JP4157520B2 - Transmission system and transmission method - Google Patents

Description

  The present invention relates to a transmission system and method for receiving, for example, a message for performing a commercial transaction between companies, processing the received message in a distributed manner, and sequentially outputting the processed message to a transmission destination.

  In recent years, business transactions between companies have been frequently conducted by Electronic Data Interchange. With the advent of Internet EDI that uses the Internet for communication lines and exchanges messages using application protocols such as FTP and HTTP, it has become easier for companies to introduce EDI systems. When the number of business partners who conduct transactions by EDI increases, the combination of trading parties increases as a multiplier, and a large amount of transmission processing occurs in the transmission system for realizing message exchange therebetween. In such a case, in order to prevent the occurrence of a failure due to a delay in message transmission, it has been conventionally performed to provide a plurality of processing lines and distribute the processing to each line according to the load situation. For example, when messages are transmitted continuously, processing of each message is distributed to each line by a round robin method. FIG. 16 is a functional block diagram for explaining an example of an apparatus for selecting a processing line in a round robin manner for all received messages. The apparatus 151 in this example exchanges messages between the order-side systems 101 to 103 and the order-receiving systems 201 to 203. The communication means 152 of the apparatus 151 communicates with the ordering systems 101 to 103 via the communication line 301 and communicates with the order receiving systems 201 to 203 via the communication line 302. For example, when a plurality of messages such as order information are received from the order-side systems 101 to 103, the distribution unit 153 of the apparatus 151 changes the processing line for distributing the messages in the order in which the messages are received. If the distribution line is completed, the line at the start of distribution is selected as the line for processing the next received message. As described above, the message processed in the processing line selected by the round robin method is subjected to subsequent processing by the means 154 at the subsequent stage of the line.

  By the way, in electronic commerce, in order to maintain the consistency, the order of message transmission may be important. For example, when order information is transmitted and then information for canceling the order is transmitted, the cancel information needs to be received next to the order information. Even if the cancellation information is received before the order information, the non-existing order is canceled, and the receiving side cannot perform processing normally.

  However, if the processing is distributed over a plurality of lines, even if the processing lines are changed in the order of message reception, the number of transactions increases, and as the data of different sizes increases, the load situation on each line becomes uneven. If the processing time in each line is longer than the message transmission interval, the message transmission order may change.

Even when performing distributed processing in this way, as described in Patent Document 1, for example, if a serial number or date / time indicating the transmission order is attached to the data, the transmission order is determined on the receiving side based on the added information. Can be restored.
Japanese Patent Laid-Open No. 6-83741

  As described above, when using a serial number or date / time indicating the sending order, if the order is not guaranteed for the distributed processing, the receiving side must confirm and restore the sending order of the message based on them. If all messages are restored, the load required for the processing increases and the time increases. For this reason, even in the case of distributed processing, a system that can easily guarantee the transmission order within a range that does not hinder electronic commerce is desired.

  The present invention provides a transmission system and method capable of simply assuring the transmission order of messages as needed while performing distributed processing in order to solve such problems in the conventional technology. Objective.

  A transmission system provided by the present invention is a system for processing a received message with a line selected from among a plurality of processing lines and then outputting the message to a destination of the message. The following measures are adopted.

  In this transmission system, when a message is received from one party exchanging messages, the specifying means specifies the source of the message. Further, the acquisition means acquires control information for selecting a line for processing the message. The determination means determines whether to select message processing lines in the order of reception using the control information. If it is determined that the message processing lines are not selected in the order of reception, the selection unit performs processing for selecting the same line for messages having the same transmission source based on the received message transmission source. For example, by converting a code representing a transmission source into a numerical value and performing processing based on the remainder when the converted result is divided by the number of lines, the same line can be selected for messages having the same transmission source. Since a plurality of messages are sequentially processed in each line, in this case, if the messages processed in that order are sent to the other party, the transmission source can guarantee the transmission order of the same messages. When there is no need to guarantee the message transmission order, the message processing lines are selected in the order of reception, so that the message processing is distributed to each line.

