JP2007293619A5

JP2007293619A5 -

Info

Publication number: JP2007293619A5
Application number: JP2006121078A
Authority: JP
Filing date: 2006-04-25
Publication date: 2009-06-18
Anticipated expiration: 2026-04-25

Claims

In a server device that can communicate with a client device,
Storage means a file identifier to be transmitted by specifying the storage location from said client device is added you memorize in the storage location,
When the first file is transmitted from the client device, it is determined from the identifier added to each file whether the same second file as the first file is already stored in the storage means Means of judging,
When the first determination unit determines that the same second file as the first file already exists in the storage unit, the storage location of the second file that already exists is specified by the client device A second determination means for determining whether the storage location is different;
When the second determination unit determines that the storage location of the second file is different from the storage location specified by the client device, the storage location of the first file specified by the client device is indicated. File position specifying function data creating means for creating file position specifying function data and replacing the second file ;
The server apparatus characterized by having.

In the file storage location of the storage means, it is possible to set a disclosure range indicating a range of users that can be referred to,
The file location specifying function data can set a disclosure range indicating a user range that can be referred to a file storage location,
When the first file is moved to a storage location of a file having a disclosure range different from the disclosure range set in the storage location of the first file, the file position specifying function data creating means Creates a file location specification function data indicating the storage location of the first file at the file storage location, and sets the disclosure range of the created file location specification function data as the storage location of the destination file the server apparatus according to claim 1, characterized in that set on the basis of the disclosures being.

In the file storage location of the storage means, it is possible to set a disclosure range indicating a range of users that can be referred to,
The file location specifying function data can set a disclosure range indicating a user range that can be referred to a file storage location,
When moving the first file to a storage location of a file having a disclosure range different from the disclosure range set as the storage location of the first file, the file location specifying function data creating means moves the first file The disclosure range of the previous storage location is compared with the disclosure range of the destination storage location, and if the disclosure range of the destination storage location is narrower, the creation of the file location specification function data is not performed. The server device according to claim 1 , characterized in that:

The server apparatus according to any one of claims 1 to 3, characterized in that it has a file attribute information adding means for adding information indicating the storage location of the file location specified function data as the attribute information of the file.

When the file stored in the storage means is moved, based on the attribute information added by the file attribute information adding means, the actual position of the file indicated by the file position specifying function data is changed to the destination of the file. The server apparatus according to claim 4 , further comprising a file position specifying function data changing unit for changing to

In the storage location of the file in the storage means, it is possible to set a disclosure range indicating a range of users that can be referred to,
The file location specifying function data changing means compares the disclosure range of the storage location of the moved file with the disclosure range of the storage location of the file location specification function data stored in the attribute information of the file, 6. The server apparatus according to claim 5 , wherein the file position designation function data is deleted when the disclosure range of the storage location of the movement destination is narrower.

Wherein the storage unit, the server device according to claim 5 or 6, characterized in that manages files on the basis of the identification information of the files included in the attribute information of the file.

When storing the file transmitted from the client device, if the file identification information does not include the file identification information, the file attribute information addition for adding the identification information to the file attribute information is performed. 8. The server device according to claim 7 , further comprising means.

The reference number recording means for adding the reference count of the referred file as attribute information of the file when the file stored in the storage means is referred to by the client device. The server device according to any one of 4 to 8 .

The storage means notifies the owner of the file stored in the attribute information of the file of the file whose reference count does not satisfy a predetermined standard, and the file is stored in accordance with an instruction from the owner. The server apparatus according to claim 9 , further comprising a deletion unit that deletes the storage unit.

In the information sharing system in which the client device and the server device are communicably connected,
The client device is
Input means for inputting information indicating the storage location of the file when updating the file;
And adding means for adding an identifier of the information and said file indicating a storage location that is input by the input means to the file,
Having transmission means for transmitting the file to the server device;
The server device
Memory means you memorize the file identifier is added is transmitted from the client device to the additional memory locations by said adding means,
When the first file is transmitted from the client device, it is determined from the identifier added to each file whether the same second file as the first file is already stored in the storage means Means of judging,
When the first determination unit determines that the same second file as the first file already exists in the storage unit, the storage location of the second file that already exists is specified by the client device A second determination means for determining whether the storage location is different;
When the second determination unit determines that the storage location of the second file is different from the storage location specified by the client device, the storage location of the first file specified by the client device is indicated. create a file position specifying function data, and a file location specified function data preparing means for replacing said second file,
An information sharing system characterized by this.

In an information sharing method in a server device capable of communicating with a client device,
Storage means, a storage step a file identifier to be transmitted by specifying the storage location from said client device is added you memorize in the storage location,
When the first file is transmitted from the client device , the first determination unit adds to each file whether the same second file as the first file is already stored in the storage unit. A first determination step for determining from the identified identifier;
If the second determining means determines that the same second file as the first file already exists in the storage means in the first determining step, the storage location of the second file that already exists is A second determination step of determining whether the storage location is different from that specified by the client device;
If the file location specifying function data creation means determines that the storage location of the second file is different from the storage location specified by the client device in the second determination step, the file location specification function data creation means is specified by the client device. Creating a file location specifying function data indicating the storage location of the first file, and replacing the second file with the file location specifying function data;
An information sharing method characterized by comprising:

Means of the server apparatus according to any one of claims 1 to 1 0, or programs for causing a computer to function as means for information sharing system according to claim 1 1.

A computer-readable recording medium on which the program according to claim 13 is recorded.