JP3646624B2 - Shared data system, local data operation method in shared data system, and recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention uses a client-server configuration in which a plurality of clients are coupled to a common server, and at least a part of processing data is shared from the plurality of clients under the management of the server, and the shared data In the shared data system used by the users of each client, at least a part of the shared data is dynamically temporarily or permanently unshared or shared from other clients during system operation. The present invention relates to a shared data system, a data local operation method in the shared data system, and a computer-readable recording medium.
[0002]
[Prior art]
Using a client-server configuration in which a plurality of clients are coupled to a common server, at least a part of the processing data is shared from the plurality of clients under the management of the server, and the shared data is shared with each client. A system that can be used by other users is a shared data system. This type of shared data system shares data operations among multiple clients. This data sharing is realized by, for example, when a document is shared data, a character string data on a document and a change of character string or figure position data in a client are sequentially distributed to the server and other clients. ing.
[0003]
For example, Japanese Patent Application Laid-Open No. 11-306173 discloses a technology for mutual notification of access contents to shared document data in a sharing process in a system for editing shared document data by a plurality of users. Japanese Laid-Open Patent Publication No. 11-96159 discloses that priority editing and exclusive editing are controlled by giving priority to a related document of a hypertext document shared by a plurality of users using hyperlink association. It is disclosed that the shared document can be safely edited.
[0004]
That is, in Japanese Patent Application Laid-Open No. 11-306173, when a user edits a shared document, the editing content is notified to other users who share the document, and when a user views the shared document, the user It is disclosed that other users are notified that the shared document has been browsed. In this way, in Japanese Patent Laid-Open No. 11-306173, editing and browsing of the shared document can be mutually recognized among the sharing users.
[0005]
Japanese Patent Application Laid-Open No. 11-96159 discloses that the content and existence of an editing target document and a hyperlinked document group are guaranteed. For this purpose, Japanese Patent Application Laid-Open No. 11-96159 adds priority information to a document to be edited and a hyperlinked document group, thereby enabling safe editing by controlling the editing order and exclusive editing. Make it possible.
[0006]
[Problems to be solved by the invention]
In the shared data system as described above, when the unit of content on the document to be operated is composed of simple components such as character strings and figures, the data to be distributed is a unit such as color and coordinates. . In recent years, software componentization and modularization have progressed, and highly integrated components such as word processor (word processor) components or web browser components are becoming the unit of content. When such highly integrated parts are the unit of content, operating the functions of the content will change the internal data of the content, and these operations will also be subject to information sharing Become. When sharing a component with such a function, for example, when a user scrolls the screen of a component for viewing, if it is distributed as it is to a server or another shared client The operability of collaborative document editing may be impaired.
[0007]
That is, the problems in the conventional shared data system are as follows. First, the first problem is that in the case of content with advanced functions, the sharing state cannot be changed dynamically. The reason is that it is impossible to distinguish whether or not the content state change is necessary information as permanent data. The second problem is that the shared data cannot hold different data states between clients. The reason is that it is not possible to manage and maintain changes in the data state for each client or content.
[0008]
The present invention has been made in view of the above-described circumstances, and in a shared data system, a part of content data constituting data such as document data in a certain client is dynamically temporarily or during operation of the system. To provide a shared data system, a data local operation method in the shared data system, and a computer-readable recording medium that can be permanently unshared from other clients or shared with other clients With the goal.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a shared data system according to a first aspect of the present invention uses a client-server configuration in which a plurality of clients are coupled to a common server, and receives at least one of processing data from the plurality of clients. The shared data under the management of the server, and the shared data used by the users of the clients,
In each client, when adding content constituting the shared data, if it is desired to control the sharing of the content, a hierarchical context is created in the shared data, content information indicating the corresponding content, and Attribute control setting means for registering an attribute list indicating an attribute to be controlled in the content in the context;
In each of the clients, when the content constituting the shared data is not operated, the context corresponding to the content is not included, and the context corresponding to the content is included. If it is not included in the attribute list of the corresponding context and the context above it, exclusive control is performed so that the status cannot be changed for other clients by the access control list indicating the operation authority of the content. Then, the attribute is locally changed by the client, the change of the attribute is notified to the server and other clients, the data state is synchronized, the data is shared, and the content constituting the shared data is operated. , The context corresponding to that content If an attribute that is included and is changed by an operation is included in the attribute list of either the corresponding context or its upper context, the attribute is locally changed by the client, and the attribute is changed. Attribute change processing means for notifying and synchronizing the change to the server and other clients, and maintaining different attributes and data states from other clients;
It comprises.