  In another aspect, the present invention provides a transmission method corresponding to the transmission system described above. In this transmission method, a received message is processed by a line selected from a plurality of processing lines and then output to the destination. The procedure for specifying the source of the received message and the message are processed. A procedure for acquiring control information for selecting a line to be selected, a procedure for determining whether or not to select a message processing line based on the order of reception, and a determination that a message processing line is not selected in the order of reception In the case, the message having the same transmission source includes a procedure for performing processing for selecting the same line based on the transmission source of the received message.

  In still another aspect, the present invention provides a program for causing a computer to execute such a procedure, and a computer-readable medium storing the program.

  By adopting such a configuration, according to the present invention, the message transmission order can be simply assured as necessary while performing distributed processing of messages. As a result, electronic commerce can be performed quickly and smoothly.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In this embodiment, the present invention is embodied as a transmission system for exchanging messages between an ordering side and an order receiving side.

  As shown in FIG. 1, in this transmission system, a processing device 1 for processing a message is arranged between systems 101, 102 and 103 on the ordering side and systems 201, 202 and 203 on the order receiving side. . The processing device 1 is connected to a plurality of systems 101, 102, and 103 on the ordering side via a communication line 301. Further, the processing apparatus 1 is connected to a plurality of systems 201, 202, and 203 on the order receiving side via a communication line 302. Each system 101, 102 or 103 on the ordering side and each system 201, 202 or 203 on the order receiving side may be of the same company or organization, or may be of different companies or organizations. For convenience, in FIG. 1, the system is classified as the ordering side or the ordering side, and the communication line is also divided into two. It does not indicate the need to divide.

  The communication lines 301 and 302 that connect the order-side system 101, 102, or 103 and the order-receiving system 201, 202, or 203 and the processing apparatus 1 can use the Internet or an intranet. Here, it is assumed that a TCP / IP network is used, and FTP is used as an application protocol for transmitting a message. For example, a plurality of EDI messages are collectively described in one file, and the file is transmitted.

  The processing device 1 can be realized by one or a plurality of general-purpose computers. FIG. 2 shows an example in which the processing apparatus is realized by a single computer. In order to perform communication using FTP, a communication program 2 such as an FTP server program or FTP client program operates on the computer 401. Here, the communication program 2 is stored in an HDD (Hard Disk Drive) 402. The HDD 402 is connected to a CPU (Central Processing Unit) 404 through a bus 403. A ROM (Read Only Memory) 405, a RAM (Random Access Memory) 406, a communication interface 407, and a communication interface 408 are also connected to the bus 403. When the computer 401 is activated in accordance with a program instruction stored in the ROM 405, the CPU 404 reads the communication program 2 file from the HDD 402 and operates the communication program 2 on the RAM 406. The CPU 404 communicates with an external network device in accordance with a command from the communication program 2. A communication interface 407 or 408 is used for the communication. The communication interfaces 407 and 408 are connected to the communication lines 301 and 302, respectively. The communication interface 407 is used for communication with the ordering systems 101 to 103, and the communication interface 408 is used for communication with the order receiving systems 201 to 203. Use.

  When the processing device 1 receives a message from the order-side system 101, 102, or 103 or the order-receiving system 201, 202, or 203, the processing device 1 performs processing corresponding to the message and then outputs the received message to the transmission destination.

  In order not to cause a failure due to a delay in message transmission, the processing apparatus 1 is provided with a plurality of processing lines L as schematically shown in FIG. The processing device 1 distributes the received message to the selected processing line L, distributes the processing, performs subsequent processing by means 4 provided at the subsequent stage of the processing line L, and then outputs the received message to the transmission destination To do. For example, as subsequent processing, a message is distributed for each transmission destination, or a plurality of messages are integrated into one.

