com.fuse.storage.sql
Class SQLDatabaseImpl

java.lang.Object
  java.rmi.server.RemoteObject
      java.rmi.server.RemoteServer
          java.rmi.server.UnicastRemoteObject
              com.fuse.storage.sql.SQLDatabaseImpl

All Implemented Interfaces:

FUSEDatabase, java.io.Serializable, java.rmi.Remote

public class SQLDatabaseImpl
extends java.rmi.server.UnicastRemoteObject
implements FUSEDatabase

SQLDatabase implements a simple database which stores data into SQL database thru JDBC.

See Also:

FUSEDataObject, Serialized Form

Field Summary

protected java.util.Hashtable	classCache
protected DatabaseConnectionManager	connMgr
protected static SQLDatabaseImpl	localInstance
protected java.util.Vector	objectPackages
protected java.util.Properties	properties

Fields inherited from class java.rmi.server.RemoteObject

ref

Constructor Summary

SQLDatabaseImpl(java.lang.String propFile)

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
static SQLDatabaseImpl	getLocalInstance()
FUSEDataObject	insert(FUSEDataObject dbObject) Stores an object
static void	main(java.lang.String[] args) Starts up the SQLDatabaseImpl Usage: java .com.fuse.storage.SQL.SQLDatabaseImpl [rmiUrl]
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

Methods inherited from class java.rmi.server.UnicastRemoteObject

clone, exportObject, exportObject, exportObject, unexportObject

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

connMgr

protected DatabaseConnectionManager connMgr

classCache

protected java.util.Hashtable classCache

objectPackages

protected java.util.Vector objectPackages

properties

protected java.util.Properties properties

localInstance

protected static SQLDatabaseImpl localInstance

Constructor Detail

SQLDatabaseImpl

public SQLDatabaseImpl(java.lang.String propFile)
                throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

main

public static void main(java.lang.String[] args)

Starts up the SQLDatabaseImpl Usage: java .com.fuse.storage.SQL.SQLDatabaseImpl [rmiUrl]

getLocalInstance

public static SQLDatabaseImpl getLocalInstance()

createNew

public 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

Specified by:

createNew in interface FUSEDatabase

Parameters:

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

Throws:

java.lang.ClassNotFoundException - if object not found

java.rmi.RemoteException

insert

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

Stores an object

Specified by:

insert in interface FUSEDatabase

Parameters:

dbObject - the object to store

Throws:

DatabaseException - if insertion failed

java.rmi.RemoteException

delete

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

Deletes an object from the database

Specified by:

delete in interface FUSEDatabase

Parameters:

dbObject - the data object to delete

Throws:

DatabaseException - if deleting failed

java.rmi.RemoteException

update

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

Updates an object in the database

Specified by:

update in interface FUSEDatabase

Parameters:

dbObject - the data object to update

Throws:

DatabaseException

java.rmi.RemoteException

query

public 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

Specified by:

query in interface FUSEDatabase

Parameters:

bean - the objectQueryBean which implements the query

Throws:

DatabaseException

java.rmi.RemoteException

querySummary

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

Makes a query which returns some numeric information.

Specified by:

querySummary in interface FUSEDatabase

Parameters:

bean - the bean which implements the query

Throws:

DatabaseException

java.rmi.RemoteException