[0010]
Each client is
A shared data holding unit for holding the shared data including the content and the access control list corresponding to the content;
A context holding unit for holding a context including the content information and the attribute list corresponding to each content of the shared data;
A data synchronization processing unit substantially including the attribute control setting unit and the attribute change processing unit;
May be included.
[0011]
In the shared data system according to the first aspect of the present invention, when each client desires to control the sharing of the content when the content constituting the shared data is added, the shared data system uses the attribute control setting means to execute the shared data. A hierarchical context is created, and content information indicating the corresponding content and an attribute list indicating an attribute to be controlled of the content are registered in the context. In each of the clients, the attribute change processing means controls the contents constituting the shared data. That is, the attribute change processing means includes the context corresponding to the content and the context corresponding to the content, but the attribute changed by the operation is the corresponding context and its higher order. If it is not included in the attribute list of the context, the exclusive control is performed so that the state cannot be changed with respect to another client by the access control list indicating the operation authority of the content, and the client locally The attribute is changed, the change of the attribute is notified to the server and other clients so that the data state is synchronized to share the data, and when the content constituting the shared data is operated, the context corresponding to the content is Attributes that are included and change by operation If it is included in the attribute list of any of the context and the context above it, the attribute is locally changed by the client, and the server and other clients are notified and synchronized with the change of the attribute The attribute and data state different from those of other clients are maintained. Therefore, in a shared data system, a part of content data constituting data such as document data in a client can be temporarily or permanently unshared from other clients during system operation, or It can be shared with other clients.
[0012]
A data local operation method in the shared data system according to the second aspect of the present invention is as follows.
Using a client-server configuration in which a plurality of clients are coupled to a common server, at least a part of the processing data is shared from the plurality of clients under the management of the server, and the shared data is shared with each client. A data local operation method in a shared data system used by users of
In each client, when adding content constituting the shared data, if it is desired to control the sharing of the content, a hierarchical context is created in the shared data, content information indicating the corresponding content, and An attribute control setting step of registering in the context an attribute list indicating an attribute to be controlled of content;
In each of the clients, when the content constituting the shared data is operated, if the context corresponding to the content is not included, and if the context corresponding to the content is included, the attribute that changes depending on the operation is If it is not included in the attribute list of the corresponding context and the context above it, exclusive control is performed so that the status cannot be changed for other clients by the access control list indicating the operation authority of the content. A data synchronization processing step for locally changing the attribute at the client, notifying the server and other clients of the change in the attribute, synchronizing the data state, and sharing the data;
Each client includes a context corresponding to the content when the content constituting the shared data is operated, and the attribute that is changed by the operation is the attribute of the corresponding context or a context above it. If it is included in the list, the attribute is changed locally at the client, and the server and other clients are not notified and synchronized with the change in the attribute. Attribute change processing step to be retained;
Have
[0013]
In the data local operation method in the shared data system according to the second aspect of the present invention, each client first wants to control sharing of the content when adding the content constituting the shared data. A hierarchical context is created in the shared data, and content information indicating the corresponding content and an attribute list indicating an attribute to be controlled of the content are registered in the context. Then, when the content constituting the shared data is operated, the context corresponding to the content is not included, and the context corresponding to the content is included, but the attribute that is changed by the operation is applicable If it is not included in the attribute list of the context and the context above it, the exclusive control is performed so that the state cannot be changed for other clients by the access control list indicating the operation authority of the content. The client locally changes the attribute, notifies the server and other clients of the change in the attribute, and synchronizes the data state to share the data. On the other hand, in each of the clients, when the content constituting the shared data is operated, the context corresponding to the content is included, and the attribute that is changed by the operation is any of the corresponding context and its upper context. If it is included in the attribute list, the attribute is changed locally at the client, and the attribute and data different from the other client are not notified and synchronized with the server and the other client. Keep state. Therefore, in the shared data system, a part of the content data constituting the data such as document data in a certain client is dynamically or temporarily unshared from other clients during the system operation. Or shared with other clients.