  The processing line L for processing a message can be prepared in software or hardware. When the processing apparatus 1 is realized by a single computer, a plurality of processing lines L can be prepared in software by appropriately distributing resources such as CPU processing time and memory. Further, when the processing apparatus 1 is realized by a plurality of computers, a plurality of processing lines can be prepared in hardware by using any one computer as one processing line. Further, by combining the two, a plurality of processing lines may be prepared for each of the plurality of computers so as to secure more processing lines.

  The ordering side system and the ordering side system exchange various messages such as request for quotation, reply to quotation, order information, order confirmation information, delivery date confirmation information, and delivery date reply information via such communication lines and processing devices. . The message includes not only those directly related to the commercial transaction but also a message notifying the achievement or news.

  The person in charge inputs information necessary for these messages from the terminals connected to the order-side systems 101, 102, and 103 and the order-receiving systems 201, 202, and 203, and confirms the contents of the messages on the terminals. To do. For example, when the person in charge inputs order information from the terminal 101A connected to the system 101 on the ordering side, the system 101 on the ordering side transmits the message. Such ordering systems 101 to 103 can also be realized using a computer. FIG. 3 shows an example in which the ordering system is realized by a general-purpose computer. The computer 501 includes a bus 502, and a CPU 503, a RAM 504, a ROM 505, an HDD 506, and the like are connected via the bus 502. In addition to these devices, communication interfaces 507 and 508 are also connected to the bus 502 for communication with external devices. The terminal 101A of the person in charge is connected to the communication interface 507 via the company's LAN (Local Area Network) 509. The HDD 506 stores a business database 510 and stores a business application 511. The business database 510 stores business data regarding estimates, orders, and the like. The CPU 503 reads the business application 511 from the HDD 506 and operates it on the RAM 504. The CPU 503 accesses the business data stored in the business database 510 in accordance with a command from the business application 511. Business data is often created in a company-specific format. When a standard format is used for EDI message transmission, conversion from a specific format to a standard format is necessary. For this purpose, the HDD 506 also stores a translator program 512. The CPU 503 reads the program 512 from the HDD 506 and operates it on the RAM 504. The CPU 503 reads business data from the business database 511 and changes the format of the data to a standard format in accordance with a command from the translator program 512 to create an EDI message. On the other hand, in the order-receiving systems 201 to 203, the standard format is converted into the company-specific format by the translator program.

  When it is necessary to send the created EDI message, the ordering system 101 accesses the communication program 2 on the processing apparatus 1 immediately or at an appropriate time. When the computer 401 operates in accordance with the communication program 2, here, an FTP server command, the processing apparatus 1 includes a protocol interpreter 31 and a data transfer unit 32 as shown in FIG. The protocol interpretation unit 31 manages data transfer by the data transfer unit 32 in accordance with an instruction from the access source. When accessing the communication program 2 on the processing apparatus 1, the order-side system 101 transmits authentication information including a user name and a password to the FTP server in order to connect to the control connection. When the authentication is normally performed, the protocol interpreting means 31 establishes a data connection with the ordering system 101. The ordering system 101 transmits a message through the data connection, and the data transfer means 32 receives the message. In this embodiment, a message is transmitted to the processing device 1 by transmitting a file storing a plurality of EDI messages. When a file is transmitted from the ordering system 101, the file is divided into a plurality of packets. A header is added to each packet according to the TCP / IP protocol stack. The computer 401 uses the header to restore the file from those packets. Then, the CPU 405 of the computer 401 acquires a message from the file.

  When the EDI message is received, the processing device 1 performs processing corresponding to the message and transmits the processed message to the destination specified by the message in the procedure shown in FIG. Select L. When the processing device 1 is realized by a computer, the program 5 is used to control selection of the processing line L. In the example of FIG. 2, the program 5 is also stored in the HDD 402. The program 5 cooperates with hardware such as the CPU 404 and the memory of the computer 401, and after the message is received (S1), causes the computer 401 to execute a method including steps S2 to S6. At this time, the computer 401 functions as the specifying unit 6, the acquiring unit 7, the determining unit 8, and the selecting unit 9 in FIG.

