JP6064802B2 - Information processing apparatus and program - Google Patents

Description

  The present invention relates to an information processing apparatus and a program.

  It takes time and effort to update the posted information according to the update date and time when updating the posted information. Therefore, for example, as described in Patent Document 1 below, there is a proposal that automates updating of posted information based on input new arrival information.

JP 2001-325144 A

  The objective of this invention is providing the information processing apparatus and program which can provide the display information according to the authority which a user has, and designated date and time.

  According to the first aspect of the present invention, for a data element group in which a plurality of data elements constituting one or more authority information and display information are connected to a tree structure, one or more data elements constituting the display information are parented. Setting means for associating and setting disclosure period information for each of the one or more child data elements to be specified, user authority information related to the display information viewing request, and specifying means for specifying the specified date and time, the user The data element specified based on the authority information is present in a route in which the parents of the data elements corresponding to the display information related to the browsing request are sequentially connected, and the display information can be browsed by the authority information of the user. A search means for searching for data elements respectively included in one or more paths in which children of the data elements corresponding to the display information are sequentially connected when permitted, and the search means Out of the searched data elements, for the data elements whose release period is set in association with the setting means, the extraction means for extracting the data element including the specified date and time in the release period, and the data extracted by the extraction means An information processing apparatus including generation means for generating display information based on an element.

  The invention according to claim 2 accepts a request for browsing the display information, a means for associating the authority information of the user, the display information generated by the generation means, and a storage period in association with the effective period In this case, when display information within the effective period is stored in the storage means in association with the authority information of the user related to the display information browsing request, the display information stored in the storage means is stored in the user. The information processing apparatus according to claim 1, further comprising providing means for providing the information.

  According to a third aspect of the present invention, there is provided acquisition means for acquiring authority information of a user relating to an update request for the display information, identification information of a data element to be updated, and information on update contents, and the acquired user's information The update unit according to claim 1, further comprising: an update unit configured to update the update-target data element based on the update content information when update of the update-target data element is permitted by the authority information. Information processing apparatus.

  In a fourth aspect of the present invention, when the date and time related to the display information browsing request is specified, the specified date and time is set as the specified date and time, and the date and time related to the display information browsing request is specified. The information processing apparatus according to any one of claims 1 to 3, further comprising means for setting a current date and time to the designated date and time if not.

  According to the fifth aspect of the present invention, with respect to a data element group in which a plurality of data elements constituting one or more authority information and display information are connected to a tree structure, one or more data elements constituting the display information are parented. Setting means for associating and setting disclosure period information for each of the one or more child data elements to be specified, user authority information related to the display information viewing request, and specifying means for specifying the specified date and time, the user The data element specified based on the authority information is present in a route in which the parents of the data elements corresponding to the display information related to the browsing request are sequentially connected, and the display information can be browsed by the authority information of the user. A search means for searching for data elements respectively included in one or more paths in which children of the data elements corresponding to the display information are sequentially connected when permitted, and the search means Out of the searched data elements, for the data elements whose release period is set in association with the setting means, the extraction means for extracting the data element including the specified date and time in the release period, and the data extracted by the extraction means It is a program for causing a computer to function as a generation unit that generates display information based on elements.

  According to invention of Claim 1 and 4, the display information according to the authority which a user has and designated date and time can be provided.

  According to the second aspect of the present invention, it is possible to reduce the processing load for providing the display information to the user as compared with the case where the present configuration is not provided.

  According to invention of Claim 3, the display information according to the authority which a user has can be updated.

  According to the fourth aspect of the present invention, it is possible to provide display information according to the designated date and time when there is a designated date and time, and display information according to the current date and time when there is no designated date and time.

It is a system configuration figure of the information processing system concerning this embodiment. It is a hardware block diagram of an information provision server and a user terminal. It is a figure which shows an example of a structure of an information bulletin board. It is a figure which shows an example of the tree structure data expressing the relationship of the data element which comprises an information bulletin board. It is a figure which shows an example of the relationship between each publication start date of service objects SA, SB, SC, and SD, and a publication end date. It is a figure which shows an example of a resource management table. It is a figure which shows an example of an object data management table. It is a sequence diagram of information browsing processing. It is a figure which shows the example of data of the service object acquired about a designated date. It is a figure which shows the example of a display of an information bulletin board. It is a figure which shows an example of a cache data management table. It is a sequence diagram of a data element addition process. It is a sequence diagram of the update process of a data element. It is a sequence diagram of the deletion process of a data element.

  Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

[1. System configuration]
FIG. 1 shows a system configuration diagram of an information processing system S according to the present embodiment. The information processing system S according to the present embodiment includes an information providing server 1 and one or more user terminals 2, and the information providing server 1 and each user terminal 2 are connected to each other via a network 3 so that data communication can be performed. .

  In the information processing system S according to the present embodiment, the information providing server 1 holds a plurality of data elements constituting a web page, and according to access from the user terminal 2, the date and time corresponding to the access (even the access date and time) A data element is selected from a plurality of data elements based on the date and time specified by the user), and a web page based on the selected data element is generated and provided to the user terminal 2.

[2. Hardware configuration]
Hereinafter, an example of the hardware configuration of the information providing server 1 and the user terminal 2 included in the information processing system S according to the present embodiment will be described.

[2-2. Information providing server 1]
First, the hardware configuration of the information providing server 1 will be described. FIG. 2 shows a hardware configuration example of the information providing server 1. As shown in FIG. 2, the information providing server 1 includes a control unit 11, a storage unit 12, and a communication unit 13.

  The control unit 11 includes a CPU (Central Processing Unit), executes various arithmetic processes based on a program stored in the storage unit 12, and controls each unit of the information providing server 1.

  The storage unit 12 stores a control program such as an operating system of the information providing server 1 and data, and is also used as a work memory of the control unit 11. The program may be supplied to the information providing server 1 in a state stored in an information storage medium such as an optical disk, a magnetic disk, a magnetic tape, a magneto-optical disk, or a flash memory, or information may be transmitted via a data communication means such as the Internet. It may be supplied to the providing server 1. Hereinafter, an example of data stored in the storage unit 12 and a data configuration will be described.

  FIG. 3 shows an example of the configuration of the information bulletin board provided by the information providing server 1. As shown in FIG. 3, the information bulletin board 100 includes a header display field 101 (header object), a content display field 102 (content object), and a footer display field 103 (footer object). Each display field is a CSS 104 (cascading). Arranged according to the document structure based on the style sheet. In the content display column 102, notice information (for example, maintenance information) about each service of service A (SA), service B (SB), service C (SC), and service D (SD) is displayed. The maintenance information for service A, service B, service C, and service D may be variable according to the date and time (current date and time or designated date and time).

  FIG. 4 shows an example of tree-structured data that represents the relationship between data elements constituting the information bulletin board shown in FIG. As shown in FIG. 4, the server object has a bulletin board object, an administrator access token object, and a general user access token object as child objects.

  The bulletin board object has a header object, a content object, a footer object, and a CSS object as child objects. Here, the content object includes a service A object (SA object), a service B object (SB object), a service C object (SC object), and a service D object (SD object).

  The SA object has SA10, SA11, and SA12 displayed as child objects according to the respective publication periods (from the publication start date to the publication end date).

  The SB object has SB7 and SB8 displayed as child objects in accordance with the respective publication periods (from the publication start date to the publication end date).

  The SC object has SC15, SC16, SC17, and SC18 displayed as child objects in accordance with the respective publication periods (from the publication start date to the publication end date).

  The SD object has, as child objects, SD3 and SD4 displayed according to the respective publication periods (from the publication start date to the publication end date).

  FIG. 5 shows an example of the relationship between the publication start date and the publication end date of each of the service objects SA, SB, SC, and SD. For example, at date T1 in FIG. 5, the contents of SA10 are displayed for service SA, the contents of SB7 are displayed for service SB, the contents of SC15 are displayed for service SC, and the contents of SD3 are displayed for service SD. Is displayed. Also, at the date and time T2 in FIG. 5, the contents of SA11 are displayed for the service SA, the contents of SB8 are displayed for the service SB, the contents of SC16 are displayed for the service SC, and the contents of SD4 are displayed for the service SD. Is displayed.

  FIG. 6 shows an example of a resource management table that holds the data of the tree structure data shown in FIG. As shown in FIG. 6, the resource management table includes one or more records including items of object key (object ID), prototype value, artifact value, state value, and content type value. Here, an object identifier (for example, a hash value) is stored in the object key, an object ID of a parent object of the object is stored in the prototype value, and an object of a child object of the object is stored in the artifact value. The ID is stored, the key of the data table indicating the data content of the object is stored in the state value, and the key of the data table indicating the type of the object is stored in the content type value.