[0014]
A computer-readable recording medium according to the third aspect of the present invention is provided.
On the computer,
Using a client-server configuration in which a plurality of clients are coupled to a common server, at least a part of the processing data is shared from the plurality of clients under the management of the server, and the shared data is shared with each client. Shared data system functions used by users
In each client, when adding content constituting the shared data, if it is desired to control the sharing of the content, a hierarchical context is created in the shared data, content information indicating the corresponding content, and An attribute control setting function for registering an attribute list indicating an attribute to be controlled in the content in the context;
In each of the clients, when the content constituting the shared data is operated, if the context corresponding to the content is not included, and if the context corresponding to the content is included, the attribute that changes depending on the operation is If it is not included in the attribute list of the corresponding context and the context above it, exclusive control is performed so that the status cannot be changed for other clients by the access control list indicating the operation authority of the content. A data synchronization processing function for locally changing the attribute at the client, notifying the server and other clients of the change in the attribute, synchronizing the data state, and sharing the data; and
In each of the clients, when the content constituting the shared data is operated, a context corresponding to the content is included, and the attribute that is changed by the operation is any of the attribute of the corresponding context and its upper context. If it is included in the list, the attribute is changed locally at the client, and the server and other clients are not notified and synchronized with the change in the attribute. Attribute change processing function to be retained,
The program for realizing is recorded.
[0015]
In the computer-readable recording medium according to the third aspect of the present invention, when it is desired that each client first control the sharing of the content when the content constituting the shared data is added, the shared data A hierarchical context is created, content information indicating the corresponding content, and an attribute list indicating an attribute to be controlled of the content are registered in the context, and the content is configured when the content constituting the shared data is operated. Does not include the corresponding context, and the context corresponding to the content is included, but the attribute that is changed by the operation is included in the attribute list of the corresponding context and the upper context. If not, manipulate that content By using an access control list indicating the limit, exclusive control is performed so that other clients cannot change the state, the attribute is locally changed by the client, and the change of the attribute is notified to the server and other clients. The data state is synchronized to share the data. On the other hand, when the content constituting the shared data is operated, the context corresponding to the content is included, and the attribute that is changed by the operation includes the corresponding context and the context. If it is included in the attribute list of any of the higher-level contexts, the attribute is locally changed by the client, and the change of the attribute is not notified to and synchronized with the server and other clients. Records a program to maintain different attributes and data states from the client There. Therefore, by executing this program, in the shared data system, a part of the content data constituting the data such as document data in a certain client is dynamically or temporarily transferred from another client during system operation. It can be unshared or shared with other clients.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
An embodiment of a shared data system according to the present invention will be described with reference to FIGS. FIG. 1 shows a functional configuration of a client that constructs a shared data system according to an embodiment of the present invention. FIG. 2 shows the configuration of a client / server system to which the shared data system according to the embodiment of the present invention is applied.
[0018]
The client 1 shown in FIG. 1 includes a shared data holding unit 2, a data synchronization processing unit 3, and a context holding unit 4. The shared data holding unit 2 holds one or more contents 21 and an access control list 22 corresponding to each content 21. The context holding unit 4 holds the context composed of the content information 41 and the attribute list 42 corresponding to the content information 41 in correspondence with the content 21.