  First, the specifying unit 6 specifies the transmission source of the received message based on the authentication information (S2). The transmission source is, for example, a company to which the login user belongs. Here, as shown in FIG. 5, the user and the company code are associated in advance by a table. The table is stored in the storage means of the computer 401. For example, as shown in FIG. 2, the table may be stored in the HDD 402 as a partner master table 409. The specifying unit 6 specifies the company code corresponding to the login user by referring to this.

  When the company code is specified, the specifying unit 6 acquires a post ID representing the type from the received message. The type is specified by the person in charge of the ordering party, and includes the type of business that uses the message. FIG. 6A shows an example of the format of the EDI message. In this example, in addition to the post ID, the message includes a record classification, a transmission source code, a transmission destination code, and the like. The message can be divided into a header record and a data record, and the record classification indicates whether the record is a header or data. The transmission source code and the transmission destination code represent codes specific to the transmission source and the transmission destination of the message, respectively. The message is transmitted to the order receiving system corresponding to the transmission destination code.

  When the post ID is acquired, the specifying unit 6 edits the header 601 of the received message as shown in FIG. 6B, and adds data processing management information 602 including the company code, post ID, and processing date and time.

  When the management information 602 is added to the header 601 of the received message, the acquisition unit 7 acquires control information for selecting a line for processing the message (S3). For this purpose, the acquisition means 7 extracts the company code and post ID from the management information 602, and refers to a table associating the company code, post ID, business code and test category as shown in FIG. This table can be stored in the HDD 402 of the computer 401 as the information management master table 410 as shown in FIG. The business code is a code indicating the type of business to be handled and the type of data to be transmitted. For example, the business code represents items such as orders, order changes, order cancellations, performance reports, and news. In the example of FIG. 7, the business code “X” corresponds to order, order change, and order cancellation, and “Y” corresponds to the result report and news. The test category indicates whether the received message is for test transmission, for actual transmission, or for parallel production transmission.

  In this embodiment, by referring to the table 410, the acquisition unit 7 acquires the business code and test classification corresponding to the company code and post ID as control information. Then, the acquisition means 7 edits the header 601 of the received message and adds the control information 603 as shown in FIG. 6C.

  When the control information 603 is added to the header 601 of the received message, the determination unit 8 determines whether to select message processing lines in the order of reception based on the control information (S4). For this purpose, the determination means 8 refers to a table associating the program ID, business code, test category, start line number, end line number, and line distribution method as shown in FIG. This table can be stored in the HDD 402 of the computer 401 as a distribution master table 411 as shown in FIG. The program ID is an ID for identifying a program that processes a message. The message is processed by the program identified by this program ID. The start line number is the number of the line where distribution of the message is started. The end line number is the number of the line that finishes distributing the message. The line distribution method indicates whether or not the round robin method is used for line distribution for the message, and is given as a binary value, for example. In the example of FIG. 8, “0” indicates that the round robin method is used, and “1” indicates that the round robin method is not used. When line distribution is performed using the round robin method, message processing lines L are selected in the order of reception. The judging means 8 refers to such a table stored in the storage means of the computer, specifies the line distribution method corresponding to the received message, and determines whether or not to use the round robin method. Further, the program, start line number, and end line number corresponding to the message are specified.

  When it is determined that the round robin method is used, the selection unit 9 selects the line L for processing the message in the order of reception (S5). When a plurality of messages are received by receiving a single file in which a plurality of messages are described, the order of reception of these messages may follow the order defined in the description of the file.

  For example, if the start line number is 1 and the end line number is 3, the line L for processing each message for the sequentially received messages is the first, second, third Selected in order. If the round robin method is further used after the third is selected, the first line is selected for the received message, and the same selection is repeated thereafter. If the start line number is 2 and the end line number is 4, the second, third, and fourth are selected in this order.

