JP4826556B2 - Operation history management system and program - Google Patents

Description

  The present invention relates to an operation history management system and a program.

  There is a technique for recording history information of operations performed on a document in order to ensure the safety of the document. In this technique, a document for recording an operation history is designated, and the operation history is recorded when an operation is performed on the document.

  In addition, there is a WEB application technique for acquiring and processing a document by WEB communication between a WEB client and a WEB server. With this technology, it is possible to acquire a document to be operated. However, when recording history information of this document, a process for creating an operation history by designating the acquired document as a document for recording history information is performed. There is a need to do.

  That is, in order to create an operation history of a document to be operated, it is necessary to designate the acquired document as an operation history recording target.

  Japanese Patent Laid-Open No. 2004-133867 dramatically increases the convenience of using an operation history related to a computerized document in the system for managing documents outside the system such as paper documents output from the system. Techniques for improving the above are disclosed.

The conventional technique disclosed in Patent Document 1 is a technique for notifying a user of whether or not a document has already been output and when and who has output it based on historical information about the document managed in advance. , Shows how to use the operation history.
JP-A-11-249777

  SUMMARY OF THE INVENTION An object of the present invention is to provide an operation history management system and program that can track an operation history of a document to be operated by using the operation history of the document.

  In order to achieve the above object, the invention of claim 1 shows that the document is represented in a plurality of formats in a response message from the document providing apparatus that provides the operation target document to the operation request source of the document. Determination means for determining whether or not the document is indicated in at least one format, and the determination means indicates that the document is represented in a plurality of formats in the response message. Is calculated, the first calculation means for calculating a first calculation value by applying an arithmetic expression to the document, and the first calculation value calculated by the first calculation means Operation history information generating means for generating operation history information including a component as a constituent element, and calculating the second calculated value by applying the arithmetic expression to the operation history information generated by the operation history information generating means The response message with the second calculation means, the reference information generation means for generating the reference information including the second calculation output value calculated by the second calculation means, and the reference information generated by the reference information generation means Response message transmitting means for generating a new response message by replacing the document and transmitting it to the request source of the operation target document.

Further, the invention of claim 2 is a determination means for determining whether or not information specifying the document is included in a response message from the document providing apparatus that provides the operation target document to the operation request source of the document;
When the determination means determines that the information specifying the document is included in the response message response message, a first calculation value is calculated by applying an arithmetic expression to the document indicated by the information. Calculation means, operation history information generation means for generating operation history information including the first calculated value calculated by the first calculation means as a component, and operation history information generated by the operation history information generation means Second calculation means for calculating a second calculation value by applying the calculation formula to the reference, and reference information generation means for generating reference information including the second calculation output value calculated by the second calculation means And a response message transmission unit that generates a new response message including the reference information generated by the reference information generation unit and transmits the response message to the operation request source of the document. To.

The invention of claim 3 shows that the document is represented in a plurality of formats in a response message from the document providing apparatus that provides the operation target document to the operation request source of the document. Determining means for determining whether or not the document is indicated in one format; the determining means indicates that the document is represented in a plurality of formats in the response message, and the document is indicated in at least one format; A first calculation unit that calculates a first calculation value by applying an arithmetic expression to the document, and the first calculation value calculated by the first calculation unit is used as a constituent element. An operation history information generating unit that generates operation history information including a second operation value that is calculated by applying the arithmetic expression to the operation history information generated by the operation history information generating unit. Output means, reference information generating means for generating reference information including the second calculation output value calculated by the second calculating means, and replacing the response message document with the reference information generated by the reference information generating means. and characterized in that to generate a new response message intended to function as a response message sending means for sending the operation request source of the document Te.

According to a fourth aspect of the present invention, there is provided a judging means for judging whether the computer includes information specifying the document in a response message from the document providing apparatus that provides the operation target document to the operation request source of the document. When the determination means determines that the information specifying the document is included in the response message, the first calculation value is calculated by applying an arithmetic expression to the document indicated by the information. 1 calculation means, operation history information generation means for generating operation history information including the first calculation value calculated by the first calculation means as a component, and operation history information generated by the operation history information generation means Second calculation means for calculating a second calculation value by applying the calculation formula to the reference information, and generating reference information including the second calculation output value calculated by the second calculation means. Reference information generating means for, characterized in that the to function as a response message sending means for sending the operation request source of the document to generate a new response message containing a reference information generated by the reference information generating unit And

  According to the first aspect of the present invention, the operation history of the provided document can be recorded without changing the configuration of the system for managing the operation history of the document operated using the reference information. There is an effect of being able to track.

  According to the second aspect, the operation history of the provided document can be recorded without changing the configuration of the system for managing the operation history of the document operated using the reference information, and the document is traced. There is an effect that it becomes possible.

  According to claim 3, the operation history of the provided document can be recorded without changing the configuration of the system that manages the operation history of the document operated using the reference information, and the document is traced. There is an effect of being able to do it.

  According to claim 4, the operation history of the provided document can be recorded without changing the configuration of the system that manages the operation history of the document operated using the reference information, and the document is traced. There is an effect that it becomes possible.

