1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 package com.symbian.smt.gui;

    17 

    18 import org.eclipse.core.runtime.preferences.IEclipsePreferences;

    19 import org.osgi.service.prefs.BackingStoreException;

    20 

    21 public class PersistentDataStore extends AbstractPersistentDataStore {

    22 

    23 	private IEclipsePreferences node;

    24 	private IEclipsePreferences defaultNode;

    25 

    26 	public PersistentDataStore(IEclipsePreferences instanceNode) {

    27 		this.node = instanceNode;

    28 		this.defaultNode = null;

    29 	}

    30 

    31 	/**

    32 	 * Creates the PersistentDataStore object, which is used for reading and

    33 	 * writing to a IEclipsePreferences node

    34 	 * 

    35 	 * @param IEclipsePreferences

    36 	 *            A node

    37 	 */

    38 	public PersistentDataStore(IEclipsePreferences instanceNode,

    39 			IEclipsePreferences defaultNode) {

    40 		this.node = instanceNode;

    41 		this.defaultNode = defaultNode;

    42 	}

    43 

    44 	public String read(PersistentSettingsEnums key) {

    45 		String result = node.get(key.toString(), null);

    46 

    47 		if (result == null && defaultNode != null) {

    48 			result = defaultNode.get(key.toString(), null);

    49 		}

    50 

    51 		return result;

    52 	}

    53 

    54 	public void write(PersistentSettingsEnums key, String value) {

    55 		node.put(key.toString(), value);

    56 		try {

    57 			node.flush();

    58 		} catch (BackingStoreException e) {

    59 			Logger.log(e.getMessage(), e);

    60 		}

    61 	}

    62 }