author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 27 Apr 2010 16:30:29 +0300 | |
branch | RCL_3 |
changeset 19 | 04becd199f91 |
child 80 | d6dafc5d983f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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package com.ibm.oti.nokiaextcldc; |
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import java.util.Hashtable; |
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import com.ibm.oti.util.SystemPropertiesHook; |
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import com.ibm.oti.vm.VM; |
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import com.nokia.mj.impl.rt.SystemPropertyHashtable; |
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import com.nokia.mj.impl.rt.support.Finalizer; |
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import com.nokia.mj.impl.rt.JvmPort; |
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/** |
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* A class that implements a system property extension mechanism provided |
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* by J9 for CLDC. The idea is that the VM provides the original system |
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* properties in a Hashtable object as an argument in extendSystemProperties |
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* method. In the method a new Hashtable based instance of object is returned |
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* containing original properties. The object is from class that extendeds |
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* the Hashtable where the get() method is overwritten in order to handle |
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* dynamic properties. |
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* |
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* @author Nokia Corporation |
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* @version 1.0 |
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*/ |
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public class SystemPropertyExtension implements SystemPropertiesHook |
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{ |
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public Hashtable extendSystemProperties(Hashtable originalProperties) |
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{ |
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// Vital to make finalizer implementation reliable. If this is not done |
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// the first class registering for finalization never receves |
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// finalization serverces - i.e. none of the instances of that |
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// particular class will ever be finalized. |
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VM.enableFinalization(Finalizer.class); |
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// Create a new object extending java.util.Hashtable and fill with the |
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// original properties. |
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SystemPropertyHashtable newProperties = |
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new SystemPropertyHashtable(originalProperties); |
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// Store the hashtable to be able to add properties during runtime. |
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JvmPort.setPropertiesContainer(newProperties); |
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// Override existing line.separator |
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newProperties.put("line.separator", "\n"); |
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return newProperties; |
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} |
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} |