  Hereinafter, an operation history management system and program according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an example of a system configuration diagram of a document operation history management system configured by applying an operation history management system and program according to an embodiment of the present invention.

  1, the operation history management system includes a client PC 100, an information providing device 200 (hereinafter referred to as “WEB server 200”), an operation history management device 300, and a proxy server 400. 2 also shows the configuration of the operation history management system, which is similar to FIG. 1 and includes a client PC 100, a WEB server 200, and an operation history management device 300.

  However, in the configuration of FIG. 2, the operation history management apparatus 300 performs the processing in the proxy server 400 shown in FIG. 1.

  The operation history management system can be realized with any of the configurations of FIGS. 1 and 2, but the following description will be given taking as an example a case where the operation history management system is realized with the configuration of FIG.

  This operation history management system is a system in which the operation history management apparatus 300 manages the operation history of electronic information to be operated by the client PC 100. The electronic information to be operated is information processed by a WEB application installed in the WEB server 200 and is, for example, an electronic document, an image, a moving image file, and the like, and is hereinafter referred to as “document”.

  In the operation history management apparatus 300 (hereinafter referred to as “DH (Document History) server 300”), a calculation value calculated by applying a predetermined arithmetic expression to the operation target document is used as document identification information, and the identification information The document operation history is managed for each.

  This identification information is a calculated value calculated by applying an arithmetic expression to the entire document, and is calculated based on the content of the document. That is, when the content of the document is changed, new identification information is calculated for the changed content. An example of an arithmetic expression at this time is a hash function, for example, and a hash value calculated by applying this hash function to a document is identification information for identifying the document.

  When the document is operated using the client PC 100 and the content is changed, the DH server 300 associates the identification information calculated from the changed document with the identification information of the document before the change, thereby Manage the history of operations performed. This identification information is hereinafter referred to as “document ID” and is represented by a hash value or the like.

  The operation history managed by the DH server 300 is information recorded by operating the document using the reference information. This reference information is also referred to as “reference”, and the document can be directly referred to. Information. The reference includes a document ID that identifies the document.

  This reference is information that is generated by the proxy server 400 when the client PC 100 receives provision of a document from the WEB server 200, and that allows the client PC 100 to operate the document through the generated reference.

  In this operation history management system, the client PC 100 receives electronic information from the WEB server 200 through WEB communication between the client PC 100 and the WEB server 200 performed via the proxy server 400. At this time, the proxy server 400 generates reference information for the electronic information based on the information from the WEB server 200, and the operation history management apparatus 300 manages the operation history for the reference information. The electronic information after the operation can be traced from the history information.

  The client PC 100 is equipped with a WEB browser, and a document managed by the WEB server 200 is requested using the WEB browser. The proxy server 400 is specified as a request transfer destination in the setting information of the WEB browser, and the request from the client PC 100 is transmitted to the WEB server 200 via the proxy server 400.

  Communication between the client PC 100 and the WEB server 200 can be performed using, for example, an HTTP (HyperText Transfer Protocol) protocol on TCP / IP (Transmission Control Protocol / Internet Protocol), and when this HTTP protocol is used, the client PC 100 can be communicated. Sends a HTTP request message to the web server 200 (proxy server 400) to request a document.

  An example of this HTTP request message is shown below. A line number used for explanation is shown at the left end.

01 GET http: // a / p / HTTP 1.1
02 Accept: image / gif, image / jpeg, multipart / mixed, multipart / alternative,
03 Accept-Language: en
...
Line 01 shows a method that represents a document acquisition request, line 02 shows the types of data (documents) that can be accepted for that request, and line 03 shows an acceptable language. Is shown.

This HTTP request message is indicated to be transmitted to the proxy server 400 indicated by the destination information “a” by “http: // a / p /” indicated on the 01st line. Further, the proxy server 400 performs processing for changing the destination information “a” of the HTTP request message to “t”, which is the destination information of the WEB server 200. In the present embodiment, a proxy server that forwards a request in correspondence with a specific document management system (information providing apparatus) is shown, but the present invention is not limited to this, and of course, an arbitrary WEB server set by a WEB browser is used. It is also possible to adopt a configuration for transferring a request. In this case, it is not necessary to replace the destination information (host name).
The HTTP request message after the change is as follows.

01 GET http: // t / p / HTTP 1.1
02 Accept: image / gif, image / jpeg, multipart / mixed, multipart / alternative, ~ / ~
03 Accept-Language: en
...
That is, the destination information of “http: // t / p /” shown on the 01st line is changed from “a” before change to “t”.

  As a result, the HTTP request message is transferred to the WEB server 200 indicated by the destination information “t”, and processed by the WEB application installed in the WEB server 200. Details of processing performed by the WEB server 200 will be described below.

  When receiving the HTTP request message from the client PC 100 via the proxy server 400, the WEB server 200 analyzes the request for the HTTP request message, and sends an HTTP response message including data (document) of the WEB application indicated by “p”. create. The destination of the HTTP response message is the proxy server 400 that has transmitted the HTTP request message to the WEB server 200.

