Move or copy a Firebase path to a new location

firebase_copy.js

function copyFbRecord(oldRef, newRef) {    
     oldRef.once('value', function(snap)  {
          newRef.set( snap.value(), function(error) {
               if( error && typeof(console) !== 'undefined' && console.error ) {  console.error(error); }
          });
     });
}

firebase_move.js

function moveFbRecord(oldRef, newRef) {    
     oldRef.once('value', function(snap)  {
          newRef.set( snap.value(), function(error) {
               if( !error ) {  oldRef.remove(); }
               else if( typeof(console) !== 'undefined' && console.error ) {  console.error(error); }
          });
     });
}

Java implementation

public void moveFirebaseRecord(Firebase fromPath, final Firebase toPath)
    {
        fromPath.addListenerForSingleValueEvent(new ValueEventListener()
        {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot)
            {
                toPath.setValue(dataSnapshot.getValue(), new Firebase.CompletionListener()
                {
                    @Override
                    public void onComplete(FirebaseError firebaseError, Firebase firebase)
                    {
                        if (firebaseError != null)
                        {
                            Timber.d("moveFirebaseRecord() failed. firebaseError = %s", firebaseError);
                        }
                        else
                        {
                            Timber.d("moveFirebaseRecord() Great success!");
                        }
                    }
                });
            }

            @Override
            public void onCancelled(FirebaseError firebaseError)
            {
                Timber.d("moveFirebaseRecord() failed. firebaseError = %s", firebaseError);
            }
        });
    }

Is that Java code a Move or Copy?

It appears to me to be a Copy, as there is no .remove() ?

Are these functions still valid for Firebase 3?

firebase_copy.js
firebase_move.js

This line reminds me of the reason StringUtils was created :)

           if( error && typeof(console) !== 'undefined' && console.error ) {  console.error(error); }

instead of

newRef.set( snap.val(), function(error) {

you may want to do:

newRef.update( snap.val(), function(error) {

if you want to ADD the data instead of REPLACING all your existing child with the data you want to move.

Any way to easily copy and preserve $priority for each item? Although, I have read somewhere that using $priority is not recommended anymore. However, it's useful for enabling sorting/ordering of key-value pairs in an object that absolutely need both key and value to make references to another object.

Firebase 3.x and Promise version of this.

https://gist.github.com/jofftiquez/f60dc81b39d77cd4eb1f5b5cbe6585ad

I'm looking for a Cloud Firestore version of copy and move. Any ideas?