/**
* Copyright (c) 2011, SOCIETIES Consortium (WATERFORD INSTITUTE OF TECHNOLOGY (TSSG), HERIOT-WATT UNIVERSITY (HWU), SOLUTA.NET
* (SN), GERMAN AEROSPACE CENTRE (Deutsches Zentrum fuer Luft- und Raumfahrt e.V.) (DLR), Zavod za varnostne tehnologije
* informacijske družbe in elektronsko poslovanje (SETCCE), INSTITUTE OF COMMUNICATION AND COMPUTER SYSTEMS (ICCS), LAKE
* COMMUNICATIONS (LAKE), INTEL PERFORMANCE LEARNING SOLUTIONS LTD (INTEL), PORTUGAL TELECOM INOVAÇÃO, SA (PTIN), IBM Corp.,
* INSTITUT TELECOM (ITSUD), AMITEC DIACHYTI EFYIA PLIROFORIKI KAI EPIKINONIES ETERIA PERIORISMENIS EFTHINIS (AMITEC), TELECOM
* ITALIA S.p.a.(TI), TRIALOG (TRIALOG), Stiftelsen SINTEF (SINTEF), NEC EUROPE LTD (NEC))
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.societies.personalisation.CommunityPreferenceManagement.impl.management;
import java.io.IOException;
import java.util.Hashtable;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.societies.api.cis.management.ICisManager;
import org.societies.api.cis.management.ICisOwned;
import org.societies.api.comm.xmpp.interfaces.ICommManager;
import org.societies.api.context.CtxException;
import org.societies.api.context.model.CtxAttribute;
import org.societies.api.context.model.CtxIdentifier;
import org.societies.api.context.model.CtxModelType;
import org.societies.api.context.model.util.SerialisationHelper;
import org.societies.api.identity.IIdentity;
import org.societies.api.identity.IIdentityManager;
import org.societies.api.identity.InvalidFormatException;
import org.societies.api.internal.context.broker.ICtxBroker;
import org.societies.personalisation.preference.api.model.IPreferenceTreeModel;
/**
* @author Elizabeth
*
*/
public class PreferenceRetriever {
private Logger logging = LoggerFactory.getLogger(this.getClass());
private ICtxBroker broker;
private ICisManager cisManager;
private final ICommManager commManager;
private IIdentityManager idMgr;
public PreferenceRetriever(ICtxBroker broker, ICisManager cisManager, ICommManager commManager){
this.broker = broker;
this.cisManager = cisManager;
this.commManager = commManager;
idMgr = this.commManager.getIdManager();
}
public Hashtable<IIdentity, Registry> retrieveRegistries(){
Hashtable<IIdentity, Registry> registries = new Hashtable<IIdentity, Registry>();
List<ICisOwned> listOfOwnedCis = cisManager.getListOfOwnedCis();
for (ICisOwned cisOwned : listOfOwnedCis){
try {
IIdentity cisIdentity = idMgr.fromJid(cisOwned.getCisId());
registries.put(cisIdentity, retrieveRegistry(cisIdentity));
} catch (InvalidFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return registries;
}
public Registry retrieveRegistry(IIdentity CISId){
try {
Future<List<CtxIdentifier>> futureAttrList = broker.lookup(CtxModelType.ATTRIBUTE, CtxModelTypes.PREFERENCE_REGISTRY);
if (futureAttrList==null){
return new Registry(CISId);
}
List<CtxIdentifier> attrList = futureAttrList.get();
if (null!=attrList){
if (attrList.size()>0){
CtxIdentifier identifier = attrList.get(0);
CtxAttribute attr = (CtxAttribute) broker.retrieve(identifier).get();
Registry registry = (Registry) SerialisationHelper.deserialise(attr.getBinaryValue(), this.getClass().getClassLoader());
if (null==registry){
this.logging.debug("Error retrieving binary value from attribute");
return new Registry(CISId);
}
return registry;
}
this.logging.debug("PreferenceRegistry not found in DB. Creating new registry");
return new Registry(CISId);
}
this.logging.debug("PreferenceRegistry not found in DB. Creating new registry");
return new Registry(CISId);
} catch (CtxException e) {
this.logging.debug("Exception while loading PreferenceRegistry from DB");
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return new Registry(CISId);
}
private Object convertToObject(byte[] byteArray){
try {
return SerialisationHelper.deserialise(byteArray, this.getClass().getClassLoader());
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (ClassNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
/*
try {
ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(byteArray));
Object obj = ois.readObject();
return obj;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
*/
return null;
}
/*
* retrieves a preference object using that preference object's context identifier to find it
* @param id
* @return
*/
public IPreferenceTreeModel retrievePreference(CtxIdentifier id){
try{
//retrieve directly the attribute in context that holds the preference as a blob value
CtxAttribute attrPref = (CtxAttribute) broker.retrieve(id).get();
IPreferenceTreeModel iptm = (IPreferenceTreeModel) SerialisationHelper.deserialise(attrPref.getBinaryValue(), this.getClass().getClassLoader());
return iptm;
}
catch (CtxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//returns null if no preference is found in the database.
return null;
}
}