/*
* Copyright (C) 2012, Katy Hilgenberg.
* Special acknowledgments to: Knowledge & Data Engineering Group, University of Kassel (http://www.kde.cs.uni-kassel.de).
* Contact: sdcf@cs.uni-kassel.de
*
* This file is part of the SDCFramework (Sensor Data Collection Framework) project.
*
* The SDCFramework is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The SDCFramework is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the SDCFramework. If not, see <http://www.gnu.org/licenses/>.
*/
package de.unikassel.android.sdcframework.preferences;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import de.unikassel.android.sdcframework.devices.facade.SensorDeviceIdentifier;
import de.unikassel.android.sdcframework.preferences.facade.DevicePreferencesCollection;
import de.unikassel.android.sdcframework.preferences.facade.SensorDevicePreferences;
/**
* Implementation of a collection of device preferences.
*
* @author Katy Hilgenberg
*
*/
public final class DevicePreferencesCollectionImpl implements
DevicePreferencesCollection
{
/**
* the contained sub devices of the sensor composition
*/
private Map< SensorDeviceIdentifier, SensorDevicePreferences > mapPreferences;
/**
* Constructor
*/
public DevicePreferencesCollectionImpl()
{
super();
}
/*
* (non-Javadoc)
*
* @see de.unikassel.android.sdcframework.preferences.facade.
* DevicePreferencesCollection# addPreferences
* (de.unikassel.android.sdcframework
* .preferences.facade.SingleDevicePreferences )
*/
@Override
public final boolean addPreferences( SensorDevicePreferences preferences )
{
if ( preferences != null )
{
getPreferencesMap().put( preferences.getDeviceIdentifier(), preferences );
return true;
}
return false;
}
/*
* (non-Javadoc)
*
* @see de.unikassel.android.sdcframework.preferences.facade.
* DevicePreferencesCollection# getPreferences()
*/
@Override
public Collection< SensorDevicePreferences > getPreferences()
{
return Collections.unmodifiableCollection( getPreferencesMap().values() );
}
/**
* Setter for the preferences map
*
* @param mapPreferences
* the preferences map to set
*/
private final void setPreferencesMap(
Map< SensorDeviceIdentifier, SensorDevicePreferences > mapPreferences )
{
this.mapPreferences = mapPreferences;
}
/**
* Getter for the the preferences map
*
* @return the the preferences map
*/
private final Map< SensorDeviceIdentifier, SensorDevicePreferences >
getPreferencesMap()
{
if ( mapPreferences == null )
{
setPreferencesMap( new HashMap< SensorDeviceIdentifier, SensorDevicePreferences >() );
}
return mapPreferences;
}
/*
* (non-Javadoc)
*
* @see de.unikassel.android.sdcframework.preferences.facade.
* DevicePreferencesCollection# getPreferencesForDevice(java.lang.String)
*/
@Override
public final SensorDevicePreferences getPreferencesForDevice(
SensorDeviceIdentifier deviceIdentifier )
{
return getPreferencesMap().get( deviceIdentifier );
}
/*
* (non-Javadoc)
*
* @see de.unikassel.android.sdcframework.preferences.facade.
* DevicePreferencesCollection#removeAll()
*/
@Override
public final void removeAll()
{
getPreferencesMap().clear();
}
}