  FIG. 7 shows an example of an object data management table that stores data contents of objects. As shown in FIG. 7, the object data management table stores the data content of the object in association with the key (object ID). For example, regarding the access token object, information of {“owner”, “client”, “scope”} is associated. Here, the owner is treated as a process requester, and the client is treated as a process requester. The scope includes generation (C: create), update (U: update), deletion (D: delete), and list acquisition (L: list). ) Includes information on the authority of each process. It should be noted that the scope may include information on authorized processing.

  Further, as shown in FIG. 7, with respect to the service object, an object ID indicating a disclosure start date, a disclosure end date, and data contents is associated. For example, in the case of an object ID associated with SA11, text information that “the operation may become unstable, so please refrain from input work” is stored in association with it.

  The communication unit 13 includes a network interface card (NIC), for example, and communicates with the user terminal 2 by connecting to the network 3 via the NIC.

[2-2. User terminal 2]
FIG. 2 shows a hardware configuration example of the user terminal 2. As shown in FIG. 2, the user terminal 2 includes a control unit 21, a storage unit 22, a communication unit 23, an input unit 24, and a display unit 25.

  The control unit 21 includes a CPU (Central Processing Unit), executes various arithmetic processes based on a program stored in the storage unit 22, and controls each unit of the user terminal 2.

  The storage unit 22 stores a control program such as an operating system of the user terminal 2 and data, and is also used as a work memory of the control unit 21. The program may be supplied to the user terminal 2 in a state of being stored in an information storage medium such as an optical disk, a magnetic disk, a magnetic tape, a magneto-optical disk, a flash memory, or the user terminal via a data communication network such as the Internet. 2 may be supplied.

  The communication unit 23 includes, for example, a network interface card (NIC), and communicates with the information providing server 1 by connecting to the network 3 via the NIC.

  The input unit 24 is realized by an input device such as a touch panel or a keyboard, and receives an operation input from a user.

  The display unit 25 is realized by a display device such as a liquid crystal display, and displays a result (screen) of information processing by the control unit 21.

[3. Sequence description]
Next, details of processing executed in the information processing system S will be described.

[3-1. Information browsing process]
First, details of the information browsing process in which the user terminal 2 receives and displays information bulletin board data from the information providing server 1 will be described with reference to the sequence diagram shown in FIG.

  As shown in FIG. 8, the user terminal 2 accesses the URI requesting information browsing of the designated information bulletin board using an access token according to the user's operation, and accesses the information providing server 1 to the information bulletin board. A browsing request is made (S101). For example, the user terminal 2 may access the information providing server 1 by a command (GET https://server.com/5feb66, Authorization: Bearer 6b86b273). Here, “5faceb66” corresponds to the object ID of the information bulletin board, and “6b86b273” corresponds to the object ID of the access token. The command may include a display date specification. If the display date is not specified, the current date may be treated as the specified display date. The designated display date may be set by, for example, the user directly inputting the date and time, or may be set based on the user's input to a date and time designation object (application) such as a calendar or a slide bar. The date may be any date in the past, present, or future.

  The information providing server 1 verifies the access token received from the user terminal 2 (S102). For example, the information providing server 1 searches the resource management table for the record using the ID of the access token as a key, and specifies the ID stored in the state value in the searched record. Then, the information providing server 1 acquires the access token data {“owner”, “client”, “scope”} stored in the object data management table using the identified ID as a key. Here, the information providing server 1 is a process in which the owner (requester) is included in the prototype chain of the access token (the path of the parent object of the access token), and the scope executes a command from the user terminal 2 Is included (in the example of this sequence, “list” is included in the scope), the process from the user terminal 2 is permitted (verification is successful); otherwise, the process from the user terminal 2 is not permitted ( (Verification failure).

  When the verification fails as a result of the verification of the access token (S103: N), the information providing server 1 notifies the user terminal 2 of an error (S104) and ends the process. If the verification is successful as a result of the verification of the access token (S103: Y), the information providing server 1 proceeds to S105.

  When valid cache data is stored in association with the ID and access token of the information bulletin board (S105: Y), the information providing server 1 transmits the stored cache data to the user terminal 2 (S106). . The information providing server 1 may determine an expiration date for the cache data, determine that the cache data is valid if it is within the expiration date, and determine that the cache data is invalid if it is outside the expiration date.