  The created HTTP response message is as follows.

01 HTTP / 1.1 200 OK
02 Date:
03 Server:
04 Last-Modified:
05 Content-Type: multipart / mixed boundary = "-= border_line"
06 ・ ・ ・
07-= border_line
08 Content-Type: text / plain: charset = ISO-2022-JP
09 Content-Transfer-Encoding: 7bit
10 test message
11-= border_line
12 Content-Type: application / foo: name = "sample.foo"
13 ···
14 aabbcc ...
15 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 123eab
16-= border_line--
The 01st line represents the processing result in the WEB application for the request of the HTTP request message, and the 02nd to 04th lines indicate the date and time when the process for the request was performed, the name of the WEB server 200, and the like. In the 05th line, an entity field “Content-Type” for notifying the type of data (document) to be transmitted to the client PC 100 is shown, “multipart / mixed” is shown as the media type, and the boundary of the media type part is shown. It is indicated that the value of the argument “boundary” is “-= border_line”.

  Since “-= border_line” indicates the boundary of the part, the 07th, 11th and 164th lines are the boundaries. That is, the first part is from the 08th line to the 10th line between the boundary of the 07th line and the 11th line, and the boundary between the 11th line and the 16th line The 12th to 15th lines in between show the second part.

  The first part is text data because the media name of the field name "Content-Type" on line 08 is shown as "text / plain", and the second part is line 12 Since “application / foo” is indicated in the media type of the field name “Content-Type”, it indicates that the document is “sample.foo” created by the “foo” application.

  The contents of this document “sample.foo” are shown in the 14th and 15th lines.

  The proxy server 400 that has received such an HTTP response message determines whether it is necessary to generate a reference from the HTTP response message and manage the operation history. If it is determined by this determination processing that the operation history needs to be managed, a document reference indicated in the HTTP response message is generated and the operation history is registered in the DH server 300.

  In this determination process, it is determined whether the media type indicated by the field name “Content-Type” of the entity constituting the HTTP response message is “multipart / type” and at least one part is specified. In the HTTP response message described above, since the media type of the field name “Content-Type” is “multipart / type” and two parts are shown as shown in the 05th line, the data reference for the part is shown. And a new HTTP response message is generated by replacing the part of the HTTP response message with the generated reference.

  Further, in this determination process, if the above determination process does not apply, a process of determining whether “Content-Type” is designated in the entity field may be performed. When the field “Content-Type” is specified by this determination processing, a reference of the part part constituting the HTTP response message is generated, and an HTTP response message including the generated reference is generated.

  The proxy server 400 generates a new HTTP response message by replacing the part indicated in the HTTP response message received from the WEB server 200 with the generated reference, and transmits the new HTTP response message to the client PC 100.

  As a result, the client PC 100 receives the HTTP response message in which the reference is specified, and can operate the corresponding document by using the reference indicated by the HTTP response message.

  A reference generation method at this time will be described below with reference to FIG. In the process of generating the reference, a document operation history for the reference is generated.

  The proxy server 400 transmits the document for which the reference is generated and the operation history of the document created in the reference generation process to the DH server 300.

  Note that the reference can be created not by the proxy server 400 but by the client PC 100. In the client PC 100, for example, an instruction is given by selecting “Create reference” from the context menu.

  Similar processing is performed when a reference is created by any device.

  FIG. 8A shows a document “sample.foo” for which a reference is to be generated, and a hash value is calculated by applying a hash function such as “SHA-256” to the entire document. The hash value calculated at this time is shown in FIG. 8B and indicates that the value is “bodyhash”. The hash value “bodyhash” is a content ID for identifying content that is the content of the document “sample.foo”.

  When the content ID “bodyhash” is calculated, the content ID and the content of the document are associated with each other and registered in the DH server, and an operation history in XML (Extensible Markup Language) format including the calculated content ID “bodyhash” is recorded. Create information. An example of this operation history information is shown below.

  A line number used for explanation is shown at the left end of each step of the operation history information shown below.

01 <doc>
02 <body> bodyhash </ body>
03 <base></base>
04 <info>
05 <user> user_A </ user>
06 <time> time_A </ time>
07 <method> create </ method>
08 </ info>
09 </ doc>
This operation history information is information in XML format surrounded by the <doc> tag on the 01st line to the </ doc> tag on the 09th line. The content ID “bodyhash” calculated by applying a hash function to the document is specified as the content of the <body> element described on the 02st line, and the content of the <base> element on the 03rd line is described below. A value of the document ID “did” calculated by performing the arithmetic processing is designated.

  The document ID “did” is information calculated from the operation history information of the document from which the content ID “bodyhash”, which is the content of the <body> element described in the 02 line, is calculated, and manages the operation history for the document Used as information.

  In addition, the information of the user who operated the document is specified in the contents of the <user> element on the 05th line of the <info> element from the 04th line to the 08th line, and "user_A" is specified as an example. ing. Also, the time information when the document is uploaded to the DH server 200 is specified as the content of the <time> element on the 06th line, and “time_A” is specified as an example. Furthermore, information indicating the type of operation performed on the document is specified in the content of the <method> element on the 07th line.