[0019]
In the client / server system shown in FIG. 2, the clients 1, 100, 200, 300 and the server 400 are connected to a common network.
[0020]
The shared data system realized by the client-server configuration of the client-server system shown in FIG. 2 manages data such as documents on the server 400, and the users of a plurality of clients 1 and 100 to 300 always share and edit the same data. can do. In such a shared data system, a part of content data that constitutes data such as a document by one user is dynamically temporarily or permanently unshared from another user during system operation, or Implement a mechanism for sharing.
[0021]
In the system having this configuration, the data operations and states of the clients 1 and 100 to 300 are all shared by other clients. For example, if a word processor (word processor) part is pasted on a document that is data to be shared, every time a character is entered or every time a display area is scrolled and changed, another text is entered. Information is updated to the client, and unnecessary information is shared in the joint and co-authoring work of the document, so that the operability is poor.
[0022]
On the other hand, in this embodiment, partial changes in data due to user operations on the client are locally controlled, data update timing is changed, and information unnecessary for collaborative work is not shared. And be able to. That is, by providing local attribute information to the content constituting the shared data, it is possible to update the state for each content and control the shared state. Further, by providing the content with an access control list, the content of other clients can be locked, and the local editing operation of the client can be exclusively controlled.
[0023]
Content 21 constituting a document to be shared data held in shared data holding unit 2 of client 1 includes software parts having advanced functions such as a word processor component and a web browser component as shown in FIG. In addition, it includes text and optionally buttons as shown, selection buttons and free curves. Such a document is managed as a data structure in which contents are structured as shown in FIG. The shared data can have a hierarchical context, and the context can be associated with content 21 constituting the data. In the context, content information 41 indicating each content is held in association with an attribute list 42 including attributes of the content 21 and specific states of the attributes, as shown in FIG. Correspondingly, the content 21 holds an access control list 22 for controlling access rights such as a read right, a write right, and a delete right to the content 21 as shown in FIG.
[0024]
That is, the context is held in the context holding unit 4 and manages the content information 41 and the attribute list 42 in the shared data holding unit 2. This context is used when controlling the attributes of the content 21. Hierarchical contexts can be created for shared data. This context can be defined individually for each client (see FIG. 10). The attribute list 42 is stored in the context holding unit 4 together with the content information 41 and manages the attributes and attribute values of the content 21 as shown in FIG. The access control list 22 manages the operation authority of the content 21.
[0025]
Next, the operation of the shared data system according to this embodiment will be described in detail. First, for example, an attribute control setting operation in the client 1 will be described with reference to a flowchart shown in FIG.
[0026]
First, in the client, content is added to document data that is shared data (step A1). In a certain client, it is determined whether or not sharing of attribute values included in this content is to be controlled (step A2), and when it is desired to control sharing of attribute values included in this content, the shared data structure, that is, the document structure is set. A context is created (step A3). Then, the content to be controlled is registered in the context (step A4). An attribute list as shown in FIG. 6 is acquired from this content (step A5), an attribute to be controlled is selected from the attribute list, and an attribute list as shown in FIG. 4 is created to manage the state of the attribute (step A5). A6). Such content information 41 and attribute list 42 are registered in the context (step A7), and the process is terminated. If the content attribute is not controlled, the process is terminated as soon as it is determined in step A2.
[0027]
Next, as shown in FIG. 1, when operating the content 21 constituting the shared data held in the shared data holding unit 2 in the client 1, the data synchronization processing unit 3 sends the content 21 to the context holding unit 4. The shared data is locally controlled by the access control list 22 held in the shared data holding unit 2 together with the context and content 21 held corresponding to the content.
[0028]
The attribute changing process by the operation of the shared data content will be described with reference to the flowchart shown in FIG. First, when the content is manipulated to change the attribute (step B1), the data synchronization processing unit 3 checks the context to which the content information 41 of the content belongs (step B2). If there is a corresponding context, it is checked whether or not the changed attribute is registered in the attribute list 42 (step B3). If there is no item that matches the attribute list of the context (step B4), the attribute list of the higher context where the content is registered is further searched (step B6).
