CoreConnection.java

} else if (className.equals("IrcUser")) {
    switch (function) {
        case "partChannel":
            Log.d(TAG, "Sync: IrcUser -> partChannel");
            String[] tmp = objectName.split("/", 2);
            int networkId = Integer.parseInt(tmp[0]);
            String userName = tmp[1];
            Bundle bundle = new Bundle();
            bundle.putString("nick", userName);
            bundle.putString("buffer", (String) packedFunc.remove(0).getData());
            handler.obtainMessage(R.id.USER_PARTED, networkId, 0, bundle).sendToTarget();
            break;
        case "quit":
            Log.d(TAG, "Sync: IrcUser -> quit");
            tmp = objectName.split("/", 2);
            networkId = Integer.parseInt(tmp[0]);
            userName = tmp[1];
            handler.obtainMessage(R.id.USER_QUIT, networkId, 0, userName).sendToTarget();
            break;
        case "setNick":
        case "setServer":
        case "setAway":
        case "setAwayMessage":
        case "setRealName":
            Log.d(TAG, "Sync: "+className+" -> "+function);
            try {
                SyncMethodMessage p = new SyncMethodMessage();
                p.from(className, objectName, function, packedFunc);

                Message msg = handler.obtainMessage(R.id.DIRECT_MESSAGE);
                msg.obj = p;
                msg.sendToTarget();
            } catch (ArrayIndexOutOfBoundsException e) {
                final String networkIdString = objectName.split("/")[0];
                Log.e(TAG, "Tried to execute "+function+"() on nonexisting object "+objectName);
                Log.e(TAG, "Existing objects in Net: "+Client.getInstance().getNetworks().getNetworkById(Integer.valueOf(objectName.split("/")[0])).getUserList());
                Log.e(TAG, "Existing objects in Client: "+Collections2.filter(Client.getInstance().getObjects(objectName).keySet(), new Predicate<String>() {
                    @Override
                    public boolean apply(String input) {
                        return input.startsWith(networkIdString);
                    }
                }));
            }
            break;
    }
}

CoreConnService.java

    /**
     * Handler of incoming messages from CoreConnection, since it's in another
     * read thread.
     */
    class IncomingHandler extends Handler {
        public boolean disabled = false;

        @Override
        public void handleMessage(android.os.Message msg) {
            if (msg == null || coreConn == null || disabled) {
                return;
            }
            Buffer buffer;
            IrcMessage message;
            List<IrcMessage> messageList;
            Bundle bundle;
            IrcUser user;
            String bufferName;
            switch (msg.what) {
                case R.id.DIRECT_MESSAGE:
                    Message p = (Message) msg.obj;
                    p.apply();
            }
        }

IrcUser.java

/*
    QuasselDroid - Quassel client for Android
 	Copyright (C) 2011 Ken Børge Viktil
 	Copyright (C) 2011 Magnus Fjell
 	Copyright (C) 2011 Martin Sandsmark <[email protected]>

    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the Free
    Software Foundation, either version 3 of the License, or (at your option)
    any later version, or under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either version 2.1 of
    the License, or (at your option) any later version.

 	This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License and the
    GNU Lesser General Public License along with this program.  If not, see
    <http://www.gnu.org/licenses/>.
 */

package com.iskrembilen.quasseldroid.protocol.state;

import android.support.annotation.NonNull;
import android.util.Log;

import com.iskrembilen.quasseldroid.R;
import com.iskrembilen.quasseldroid.protocol.qtcomm.EmptyQVariantException;
import com.iskrembilen.quasseldroid.protocol.qtcomm.QVariant;
import com.iskrembilen.quasseldroid.protocol.qtcomm.QVariantType;
import com.iskrembilen.quasseldroid.protocol.state.serializers.Syncable;
import com.iskrembilen.quasseldroid.protocol.state.serializers.SyncableObject;

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Observable;

public class IrcUser extends SyncableObject implements Comparable<IrcUser> {
    @Syncable(type=QVariantType.String)
    public String name;
    @Syncable(type=QVariantType.Bool)
    public boolean away;
    @Syncable(type=QVariantType.String)
    public String awayMessage;
    @Syncable(type=QVariantType.String)
    public String ircOperator;
    @Syncable(type=QVariantType.String)
    public String nick;
    @Syncable(type=QVariantType.StringList)
    public List<String> channels = new ArrayList<String>();
    @Syncable(type=QVariantType.String)
    public String server;
    @Syncable(type=QVariantType.String)
    public String realName;
    @Syncable(type=QVariantType.String)
    public String host;
    @Syncable(type=QVariantType.String)
    public String user;
    // public Date loginTime;
    // public Date idleTime;
    @Syncable(type=QVariantType.Bool)
    public boolean encrypted;
    @Syncable(type=QVariantType.Int)
    public int lastAwayMessage;

    public int networkId;

    public String toString() {
        return nick + " away: " + away + " Num chans: " + channels.size();
    }

    public void changeNick(String newNick) {
        nick = newNick;
        this.setChanged();
        notifyObservers(R.id.USER_CHANGEDNICK);
    }

    public void notify(int id) {
        this.setChanged();
        notifyObservers(id);
    }