  As the contents specified in the <method> element on the 07th line, an operation for newly creating a reference for the operation target document (in the above example, an operation for selecting “create reference” from the context menu, or a web server 200) "Create" indicating that the document has been acquired from), "modified" indicating that the document corresponding to the reference has been updated or edited, and "not modified" indicating that the document has been referenced or viewed "Printed" indicating that a print operation has been performed on the document.

  When a document whose operation history is not registered in the DH server 300 is operated, “create” is designated like the content of the above <method> element because it is an operation for newly creating a reference.

  Note that when the content of the <method> element shown in the 07th line is “create”, that is, when operation history information in XML format is newly created, the <base> element is empty. This is because the content of the <base> element is a value calculated by calculating already created operation history information.

In this manner, operation history information in XML format is newly created in the reference creation process. (Fig. 8 (c))
In order to create the reference, the document ID “for the operation history information is subsequently used by using a hash function that calculates the content ID of the content“ bodyhash ”of the <body> element shown on the 02nd line of the operation history information in the XML format. "did" is calculated. In the example shown above, the document ID “did” is obtained by hashing the operation history information in XML format enclosed in <doc> tags from the 01st line to the 08th line with the hash function “SHA-256”. calculate. (Fig. 8 (d))
Then, a reference including the calculated document ID “did” is generated.

  FIG. 8E shows an example in which a reference indicated by the extension “yui” is created. In this example, the file name of the reference corresponding to the document with the file name “sample.foo” is “sample.foo.yui”. Further, in the reference shown in FIG. 8E, a rotation arrow is shown at the upper right of the icon to indicate that it is a reference.

  The operation history information generation process when generating the reference is configured to be performed by the DH server 300, and the history hash value “did” calculated by processing by the DH server 300 is stored in the proxy server 400 by the DH server 300. It may be configured to generate a reference in response.

  Next, details of processing for specifying a document using the reference created as described above will be described.

  First, the document ID “did” included in the reference is extracted, and the operation history information associated with the document ID “did” is specified. The operation history information at this time is managed by the DH server 200 in association with the document ID “did”.

  Subsequently, the content ID “bodyhash” designated by the <body> element of the identified operation history information is acquired. This element “bodyhash” is a hash value of the document content, and the DH server 200 specifies the content of the document “sample.foo” corresponding to the content ID “bodyhash”. This document “sample.foo” is a document associated with the “foo” application.

  Thus, a document is specified from the created reference.

  The operation history created when a reference operation is performed on the document indicated by the operation history information is as follows.

01 <doc>
02 <body> bodyhash2 </ body>
03 <base> did </ base>
04 <info>
05 <user> user_A </ user>
06 <time> time_B </ time>
07 <method> not modified </ method>
08 </ info>
09 </ doc>
A content ID “bodyhash2” is calculated by applying a hash function such as “SHA-256” to the contents of the operated document. Since the operation content performed by the client PC 100 is a browsing / referencing operation, the calculated content ID “bodyhash2” is created by confirming that it is the same as the content ID “bodyhash” before referring / viewing. Since the calculated hash values are the same, the hash value shown in line 02 is the same value as the content ID “bodyhash” before the reference operation.

  Incidentally, when the calculated content ID “bodyhash2” is different from the content ID “bodyhash” before the operation, it indicates that an operation other than the reference / viewing has been performed on the document.

  The document ID “did”, which is the content of the <base> element on line 03 of the operation history information, is a document ID calculated by applying a hash function to the operation history before the document reference / view operation. The document ID “did” specified in the reference is set. In addition, “time_B” which is the content of the <time> element on the 06th line indicates the time when the document was uploaded to the DH server 200, and the document of the <method> element on the 07th line can be read and browsed only. “Not modified” is displayed to indicate that has not been edited or changed.

  The DH server 200 manages the operation history information generated in this way as operation history information for each document. The document ID “did2” is calculated by applying a hash function such as “SHA-256” to the operation history information.

  FIG. 3 is a diagram showing a schematic configuration of the operation history management system in the embodiment of the present invention.

  FIG. 3 shows each node in the system configuration shown in FIG.

  The client PC 100 has a configuration including a WebClient processing unit 101 and a DH_Client processing unit 102. The DH_Client processing unit 102 enables tracking of a document based on an operation history managed by the DH server 300 through mutual communication with the DH server 300. Furthermore, the DH server 300 manages the operation history for the local document created by the client PC 100 itself.

  The DH server 300 manages the operation history information in the XML format as described above, and manages the relationship between the operation history information in a tree structure as shown in FIG.

  In addition, the WebClient processing unit 101 of the client PC 100 performs WEB communication with the WEB server 200. The WEB server 200 includes a WebApplication processing unit 201. The WebApplication processing unit 201 performs predetermined application processing based on a request from the WebClient processing unit 101 of the client PC 100, and returns a result thereof.