  The user terminal 2 displays the information bulletin board page based on the cache data transmitted from the information providing server 1 (S107), and ends the process.

  Further, when the valid cache data associated with the information bulletin board ID and the access token is not stored in S105 (S105: N), the information providing server 1 proceeds to S108.

  The information providing server 1 searches the resource management table for a record including the ID of the information bulletin board designated from the user terminal 2 as a key, and finds information elements of the information bulletin board that are disclosed on the designated date based on the retrieved records. Obtain (S108). For example, the information providing server 1 acquires a header object, a content object, a footer object, and a CSS object by using the ID (5 faceb 66) of the information bulletin board as a key. Furthermore, when the acquired object (for example, a content object) has a child object (service object), the information providing server 1 acquires the object as it is when a public period is not specified for the object, When the publication period is designated, an object whose designated date is included in the publication period may be selectively acquired. Specifically, the information providing server 1 extracts and extracts the child object SA11 including the specified date (20133015) from the publication start date to the publication end date among the child objects SA10 to SA12 related to the service object SA. Information associated with the child object SA11 is acquired as display data. Other service objects SB to SD may be processed in the same manner.

  FIG. 9 shows an example of service object data obtained on the specified date (20133015). As shown in FIG. 9, in the case of the specified date (20133015), service objects SA11, SB8, SC16, and SD4 each including the specified date in the disclosure period are acquired.

  The information providing server 1 generates display data to be displayed on the specified date based on the data element acquired in S108 (S109). In addition, when data is not included in the information associated with the object (in the case of null), the data may not be displayed. If the data element is not acquired in S108, or if there is no data element containing data in the data element acquired in S108, the information providing server 1 indicates that there is no corresponding information. Display data for displaying may be generated.

  FIG. 10 shows an example of an information bulletin board displayed based on display data. In the example shown in FIG. 10, data associated with the services SA11, SC16, SD4 corresponding to the specified date is displayed. Here, the service SB8 is not displayed because it contains no information (null).

  The information providing server 1 records the display data generated in S109 in association with the information bulletin board ID, access token, display date, validity period, and the like (S110). For example, the information providing server 1 may record the display data cache data in the cache data management table shown in FIG.

  In the example of the cache data management table shown in FIG. 11, the data ID of the display data, the information bulletin board ID, the access token, the display date, the valid period, and the data storage destination are stored in association with each other. Here, the effective period may be set as the end date of the effective period up to the earliest date and time among objects for which the end date of disclosure is determined.

  Next, the information providing server 1 records the access from the user of the user terminal 2 (S111), and transmits the display data generated in S109 to the user terminal 2 (S112).

  The user terminal 2 displays the display data received from the information providing server 1 on the display unit 25 (S107), and ends the process.

  The above is the processing flow related to the display data acquisition processing of the information bulletin board at the designated date and time.

[3-2. Information addition process]
Next, processing for adding data elements constituting an information bulletin board will be described with reference to the sequence diagram shown in FIG.

  As illustrated in FIG. 12, the user terminal 2 acquires, for example, the contents (additional information) of the data element to be added and information on the parent object to which the data element is to be added (S201). For example, the additional information may include a publication start date, a publication end date, and a message. Then, the user terminal 2 generates a URI (including a parent object ID and additional information) including a command for adding a data element of the information bulletin board based on the acquired additional information and the parent object, and an access token is generated in the generated URI. Is used to request the information providing server 1 to add a data element (S202).

  The information providing server 1 verifies the access token received from the user terminal 2 (S203). For example, the information providing server 1 searches the resource management table for the record using the ID of the access token as a key, and specifies the ID stored in the state value in the searched record. Then, the information providing server 1 acquires the access token data {“owner”, “client”, “scope”} stored in the object data management table using the identified ID as a key. Here, the information providing server 1 is a process in which the owner (requester) is included in the prototype chain of the access token (the path of the parent object of the access token), and the scope executes a command from the user terminal 2 Is included (in the example of this sequence, “create” is included in the scope), the process from the user terminal 2 is permitted (verification is successful); otherwise, the process from the user terminal 2 is not permitted ( (Verification failure).