  On the other hand, when it is determined that the round robin method is not used, the selection unit 9 performs processing for selecting the same line for messages having the same transmission source based on the reception source of the received message (S6). Therefore, the selection means 9 can select the processing line L based on the remainder when the company code representing the transmission source is converted into a numerical value and the converted result is divided by the number of lines. For example, if the number of lines is 2 and the company codes of the three messages are “0020000”, “00020001”, and “0002000A”, the selection unit 9 has the lowest rank “0” and “1” among the company codes. ”And“ A ”are extracted. If “0” is represented by a character code, 0x30 [48], “1” is 0x31 [49], and “A” is 0x41 [65]. Therefore, the remainder when these are divided by the number of lines is obtained. In the first case, the calculation is 48/2, so the remainder is 0. In the second case, since the calculation is 49/2, the remainder is 1. In the third case, the calculation is 65/2, so the remainder is 1. If the remainder is 0, the selection means 9 selects the first line as the line L for processing the message. If the remainder is 1, the second line is selected as the line L for processing the message. In such a calculation, when the company code is the same, the remainder always has the same value, so the same line is selected for messages from the same source.

  For example, it is assumed that four messages A1, A2, B1, and B2 having different times required for processing are transmitted from the systems 101 and 102 on the ordering side and received by the processing device 1 in this order. Messages A1 and A2 are messages from the system 101 to the order receiving system 201, and messages B1 and B1 are messages from the system 102 to the order receiving system 202. In FIG. 9, the time required for processing each message A1, A2, B1 or B2 is represented by the length of the arrow, and the time of reception thereof is represented by an arrowhead.

  FIG. 10 shows the time course of processing for the case where processing lines are selected in a round robin manner for all these messages, and FIG. 11 shows the time course of processing for cases where processing lines are selected according to the present invention. In FIG. 10 and FIG. 11, any number of the four lines for processing these messages is a number from 1 to 4, and the processing time of each message is represented by the length of the arrow. Furthermore, the start time of these processes is indicated by arrowheads and the end of the process is indicated by arrowheads.

  In the example of FIG. 10, the messages A1, A2, B1, and B2 are processed in parallel on the first, second, third, and fourth lines, respectively, and the messages A2, B1, A1, and B2 are in order. The process is finished. These messages are transmitted from the processing apparatus 1 to the systems 201 and 202 in that order after the processing by the subsequent means 4 is performed. In the system 202, since the messages are received in the order of the messages B1 and B2, there is no problem in the transaction even if these messages correspond to the order and the order cancellation. However, in the system 201, the messages are received in the order of the messages A2 and A1, and the transmission order and the reception order from the system 101 are different. If this message does not correspond to a performance report or news but corresponds to an order or order cancellation, the transaction will be hindered.

  On the other hand, in the example of FIG. 11, the messages A1, A2, B1, and B2 are processed in the first, first, third, and fourth, respectively. For example, the messages A1 and A2 correspond to ordering and order cancellation, and it is determined that a processing line is not selected for these messages in a round robin manner. The messages B1 and B2 correspond to performance reports and news, and it is determined that a processing line is selected in a round robin manner for these messages. As a result, messages A1 and A2 having the same transmission source are sequentially processed on the same processing line, and messages B1 and B2 are processed in parallel on different processing lines. For this reason, the processing of the four messages ends in the order of messages B1, A1, B2, and A2. In this case, even if processing is distributed, the transmission order from the system 101 and the reception order in the system 201 are the same. When electronic commerce is performed, the order in which transaction information is generated is determined chronologically in nature, so that if the sender selects the same line for the same message, there is no problem in the transaction. Moreover, since it can acquire at the reception time of the processing apparatus 1 if it is a transmission source, it becomes possible to perform a quicker and simple process rather than using other information.

  As described above, in the transmission system and method according to the present embodiment, it is possible to simply guarantee the message transmission order as necessary while performing queue processing to eliminate a queue for a large number of transactions. As a result, electronic commerce can be performed quickly and smoothly.