  That is, when the WebClient processing unit 101 of the client PC 100 transmits an HTTP request message to the WebApplication processing unit 201 of the WEB server 200, the WebApplication processing unit 201 of the WEB server 200 performs application processing, and the WebClient of the client PC 100. An HTTP response message is transmitted to the processing unit 101.

  For example, when realizing a document management application process in which the WebApplication processing unit 201 manages a document, when the WebApplication processing unit 201 of the WEB server 200 receives an HTTP request message in which a desired document is specified, the WebApplication processing unit 201 manages it. The specified document is identified from the documents, and an HTTP response message specifying the document is returned to the WebClient processing unit 101 of the requesting client PC 100.

  At this time, each message is performed via the proxy server 400.

  The proxy server 400 includes an RDHS Web Connector processing unit 401. Does the RDHS Web Connector processing unit 401 need to manage an operation history by the HTTP response message received from the WEB server 200 by the determination processing as described above? Judging.

  If it is determined that it is necessary to manage the operation history, a document reference included in the HTTP response message is generated, and data (document) is transmitted so that the DH server 300 can manage the operation history of the document. .

  In addition, when the RDHS Web Connector processing unit 401 generates a reference, a new HTTP response message including the reference is generated and transmitted to the WebClient processing unit 101 of the client PC 100.

  The client PC 100 can operate the requested document using the reference.

  When a document is operated using a reference acquired by the client PC 100, the DH_Client processing unit 102 specifies an operation history for the document. After the document operation is completed, the DH_Client processing unit 102 performs a process of applying a hash function to the document after the operation, calculates a hash value, and creates an operation history of the operation. The DH server 300 manages the operation history by associating the hash value indicated by the operation history of the document before the operation with the hash value of the created operation history.

  Thereby, the mutual relationship of the operation history information by the hash value as shown in FIG. 9 is managed.

  FIG. 4 is a block diagram showing a detailed functional configuration of the operation history management system according to the embodiment of the present invention.

  4, the operation history management system includes a document request unit 10, an operation history processing unit 11, a document operation unit 12, a calculation processing unit 13, a storage unit 14, a request processing unit 20, a document management unit 21, an information control unit 30, An operation history management unit 31, an operation history target management unit 32, a communication control unit 40, a message analysis unit 41, a reference generation unit 42, a response message generation unit 43, a determination unit 44, a calculation unit 45, and an operation history generation unit 46 are provided. Configured.

  In FIG. 1, the processing by the electronic information request unit 10, the operation history processing unit 11, the document operation unit 12, the arithmetic processing unit 13, and the storage unit 14 is realized by the client PC 100, and the processing by the request processing unit 20 and the document management unit 21 is performed. Realized by the WEB server 200, the processing by the information control unit 30, the operation history management unit 31, and the operation history target management unit 32 is realized by the DH server 300, the communication control unit 40, the message analysis unit 41, the reference generation unit 42, the response The example which implement | achieves the process by the message production | generation part 43, the judgment part 44, the calculating part 45, and the operation history production | generation part 46 with the proxy server 400 is shown.

  As described above with reference to FIG. 1, this operation history management system is a system that enables an operation target document to be operated by reference and manages an operation history of a document operated using the reference by WEB communication. This is a system that can also manage the operation history of a document to be operated.

  When the document operation unit 12 is used to instruct the generation of a reference for the operation history of the document stored in the storage unit 14, a processing request is made to the operation history processing unit 11, and the operation history processing unit 11 sends a request to the arithmetic processing unit 13. Requests calculation of document ID. The arithmetic processing unit 13 calculates a hash value “bodyhash” by applying a hash function such as “SHA-256” to the document, and responds to the operation history processing unit 11 as a content ID.

  The operation history processing unit 11 generates XML-format operation history information including the received content ID, and transmits the operation history information to the arithmetic processing unit 13. The arithmetic processing unit 13 applies the hash function used when calculating the content ID to the operation history information, and calculates the document ID “did”.

  The calculated document ID “did” is returned to the operation history processing unit 11, and the operation history processing unit 11 generates a reference including the document ID “did”. Then, the operation history information is transferred to the information control unit 30 configured by the DH server 300 or the like.

  When the information control unit 30 determines the received information and determines that the operation history information generated by the operation history processing unit 11 by the client PC 100 has been received, the information control unit 30 stores the operation history information in the operation history management unit 31.

  The operation history management unit 31 manages the operation history in a tree structure as shown in FIG.

  FIG. 9 shows the relationship between the document before the operation and the document after the operation. The content of the document in each state is identified by the content ID “bodyhash” calculated by applying the hash value to the content of the document. These are represented as nodes in FIG. A document in which an operation history is newly created is represented by a node (901) located at the top of the tree structure, and a new node is generated by operating the document.

  In the example shown in FIG. 9, a node (902) that represents a document that has been browsed by performing a browsing operation and an editing operation on the document of the node (901), and a node that represents a document that has been edited (903) are arranged in the lower hierarchy of the node (901).

  The node (901), the node (902), and the node (903) include a hash function in the operation history information in XML format including the content ID “bodyhash” calculated by applying the hash function to the contents of the document of the node (901). Are related by the document ID “did” calculated by applying.

