JP2001022694A - Method and device for sending information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the load and communication quantity on a server device side by storing information dynamically generated at a client request on the server side together with a call argument of a used information generating means to a server device, and sending the execution result when the same argument is received in 2nd and the succeeding executions. SOLUTION: The information dynamically generated at the client request on the server side is stored to the server device together with the call argument of the information generating means used for generating the information. When the same argument is received in the 2nd and the succeeding executions, the execution result is retrieved and sent. Of this device, a client terminal device 110 sends a request 200 to an information transmitting server device 120. The information transmitting server device 120 acquires an argument 210 oriented to a page generating server 120 which is included in a request 200. Then the information transmitting server device 120 retrieves the obtained argument 210 by referring to a page management table 400 so as to check whether or not the same argument has been received in the past.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmitting method for generating and transmitting dynamic information on a server device side in response to a request from a client in an environment where a client terminal device and a server device are connected via a network. And an information transmission device.

[0002]

2. Description of the Related Art On a server side, CGI (CGI) is used as a page generation means for generating a dynamic page in response to a client request.
There is a "method and apparatus for processing a servlet" (Sun Microsystems) disclosed in JP-A-10-133892. In both cases, when the generated page information is transmitted to the client, the content is lost.

There is a proxy server as a conventional technique for improving responsiveness for a client to receive requested information faster. This means that static information on the Internet that has been accessed once is cached on a server on the intranet, and when a client on the intranet requests reception of the data on the cache, it accesses the server on the Internet. Rather, it is a technology that reuses information cached on servers on the intranet, and is described in detail in "Nancy J. Yeager, Web Server Complete Technical Description, Nikkei Business Publications, p. 194-222".

[0004]

Since the page generation means in the conventional server apparatus loses information dynamically generated in response to a request from the client at the same time as transmitting the information to the client, the same request is thereafter received from the client. In such a case, even if the same content is transmitted as a result, the page generating means must be executed as in the first reception, and there is a problem that the load on the server side increases and the responsiveness decreases. are doing.

[0005] In the conventional proxy server, the information to be cached is guaranteed to be always the same when the same request is sent, as represented by browsing documents on the network. Only static information. On the other hand, among pages dynamically generated by the server device using the page generation means in response to a client request, information included in an external program such as a database may be referred to from the page generation means. Since the information held by the external program may be updated depending on the access time, when the external program call is included in the execution process of the page generating means, even if the request received from the client is the same, the The execution results are not always the same. Furthermore, the page generation means in the conventional server device determines whether or not to call an external program in the process of dynamically generating information in response to a request passed from the client, that is, an execution result using the same request. However, it does not have a means for distinguishing whether or not there is a possibility that it differs depending on time. Therefore, the conventional proxy server has a function of dynamically generating information using the page generating unit on the server device side.
Since it is not guaranteed that the result executed using the same request is always the same, the server side cannot store any dynamically generated information using the page generation means. There is a problem that caching is not possible ("Nancy J. Yeager, Web server complete technical description, Nikkei BP
Co., p.223 ").

SUMMARY OF THE INVENTION An object of the present invention is to improve the responsiveness by reducing the load and the communication amount on the server device side, and particularly to quickly receive static information that has been executed once and whose execution result does not change with time. It is an object of the present invention to provide an information transmitting method and an information transmitting device capable of receiving the latest information with respect to dynamic information whose execution result may change with time.

[0007]

In order to achieve the above object, the present invention provides a server for transmitting information based on a request transmitted from a client to the client, and an information generator for generating information to be transmitted to the client. An information transmission method in an information transmission system comprising: means for receiving, by the server, a request transmitted from the client; and transmitting an argument corresponding to the received request from the server to the information generation means. And dynamically generating information using the argument given from the server by the information generating means and returning the information to the server. Storing the information generated by using the arguments in association with each other; Searching for the stored argument to determine whether the argument corresponding to the new request has been received in the past; and Reading the information generated using the stored arguments and transmitting the information from the server to the client.

[0008] The step of storing the argument given to the information generating means and the information generated using the argument in association with each other includes the step of generating the file name using the argument and the file name of the file storing the argument. At least a part of the file name of the file storing the stored information has the same name, and an attribute indicating that it is a file storing an argument and a file storing information generated using the argument are additionally provided. It is good to add the attribute which shows that it is.

The present invention also provides an information transmission method in an information transmission system comprising: a server for transmitting information based on a request transmitted from a client to the client; and information generating means for generating information to be transmitted to the client. Receiving, by the server, a request transmitted from the client; and, for an argument corresponding to the request received first by the server, information generated by the information generating means when the argument is given. Checking whether or not is fixed, and giving an argument corresponding to the first received request from the server to the information generating means, and dynamically generating information using the argument, the server And if the fixed is detected in the step of checking whether the argument is fixed, the argument and the argument A step of storing in association with the information generated by the information generating unit using, by the server, when receiving a new request from the client by searching the arguments are the stored,
Checking whether the argument corresponding to the new request is an argument whose information generated using the argument is fixed; and determining whether the information generated using the argument is fixed. Reading the information generated by using the stored arguments, and transmitting the information from the server to the client.

