Package fr.dyade.aaa.util

Interface Repository

All Known Implementing Classes:

DBRepository, FileRepository

public interface Repository

This interface defines a repository for serializable objects and bytes array. Note: Be careful the constructor must be public to allow newInstance from another package.

See Also:

NTransaction

Method Summary

Modifier and Type	Method	Description
void	backup(BackupFile backup)	Backups the repository (may be unimplemented).
void	close()	Closes the repository.
void	commit()	Commits all changes to the repository.
void	delete(String dirName, String name)	Deletes the corresponding objects in repository.
int	getNbBadDeletedObjects()	Returns the number of useless delete operation on repository.
int	getNbDeletedObjects()	Returns the number of delete operation on repository.
int	getNbLoadedObjects()	Returns the number of load operation from repository.
int	getNbSavedObjects()	Returns the number of save operation to repository.
void	init(Transaction transaction, File dir)	Initializes the repository.
String[]	list(String prefix)	Gets a list of persistent objects that name corresponds to prefix.
byte[]	load(String dirName, String name)	Loads the byte array.
void	save(String dirName, String name, byte[] content)	Save the corresponding bytes array.

Method Detail

init

void init(Transaction transaction,
          File dir)
   throws IOException

Initializes the repository.

Parameters:

transaction - the transaction object.

dir - the directory.

Throws:

IOException - an error occurs.

list

String[] list(String prefix)
       throws IOException

Gets a list of persistent objects that name corresponds to prefix.

Parameters:

prefix - the prefix.

Returns:

The list of corresponding names.

Throws:

IOException - an error occurs.

save

void save(String dirName,
          String name,
          byte[] content)
   throws IOException

Save the corresponding bytes array.

Parameters:

dirName - the directory.

name - the object name.

content - the serialized object view.

Throws:

IOException - an error occurs.

load

byte[] load(String dirName,
            String name)
     throws IOException

Loads the byte array.

Parameters:

dirName - the directory.

name - the object name.

Returns:

the serialized object view.

Throws:

IOException - an error occurs.

delete

void delete(String dirName,
            String name)
     throws IOException

Deletes the corresponding objects in repository.

Parameters:

dirName - the directory.

name - the object name.

Throws:

IOException - an error occurs.

commit

void commit()
     throws IOException

Commits all changes to the repository.

Throws:

IOException - an error occurs.

backup

void backup(BackupFile backup)
     throws IOException

Backups the repository (may be unimplemented).

Parameters:

backup - The backup file.

Throws:

IOException

close

void close()
    throws IOException

Closes the repository.

Throws:

IOException - an error occurs.

getNbSavedObjects

int getNbSavedObjects()

Returns the number of save operation to repository.

Returns:

The number of save operation to repository.

getNbDeletedObjects

int getNbDeletedObjects()

Returns the number of delete operation on repository.

Returns:

The number of delete operation on repository.

getNbBadDeletedObjects

int getNbBadDeletedObjects()

Returns the number of useless delete operation on repository.

Returns:

The number of useless delete operation on repository.

getNbLoadedObjects

int getNbLoadedObjects()

Returns the number of load operation from repository.

Returns:

The number of load operation from repository.