id = null after create new record

[sigeje]

I'm confused with this issue and don't know how to resolve it.
I write the code like this (some not related code was erased) :

 public void onReceive(Context context, Intent intent) {

        Conversations conv = null;
        conv = saveToDb(context, sender, body, cat, "R");

        pushNotification(context, conv);

}

public static Conversations saveToDb(Context context, 
        String recipient, String body, String category, String type) {
    String snippet = (body.length() > 30 ) ? body.substring(0, 30) + "..." : body;
    String date = System.currentTimeMillis() + "";

    List<Conversations> result = Conversations.find(
            Conversations.class, "RECIPIENT = ?", new String[]{recipient});

    Conversations conv = null;

    if( result.size() == 0) {
        conv = new Conversations(
                context, snippet, recipient, date);
    } else {
        conv = result.get(0);
        conv.recipient = recipient;
        conv.snippet = snippet;
        conv.date = date;
    }
    conv.save();

    message = new Messages(context, body, date, category, type, conv);
    message.save();

    return conv;
}

private void pushNotification(Context context, Conversations c) {

    Intent resultIntent = new Intent(context, MessagesActivity.class);
    Bundle b = new Bundle();
    b.putLong("conv_id", c.id); // c.id = null, then throw an nullpointerexception
    b.putString("recipient", c.recipient);
    resultIntent.putExtras(b);

}

In function saveToDb, if result.size() == 0 I create new record of Conversation class and then save it and return this object. And then I use the returned object to be parameter for function pushNotification. When function pushNotification read id of the object (c.id), it has value 0 and I get an error. I also have tried to debug this object value in each function and it shown that id has value 0 and others field have been filled with data I want to store in. In saveToDb function, I also save a new record of Messages class, and it has no error.
But if result.size is not 0, this all function is successfully done. what's wrong with my code ? why save a new record of Message class was successful but not for Conversation class ? :-/

[satyan]

Can you post your Conversation class too.. or see what's the difference between those two classes..

[sigeje]

ah, I see the difference, I declare an attribute called id as Long in Conversations class, but I didn't declare it in Messages class. I've try to remove public Long id, and it's successfully work. Why it's error if we declare Long id in SugarRecord subclass Sir ?

Message class :
public class Messages extends SugarRecord {

public String body;
public String date;
public String category;
public String type;

public Conversations conv;

public Messages(Context context) {
    super(context);
}

public Messages(Context context, String body,
        String date, String category, String type, Conversations conv) {
    super(context);
    this.body = body;
    this.date = date;
    this.category = category;
    this.type = type;
    this.conv = conv;
}

}

Conversations class :
public class Conversations extends SugarRecord {

//public Long id; <- it causes an error
public String snippet;
public String recipient;
public String date;

public Conversations(Context context) {
    super(context);
}

public Conversations(Context context, String snippet, String recipient, String date) {
    super(context);
    this.snippet = snippet;
    this.recipient = recipient;
    this.date = date;
}

}

[satyan]

ok. There's a similar property "Long id" defined in the SugarRecord class too. During reflection, it seems to cause a conflict.

[sigeje]

thanks Sir :)