JP2004265049A - Data processing system, data processor, data processing method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a burden on a server when the server manages a plurality of requests from a client as one session to perform the editing or processing of document data in response to the requests. <P>SOLUTION: In the case that access from the client is not conducted for a prescribed time in a session, document data edited or processed in the session is preserved or the session is abandoned. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for managing a session between data processing apparatuses, for example, a session management method in a document editing system including a server operating as a web server and a client capable of executing a web browser.
[0002]
[Prior art]
In a web application system, various processes are executed by a client sending a request to a server and the server sending a response to the request to the client. At this time, the protocol between the client and the server is HTTP (Hyper Text Transfer Protocol) (for example, Patent Document 1).
[0003]
In HTTP, connection and disconnection of a connection are performed each time a client communicates with a server once. Therefore, when the process proceeds while transiting a plurality of screens, the client issues a plurality of requests to the server, and the connection is connected and disconnected each time. Therefore, when the server can communicate with a plurality of clients, it is difficult to determine from which client each request transmitted via the network is transmitted.
[0004]
[Patent Document 1]
JP 2000-284937 A
[Problems to be solved by the invention]
Therefore, continuous processing from the same client is managed as one session, and when issuing a request to the server, the client adds a session ID to each request. The server determines that requests having the same session ID are consecutive requests from the same client. By doing so, the server can receive requests from the client as a continuous request and provide the client with a complicated process or service including a plurality of requests.
[0006]
However, while continuous requests can be accepted, the server cannot know that the client has interrupted the process if the user terminates the web browser during the process or if the user interrupts the process during the process. For this reason, information about the session is left unnecessarily in a table for managing the session and the like, and an extra load is imposed on the server.
[0007]
In order to prevent this, a method is conceivable in which a termination unit is provided in the client and post-processing of the session is performed when the termination unit is executed. However, the user does not always use the ending means.
[0008]
Therefore, in the present invention, a session timeout function is provided to prevent a session from remaining on the server. In addition, the provision of the session timeout function prevents the data being processed from being discarded due to the session timeout and preventing the data from being restored.
[0009]
[Means for Solving the Problems]
In order to solve the above problem, a data processing system according to the present invention provides a data processing system in which a server device edits or processes document data in response to a request from a client device, in accordance with a request from the client device to the server device. Processing means for editing or processing document data; session management means for managing editing or processing of document data based on a plurality of requests from the same client device as a session; A storage means for storing document data edited or processed in the session if there has not been access for a second predetermined time; And having a discarding discarding means ® down.
[0010]
Further, a data processing device according to the present invention is a data processing device for editing or processing document data in response to a request from an external device. Means, a session management means for managing editing or processing of document data based on a plurality of requests from the same external device as a session, and if there is no access from the external device in the session for a first predetermined time, the session And storage means for storing the document data edited or processed in the above, and discard means for discarding the session when there is no access from an external device during the session for the second predetermined time.
[0011]
Further, the data processing method according to the present invention is a data processing method for managing editing or processing of document data based on a plurality of requests from the same external device as a session. Or a processing step of performing processing; a storage step of storing document data edited or processed in the session when there is no access from an external device in the session for a first predetermined time; And a discarding step of discarding the session when there is no access for the sixth predetermined time.
[0012]
A program according to the present invention is a program for managing editing or processing of document data based on a plurality of requests from the same external device as a session, and editing the document data according to a request from the external device. Or a processing step of performing processing; a storage step of storing document data edited or processed in the session when there is no access from an external device in the session for a first predetermined time; And discarding the session if the access has not been made for the sixth predetermined time.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
First, the configuration of the print system according to the present invention will be described. 1 and 2 are diagrams showing a configuration of the pudding system. The user terminal device (hereinafter, user terminal) 100 is an information processing device as a client for accessing the print system, and is, for example, a PC (personal computer), an information portable terminal, or the like. A print service server device (hereinafter, print service server) 101 is a data processing device that performs operation management and service management of a print service performed in a print system.
[0015]
In FIG. 1, a user terminal 100 and a print service server 101 are arranged so as to be able to communicate on a network that goes over a firewall. Each is connected to the Internet 102, and the user can access the print service system 101 from the user terminal 100 and instruct printing of a predetermined document.
[0016]
In FIG. 2, the user terminal 100 and the print service server 101 are arranged so as to be able to communicate over the Internet via a firewall, but the user terminal 103 and the print service server 101 can communicate over a network (intranet) within the firewall. Are located in
[0017]
The number of user terminals is not limited to one, and a plurality of user terminals can be installed according to the number of users.
[0018]
The means for accessing the print service server 101 is implemented using a general Internet protocol, for example, HTTP (Hyper Text Transfer Protocol). As a security measure, means represented by SSL (Secure Socket Layer) is used.