  Similarly, by referring to and editing the document indicated by the node (903), the node (904) and the node (905) are generated and arranged in the lower hierarchy of the node (903). Then, by referring to the document indicated by the node (905) three times, the node (906), the node (907), and the node (908) are arranged in the lower hierarchy of the node (905).

  In this way, the operation history of the document is managed.

  At this time, a case where the client PC 100 acquires a document by WEB communication with the WEB server 200 will be described.

  The document request unit 10 of the client PC 100 generates an HTTP request message in order to request electronic information (document) in the WEB server 200. The generated HTTP request message is transferred to the communication control unit 40. The document in the HTTP request message generated by the document request unit 10 is a document specified using the document operation unit 12 and is specified on the WEB browser.

  The communication control unit 40 that has received the HTTP request message from the document request unit 10 controls transmission / reception of the document indicated by the HTTP request message. The communication control unit 40 transfers the received HTTP request message to the electronic information processing unit 20. The request processing unit 20 is configured by a WEB application or the like, and performs processing based on the content specified in the HTTP request message. For example, when a document acquisition request is indicated in the HTTP request message, the corresponding document is acquired from the document management unit 21.

  Then, the request processing unit 20 generates an HTTP response message based on the processing content. When a document is acquired from the document management unit 21, an HTTP response message including the document is generated.

  In addition, the generated HTTP response message is transmitted to the communication control unit 40 as the transmission source.

  When receiving the HTTP response message, the communication control unit 40 transfers the HTTP response message to the message analysis unit 41. The message analysis unit 41 extracts various information constituting the message by analyzing the received HTTP response message. The message analysis unit 41 includes a determination unit 44, and determines whether it is necessary to manage the operation history from the extracted information.

  The determination unit 44 determines whether the media type indicated by the field name “Content-Type” of the entity constituting the received HTTP response message is “multipart / type” and at least one part is specified. To do.

  When the determination unit 44 determines that it is necessary to manage the operation history, the message analysis unit 41 generates the operation history and the reference of the part indicated by the part. The analyzed information is transferred to the unit 43.

  When the determination unit 44 determines that it is not necessary to manage the operation history, the message analysis unit 41 responds to the communication control unit 40 and the HTTP response message received from the request processing unit 20 by the communication control unit 40. Is sent to the document request unit 10.

  The reference generation unit 42 that has received the information obtained by analyzing the HTTP response message from the message analysis unit 41 performs reference generation processing through mutual communication with the calculation unit 45 and the operation history generation unit 46.

  When generating a reference, a document indicated by the HTTP response message part is transmitted to the calculation unit 45, and the calculation unit 45 applies a hash function to calculate a content ID that is a hash value. The calculated content ID is transmitted to the operation history generation unit 46, and the operation history information in the XML format as described above is generated.

  The generated operation history information is transmitted to the calculation unit 45, and the calculation unit 45 calculates a hash value by using a hash function applied to the document with respect to the operation history information. The hash value is transferred to the reference generation unit 42, and the reference generation unit 42 generates a reference including the hash value.

  At this time, the operation history generation unit 46 registers the operation history in the operation history management unit 31 configured by the DH server 300 or the like via the communication control unit 40 with the generated operation history information.

  Then, the reference generation unit 42 transmits the generated reference to the response message generation unit 43, and the document indicated by the part of the HTTP response message used for generating the reference via the communication control unit 40 is an operation history target management unit. 32 and managed by the operation history object management unit 32.

  Subsequently, the response message generation unit 43 generates a new HTTP response message from the HTTP response message received from the message analysis unit 41 and the reference received from the reference generation unit 42.

  In this process, a new HTTP response message is generated by replacing the HTTP response message part with the generated reference. The response message generation unit 43 transmits the generated HTTP response message to the document request unit 10 that has requested the document via the communication control unit 40.

  FIG. 5 is a sequence diagram showing process transition of the operation history management system in the embodiment of the present invention.

  FIG. 5 is a sequence in the system configuration shown in FIG. 1, and when a user designates a document to be processed using the WEB browser of the client PC, the document is requested by the “WebClient” software service installed on the client PC. An HTTP request message to be generated is generated (501).

  This HTTP request message is a message configured in a message format according to the HTTP protocol, and “http: // a / p /” is specified as an element constituting the HTTP request message, for example.

  In this case, the information for identifying the client PC on the network is “k”, the information for identifying the proxy server on the network is “a”, and the information for identifying the WEB server on the network is “t”. This is an example of performing data communication using the HTTP protocol when “p” is used for a WEB application that requests processing and data used in the WEB application.

  That is, in the WEB browser setting of the client PC, a proxy server is designated as a proxy server, and data communication with the WEB server is performed via the proxy server.

  Subsequently, the HTTP request message generated by the client PC is transmitted to the proxy server (502).

  The proxy server that has received the HTTP request message rewrites the destination from the proxy server “a” to the WEB server “t” and generates a new message (hereinafter referred to as “HTTP request message regeneration process”). (503).