    @Override
    public int compareTo(@NonNull IrcUser another) {
        return this.nick.compareToIgnoreCase(another.nick);
    }

    public void setServer(String server) {
        this.server = server;
    }

    public void setNick(String nick) {
        this.nick = nick;
    }

    public String getObjectName() {
        return networkId+"/"+nick;
    }

    public void setAway(boolean away) {
        this.away = away;
    }

    public void setAwayMessage(String awayMessage) {
        this.awayMessage = awayMessage;
    }

    public void setRealName(String realName) {
        this.realName = realName;
    }
}

SyncableObject.java

package com.iskrembilen.quasseldroid.protocol.state.serializers;

import com.iskrembilen.quasseldroid.protocol.qtcomm.EmptyQVariantException;
import com.iskrembilen.quasseldroid.protocol.qtcomm.QVariant;
import com.iskrembilen.quasseldroid.protocol.qtcomm.QVariantType;
import com.iskrembilen.quasseldroid.protocol.state.Client;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import java.util.Observable;

public abstract class SyncableObject extends Observable {

    public void register() {
        register(getObjectName());
    }

    public void register(String name) {
        Client.getInstance().putObject(getClassName(),name,this);
    }

    public void unregister() {
        unregister(getObjectName());
    }

    public void unregister(String name) {
        Client.getInstance().removeObject(getClassName(),name);
    }

    public String getClassName() {
        return getClass().getSimpleName();
    }

    public String getObjectName() {
        return String.valueOf(this.hashCode());
    }

    /** Stores the object's state into a QVariantMap.
     *  The default implementation takes dynamic properties as well as getters that have
     *  names starting with "init" and stores them in a QVariantMap. Override this method in
     *  derived classes in order to store the object state in a custom form.
     *         DO NOT OVERRIDE THIS unless you know exactly what you do!
     *
     *  @return The object's state in a QVariantMap
     */
    public QVariant<Map<String,QVariant<?>>> toVariantMap() {
        Map<String,QVariant<?>> map = new HashMap<>();

        // Iterate through all attributes of the class
        for (Field field : this.getClass().getDeclaredFields()) {
            try {
                Syncable annotation = field.getAnnotation(Syncable.class);
                if (annotation!=null) {
                    // If the attribute is annotated as Syncable
                    String name;

                    // If no custom name is specified, use the name of the annotation
                    if (annotation.name().isEmpty())
                        name = field.getName();
                    else
                        name = annotation.name();

                    // Set the field accessible for us
                    field.setAccessible(true);

                    // If the type is usertype, use the usertype instead
                    if (annotation.type()== QVariantType.UserType)
                        map.put(name, new QVariant<>(field.get(this), annotation.userType()));
                    else
                        map.put(name, new QVariant<>(field.get(this), annotation.type()));
                }
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
        return new QVariant<>(map,QVariantType.Map);
    }

    public void fromVariantMap(QVariant<Map<String,QVariant<?>>> packedMap) throws EmptyQVariantException {
        fromVariantMap(packedMap.getData());
    }

    /** Initialize the object's state from a given QVariantMap.
     *  see toVariantMap for important information concerning this method.
     */
    public void fromVariantMap(Map<String,QVariant<?>> map) throws EmptyQVariantException {
        // Iterate through all attributes of the class
        for (Field field : this.getClass().getDeclaredFields()) {
            try {
                Syncable annotation = field.getAnnotation(Syncable.class);
                // If the attribute is syncable
                if (annotation != null) {
                    // Set the attribute accessible
                    field.setAccessible(true);

                    // Use field name if no custom name is set
                    String name;
                    if (annotation.name().isEmpty()) {
                        name = field.getName();
                    } else {
                        name = annotation.name();
                    }

                    // Set the value from the QVariantMap
                    if (map.containsKey(name)) {
                        field.set(this, map.get(name).getData());
                    }
                }
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
    }

    public void fromOther(SyncableObject other) {
        if (this.getClass() != other.getClass())
            throw new IllegalArgumentException("Can’t initialize "+this.getClass().getSimpleName()+" with values from object of type "+other.getClass().getSimpleName());

        // Iterate through all fields in the object
        for (Field field : this.getClass().getDeclaredFields()) {
            try {
                Syncable annotation = field.getAnnotation(Syncable.class);
                // If the field is syncable
                if (annotation!=null) {
                    // Set the attribute accessible for us
                    field.setAccessible(true);
                    // Set the value of the attribute from the other object’s attribute
                    field.set(this,field.get(other));
                }
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
    }

    public void execute(String function, QVariant<?>... rawArgs) throws EmptyQVariantException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        Object[] args = new Object[rawArgs.length];
        Class[] argTypes = new Class[rawArgs.length];

        for (int i = 0; i< rawArgs.length; i++) {
            args[i] = rawArgs[i].getData();
            argTypes[i] = rawArgs[i].getType().getJavaType();
        }

        Method method = this.getClass().getMethod(function, argTypes);
        method.setAccessible(true);
        method.invoke(this, args);
    }
}