  In order to guarantee the order of messages, messages from other senders may be processed by the processing line L selected for a certain sender. Further, the processing line may be included in a processing line selected by the round robin method. Even if other source messages or messages that do not require order guarantee are processed on the processing line, the order of the target messages need not be changed. However, there is a possibility that the burden given to the processing line becomes uneven among the processing lines. For example, when the burden on some processing lines becomes extremely large, such as when a large number of messages are received from the same sender in a short time, the processing lines are temporarily selected from the processing line selected by the round robin method. You may make it remove.

In such a case, as shown in FIG. 12, the processing apparatus 1 can further include a processing line management means 10. The processing line management unit 10 manages the processing line selected when it is determined to select the processing line of the message in the order of reception based on the selection result of the selection unit 9.
When the computer 401 is caused to function as the processing line management means 10, a line management table 412 is also arranged in the HDD 402 of the computer 401 as shown in FIG. The line management table 412 is a table for managing lines to be selected by the round robin method. FIG. 14 shows an example of the line management table. In this example, the actual line number is associated with the assigned number. Here, the actual line number is a number unique to each line assigned to all the processing lines. The assigned number is an identification number assigned to a line to be selected by the round robin method. When selecting by the round robin method, the selection means 9 identifies a processing line using this allocation number. In the case of the round robin method, a processing line without an assigned number is not selected. In order to remove some processing lines from the processing lines selected by the round robin method, the line management table 412 may be edited.

  This editing can be performed after step S6, for example, as shown in FIG. After step S6, the CPU 404 of the computer 401 estimates the load of the selected processing line according to the instruction of the processing program 2 (S7). This estimation can be based on previous selection results for that processing line. For example, from the selection result, the number of messages processed in the processing line and the total data length may be estimated, and the burden may be determined based on the estimation. After calculating the processing line burden, the CPU 404 compares the calculated value with a predetermined threshold value (S8). If the load on the processing line is equal to or less than the threshold value, the processing is terminated. If the burden on the processing line is larger than the threshold value, the line management table is edited to remove the processing line from the lines to be selected by the round robin method (S9). For example, the assigned number assigned to the processing line is deleted, and other assigned numbers are changed as necessary. By doing in this way, possibility that a burden will concentrate on a part of processing line can be reduced.

  Also, when the same sender is scheduled to send a large number of messages that need to be guaranteed in order, the processing lines for processing those messages are removed from the processing lines that are selected in advance by the round robin method. You may do it. In this way, when processing lines are secured in advance to process some messages, the processing line management means 10 manages the processing lines to be selected by the round robin method according to the burden of the processing lines. Is preferred. Even if a large number of messages that need to be guaranteed in order are scheduled to be constantly received from the same source, the number of messages received from the source may actually be temporarily reduced. In such a case, the utilization efficiency of the processing line is reduced as a whole. Therefore, the burden on the processing line is estimated. The burden may be estimated every time a message is received from the transmission source or periodically. If the burden on the processing line is smaller than a predetermined threshold value, the processing line management means 10 includes the processing line in the processing line that is selected by the round robin method. For example, an assignment number is assigned to the processing line in the line management table 412. Thereby, it is possible to prevent the use efficiency of the entire processing line from being lowered. If the load on the processing line is equal to or greater than the threshold value, it is as planned, so that the processing line that is reserved in advance is not included in the processing line that is selected by the round robin method. Even when the processing line secured in advance is included in the processing line selected by the round robin method, the processing is temporarily effective. For example, when a processing line burden is estimated after assigning an assigned number to a previously secured processing line, if the estimated value is equal to or greater than a threshold value, the processing line management means 10 determines that the processing line is round-robin. Remove from the processing line selected by the method. The threshold used when removing a reserved processing line from the processing line selected by the round robin method is different from the threshold used when the processing line is included in the processing line selected by the round robin method. Also good.

  In the above-described embodiment, FTP is used as an application protocol for exchanging messages. However, the present invention is not limited to this.