  Through this HTTP request message regeneration process, “http: // a / p /”, which is a component of the HTTP request message received by the proxy server, is rewritten to “http: // t / p”. An HTTP request message is generated.

  Then, the generated HTTP request message is transmitted to the WEB server (504).

  The WEB server that has received the HTTP request message performs a predetermined application process using the WEB application designated by the message and the data “p” (505). Subsequently, an HTTP response message reflecting the processing result derived by this application processing is generated (506) and transmitted to the proxy server (507).

  As an example of the HTTP response message, there is an HTTP response message used in the description of FIG.

  The proxy server that has received such an HTTP response message analyzes the HTTP response message (508), extracts a predetermined component, and uses the component to record an operation history for the document. A process for judging whether or not is performed (509).

  If it is determined that it is necessary to record the operation history by this determination, processing for generating a reference of the component used for the determination is performed (510). In addition, operation history information is generated using the information used to generate the reference (511).

  Then, the generated operation history information and the document are transmitted to the DH server (512), and the DH server receives these to register the document and the operation history information (512).

  Further, the proxy server regenerates a new HTTP response message including the generated reference (514) and transmits it to the client PC (515).

  FIGS. 6 and 7 are flowcharts showing processing in the proxy server when an HTTP response message is received from the WEB server in the sequence shown in FIG.

  First, FIG. 6 is a flowchart showing an example of a detailed flow of processing by the proxy server of the operation history management system in the embodiment of the present invention.

  In FIG. 6, when an HTTP response message is received from the WEB server, the process is started, and by analyzing the received HTTP response message, at least “Content-Type” of the field name indicating the type of entity constituting this message is set. Specify (601).

  That is, the information is not limited to this information, and preset information (such as a field other than the “Content-Type” field) may be specified by analysis.

  Subsequently, it is determined whether the media type indicated by the field name “Content-Type” specified by the analysis process is “multipart type” and at least one part of the media type “multipart type” is specified. (602).

  This determination process is a determination process when the MIME (Multipurpose Internet Mail Extensions) technology defined by RFC (Request For Comments) is used for WEB access (WEB communication) using the HTTP protocol.

  When it is determined by this determination processing that “multipart type” is not indicated as the media type or the media type “multipart type” is indicated but no part is specified (NO in 602), the policy server determines that the WEB The HTTP response message itself received from the server is passed through to the client PC (608).

  On the other hand, when it is determined that the media type indicated in the specified field “Content-Type” is “multipart type” and at least one part is specified (YES in 602), the specification is made. A part is cut out to generate a reference (reference) (603).

  Subsequently, the part is replaced with the generated reference to generate a new HTTP response message including the reference (604).

  Then, operation history information including information used by the generation of the reference is generated (605), and the generated operation history information is transmitted to the DH server (606). Further, the generated HTTP response message is transmitted to the client PC (607).

  Next, FIG. 7 is a modified example of the flowchart shown in FIG. 6, and is a flowchart showing an example of a detailed flow of processing by the proxy server of the operation history management system in the embodiment of the present invention.

  In FIG. 7, when an HTTP response message is received from the WEB server, the process is started. By analyzing the received HTTP response message, at least the “Content-Type” of the field name indicating the type of entity constituting this message is set. Specify (701).

  That is, the information is not limited to this information, and preset information (such as a field other than the “Content-Type” field) may be specified by analysis.

  Subsequently, whether the media type indicated by the field name “Content-Type” identified by this analysis process is “multipart type” and at least one part of the media type “multipart type” is specified. Is determined (702).

  When it is determined by this determination processing that the media type indicated in the specified field “Content-Type” is “multipart type” and at least one part is specified (YES in 702), This is the same as the processing shown in the flowchart of FIG.

  On the other hand, if it is determined that “multipart type” is not indicated as the media type (NO in 702), then one of the media types is specified in the specified field name “Content-Type”. (708).

  If any media type is specified in the field name “Content-Type” by this determination processing (YES in 708), a reference of the part portion indicated by the media type is generated (710).

  Then, “multipart” is newly designated as the media type of the field “Content-Type”, and a new HTTP response message in which the generated reference is set is generated (711).

  If the media type is not specified in the specified field “Content-Type” or if the field “Content-Type” cannot be specified in the first place (708), the name of the document is subsequently included in the HTTP response message. It is determined whether it is designated (709). If the name of the document is specified (YES in 709), the process of determining whether the media type is specified in the field name “ContentTypes” (708) is the same as the case where the media type is specified (708). Do the same process. In other words, whether or not the name of the document is designated does not matter whether the media type is designated or not.

  On the other hand, if the electronic name is not designated (NO in 709), the HTTP response message itself received from the WEB server is passed through to the client PC (707).

  By the way, when the HTTP message is regenerated (704, 711), as in the processing shown in FIG. 6, first, operation history information including information used for reference generation is generated (705). The operation history information is transmitted to the DH server (706). Next, the generated HTTP response message is transmitted to the client PC (707).

