Package mops.businesslogic.file

Interface FileInfoService

All Known Implementing Classes:

FileInfoServiceImpl

@Service
public interface FileInfoService

Handles meta data for files.

Method Summary

Modifier and Type	Method	Description
void	deleteFileInfo(long fileId)	Delete file from database by id.
java.util.Set<java.lang.Long>	fetchAllFileInfoIds()	Fetches all available FileInfo ids.
java.util.List<FileInfo>	fetchAllFilesInDirectory(long dirId)	Lists all files in a specific directory.
java.util.Set<java.lang.Long>	fetchAllOrphanedFileInfos()	Fetches all FileInfos which are in non existing directories.
FileInfo	fetchFileInfo(long fileId)	Get a file by id.
long	getFileCountInGroup(long groupId)	Get the total number of files in a group.
long	getStorageUsageInGroup(long groupId)	Get the total number of bytes used by that group.
long	getTotalFileCount()	Get the total number of files in all groups.
long	getTotalStorageUsage()	Get the total number of bytes used by all groups.
FileInfo	saveFileInfo(FileInfo fileInfo)	Save file to database.

Method Detail

fetchAllFilesInDirectory

java.util.List<FileInfo> fetchAllFilesInDirectory(long dirId)
                                           throws MopsException

Lists all files in a specific directory.

Parameters:

dirId - directory id

Returns:

a list of files in that directory

Throws:

MopsException

fetchFileInfo

FileInfo fetchFileInfo(long fileId)
                throws MopsException

Get a file by id.

Parameters:

fileId - file id

Returns:

a FileInfo object

Throws:

MopsException

saveFileInfo

FileInfo saveFileInfo(FileInfo fileInfo)
               throws MopsException

Save file to database.

Parameters:

fileInfo - Metadata of a file

Returns:

the freshly saved FileInfo

Throws:

MopsException

deleteFileInfo

void deleteFileInfo(long fileId)
             throws MopsException

Delete file from database by id.

Parameters:

fileId - file id

Throws:

MopsException

fetchAllFileInfoIds

java.util.Set<java.lang.Long> fetchAllFileInfoIds()
                                           throws MopsException

Fetches all available FileInfo ids.

Returns:

all ids

Throws:

MopsException - on error

fetchAllOrphanedFileInfos

java.util.Set<java.lang.Long> fetchAllOrphanedFileInfos()
                                                 throws MopsException

Fetches all FileInfos which are in non existing directories.

Returns:

all ids

Throws:

MopsException - on error

getStorageUsageInGroup

long getStorageUsageInGroup(long groupId)
                     throws MopsException

Get the total number of bytes used by that group.

Parameters:

groupId - group

Returns:

bytes used

Throws:

MopsException

getTotalStorageUsage

long getTotalStorageUsage()
                   throws MopsException

Get the total number of bytes used by all groups.

Returns:

bytes used

Throws:

MopsException

getFileCountInGroup

long getFileCountInGroup(long groupId)
                  throws MopsException

Get the total number of files in a group.

Parameters:

groupId - group

Returns:

file count

Throws:

MopsException

getTotalFileCount

long getTotalFileCount()
                throws MopsException

Get the total number of files in all groups.

Returns:

file count

Throws:

MopsException