The argument corresponding to the request received for the first time is
If the information generated by the information generating means is an unfixed argument when the argument is given, the argument is stored as an argument that does not require generation information storage, and the same argument is stored next time. When received, without performing a check whether the information generated using the argument is fixed, to give the argument to the information generating means to dynamically generate information,
The generated information may be transmitted from the server to the client.

Further, the step of checking whether or not the information generated by the information generating means is fixed is a step of checking whether or not to call an external program when the information generating means generates the information. In this way, it is preferable to check whether or not it is fixed.

[0012] The present invention is also an information transmitting apparatus for transmitting information based on a request transmitted from a client to the client, comprising: means for receiving a request transmitted from the client; Means for acquiring the argument, information generating means for dynamically generating information using the argument, and storing the argument given to the information generating means and the information generated using the argument in association with each other. Storage means, and when a new request is received from the client, by searching for an argument stored in the storage means, it is determined whether the argument corresponding to the new request has been received in the past. Means for checking and, if received in the past, means for reading out information generated using the stored argument and transmitting the information to the client. And it features.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. First, the first embodiment of the present invention,
This will be described in detail with reference to FIGS.

FIG. 1 is a flowchart showing a processing procedure of an information transmitting method according to the present embodiment, and shows a schematic configuration of an information transmitting server device for executing the information transmitting method. In FIG. 1, 110 is a client terminal device, 120 is an information transmission server device, and 130 is a page generation server device. The page generation server device 130 includes a unit that dynamically generates page information based on a request transmitted from the client terminal device 110 and transmits the generated information to the client terminal device 110 via the information transmission server device 120. For example, Web Page Gene, a product of Hitachi, Ltd.
rator is applicable. Client terminal device 110, information transmission server device 120, page generation server device 13
0 is connected by a network.

Prior to the description of the processing procedure of each device, data used in the processing will be briefly described (see FIG. 3 for details).
To FIG. 6). The template file 300 of the page generation server device 130 is data used when the page generation program is executed (step 131). The client terminal device 110 includes the name of the template file to be used in the request 200, Transmit to device 120. The data structure of the request 200 will be described later with reference to FIG. 2, and an example of the template 300 will be described with reference to FIG.

The page management table 400 included in the information transmission server device 120 stores an argument (argument included in the request 200) transmitted to the page generation server device 130 and a file storing an execution result of the page generation program using the argument. It is a table that associates the name with the name.
It has an argument "and a" file title "storing the argument. The file title refers to a part of the file name excluding the extension. The page management table 4 uses the same title for the file and the file name for storing the execution result based on the argument, and differs only in the extension.
00 will be described later with reference to FIG.

The argument data 500 included in the information transmission server device 120 stores the received argument in the page management table 4.
00 is stored in a file using the file title shown in FIG. An example of the argument data 500 will be described later with reference to FIG. The page data 600 included in the information transmission server device 120 is obtained by storing the call result (page) of the page generation server device 130 based on the received argument in a file using the file title in which the argument is stored. The page data 600 will be described later with reference to FIG.

The processing procedure of the information transmission method performed by the information transmission server apparatus 120 will be described below together with the processing procedure of the client terminal apparatus 110 and the page generation server apparatus 130. Note that a dotted line 1200 in FIG. 1 indicates a processing group that is changed in a second embodiment described later, and details thereof will be described in the second embodiment.

In FIG. 1, a client terminal device 11
0 transmits a request 200 including the template file name to the information transmission server device 120 (step 111).
The information transmission server device 120 receives the request 200, and includes the page generation server 13 included in the request 200.
An argument 210 to 0 is obtained (step 121).

The information transmission server device 120 checks whether or not the same argument has been received in the past, in order to check whether or not the argument has been received in the past.
0, the acquired argument 210 is searched (for details of the argument search processing 700, see steps 701 to 7 in FIG. 7).
05 will be described later). Next, the information transmission server device 120
Checks whether the execution result of the argument search processing 700 is "False" (step 122).

The information transmission server device 120 executes step 1
22, the execution result of the argument search processing 700 is "Fals
In the case of "e", the argument 210 included in the request 200 received from the client terminal device 110 is a new argument that has not been received in the past, so that new argument data is created and added to the argument data 500 ( The details of the new argument data creation processing 800 are described in steps 801 to 801 in FIG.
804). Thereafter, the information transmission server device 12
0 sends the new argument 210 to the page generation server 130 (step 124).

The page generation server device 130 receives the argument 21
0, the template file specified by the argument 210 is searched from the template file 300,
The page generation program is executed (Step 131).
The page generation server device 130 transmits an execution result (page) 600 of the page generation program to the information transmission server 120 (step 132).

