org.sourceforge.jemm.database.components
Class DefaultDBRootHandler

java.lang.Object
  org.sourceforge.jemm.database.components.DefaultDBRootHandler

All Implemented Interfaces:

DBRootHandler

public class DefaultDBRootHandler
extends java.lang.Object
implements DBRootHandler

Author:

Rory Graves

Constructor Summary

DefaultDBRootHandler(StorageEngine storageEngine)

Method Summary

ID	getRoot(java.lang.String rootName) Return the current value of the root.
void	setObjectStatusListener(ObjectStatusListener objectStatusListener)
void	setRoot(java.lang.String rootName, ID newValue)
ID	setRootIfNull(java.lang.String rootName, ID newValue) Set the given root, if the current value of the root is null.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultDBRootHandler

public DefaultDBRootHandler(StorageEngine storageEngine)

Method Detail

setObjectStatusListener

public void setObjectStatusListener(ObjectStatusListener objectStatusListener)

Specified by:

setObjectStatusListener in interface DBRootHandler

setRoot

public void setRoot(java.lang.String rootName,
                    ID newValue)

Specified by:

setRoot in interface DBRootHandler

Parameters:

rootName -

newValue -

setRootIfNull

public ID setRootIfNull(java.lang.String rootName,
                        ID newValue)

Set the given root, if the current value of the root is null.

Specified by:

setRootIfNull in interface DBRootHandler

Parameters:

rootName - The name of the root.

newValue - The new value to set

Returns:

The old value of the root, (i.e. the current value if the set fails, or null if it does)

getRoot

public ID getRoot(java.lang.String rootName)

Return the current value of the root.

Specified by:

getRoot in interface DBRootHandler

Parameters:

rootName - The name of the root.

Returns:

The current value of the root reference 'rootName'