fix: balance query with custom transaction model

[dolcalmi]

Problem

Custom schema attributes are not setup correctly for balance query

Solution

• Use parseFilterQuery logic
• Keep meta attribute only for snapshot related methods

Maybe not the cleaner solution but doesn't change other collections schema/behavior

---

Related issue: #58

[koresar]

Missing a unit test in balance.spec.ts where we would query a balance of a custom schema.

[Uzlopak]

I was on vacation for 3 weeks. I will have a look at it today or tomorrow.

[Uzlopak]

@dolcalmi

You want to work on this now? :)

[dolcalmi]

@dolcalmi

You want to work on this now? :)

if you have a better/cleaner approach let me know, I will be glad to help

[Uzlopak]

I dont see any dangerous code.

[Uzlopak]

Btw. When the balance snapshotting was implemented I was not very happy about the fact that i did not quite understood the mechanics completely. So I worked the last months on the mongoose code, to get deeper understanding regarding the mongodb and mongoose. Fun Fact: I am now an official contributor of mongoose - LOL.

I will maybe, when I have time inspect the snapshotting of balances further more to ensure we have no race conditions or so.