[0019]
FIG. 3 is a functional block diagram of the print service server 101.
[0020]
The communication control unit 301 performs a data communication process between the user terminal 100 and the print service server 101. Here, processing such as user authentication is performed based on data managed by the authentication information management device 351.
[0021]
The print format setting unit 302 converts the document data stored in the Tmp information management device (device for managing information valid only while the user is logged in to the print service) according to the print format information set by the user. Perform the update process.
[0022]
The preview image creation unit 303 creates preview image data of the page requested by the user from the document data in the Tmp information management device, and stores the preview image data in the Tmp information management device. Note that the preview image may look as if a plurality of sheets are arranged on one screen in addition to one sheet. In this case, the preview image data for a plurality of sheets is stored in the Tmp information management device. Then, additional information such as a page number is added to each sheet so that a preview image can be displayed.
[0023]
The document structure creation unit 304 analyzes the structure of chapters and pages of the document data and arranges them in a tree structure.
[0024]
The job processing unit 305 stores the document data stored in the Tmp information management device in the job management device according to the print request of the user.
[0025]
The document management unit 306 creates a list of document data that can be used by the user from the document information management device. Further, the document data updated by the Tmp information management device is stored in the document information management device according to a user's storage instruction.
[0026]
The edit processing unit 307 performs processing such as deleting or moving a page.
[0027]
The result notification unit 308 performs a process of creating a character string such as an error display or a warning and reporting the result of the user operation when the user operation is inappropriate.
[0028]
The printer selection unit 309 searches for an available printer communicably connected to the print service server 101, and creates a list of printer names and the like. The printer is a printing device such as a laser beam printer or an inkjet printer.
[0029]
The print service unit 310 schedules the document data on standby for printing stored in the job management apparatus, and causes the printer to perform printing based on the document data according to the queuing rule. In this case, data based on the document data is output to the printer.
[0030]
The printer 311 prints an image based on the document data. Although only one printer is shown in FIG. 3, a plurality of printers can be installed.
[0031]
The session management unit 312 generates and destroys a session, and manages all session information in a table.
[0032]
A data management device that can be used in the print service server 101 will be described. These management devices may be configured by a database or the like. The authentication information management device 351 manages data corresponding to the user ID (user identification information) of each user while ensuring sufficient security. The job management device 352 manages the document data requested by the user to print, and outputs the document data in accordance with an instruction from the print service unit 310.
[0033]
The document information management device 353 stores and retrieves document data according to a request from a user. When the document data is read from the document information management device 353, the document data is locked. Therefore, other users on the network cannot perform the work by designating the document data.
[0034]
The Tmp information management device 354 copies the document data specified by the user into the device. The document data in the Tmp information management device is updated according to various requests from the user. The created preview image data is temporarily stored here.
[0035]
FIG. 4 is a diagram illustrating a flowchart of the print service process. The user terminal 100 sends or notifies data to the print service server by sending a request to the print service server 101.
[0036]
First, when the user attempts to log in to the print service server 101 from the user terminal 100, the user terminal transmits the user ID and the password input by the user to the print service server 101 (step S401). The print service server 101 performs an authentication process based on the received user ID and password, and returns an authentication result (access permission / access denial) to the user terminal 100 (step S402). The user terminal 100 determines whether the login has been accepted based on the authentication result (step S403).
[0037]
If the login is accepted, a document search request is issued (step S404). In response to the text search request, the print service server 101 searches for the corresponding document data from the document data registered in advance, and notifies the user terminal 100 of the search result (step S405). The user terminal 100 receives the search result and notifies the user. The document data selected and edited by the user among the document data found by the search is temporary document data.
[0038]
Next, it is determined whether or not the user has requested display of a preview (step S406). If the preview display is requested, the print service server 101 creates preview image data and transmits it to the user terminal 100 together with a page number and the like (step S407). The user terminal 100 displays a preview image on the preview screen based on the received preview image data (Step S408). In displaying the preview image, images for a plurality of sheets can be displayed on the same screen. In that case, the size of the image data is adjusted to the optimum size based on the number of sheets.
[0039]
Further, it is determined whether the user has requested the selection of a printer (step S409). If the selection of a printer has been requested, the print service server 101 searches for a communicably connected printer, and notifies the user terminal 100 of a list of found printers (step S410). Here, identification information (for example, a printer name and an address) of the found printer is obtained, and a list of them is created. The user terminal 100 displays the list (printer selection screen) so that the user can select a printer from the list (step S411). When the user selects a printer, identification information for identifying the selected printer is notified to the print service server 101, and is stored in association with the document data.
[0040]
Further, it is determined whether the user has requested the print style setting (step S412). If the print style setting has been requested, a setting screen is displayed to notify the user of the print style that can be set (step S413). The user selects or inputs a print style on the setting screen. The user terminal 100 notifies the print service server 101 of the print format selected or input by the user, and the print service server 101 changes the print format setting information of the temporary document data according to the notified information (step S414).
