Package adams.gui.tools.wekainvestigator.data

Class DatabaseContainer

java.lang.Object

adams.core.logging.LoggingObject

adams.gui.tools.wekainvestigator.data.AbstractDataContainer

adams.gui.tools.wekainvestigator.data.DatabaseContainer

All Implemented Interfaces:

CleanUpHandler, LoggingSupporter, SizeOfHandler, UndoHandler, UndoHandlerWithQuickAccess, UndoListener, DataContainer, Serializable, Comparable<DataContainer>, EventListener

public class DatabaseContainer
extends AbstractDataContainer

Dataset loaded from database.

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	m_Password	the password.
protected String	m_Query	the query used to load the data.
protected String	m_URL	the database URL.
protected String	m_User	the user.

Fields inherited from class adams.gui.tools.wekainvestigator.data.AbstractDataContainer

m_Data, m_ID, m_IDCounter, m_LastUpdated, m_Modified, m_Undo

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Constructor Summary

Constructors

Constructor	Description
DatabaseContainer(String url, String user, String pw, String query)	Loads the data using the specified url/query.

Method Summary

Modifier and Type	Method	Description
protected void	applyUndoData(Serializable[] data)	Restores the data from the undo point.
boolean	canReload()	Whether it is possible to reload this item.
void	cleanUp()	Cleans up data structures, frees up memory.
protected String	doReload()	Reloads the data.
String	getSource()	Returns the source of the data item.
protected Serializable[]	getUndoData()	Returns the data to store in the undo.

Methods inherited from class adams.gui.tools.wekainvestigator.data.AbstractDataContainer

addUndoPoint, compareTo, equals, getData, getID, getUndo, handleException, isModified, isUndoSupported, lastUpdated, nextID, redo, reload, setData, setModified, setUndo, toString, undo, undoOccurred

Methods inherited from class adams.core.logging.LoggingObject

configureLogger, getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled, sizeOf

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m_URL

protected String m_URL

the database URL.

m_Query

protected String m_Query

the query used to load the data.

m_User

protected String m_User

the user.

m_Password

protected String m_Password

the password.

Constructor Detail

DatabaseContainer

public DatabaseContainer(String url,
                         String user,
                         String pw,
                         String query)

Loads the data using the specified url/query.

Parameters:

url - the JDBC URL

user - the database user

pw - the password

query - the query used

Method Detail

getSource

public String getSource()

Returns the source of the data item.

Returns:

the source

canReload

public boolean canReload()

Whether it is possible to reload this item.

Returns:

true if reloadable

doReload

protected String doReload()

Reloads the data.

Specified by:

doReload in class AbstractDataContainer

Returns:

null if successfully reloaded, otherwise error message

getUndoData

protected Serializable[] getUndoData()

Returns the data to store in the undo.

Overrides:

getUndoData in class AbstractDataContainer

Returns:

the undo point

applyUndoData

protected void applyUndoData(Serializable[] data)

Restores the data from the undo point.

Overrides:

applyUndoData in class AbstractDataContainer

Parameters:

data - the undo point

cleanUp

public void cleanUp()

Cleans up data structures, frees up memory.

Specified by:

cleanUp in interface CleanUpHandler

Overrides:

cleanUp in class AbstractDataContainer