borinquenkid opened a new issue, #16813:
URL: https://github.com/apache/grails-core/issues/16813
Split from audit #16804 (findings F15b, F22, F27).
### Problem Description
Correlating subqueries and aliases in criteria queries fails in three
related scenarios:
1. **Root Alias Registration (F15b)**: `JpaCriteriaQueryCreator` never
registers the root alias in `JpaQueryContext`, making `{alias}` or root
variable expressions unresolvable from subqueries (see also #14623).
2. **Nested Alias Paths (F22)**: In `DetachedCriteriaTransformer`, alias
checks use `pe.getObjectExpression().getText()`. For nested paths like
`t.club.id` in `exists(Club.where { id == t.club.id })`,
`getObjectExpression()` returns `t.club` which does not match alias `t`.
3. **Cloned Alias Preservation (F27)**: `AbstractDetachedCriteria.clone()`
omits `criteria.@alias = this.alias`, so derived criteria (`whereLazy`, `sort`,
`build`) lose their root alias.
### Expected Behavior
- `JpaCriteriaQueryCreator` should register root aliases in
`JpaQueryContext`.
- `DetachedCriteriaTransformer` should inspect the root of the expression
chain to resolve aliases across nested property paths.
- `AbstractDetachedCriteria.clone()` should copy `this.alias`.
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