[0041]
Further, it is determined whether or not the user has requested storage (step S415). If saving is requested, a screen for confirming the saving with the user is displayed (step S416). If the user selects to save, the print service server 101 is notified of the fact, and the print service server 101 performs a process of saving the temporary document data (step S417).
[0042]
Further, it is determined whether the user has requested editing (step S418). If editing has been requested, an editing screen is displayed so that the user can edit the document data (step S419). The user terminal 100 notifies the print service server 101 of the result of the editing performed by the user. The print service server 101 stores the editing result in temporary document data (step S420).
[0043]
Finally, it is determined whether the user has requested printing (step S421). If a print request has been made, the print service server 101 accepts printing of temporary document data (step S422). Then, when the printer is not in a busy state, data based on the temporary document data (or the temporary document data itself) is output to the printer (step S423).
[0044]
In FIG. 4, the processes in steps S406 to S421 transit sequentially, but the user can randomly request preview display, printer selection, print format setting, saving, editing, and printing.
[0045]
FIG. 5 is a diagram illustrating a method for managing a session between the user terminal and the print service server. While the user terminal accesses the print service server 101 and performs the processing of FIG. 4, a session is established between the user terminal and the print service server 101. The print service server 101 has a session management table for managing a session with each of a plurality of user terminals or a plurality of sessions with one user terminal.
[0046]
The print service server 101 issues a command such as creation or destruction of a session, and if there is information necessary for managing the session, the print service server 101 refers to the session management table to acquire the necessary information.
[0047]
510 is a session management table. Information corresponding to each session (hereinafter referred to as session management information) is managed in a session management table, and is processed according to external requests such as creation, destruction, and reference of a session. Each session management information has a configuration as shown in FIG.
[0048]
FIG. 6 is a diagram illustrating a configuration of the session management information. The session management information holds a session ID, a user name, a document name, a previously accessed time, and a session timeout flag (ON / OFF).
[0049]
Reference numeral 502 denotes a session timeout monitoring module. The session timeout monitoring module 502 checks at regular intervals whether a session timeout has occurred for a session for which the session timeout flag is set to ON. If a session time-out has occurred, a predetermined process such as discarding a session and discarding the corresponding session management information is performed.
[0050]
FIG. 7 is a flowchart illustrating a session timeout check process performed by the session timeout monitoring module 502 at regular intervals. To determine the session timeout, two types of timeout periods T1 and T2 (T1 <T2) are provided.
[0051]
First, in a session between a certain user terminal (hereinafter, this user terminal is referred to as user terminal A) and the print service server 100 (hereinafter, this session is referred to as session A), there is a previous access from the user terminal A. (E.g., the time elapsed since the last access from the user terminal A) is less than or equal to T1, between T1 and T2, or greater than or equal to T2 ( S701). Note that “below” or “less than”, “over” or “greater” can be adjusted according to the implementation situation.
[0052]
If T1 or less, the session timeout check processing ends.
[0053]
If it is between T1 and T2, the session timeout flag is turned on in the session management information of session A (step S702). Next, the document data being edited existing in the memory is temporarily saved in a system temporary storage area in a file format. Further, the open document data is closed and completely removed from the memory (step S704).
[0054]
If the value is equal to or longer than T2, the document data being edited stored in the system temporary storage area is deleted (step S705). Next, the session A and the session management information of the session A are discarded (step S706).
[0055]
When the document data is stored in the system temporary storage area (when steps S702 to S703 are executed), if there is an access from the user terminal A, the document data is restored.
[0056]
FIG. 8 is a flowchart showing the document data restoration process. First, a path to the document data stored in the system temporary storage area is obtained from the session management information (step S801). Next, the document data indicated by the acquired path is moved to a storage area for storing the document data when the document data is opened (step S802). Finally, the moved document data is opened to make it editable. However, at this time, the document data is opened as read-only. This is because the document data was once stored in another place, and another document data with the same name exists in the place where the document data originally existed.
[0057]
FIG. 9 is a block diagram illustrating a hardware configuration of the user terminal or the print service server. The user terminal or the print service server has a CPU 901, a memory 902, a keyboard 903, a display 904, an external storage device 905, and a network interface card 906.
[0058]
In the configuration of FIG. 9, the data processing described above is performed by the CPU 901 executing the program stored in the memory 902. Necessary programs are stored in an external storage device 905 such as a hard disk. The external storage device 905 may use a removable storage medium such as a CDROM.
[0059]
The display 904 displays images and information. The device is connected to a network via a network interface card 906. The user inputs necessary information by using the keyboard 903 or a pointing device (not shown).
