Search predicate which can be used to filter domain objects from the remote server using searchable repository.

Specification is defined in DSL with keyword specification and a predicate. Server can convert specification to SQL query on the fly or call database function created at compile time. Other optimization techniques can be used too.

DSL example:

module Todo {
  aggregate Task {
    Timestamp createdOn;
    specification findBetween
        'it => it.createdOn >= after && it.createdOn <= before' {
      Date after;
      Date before;
    }
  }
}