The information transmission server device 120 receives the execution result (page) 600 of the page generation program, creates new page data, adds it to the page data 600,
The new page is transmitted to the client (for details of the new page data processing 900, see steps 901 to 9 in FIG. 9).
02).

The information transmission server device 120 executes step 1
22, the execution result of the argument search processing 700 is "Fals
If not e ", the title of the file storing the argument 210 (excluding the file name extension) is obtained as the execution result of the argument search processing 700 (step 123). 120 generates a file name storing the execution result from the acquired file title, searches for the corresponding page data by referring to the page data 600, and transmits the search result to the client terminal device 110. Execution result search processing 10
00 will be described later in steps 1001 to 1003 of FIG. 10).

The client terminal device 110 receives the newly created or already stored page data transmitted from the information transmitting server device 120 and displays it on the display (step 112).

FIG. 2 shows that in the processing step 111 of the client terminal device 110, the information transmission server device 1
FIG. 5 is a diagram showing a data structure of a request 200 transmitted to the request 20 and a page generation server call argument 210 included in the request 200. In FIG. 2, reference numeral 201 denotes a “network address” of the information transmission server device 130 indicating a destination of the request 200. Reference numeral 202 denotes a “program name” of the information transmission server device 120, which is first called from the client terminal device 110, and the program includes a description for calling the page generation server 130. Reference numeral 210 denotes a “page generation server call argument” transmitted from the program 202 to the page generation server device 130, and includes data 211 to 213 below. Reference numeral 211 denotes designation of a template file name to be used, and reference numerals 212 to 213 denote setting of variable names and values included in the designated template file 211.

In the example shown in FIG. 2, a template file named "page1.htm" is used, and variables "apple" and "fruit" included in the template file are assigned values "
When "5" and the value "melon" are set to execute the page generation program, "page generation server call argument" is shown.

FIG. 3 is a diagram showing an example of the template file 300 included in the page generation server device 130. The template file name shown in Fig. 3 is "page1.ht
m ”(211-a) and“ apple ”(2
12-a) and "fruit" (213-a). "Page generation server call argument" 210 shown in FIG.
Is transmitted to the page generation server apparatus 130, a page in which “5” and “melon” are embedded at the position where each variable is described is generated and stored as page data 600 (details will be described later with reference to FIG. 6). Do).

FIG. 4 is a diagram showing an example of the page management table 400 of the information transmission server device 120.
In FIG. 4, reference numeral 210 denotes the “page generation server call argument” of FIG. 2, and reference numeral 401 denotes “storage file title” indicating the title of the file name storing the page generation server call argument. As described with reference to FIG. 1, the “storage file title” is used when creating the file name of the file storing the argument 210, and the file name of the file storing the page generation server call result by the argument 210. Also used when creating a.

In the example shown in FIG. 4, "template = page1.htm
& apple = 5 & fruit = melon ”is stored in association with a page generation server call argument“ pg1219 ”which is a file title for storing a page generation server call result by the argument.
In the example shown on the line, the argument 210 is “template = page1.h
tm & apple = 7 & fruit = strawberry ”, and the template name to be specified is the same as the previous example, but the value of the variable is different, so the file title“ pg
0304 ”is assigned.

FIG. 5 is a diagram showing an example of the argument data 500 of the information transmission server device 120. The argument data 500 is obtained by storing the argument 210 with a name in a file. 401-a is a file name in which the page generation server call argument 210 is stored.
The file name is created by adding an extension (“arg” in the present embodiment) representing the argument data to the file title associated with the argument in the page management table 400 of FIG. The argument data shown in FIG. 5 is stored in a file named “pg1219.arg” obtained by adding an extension representing the argument data to the file title “pg1219” shown in the first line of FIG.

FIG. 6 is a diagram showing an example of the page data 600 of the information transmission server device 120. The page data 600 stores a page generated as a result of calling the page generation server in a file with a name. 401-b is a file name in which the page data 600 is stored. This file name is created by adding an extension representing the page data (“hpg” in the present embodiment) to the file title associated with the argument in the page management table 400, similarly to the argument data. You.

The page data shown in FIG. 6 is the result of calling the page generation server of the argument data shown in FIG. 5, and the file name is also included in “pg1219” which is the file title in which the argument data of FIG. 5 is stored. And “pg1219.hpg” with an extension indicating page data. The page data shown in FIG. 6 is obtained by adding the value “5” to the variable name “apple” shown as an example of the page generation server call argument in FIG.
Is a page generated as an execution result when the page generation server is called by setting “melon” to the variable name “fruit”. Numerals 212-a to 213-a are places where variables are described in the template file example "page1.htm" shown in FIG. 3, and the values specified by the page generation server call arguments 210 are respectively substituted. I have.

