Forum ‹ BigDB ‹ How does DatabaseObject detect changes?

[cjcenizal]

Let's say I query a table and get a DatabaseObject that looks like this:

Code: Select all

tableKey = {
   inventory: {
      0,
      1,
      2,
      3   
   }
}

Let's say in my AS3, I do this:

Code: Select all

var dbObject:DatabaseObject = /* query that returns the above object */;
dbObject.inventory = { 0, 1, 2, 3 };
dbObject.save();

I've read on the forums that DatabaseObjects only save changes. In this situation, what does it do? I have "changed" it by overwriting a property, but I've overwritten it with identical data to what was there previously. Does all of this identical data qualify as a change it will try to save?

[Oliver]

In AS3, changes are found by comparing the loaded object with the object being saved. This comparison is being done at save time, and since the objects in this case are identical, nothing will be sent to BigDB.

The C# client is different. It only tracks which fields are dirty, and sends all fields marked as dirty to the backend on every save.

-Oliver

[cjcenizal]

That's awesome. Thanks Oliver!