[0029]
If none of the contexts matches the attribute list, the content access control list 22 locks the attribute change from the other client to the other clients, and performs exclusive control so that the state cannot be changed (step B7). ). After such exclusive control, the update of the attribute value is confirmed (step B8). This change in attribute value is transmitted to the server and other clients, data sharing is performed so that the data is the same (step B9), and the process is terminated.
[0030]
In step B2, if there is no context to belong to, the process proceeds to step B7 to share data with other clients. If there is a match with the attribute list of the context in step B4, the client does not share the data by transmitting the attribute value change, and the client has an attribute that is locally different from other clients. And the data state is held (step B5). In addition, when it is desired to cancel the control of such attribute values, the context may be deleted. Note that both the attribute control setting and attribute changing processes described above are performed by the data synchronization processing unit 3 of the client.
[0031]
For example, as shown in FIG. 10, the document in the client 1 has a context 1, the content A is associated with the context 1, and the context 2 is subordinate. Content B and content C are associated with context 2. On the other hand, the document in the client 100 has the content 3 and the context 3. Content B and content C are associated with the context 3. In such a situation, as shown in FIG. 11, if the operation of the content B is permitted by the corresponding access control list on the client 1, this can be operated. However, on the client 100, if the operation of the content B is prohibited by the corresponding access control list, it cannot be operated.
[0032]
As described above, when a plurality of users share data and operate jointly, a sharing method for a part of the data can be dynamically controlled and set for each client, and the operability of each client is improved. . In addition, since a control method can be set for each content constituting data, the degree of freedom in content operation is high. Further, not all elements constituting the data are shared by the same means, and the amount of communication for data sharing can be reduced.
[0033]
Next, another example of operation in the above-described embodiment of the present invention will be described in detail with reference to FIG.
[0034]
(1) Share a document as shared data among multiple users.
(2) The word processor part C is pasted on the document having the contents A and B as the contents (step C1).
[0035]
(3) If a user wants to change the sharing method for the text of the attribute of word processor part C so that the data sharing is performed not for each character input but for each line feed code input, a new context is created in the document, The word processor part C is registered in the created context (step C2).
[0036]
(4) Obtain a list of attributes from the word processor part C, select the text that is the attribute to be controlled from the list of attributes, and register it with the attribute value (characters other than line feed code) in the context attribute list (step C3).
[0037]
(5) With this client, text is input to the word processor part C (step C4).
(6) The context attribute list is searched (step C5).
[0038]
(7) When text input is continued, the attribute list is adapted until the line breaks, so the text attribute is changed locally by text input, and the document status is different from the server and other clients. The attribute change is not notified to the client (step C6). By doing in this way, this client can hold data different from other clients, and this client can locally review sentences until a line break occurs.
[0039]
(8) On the other hand, when the text is input to the word processor part C in another client and the text attribute is changed, the context attribute list is similarly searched. At this time, if an upper context exists, the upper context is sequentially searched (step C51).
(9) In this case, since there is no attribute value that matches the attribute list, every time a character is entered, the change of the attribute value is reflected to other clients. When reflecting the data, in order to prohibit the data change of other clients, the status change of the contents of other clients is prohibited by the access control list (step C52).
[0040]
(10) Determine the attribute value of the client and synchronize to share the data of the server and other clients (step C61).
[0041]
In the above-described shared data system, when it is desired to control the sharing of content at each client when the content constituting the shared data is added, a hierarchical context is added to the shared data by the attribute control setting unit. Is created, and content information indicating the corresponding content and an attribute list indicating the attribute to be controlled are registered in the context. In each of the clients, the attribute change processing means controls the contents constituting the shared data.