FIG. 7 shows the argument 2 from the request 200 transmitted from the client 110 in step 121 of FIG.
10 is a flowchart for explaining a processing procedure of “argument search processing” 700 for checking whether or not the information transmission server apparatus 120 has called the page generation server with the same argument in the past after acquiring 10; Argument search processing 700
Has the following steps:

First, it is checked whether or not this check has been completed for all “page generation server call arguments” in the page management table 400 (step 701). Step 701
In the case where the argument search processing has not been completed for all the “page generation server call arguments” in the page management table 400, the “page generation server call arguments” acquired from the request transmitted from the client are stored in the page management table 400. (Step 70)
2).

In step 702, if the “page generation server call argument” to be checked matches the value of the item “page generation server call argument” in the table 400, the value of the matched argument item “storage file title” is changed. It is acquired (step 703). Then, the value of the acquired item “storage file title” is returned (step 70).
4).

In step 702, if the "page generation server call argument" to be inspected does not match the value of the item "page generation server call argument" in the table, the process returns to step 701, where other items included in the page management table are included. Of "page generation server call arguments" of the test.

In step 701, when the argument search process is completed for all “page generation server call arguments” of the page management table 400, the page management table 400 does not include the inspection target “page generation server call arguments”. Therefore, "False" is returned (step 705).

FIG. 8 shows a case where the result of the argument search processing 700 at step 122 in FIG. 1 is "False".
11 is a flowchart illustrating a processing procedure of a “new argument data creation process” 800 in which the information transmission server device 120 creates and stores “page generation server call arguments” acquired from a request transmitted from a client as new argument data. . The new argument data creation processing 800 has the following steps.

The page management table 40 shown in FIG.
One record is added to 0, and the received argument is written as the value of the item "page generation server call argument" of the added record (step 801). Next, a title of the file storing the received argument and the execution result based on the argument is created (for details of the new file title creation processing 1100, see steps 1101 to 11 in FIG.
05 will be described later). Next, the new file title created in the new file title creation processing 1100 is written as the value of the item “storage file title” of the record added in step 801 (step 80).
2).

A file named "(new file title) .arg" is created by adding an extension "arg" representing argument data to the new file title created in the new file title creation processing 1100 (step). 803). The argument received from the client terminal device 110 is stored in the file named “(new file title) .arg” created in step 803 (step 804). By this processing, one new argument data is added to the existing argument data 500.

FIG. 9 shows a case where the result of the argument search processing 700 at step 122 of FIG. 1 is "False".
After the information transmission server apparatus 120 transmits the new argument data 210 to the page generation server apparatus 130, the processing procedure of “new page data creation processing” 900 for creating and storing the received execution result (page) as new page data is described. It is a flowchart explaining. The new page data creation process 900 has the following steps.

The “new file title” created in the new argument data creation processing 800 shown in FIG.
A file named "(new file title) .hpg" is created by adding an extension "hpg" representing page data (step 901). The execution result (new page) of the page generation program received from the page generation server device 130 is stored in the file named “(new file title) .hpg” created in step 901 (step 902). By this processing, one new page data is added to the existing page data 600.

FIG. 10 shows that, when the result of the argument search processing 700 is not “False” in step 122 of FIG. 1, the information transmission server device 120 acquires the title of the file storing the argument data. After that, the execution result (page) is searched from the page data 600.
It is a flowchart explaining the processing procedure of "execution result search processing" 1000. New page data creation processing 1000
Has the following steps:

From the file title acquired in step 123, a file name "(file title) .hp storing the execution result of the page generation server 130"
g ”(step 1001). Next, from the page data 600,“ (file title). The page data named “hpg” is searched (step 1002). The content of “(file title) .hpg” is read and transmitted to the client terminal device 110 (step 1003).

FIG. 11 shows a new argument and a new file title for storing new page data as a result of calling the page generation server by the new argument in the new argument data creation processing 800 (FIG. 8) of the information transmission server apparatus 120. Is a flowchart for describing an example of a processing procedure of “new file title creation processing” 1100 for creating a new file title. In order to reduce the possibility of creating the same file title, in the present embodiment, the elapsed time from a certain point in time to the current time is obtained, and the file title is created using the last four digits of the elapsed time. The new file title creation processing 1100 has the following steps.

First, the elapsed time from a certain point in time to the current time is obtained, and the lower four digits of the elapsed time are extracted (step 1101). In the lower four digits extracted in step 1101, an identifier "pg" for distinguishing from a normal file
Is added to the beginning to create a new file title (step 1102). In the example shown in the first line of FIG. 4,
A new file title “pg1219” is created by adding “pg” to “1219” extracted in step 1101.

It is checked whether or not the following check for checking whether or not the new file title created in step 1102 already exists has been completed for all the “stored file titles” in the page management table 400 (step 1103). If the inspection has not been completed for all “storage file titles” in step 1103, it is checked whether the new file title matches the value of the item “storage file title” in the page management table 400 (step 1104). Step 110
4, the new file title to be checked is the item “storage file title” in the page management table 400.
If the value matches the value, the process returns to step 1101. If the new file title to be inspected does not match the value of the item “storage file title” in the page management table 400 in step 1104, step 1103
Return to In step 1103, when the inspection is completed for all the “stored file titles” in the page management table 400, the created new file title is returned (step 1105).

