com.fuse.storage
Interface FUSEDatabase

All Superinterfaces:

java.rmi.Remote

All Known Implementing Classes:

SQLDatabaseImpl

public interface FUSEDatabase
extends java.rmi.Remote

FUSEDatabase is an highlevel remote interface to a database which can store FUSEDataObjects.

See Also:

FUSEDataObject

Method Summary

FUSEDataObject	createNew(java.lang.String type) Constructs a FUSEDataObject of given type, which is compatible with the database implementation.
void	delete(FUSEDataObject dbObject) Deletes an object from the database
FUSEDataObject	insert(FUSEDataObject dbObject) Stores an object
java.util.Vector	query(ObjectQueryBean bean) Makes a query of data object from the database.
java.lang.Object	querySummary(SummaryQueryBean bean) Makes a query which returns some numeric information.
FUSEDataObject	update(FUSEDataObject dbObject) Updates an object in the database

Method Detail

createNew

FUSEDataObject createNew(java.lang.String type)
                         throws java.lang.ClassNotFoundException,
                                java.rmi.RemoteException

Constructs a FUSEDataObject of given type, which is compatible with the database implementation. The loaded object is typically named .: for example, if type is "FUSEUser" and we are using SQL implementation, the class is com.fuse.storage.sql.FUSEUserSQL

Parameters:

type - object type, such as "FUSEUser" or "logentry"

Throws:

java.lang.ClassNotFoundException - if object not found

java.rmi.RemoteException

insert

FUSEDataObject insert(FUSEDataObject dbObject)
                      throws DatabaseException,
                             java.rmi.RemoteException

Stores an object

Parameters:

dbObject - the object to store

Throws:

DatabaseException - if insertion failed

java.rmi.RemoteException

delete

void delete(FUSEDataObject dbObject)
            throws DatabaseException,
                   java.rmi.RemoteException

Deletes an object from the database

Parameters:

dbObject - the data object to delete

Throws:

DatabaseException - if deleting failed

java.rmi.RemoteException

update

FUSEDataObject update(FUSEDataObject dbObject)
                      throws DatabaseException,
                             java.rmi.RemoteException

Updates an object in the database

Parameters:

dbObject - the data object to update

Throws:

DatabaseException

java.rmi.RemoteException

query

java.util.Vector query(ObjectQueryBean bean)
                       throws DatabaseException,
                              java.rmi.RemoteException

Makes a query of data object from the database. The actual query is done by the ObjectQueryBean

Parameters:

bean - the objectQueryBean which implements the query

Throws:

DatabaseException

java.rmi.RemoteException

querySummary

java.lang.Object querySummary(SummaryQueryBean bean)
                              throws DatabaseException,
                                     java.rmi.RemoteException

Makes a query which returns some numeric information.

Parameters:

bean - the bean which implements the query

Throws:

DatabaseException

java.rmi.RemoteException