  Note that the present invention relates to a recording medium (CD-ROM, DVD-ROM, etc.) storing a program for causing the operation history management system having a communication function to execute the above-described operation or to configure the above-described means. It is also possible to configure an operation history management system that executes the above-described processing by installing a program in a computer and executing it. A computer constituting the operation history management system is connected to a CPU (Central Processor Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and a hard disk via a system bus. The CPU performs processing using the RAM as a work area according to a program stored in the ROM or the hard disk.

  The medium for supplying the program may be a communication medium (a medium for temporarily or fluidly holding the program such as a communication line or a communication system). For example, the program may be posted on an electronic bulletin board (BBS: Bulletin Board Service) of a communication network and distributed via a communication line.

  The present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate modifications within a range not changing the gist thereof.

1 is an example of a system configuration diagram of a document operation history management system configured by applying an operation history management system and a program according to an embodiment of the present invention. 1 is an example of a system configuration diagram of a document operation history management system configured by applying an operation history management system and a program according to an embodiment of the present invention. The figure which shows schematic structure of the operation log | history management system in embodiment of this invention. The block diagram which shows the detailed functional structure of the operation history management system in embodiment of this invention. The sequence diagram which shows the process transition of the operation history management system in embodiment of this invention. The flowchart which shows the process in a proxy server at the time of receiving the HTTP response message from a WEB server in the sequence shown in FIG. FIG. 7 is a modified example of the flowchart shown in FIG. 6 and shows an example of a detailed flow of processing by the proxy server of the operation history management system in the embodiment of the present invention. The figure which shows the order which produces | generates the reference of a document. The figure which represented the management system of the operation history with the tree structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Document request part 11 Operation history process part 12 Document operation part 13 Arithmetic process part 14 Storage part 20 Request process part 21 Document management part 30 Information control part 31 Operation history management part 32 Operation history object management part 40 Communication control part 41 Message analysis Unit 42 reference generation unit 43 response message generation unit 44 determination unit 45 calculation unit 46 operation history generation unit 100 client PC
200 WEB server 300 DH server 400 proxy server

Claims (4)

A response message from the document providing apparatus that provides the operation target document to the operation request source of the document indicates that the document is represented in a plurality of formats, and whether the document is represented in at least one format. A judging means for judging;
When the determination means indicates that the document is represented in a plurality of formats in the response message, and it is determined that the document is represented in at least one format, an arithmetic expression is applied to the document. First calculating means for calculating a first calculation value;
Operation history information generating means for generating operation history information including the first calculated value calculated by the first calculating means as a component;
Second calculation means for calculating a second calculation value by applying the calculation formula to the operation history information generated by the operation history information generation means;
Reference information generating means for generating reference information including the second calculation output value calculated by the second calculating means;
An operation history management comprising: response message transmitting means for generating a new response message by replacing the document of the response message with the reference information generated by the reference information generating means and transmitting the new response message to the request source of the operation target document. system. A determination unit that determines whether information specifying the document is included in a response message to the operation request source of the document from the document providing apparatus that provides the operation target document;
When the determination means determines that the information specifying the document is included in the response message response message, a first calculation value is calculated by applying an arithmetic expression to the document indicated by the information. Means for calculating
Operation history information generating means for generating operation history information including the first calculated value calculated by the first calculating means as a component;
Second calculation means for calculating a second calculation value by applying the calculation formula to the operation history information generated by the operation history information generation means;
Reference information generating means for generating reference information including the second calculation output value calculated by the second calculating means;
An operation history management system comprising: a response message transmission unit that generates a new response message including the reference information generated by the reference information generation unit and transmits the response message to the operation request source of the document. Computer
A response message from the document providing apparatus that provides the operation target document to the operation request source of the document indicates that the document is represented in a plurality of formats, and whether the document is represented in at least one format. Judgment means to judge,
When the determination means indicates that the document is represented in a plurality of formats in the response message, and it is determined that the document is represented in at least one format, an arithmetic expression is applied to the document. First calculation means for calculating a first calculation value;
Operation history information generating means for generating operation history information including the first calculated value calculated by the first calculating means as a component;
Second calculation means for calculating a second calculation value by applying the calculation formula to the operation history information generated by the operation history information generation means;
Reference information generating means for generating reference information including the second calculation output value calculated by the second calculating means;
An operation history management program for functioning as a response message transmission unit that replaces the document of the response message with the reference information generated by the reference information generation unit and generates a new response message and transmits it to the operation request source of the document . Computer
A determination unit that determines whether or not information specifying the document is included in a response message to the operation request source of the document from the document providing apparatus that provides the operation target document;
When the determination means determines that the information specifying the document is included in the response message response message, a first calculation value is calculated by applying an arithmetic expression to the document indicated by the information. Means for calculating,
Operation history information generating means for generating operation history information including the first calculated value calculated by the first calculating means as a component;
Second calculation means for calculating a second calculation value by applying the calculation formula to the operation history information generated by the operation history information generation means;
Reference information generating means for generating reference information including the second calculation output value calculated by the second calculating means;
An operation history management program for functioning as a response message transmission unit that generates a new response message including the reference information generated by the reference information generation unit and transmits the new response message to the operation request source of the document.

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