination file.

Claims (1)

[Claims] A file transfer method between a plurality of systems connected by a communication line, comprising: a source file storing source records in file transfer; and reading records from the source file. , a file transfer business program that sends records to a receiving system in file transfer; and a file transfer business program that is started by the file transfer business program and follows a predetermined agreement (protocol) between the file transfer and the receiving system. a file transfer protocol execution means for transmitting and receiving control data and file records necessary for file transfer; and a plurality of records stored in the record storage means that are combined into one data in a format specified by the protocol. a buffer for temporarily accumulating records of; a record accumulating means for accumulating in the buffer records passed from the file transfer business program in the file transfer protocol execution means; a data transmitting means for combining the records accumulated in the buffer into one data in a format specified by a protocol and transmitting the data to a receiving system when the number of records accumulated in the buffer exceeds a certain amount by the accumulating means; activated by the transfer protocol execution means,
A file transfer system comprising a communication means for sending and receiving control data sent and received by the file transfer protocol execution means to and from the receiving system and data in which file records are summarized in a format specified by the protocol, through the communication line. In the sending system, buffer update time storage means is activated by the record storage means and stores a time when records passed from the file transfer business program are last stored in the buffer; The update time of the buffer stored in the buffer is monitored, and if the buffer has not been updated for a certain period of time or more, the data transmission means is activated to receive data regardless of the amount of records accumulated in the buffer. buffer monitoring means for transmitting data to the side system, and even if the buffer is not full, at least the input/output of the transfer source file, the processing of the file transfer business program, or the load state of the system is provided. Due to the factors of
A file transfer method characterized in that when data transmission processing is temporarily interrupted, records accumulated in a buffer at that time are transmitted to a receiving system.