Is it safe to store collection name in class of firestore Project class file?

We are making a Firestore query by using collection name, so I thought to store collection name in a static class, or in the same class something like:

 private static final String collUsers = "users";

and then use something like db.collections(collUsers).documents()

So is it safe to store collection names in fields?

> Is it safe to store the collection name in the class of Firestore Project class file?

Sure, it is. The collection names are always Strings. You can use them directly in your reference:

db.collections("users").documents()

Or you can save that name in a variable. However, if you do that, that variable becomes a constant, as the name of the collection cannot be changed. So most probably the variable name might look like this:

public static final String USERS_COLLECTION = "users";

So the problem is not that you keep these names in your project file, the problem is how you read, write, and delete the data that exists there. In that case, you should always secure that data using Firestore Security Rules.

Yes, it's safe to keep your query for firestore open, until you have firestore rules in place which guard your data against any misuse and edits.

If you want to know more about securing your data: Read this