According to the first embodiment described above, information dynamically generated in response to a request from a client is stored together with a call argument of a page generation unit used when generating the information. When the same argument is received in the subsequent executions, the stored execution result is searched and transmitted, so that the load on the server side and the communication amount are reduced, and the responsiveness is improved. Also, the same file title is used for the file name of the file that stores the call argument of the page generation unit and the file name of the file that stores the execution result of the page generation unit based on the argument, and an extension indicating each data is used. When the server device receives an argument that has been received in the past, the server device can immediately determine the file name storing the execution result of the page generation means using the argument, and You can search for execution results to send quickly.

Next, a second embodiment of the present invention will be described with reference to FIGS.
This will be described in detail with reference to FIG.

FIG. 12 is a diagram showing a dotted line 1200 in FIG.
9 is a flowchart showing an alternative diagram of the processing performed by the information transmission server device 120 and the processing performed by the page generation server device 130, which are included in the portion enclosed by. In FIG. 1, when the process surrounded by a dotted line 1200 is replaced with the process shown in FIG. 12, a diagram showing a schematic configuration of the second embodiment of the present invention and a processing procedure of an information transmitting method is obtained.

A feature of this embodiment is that a function for checking whether or not to call an external program such as a database is added before executing the page generation program in step 131 of the page generation server apparatus 130. is there.
When the execution result of the page generation program includes the result of calling an external program such as a database, the value stored in the external program may be updated according to the execution time. Is not always the same. Therefore, when the result of calling the external program is included, the page generated by the page generation server may include dynamic information that changes depending on the execution time. In such a case, in the information transmission server apparatus 120 described with reference to FIG. 1, the “page generation server call argument” used once and the execution result of the argument are always stored in a file, and the same argument call request is issued. Is received from the client, without performing communication with the page generation server apparatus 130, searching for past execution results from the page data 600 stored in the information transmission server apparatus 120 and transmitting the result to the client terminal apparatus 110 However, there is no advantage in that even though the responsiveness is excellent, old information may be included.

In this embodiment, in order to solve this problem,
In addition to the functions of the information transmission method and the apparatus described in FIG. 1, when the page generation program is executed, the page generation server apparatus 130 checks whether or not there is a call description of an external program. Even when the execution result of the page generation program may be different due to time or the like, the argument and the execution result (new page) are not stored in the information transmitting server device 120, and the call request is not stored. Existing client terminal device 110
Is added to the processing procedure for direct transmission to. further,
The page generation server call argument that generated the page including the dynamic information is stored as an argument that does not need to be stored in the information transmission server device 120, and the next time the same argument is received, the external program in the page generation server device 130 described above is received. Since the page generation program is executed and transmitted to the client without performing the call check, the responsiveness is improved.

With the addition of this processing, the client terminal device 110 that transmits a page generation request to the page generation server device 130, if the page generation server device 130 generates a page including data that is dynamically changed, A page in which data is embedded can be received. On the other hand, if an argument for generating the same page is always requested regardless of the execution time, the communication with the page generation server apparatus 130 is not performed in the second and subsequent executions. The first execution result stored in the information transmission server device 120 can be received quickly.

The structure of the data used in the process shown in FIG. 12 is the same as the template file 30 used in FIG.
0, page management table 400, argument data 500, and page data 600. Each data structure is the same as in the first embodiment. However, data examples and description methods used in the processing of the present embodiment are described in 1400, 18
Added at 00. Template file example 140
Reference numeral 0 denotes an example of a template file including an external call description included in the template file 300 (details will be described later with reference to FIG. 17). The page management table 1800 is the page management table 4 described with reference to FIG.
00 is essentially the same as 00, but for the argument that generates a page containing dynamic information, by setting the value of the item “storage file title” to “Null”, the This point is different (details will be described later with reference to FIG. 18).

The processing procedure 1200 of the information transmission server device 120 and the page generation server device 130 for realizing the above-described functions will be described below. In step 121 of the information transmission server device 120, the page generation server call argument is acquired from the request received from the client 110, and after executing the argument search processing 700, the next step in FIG. 12 is executed.

The information transmission server device 120 checks whether or not the result of the argument search processing 700 is “False” or “Null” (step 1201). If the result of the argument search processing 700 is neither “False” nor “Null”, the information transmission server device 120 returns the file in which the argument is returned as the result of the argument search processing 700, as in FIG. The title is acquired (step 123, FIG.
1), and executes the execution result search processing 1000 (FIG. 1).
2 is not shown).