  Further, it is not necessary to make a communication program such as an FTP server program separate from a program for controlling selection of a processing line. A single program having both functions may be used.

  When a program for controlling the selection of a processing line is provided or distributed, the program is stored in a computer-readable recording medium such as a CD-ROM or DVD-ROM, or an electric communication such as the Internet. It may be transmitted through a line.

  The transmission system and method according to the present invention are capable of simply assuring the transmission order of messages to the other party of the transaction as needed while distributing and processing the messages received from one of the transaction parties. It is useful in transmission systems for electronic commerce between companies.

The figure which shows schematic structure of the transmission system in embodiment of this invention The figure which shows the hardware constitutions of a processing device Diagram for explaining the hardware configuration of the ordering system Flowchart for explaining the transmission method of the present invention The figure which shows the table which correlates user code and company code The figure which shows an example of a format of an EDI message The figure which shows the table which correlates company code, post ID, business code and test classification The figure which shows the table which correlates program ID, business code, test classification, start line number, end line number, and line distribution method Diagram showing message reception and length of time required for processing The figure which shows the time course of processing when selecting a processing line by round robin method for all messages The figure which shows the time passage of the process at the time of selecting a process line according to this invention with respect to several messages Functional block diagram for explaining another configuration example of the transmission system The figure which shows the hardware constitutions of the processing apparatus which concerns on another structural example. The figure which shows an example of a line management table The flowchart for demonstrating the procedure of the transmission method which concerns on another structural example. Functional block diagram showing a schematic configuration of a transmission system that selects a processing line in a round-robin manner for all messages

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Processing apparatus 2 Communication program 4 Subsequent means 5 Control program 6 Specification means 7 Acquisition means 8 Judgment means 9 Selection means 10 Processing line management means 31 Protocol interpretation means 32 Data transfer means 101, 102, 103 Order side system 201, 202, 203 Order receiving system 301, 302 Communication line L Processing line

Claims (6)

A transmission system that processes a received message on a line selected from a plurality of processing lines and outputs the processed message to the destination.
A means of identifying the source of the received message,
Means for obtaining control information for selecting a line for processing the message;
Means for determining whether or not to select message processing lines based on the received information, and if it is determined that message processing lines are not selected in the order of reception, select the same line for messages with the same source A transmission system comprising selection means for performing processing to be performed based on a source of a received message.   The said selection means converts the code | symbol showing a transmission source into a numerical value, and performs the process which selects the same line for a message with the same transmission source based on the remainder when the converted result is divided by the number of lines. Transmission system. A transmission system that processes a received EDI message on a line selected from a plurality of processing lines and outputs the processed EDI message to a destination thereof.
A first table associating a company code, a post ID indicating a type of EDI message, a business code indicating a type of business to be handled and a type of data to be transmitted, and a test category;
A second table associating business codes, test categories, IDs of programs that process EDI messages, and line distribution methods;
Means for identifying the company code of the source of the received EDI message;
Means for obtaining from the first table the post ID for the received EDI message and the business code and test classification corresponding to the identified company code;
The line distribution method corresponding to the control information including the acquired business code and test classification is specified by referring to the second table, and the processing line of the received EDI message is round-robin in accordance with the specified line distribution method. A means for determining whether or not to select, and a process for selecting the same line for a message having the same transmission source when it is determined not to select a processing line for the EDI message in a round robin manner, based on the transmission source of the EDI message Transmission system with means to perform A transmission method for processing a received message on a line selected from a plurality of processing lines and outputting the processed message to the destination,
Steps to identify the source of the received message,
A procedure for obtaining control information for selecting a line for processing the message,
The procedure for determining whether or not to select message processing lines based on the order of reception, and if it is determined not to select message processing lines in the order of reception, select the same line for messages with the same source A transmission method comprising a procedure for performing processing to be performed based on the source of the received message.   A computer-readable recording medium recording a program for causing a computer to execute the procedure of the transmission method according to claim 4.   The program for making a computer perform the procedure of the transmission method of Claim 4.

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