[0042]
That is, the attribute change processing means includes the context corresponding to the content and the context corresponding to the content, but the attribute changed by the operation is the corresponding context and its higher order. If it is not included in the attribute list of the context, the exclusive control is performed so that the state cannot be changed with respect to another client by the access control list indicating the operation authority of the content, and the client locally The attribute is changed, the change of the attribute is notified to the server and other clients, and the data state is synchronized to share the data.
[0043]
At the same time, when an operation is performed on the content that constitutes the shared data, the attribute corresponding to the content is included, and the attribute that is changed by the operation is the attribute list of either the corresponding context or an upper context. In the client, the attribute is locally changed by the client, and the attribute change and data state are kept different from those of the other client without notifying and synchronizing the change of the attribute to the server and the other client. Let
[0044]
Therefore, according to such a shared data system, a part of content data constituting data such as document data in a certain client is dynamically temporarily or permanently transferred from another client during system operation. It can be unshared or shared with other clients.
[0045]
The shared data system of the present invention can be realized by using a normal computer system without configuring as a dedicated system. For example, a shared data system for executing the above-described processing can be constructed by installing the program from a medium (floppy disk, CD-ROM, etc.) storing a program for executing the above-described operation in a computer system. it can. By the installation, the program is stored in a medium such as a hard disk in the computer system, configures a shared data system, and is used for execution.
[0046]
Alternatively, the program may be registered in an FTP (File Transfer Protocol) server provided on a communication network such as the Internet, and distributed to FTP clients via the network. An electronic bulletin board (BBS: Bulletin Board System) of the communication network may be used. It is also possible to register the program in a network and distribute it via a network. The above-described processing can be achieved by starting this program and executing it under the control of an OS (Operating System). Furthermore, the above-described processing can also be achieved by starting and executing a program while transferring it via a communication network.
[0047]
【The invention's effect】
As described above, according to the present invention, in a shared data system, a part of content data constituting data such as document data in a certain client is dynamically temporarily or permanently during system operation. A shared data system that can be unshared from other clients or shared with other clients, a data local operation method in the shared data system, and a computer-readable recording medium can be provided.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a client used in a data sharing system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a client / server system that constructs a data sharing system using the client of FIG. 1;
FIG. 3 is a diagram schematically illustrating document data, which is an example of shared data, for explaining the data sharing system of FIGS. 1 and 2;
FIG. 4 is a diagram schematically illustrating a data structure of document data, which is an example of shared data, for explaining the data sharing system of FIGS. 1 and 2;
FIG. 5 is a diagram schematically illustrating an example of an attribute list constituting a context for explaining the data sharing system of FIGS. 1 and 2;
FIG. 6 is a diagram schematically illustrating an example of an access control list corresponding to content in order to explain the data sharing system of FIGS. 1 and 2;
FIG. 7 is a diagram schematically illustrating an example of an attribute list for creating an attribute list in order to explain the data sharing system of FIGS. 1 and 2;
FIG. 8 is a flowchart showing attribute control setting processing in the client for explaining the operation of the data sharing system of FIGS. 1 and 2;
FIG. 9 is a flowchart showing attribute change processing in the client for explaining the operation of the data sharing system of FIGS. 1 and 2;
FIG. 10 is a diagram schematically illustrating an example of a context in a client in order to explain the operation of the data sharing system in FIGS. 1 and 2;
11 is a diagram schematically showing exclusive control taking the context in the client of FIG. 10 as an example in order to explain the operation of the data sharing system of FIG. 1 and FIG. 2;
FIG. 12 is a diagram schematically showing another example of content operation in the client in order to explain the operation of the data sharing system of FIGS. 1 and 2;
[Explanation of symbols]
1,100,200,300 clients
2 Shared data holding unit
3 Data synchronization processor
4 Context holding unit
21 content
22 Access control list
41 Content information
42 Attribute list
400 servers

Claims (4)

Using a client-server configuration in which a plurality of clients are coupled to a common server, at least a part of the processing data is shared from the plurality of clients under the management of the server, and the shared data is shared with each client. In the shared data system used by users of
In each client, when adding content constituting the shared data, if it is desired to control the sharing of the content, a hierarchical context is created in the shared data, content information indicating the corresponding content, and Attribute control setting means for registering an attribute list indicating an attribute to be controlled in the content in the context;
