Firebase ServerValue.TIMESTAMP in Java data models objects

Question

I\'m new to Firebase, and I\'ve been really enjoying it so far. I\'m running into a problem; I\'m using the FirebaseListAdapter similar to the tutorial outline here: https:

Answer 1

This sounds similar to this question: When making a POJO in Firebase, can you use ServerValue.TIMESTAMP?

When creating POJOs used to store/retrieve data apart from the default empty constructor I usually use a constructor similar to this:

Param param1;
Param param2;
HashMap timestampCreated;

//required empty constructor
public DataObject(){}

public DataObject(Param param1, Param param2) {
       this.param1 = param1;
       this.param2 = param2;
       HashMap timestampNow = new HashMap<>();
       timestampNow.put("timestamp", ServerValue.TIMESTAMP);
       this.timestampCreated = timestampNow;
}

Be sure to include a getter for the HashMap<> used to store the Timestamp:

public HashMap getTimestampCreated(){
    return timestampCreated;
}

Then use the @Exclude annotation to create a getter that you can use in your code to get the value of the timestamp if you need it. The @Exclude annotation will cause Firebase to ignore this getter and not look for a corresponding property

@Exclude
public long getTimestampCreatedLong(){
    return (long)timestampCreated.get("timestamp");
}