  When the verification fails as a result of the verification of the access token (S204: N), the information providing server 1 notifies the user terminal 2 of an error (S205) and ends the process. If the verification is successful as a result of the verification of the access token (S204: Y), the information providing server 1 proceeds to S206.

  The information providing server 1 generates an ID of the child object associated with the ID of the parent object (data element) included in the request from the user terminal 2 (S206), and adds and registers a record for the generated ID (S206). S207). Specifically, the information providing server 1 uses the parent object ID as a key, the first record storing the ID generated in S206 in the artifact value, and the ID generated in S206 as the key, and the parent object in the prototype value. Is added to the resource management table, and a third record using the state value stored in the second record as a key is added to the object data management table. The contents of the additional information may be stored in association with the record or the third record.

  When the addition of the data element fails (S208: N), the information providing server 1 notifies the user terminal 2 of the error (S209), and when the update of the data element ends normally (S208: Y). ), The completion of the addition of the data element is notified to the user terminal 2 (S210).

  Here, the information providing server 1 generates display data in which the date and time within the disclosure period of the added data element is set to the specified date, and transmits the display data to the user terminal 2 together with a notification of completion of the addition of the data element. It is good to do.

[3-3. Information update process]
Next, update processing of data elements constituting the information bulletin board will be described with reference to the sequence diagram shown in FIG.

  As illustrated in FIG. 13, the user terminal 2 acquires update information on data elements of an information bulletin board to be updated, for example, by user input (S301). For example, the update information may include a publication start date, a publication end date, and a message. Then, the user terminal 2 generates a URI (including the ID of the update target data element and the update information) including a command for updating the data element of the information bulletin board based on the acquired update information, and an access token is generated in the generated URI. Is used to request the information providing server 1 to update the data element (S302).

  The information providing server 1 verifies the access token received from the user terminal 2 (S302). For example, the information providing server 1 searches the resource management table for the record using the ID of the access token as a key, and specifies the ID stored in the state value in the searched record. Then, the information providing server 1 acquires the access token data {“owner”, “client”, “scope”} stored in the object data management table using the identified ID as a key. Here, the information providing server 1 is a process in which the owner (requester) is included in the prototype chain of the access token (the path of the parent object of the access token), and the scope executes a command from the user terminal 2 Is included (in the example of this sequence, “update” is included in the scope), the process from the user terminal 2 is permitted (verification is successful), otherwise the process from the user terminal 2 is not permitted ( (Verification failure).

  When the verification fails as a result of the verification of the access token (S304: N), the information providing server 1 notifies the user terminal 2 of an error (S305) and ends the process. If the verification is successful as a result of the verification of the access token (S304: Y), the information providing server 1 proceeds to S306.

  The information providing server 1 updates the data associated with the ID of the data element included in the request from the user terminal 2 based on the update information (S306). Specifically, the information providing server 1 may update the information of the content of the data element associated with the ID of the data element to be updated with the content of the update information.

  When the update of the data element fails (S307: N), the information providing server 1 notifies the user terminal 2 of the error (S308), and when the update of the data element ends normally (S307: Y). ), The user terminal 2 is notified of the completion of the data update (S309).

  Here, the information providing server 1 generates display data in which the date and time within the disclosure period of the updated data element is set to the specified date, and transmits the display data to the user terminal 2 together with a notification of completion of the data update. It is good.

[3-4. Information deletion process]
Next, with reference to the sequence diagram shown in FIG. 14, the deletion process of the data elements constituting the information bulletin board will be described.

  As shown in FIG. 14, the user terminal 2 acquires information on data elements of an information bulletin board to be deleted, for example, by user input (S401). Then, the user terminal 2 generates a URI (including the ID of the data element to be deleted) including a command for deleting the data element of the information bulletin board to be deleted, and accesses the generated URI using an access token. The information providing server 1 is requested to delete the data element (S402).

  The information providing server 1 verifies the access token received from the user terminal 2 (S403). For example, the information providing server 1 searches the resource management table for the record using the ID of the access token as a key, and specifies the ID stored in the state value in the searched record. Then, the information providing server 1 acquires the access token data {“owner”, “client”, “scope”} stored in the object data management table using the identified ID as a key. Here, the information providing server 1 is a process in which the owner (requester) is included in the prototype chain of the access token (the path of the parent object of the access token), and the scope executes a command from the user terminal 2 Is included (in the example of this sequence, “delete” is included in the scope), the process from the user terminal 2 is permitted (verification is successful); otherwise, the process from the user terminal 2 is not permitted ( (Verification failure).