[0060]
FIG. 3 is a diagram showing a memory map in a state where the program according to the present invention is loaded into the RAM 203 and is executable by the CPU 201. 31 is a basic I / O program. Reference numeral 302 denotes an operating system such as a window system. 303 is a program according to the present invention. Reference numeral 304 denotes related data. A work area 305 is used when the CPU 201 executes a program.
[0061]
Further, an object of the present invention is to supply a storage medium storing a program code of software (program) for realizing the functions of the above-described embodiments to a computer as shown in FIG. Is achieved by reading and executing the program code stored in the storage medium. In this case, the program code itself read from the storage medium realizes the function of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.
[0062]
As a storage medium for supplying the program code, for example, besides a floppy disk (registered trademark) and a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM Etc. can be used.
[0063]
When the computer executes the readout program code, not only the functions of the above-described embodiments are realized, but also an OS (Operating System) running on the computer based on the instruction of the program code. It goes without saying that a part or all of the actual processing is performed and the functions of the above-described embodiments are realized by the processing.
[0064]
Further, after the program code read from the storage medium is written into a memory provided on a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that a CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.
[0065]
With the above processing, even in a session in which a session timeout has occurred, it is possible to continue editing the document data if requested. Further, after the session times out, the document data is temporarily closed, so that the load on the print service server 100 can be reduced.
[0066]
【The invention's effect】
As described above, according to the present invention, for example, in a data processing system using a web browser as a user interface, even if there is no request from a client for a predetermined time, document data being edited or being processed is temporarily saved or By destroying the session, the load on the server can be reduced.
[0067]
Further, even after a lapse of a predetermined time, editing or processing of the saved document data can be continued until the session is destroyed.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a pudding system.
FIG. 2 is a diagram illustrating a configuration of a pudding system.
FIG. 3 is a functional block diagram of the print service server 101.
FIG. 4 is a diagram illustrating a flowchart of a print service process.
FIG. 5 is a diagram illustrating a method for managing a session between a user terminal and a print service server.
FIG. 6 is a diagram showing a configuration of session management information.
FIG. 7 is a flowchart illustrating a session timeout check process.
FIG. 8 is a flowchart illustrating a document data restoration process.
FIG. 9 is a block diagram illustrating a hardware configuration of a user terminal or a print service server.
FIG. 10 is a diagram showing a method of supplying a program.
[Explanation of symbols]
100 User terminal 101 Print service server 102 Internet 103 User terminal 104 Intranet

Claims (10)

In a data processing system in which a server device edits or processes document data in response to a request from a client device,
Processing means for editing or processing document data according to a request from the client device to the server device;
Session management means for managing editing or processing of document data based on a plurality of requests from the same client device as a session,
Storage means for storing document data edited or processed in the session when there has been no access from the client device for the first predetermined time in the session;
A data processing system comprising: a discarding unit that discards a session when there is no access from a client device during a session for a second predetermined time. In a data processing device that edits or processes document data in response to a request from an external device,
Processing means for editing or processing document data according to a request from an external device;
A session management unit that manages editing or processing of document data based on a plurality of requests from the same external device as a session,
Storage means for storing document data edited or processed in the session when there has been no access from the external device for the first predetermined time in the session;
A data processing system comprising: a discarding unit that discards a session when there is no access from an external device during a session for a second predetermined time. 3. The data processing apparatus according to claim 2, wherein the document data stored by the storage unit can be edited or processed again. 4. The data processing apparatus according to claim 2, wherein the processing unit edits or processes the document data in response to a request from a web browser executed by an external device. 5. The method according to claim 2, wherein editing or processing the document data includes generating preview screen data of the document data, setting a print style for the document data, saving the document data, and printing the document data. The data processing device as described in the above. In a data processing method for managing editing or processing of document data based on a plurality of requests from the same external device as a session,
A processing step of editing or processing document data according to a request from an external device;
A storage step of storing document data edited or processed in the session when there has been no access from the external device for the first predetermined time in the session;
A discarding step of discarding the session when there is no access from the external device during the session for the sixth predetermined time. 7. The data processing method according to claim 6, wherein the document data stored in the storing step is ready for editing or processing. 8. The data processing method according to claim 6, wherein the processing step edits or processes the document data in response to a request from a web browser executed by an external device. 9. The method according to claim 6, wherein the editing or processing of the document data includes generating preview screen data of the document data, setting a print style for the document data, saving the document data, and printing the document data. Data processing method described. A program for managing editing or processing of document data based on a plurality of requests from the same external device as a session,
A processing step of editing or processing document data according to a request from an external device;
A storage step of storing document data edited or processed in the session when there has been no access from the external device for the first predetermined time in the session;
And a discarding step of discarding the session when there is no access from an external device during the session for a sixth predetermined time.

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