Step 12 of Information Transmission Server Device 120
01, the result of the argument search processing 700 is “False”
Or, if "Null", the information transmission server device 12
0 transmits the argument and the result 1300 of the argument search processing 700 to the page generation server device 130 (step 120).
2). The page generation server apparatus 130 receives the argument and the result 1300 of the argument search processing, searches the template file 300 for the template file specified by the argument, and checks whether there is a description for calling an external program (this external program The details of the call checking process 1500 will be described later in steps 1501 to 1506 in FIG. 15). The page generation server device 130 executes the page generation program from the received argument (step 131,
(Same as FIG. 1). Further, the page generation server device 130
Transmits the result of the external program call checking process 1500 and the execution result 1600 of the page generation program to the information transmission server device 120 (step 1203).

The information transmission server apparatus 120 receives the result of the external program call inspection processing and the execution result 1600 of the page generation program from the page generation server apparatus 130, and the result of the external program call inspection processing is “Tr”.
ue ”or“ Null ”(step 12
04). The result of the external program call check processing is “Tr”
ue "or" Null ", the argument includes an external program calling process.
0 writes the argument as an external call argument in the page management table 1800 (for details of the external call argument write processing 1700, see step 1701 in FIG. 17).
To 1704). Thereafter, the information transmission server device 120 transmits the execution result (page) of the page generation server according to the argument to the requesting client terminal device 110 (step 1205).

Step 12 of information transmission server device 120
If the result of the external program call checking process is not “True” or “Null” in 04, the argument is
Since it does not include external program call processing,
The new argument data creation process 800 and the new page data creation process 900 shown in (1) are executed, and the argument and the execution result of the page generation program based on the argument are stored in a file.

FIG. 13 is a flowchart showing step 1202 in FIG.
5 is a diagram showing a result of argument search processing 700 and a data structure of an argument 210, which are transmitted from the information transmission server apparatus 120 to the page generation server apparatus 130. 13
01 is the result of the argument search processing 700 (FIG. 7). If an argument has already been stored, the external program is called with the “storage file title” storing the argument and page data, and the first received argument. If not, "Fals
e ”,“ Null ”is entered when the argument is received for the first time and does not need to be stored because it includes external program call processing.
Although it does not seem to include the procedure of returning “Null” in FIG. 7, the page search table 1800 of FIG. 18 described later is referred to in the argument search processing 700 (FIG. 7) of the second embodiment. Therefore, "Null" may be returned. 21
0 is the page generation server call argument shown in FIG. 2 (for details, 211 to 213 in FIG. 2).

FIG. 14 shows an example of a template file including an external program call description included in the template file 300. Template file 30
In the case of “0”, there are some that include an external program call description and some that do not. The template file shown in FIG. 3 is an example that does not include an external program call description. In the first embodiment, since the page generation server device 130 does not check the type of the template file, the type of the template file does not affect the processing procedure shown in FIG.
In the second embodiment, the external program call inspection process 1500 shown in FIG.
To determine whether to store the argument and the page generation program execution result of the argument in a file, the type of the template file affects the processing result.

The description of the template file for calling the external program depends on the specification of the template file included in the specification of the page generation program.
For example, a description of a tag for calling an external program, such as "<! Exec Method = DB connection>", can be considered. In this example, the template file name is “pa” shown in 211-b.
ge2.htm ”, the template file that does not call the external program shown in FIG. 3 is attached without special distinction. However, depending on the specification, whether to call the external program by a file name other than the tag is determined. May be different.

FIG. 15 is a flowchart showing step 1202 in FIG.
In the following, a description will be given of the processing procedure of the external program call inspection processing 1500 executed by the page generation server apparatus 130 after the argument and the result 1300 of the argument search processing are transmitted from the information transmission server apparatus 120 to the page generation server apparatus 130. It is a flowchart. The external program call check processing 1500 has the following steps.

It is checked whether or not the result of the argument search processing 700 is "False" (step 1501). If the result of the argument search processing 700 is not “False”, “Null” is returned and the processing ends (step 1503).

If the result of the argument search processing 700 is "False" in step 1501, the template file specified by the argument 210 is searched from the template file 300 and read (step 150).
2). It is checked whether or not an external program call instruction is described in the template file read in step 1502 (step 1504). Step 15
In step 04, when the read instruction file contains an instruction to call an external program,
Return “True” (Step 1505) .Step 1504
If the read instruction file does not contain a call instruction for an external program,
lse ”is returned (step 1506).

FIG. 16 shows an external program call inspection process 1 in the page generation server device 130 of FIG.
After the execution of 500, the external program call inspection result transmitted from the page generation server device 130 to the information transmission server device 120 and the page generation program execution result 160
0 shows a data structure. Reference numeral 1601 denotes a processing result of the external program call check processing 1500, which is “True” when the specified template file includes an external program call, “False” when the specified template file does not include an external program call, and includes an external program call. "Null" is entered when the inspection process is unnecessary because it was known in the past execution. Reference numeral 600 denotes page data generated as a result of executing the page generation program, which is the same as that shown in FIG.