  When the verification fails as a result of the verification of the access token (S404: N), the information providing server 1 notifies the user terminal 2 of an error (S405) and ends the process. If the verification is successful as a result of the verification of the access token (S404: Y), the information providing server 1 proceeds to S406.

  The information providing server 1 deletes the record regarding the ID of the data element included in the request from the user terminal 2 (S406). Specifically, the information providing server 1 may delete a record including the ID of the data element to be deleted as a key or an artifact value.

  When the deletion of the data element fails (S407: N), the information providing server 1 notifies the user terminal 2 of an error (S408), and when the deletion of the data element ends normally (S407: Y). ), The user terminal 2 is notified of the completion of the deletion of the data element (S409).

  According to the information processing system S described above, it is possible to browse, add, update, and delete data elements according to authority from the user terminal 2, and to change the data elements displayed according to the designated date and time. it can.

  For example, browsing, addition, update, and deletion may be controlled for each data element by individually setting an access token for each data element. At this time, the information providing server 1 may set only the data element permitted by the presented access token as a target for browsing, adding, updating, and deleting.

  Further, the present invention is not limited to the above-described embodiment. For example, in the embodiment described above, an example in which the present invention is applied to a server / client type system has been described. However, for example, the functions of the user terminal 2 and the information providing server 1 may be integrated.

  Of course, the present invention is not limited to the display of an information bulletin board, but can be applied to other forms of information provision as well.

  S information processing system, 1 information providing server, 2 user terminal, 3 network, 11 control unit, 12 storage unit, 13 communication unit, 21 control unit, 22 storage unit, 23 communication unit, 24 input unit, 25 display unit, 100 Information board, 101 header object, 102 content object, 103 footer object, 104 CSS object.

Claims (5)

For a data element group in which a plurality of data elements constituting one or more authority information and display information are connected to a tree structure, each of one or more child data elements having one or more data elements constituting the display information as a parent Setting means for associating and setting the information of the publication period for each,
A specifying means for specifying the authority information of the user related to the browsing request for the display information and the designated date and time;
The data element specified based on the user's authority information exists in a route that sequentially connects the parents of the data elements corresponding to the display information related to the browsing request, and the display information Search means for searching data elements included in each of one or more paths sequentially connecting children of data elements corresponding to the display information when browsing is permitted;
Extraction means for extracting a data element that includes the specified date and time in the publication period for the data elements that are set in association with the publication period by the setting means among the data elements searched by the search means;
Generating means for generating display information based on the data elements extracted by the extracting means;
An information processing apparatus including: Means for associating and storing the authority information of the user, the display information generated by the generating means, and the validity period in a storage means;
When the display information browsing request is received, if display information within the effective period is stored in the storage unit in association with the authority information of the user related to the display information browsing request, the storage unit stores The information processing apparatus according to claim 1, further comprising providing means for providing the stored display information to the user. Acquisition means for acquiring authority information of a user related to the update request for the display information, identification information of a data element to be updated, and information of an update content;
The update unit further updates the data element to be updated based on the information of the update contents when the update of the data element to be updated is permitted by the acquired authority information of the user. Or the information processing apparatus of 2. When the date and time related to the display information browsing request is specified, the specified date and time is set as the specified date and time. When the date and time related to the display information browsing request is not specified, the current date and time are set. The information processing apparatus according to claim 1, further comprising: means for setting the designated date and time. For a data element group in which a plurality of data elements constituting one or more authority information and display information are connected to a tree structure, each of one or more child data elements having one or more data elements constituting the display information as a parent Setting means for associating and setting the information of the publication period for each,
A specifying means for specifying the authority information of the user related to the browsing request for the display information and the designated date and time;
The data element specified based on the user's authority information exists in a route that sequentially connects the parents of the data elements corresponding to the display information related to the browsing request, and the display information Search means for searching data elements included in each of one or more paths sequentially connecting children of data elements corresponding to the display information when browsing is permitted;
Extraction means for extracting a data element that includes the specified date and time in the publication period for the data elements that are set in association with the publication period by the setting means among the data elements searched by the search means;
A program for causing a computer to function as generation means for generating display information based on the data element extracted by the extraction means.

Images