mhemani opened a new issue, #14393:
URL: https://github.com/apache/grails-core/issues/14393
### Task List
- [ ] Steps to reproduce provided
- [ ] Stacktrace (if present) provided
- [ ] Example that reproduces the problem uploaded to Github
- [ ] Full description of the issue provided (see below)
### Steps to Reproduce
1. Create a Test MongoDB.
2. Create a Grails Domain called Order with static mapWith = "mongo", BSON
ObjectId id, Long orderId, (any other fields you desire) List<OrderItem>
orderItems and relationship static hasMany = [orderItems: OrderItem]
3. Create another Grails Domain called OrderItem with static mapWith =
"mongo", , BSON ObjectId id, Long orderId, (any other fields that you desire)
and relationship static belongsTo = [Order]
4. Create up a simple controller, view, service etc in Grails and hook it up.
5. Populate some data in your Mongo Collections such that order.orderItems
-> orderItem.id
6. In a Service method call:
Order.aggregate( [
Aggregates.lookup("orderitem", "orderItems", "_id", "orderItems")
] )
and observe the output for orderItems: [] is empty.
7. In a Service method call:
Order.collection.aggregate( [
Aggregates.lookup("orderitem", "orderItems", "_id", "orderItems")
] ).toList()
and observe the output for orderItems: [ ... ] has proper data.
### Expected Behaviour
When doing aggregate lookups, the lookup should return the join data.
### Actual Behaviour
Join data is missing when aggregate lookup is performed using Grails Domain.
Using the underlying collection to do aggregate lookup, join data is available.
### Environment Information
- **Operating System**: Win10
- **GORM Version:** 7.0.0
- **Grails Version (if using Grails):** 4.0.0
- **JDK Version:** 1.8
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