FIG. 17 shows that, in FIG. 12, the result of the external call check received by the information transmitting server device 120 from the page generation server device 130 is “True” or “Nu”.
11 is a flowchart for describing an external call argument writing process 1700 executed when “ll” is set. The external call argument writing process 1700 has the following steps.

It is checked whether or not the result of the external program call check received from the page generation server device 130 is "True" (step 1701). If the result of the external program call check is not “True”, the argument received from the client 110 is the page management table 180
Since the file has already been registered as an argument that does not require file storage, the process jumps to step 1704 described below.

In step 1701, if the result of the external program call check received from the page generation server device 130 is “True”, the client 110
Since the received argument is not registered in the page management table 1800 as a file storage unnecessary argument, one record is added to the page management table 1800, and the item of the added record “page generation server call argument”
The argument is written as the value of (step 1702). Then, “Null” is written as the value of the item “storage file title” of the record, indicating that the argument does not require file storage (step 1703).

The information transmission server device 120 transmits the execution result (page) of the page generation program received from the page generation server device 130 together with the external program call inspection result to the client terminal device 110 (step 1704).

FIG. 18 shows a case where the external call argument writing process 1700 of FIG. 17 is performed, and an argument for calling the external program during execution of the page generation program is newly added to the page management table in the state of FIG. The page management table when a record is added is shown. In the page management table 1800, the “page generation server call argument” in which the value of the item “storage file title” is “Null” indicates that the process includes calling an external program during execution of the page generation program. This indicates that the information transmission server device 120 does not need to store the argument and the execution result of the argument. This record indicates that the page generation server apparatus 130 does not need to execute the external call inspection processing 1500 for the “page generation server call argument” in the record when the same argument is transmitted from the client 110 thereafter.

According to the second embodiment, in addition to the effects of the first embodiment, only when the execution result is always the same when the page generation is executed with the same argument, the argument and the execution result are stored in the server device. For the arguments that are stored and the execution results are not always the same, the client executes the page generation process and sends the latest information every time a request is received, so the client executes once and the execution result varies depending on time. For information that does not exist, it can be received quickly, and for information whose execution result may change with time, the latest information can be received.

[0074]

According to the present invention, information dynamically generated in response to a request from a client using information generation means on the server side together with a call argument of the information generation means used at the time of generation of information is used by the server. When the same argument is received in the second and subsequent executions, the execution result is retrieved and transmitted, so that the load on the server side and the communication amount are reduced, and the responsiveness is improved.

Some of the information dynamically generated by the server using the information generating means in response to the client's request, even if the values of the arguments are the same, it is not guaranteed that the generated information is the same. (For example, information generated is not fixed, such as an execution result that differs depending on the execution time). According to the present invention, it is checked whether the information generated by the information generating means is fixed using a given argument, and if the information is fixed (that is, if the same argument, Is always the same), the argument and the information generated by the information generating means using the argument are stored, and the next time the same argument is received, the stored information is transmitted to the client. I do. For an argument whose information generated by the information generating means is not fixed, the information generating means is executed every time a request is received, and the latest information is transmitted. Therefore, the client can quickly receive information that has been executed once and whose execution result does not change with time, and can receive the latest information with respect to information whose execution result may change with time.

Further, at least a part of the file name of the file storing the call argument of the information generating means and the file name of the file storing the execution result of the information generating means according to the argument have the same name (file title).
Since the extension indicating each data is also determined, when the server receives an argument that has been received in the past, the server stores the file name storing the execution result of the information generation unit using the argument. Decisions can be made immediately and execution results sent to the client can be searched quickly.

[Brief description of the drawings]

FIG. 1 is a diagram showing a processing procedure of an information transmitting method according to the present invention and a schematic configuration of an information transmitting server device for executing the information transmitting method.

FIG. 2 is a diagram illustrating a data structure of a request transmitted from a client terminal device to an information transmission server device and a page generation server call argument included in the request.

FIG. 3 is a diagram illustrating an example of a template file included in the page generation server device.

FIG. 4 is a diagram showing an example of a page management table of the information transmission server device.

FIG. 5 is a diagram showing an example of argument data of the information transmission server device.

FIG. 6 is a diagram illustrating an example of page data included in the information transmission server device.

FIG. 7 is a flowchart illustrating a processing procedure of an argument search process of the information transmission server device.

FIG. 8 is a flowchart showing a processing procedure of a new argument data creation process of the information transmission server device.

FIG. 9 is a flowchart showing a processing procedure of a new page data creation process of the information transmission server device.

FIG. 10 is a flowchart illustrating a processing procedure of an execution result search process of the information transmission server device.

FIG. 11 is a flowchart illustrating a processing procedure of a new file title creation process of the information transmission server device, which is executed during the process of the new argument data creation process.

FIG. 12 is an alternative diagram of a process performed by the information transmission server device and a process performed by the page generation server device, which are included in a portion surrounded by a dotted line 1200 in FIG. 1, and illustrate a second embodiment of the present invention.