In each of the clients, when the content constituting the shared data is not operated, the context corresponding to the content is not included, and the context corresponding to the content is included. If it is not included in the attribute list of the corresponding context and the context above it, exclusive control is performed so that the status cannot be changed for other clients by the access control list indicating the operation authority of the content. Then, the attribute is locally changed by the client, the change of the attribute is notified to the server and other clients, the data state is synchronized, the data is shared, and the content constituting the shared data is operated. , The context corresponding to that content If an attribute that is included and is changed by an operation is included in the attribute list of either the corresponding context or its upper context, the attribute is locally changed by the client, and the attribute is changed. Attribute change processing means for notifying and synchronizing the change to the server and other clients, and maintaining different attributes and data states from other clients;
A shared data system comprising: Each client is
A shared data holding unit for holding the shared data including the content and the access control list corresponding to the content;
A context holding unit for holding a context including the content information and the attribute list corresponding to each content of the shared data;
A data synchronization processing unit substantially including the attribute control setting unit and the attribute change processing unit;
The shared data system of claim 1, comprising: Using a client-server configuration in which a plurality of clients are coupled to a common server, at least a part of the processing data is shared from the plurality of clients under the management of the server, and the shared data is shared with each client. A data local operation method in a shared data system used by users of
In each client, when adding content constituting the shared data, if it is desired to control the sharing of the content, a hierarchical context is created in the shared data, content information indicating the corresponding content, and An attribute control setting step of registering in the context an attribute list indicating an attribute to be controlled of content;
In each of the clients, when the content constituting the shared data is operated, if the context corresponding to the content is not included, and if the context corresponding to the content is included, the attribute that changes depending on the operation is If it is not included in the attribute list of the corresponding context and the context above it, exclusive control is performed so that the status cannot be changed for other clients by the access control list indicating the operation authority of the content. A data synchronization processing step for locally changing the attribute at the client, notifying the server and other clients of the change in the attribute, synchronizing the data state, and sharing the data;
Each client includes a context corresponding to the content when the content constituting the shared data is operated, and the attribute that is changed by the operation is the attribute of the corresponding context or a context above it. If it is included in the list, the attribute is changed locally at the client, and the server and other clients are not notified and synchronized with the change in the attribute. Attribute change processing step to be retained;
A local data manipulation method in a shared data system, comprising: On the computer,
Using a client-server configuration in which a plurality of clients are coupled to a common server, at least a part of the processing data is shared from the plurality of clients under the management of the server, and the shared data is shared with each client. Shared data system functions used by users
In each client, when adding content constituting the shared data, if it is desired to control the sharing of the content, a hierarchical context is created in the shared data, content information indicating the corresponding content, and An attribute control setting function for registering an attribute list indicating an attribute to be controlled in the content in the context;
In each of the clients, when the content constituting the shared data is not operated, the context corresponding to the content is not included, and the context corresponding to the content is included. If it is not included in the attribute list of the corresponding context and the context above it, exclusive control is performed so that the status cannot be changed for other clients by the access control list indicating the operation authority of the content. In each client, the data synchronization processing function that changes the attribute locally at the client, notifies the server and other clients of the change in the attribute, and synchronizes the data state to share the data. Manipulating content that makes up shared data Sometimes, if the context corresponding to the content is included, and the attribute that is changed by the operation is included in the attribute list of either the corresponding context or its upper context, the local An attribute change processing function that automatically changes an attribute and does not notify and synchronize the change of the attribute to the server and the other client, and maintains a different attribute and data state from the other client,
The computer-readable recording medium which recorded the program for implement | achieving.

Images