FIG. 13 is a diagram illustrating a result of an argument search process and a data structure of an argument transmitted from the information transmission server device to the page generation server device in the second embodiment.

FIG. 14 is a diagram illustrating a process used in the second embodiment.
FIG. 4 is a diagram illustrating an example of a template file including an external program call description, which is another example of the template file illustrated in FIG. 3.

FIG. 15 is a flowchart illustrating a procedure of an external program call checking process executed by the page generation server device in the second embodiment.

FIG. 16 is a diagram illustrating a data structure of a result of an external program call inspection process in a page generation server and a result of execution of a page generation program transmitted from the page generation server device to the information transmission server device in the second embodiment. .

FIG. 17 is a flowchart illustrating a procedure of an external call argument writing process executed by the information transmission server device in the second embodiment.

FIG. 18 is a diagram illustrating a description example of a page management table to which a new description method is added in the second embodiment, and is another example of the page management table illustrated in FIG. 4;

[Explanation of symbols]

Reference Signs List 110 client terminal device 120 information transmission server device 130 page generation server device 210 page generation server call argument 300 template file 400 page management table 500 argument data 600 page data 700 argument search process 800 new argument data creation process 900 new page data creation process 1000 Execution result search processing 1400 Template file (including external program call description) 1500 External program call inspection processing 1700 External call argument writing processing 1800 Page management table (including external program call arguments)

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yuichi Yoshida 5030 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture F-term in the Software Development Division, Hitachi, Ltd. (Reference) 5B075 KK07 ND21 PQ26 5B082 FA12 GA08 GC04 5B085 BG07 CA04 5B089 GA11 GA21 GB04 HA06 JA22 JB22 KA05 KA06 KA08 KB06 KC37 KD02

Claims (6)

[Claims] 1. An information transmission method in an information transmission system, comprising: a server for transmitting information based on a request transmitted from a client to the client; and information generating means for generating information to be transmitted to the client. A step of receiving a request transmitted from the client by the server; a step of giving an argument corresponding to the received request from the server to the information generating unit; and a step of giving from the server by the information generating unit. Dynamically generating information by using the argument, and returning the information to the server; and storing, by the server, the argument given to the information generating means and the information generated by using the argument in association with each other. And when the server receives a new request from the client, the server searches for the stored argument. Thus, a step of checking whether or not the argument corresponding to the new request has been received in the past, and if the argument has been received in the past, the argument is generated using the stored argument. Reading information and transmitting the information from the server to the client. 2. The method according to claim 1, wherein the step of storing the argument given to the information generating means and the information generated using the argument in association with each other includes the step of using the file name of the file storing the argument and the argument. At least a part of the file name of the file storing the generated information has the same name, and additionally, an attribute indicating that the file is a file storing an argument, and information generated using the argument are stored. 2. The information transmitting method according to claim 1, further comprising adding an attribute indicating that the file is a file to be transmitted. 3. An information transmission method in an information transmission system, comprising: a server for transmitting information based on a request transmitted from a client to the client; and information generating means for generating information to be transmitted to the client. Receiving, by the server, a request transmitted from the client; and for an argument corresponding to the request received first by the server, information generated by the information generating means when the argument is given is fixed. Checking whether or not, and the server from the server to the information generating means to provide an argument according to the first received request, dynamically generate information using the argument, and return to the server And if it is detected in the step of checking whether it is fixed, if the fixed is detected, using the argument and the argument Storing the information generated by the information generating means in association with each other; and, when the server receives a new request from the client, searching for the stored argument to obtain the new information. Checking whether the argument according to the request is an argument whose information generated using the argument is fixed; and determining whether the information generated using the argument is fixed. Reading the information generated by using the stored argument when the argument is an argument, and transmitting the information from the server to the client. 4. The method according to claim 1, wherein the argument according to the first received request is:
If the information generated by the information generating means is an unfixed argument when the argument is given, the argument is stored as an argument that does not require generation information storage, and the same argument is stored next time. When received, without performing a check whether the information generated using the argument is fixed, to give the argument to the information generating means to dynamically generate information,
4. The information transmission method according to claim 3, wherein the generated information is transmitted from the server to the client. 5. The step of checking whether or not the information generated by the information generating means is fixed is to check whether or not to call an external program when the information generating means generates information. 5. The information transmitting method according to claim 3, wherein whether or not the information is fixed is checked. 6. An information transmitting apparatus for transmitting information based on a request transmitted from a client to the client, comprising: means for receiving a request transmitted from the client; and acquiring an argument corresponding to the received request. Means for generating, information generating means for dynamically generating information using the argument, storage means for storing the information given using the argument and the argument given to the information generating means, When a new request is received from the client, by searching for an argument stored in the storage unit,
Means for checking whether or not the argument corresponding to the new request has been received in the past; and if the argument has been received in the past, read out the information generated using the stored argument. Transmitting means to the client.