10.3.1. Compile time or run time?
Queries, actions and perspectives are described as particular data structures that are part of a (compiled) model. We may contextualise them in compile time to new versions that we can store in the model. Alternatively, it turns out, we can adapt the runtime engine to carry out the contextualisation of an abstract structure in a concrete situation. As this text will show, we pursue a mixed strategy on further expanding Perspectives, contextualising some structures in compile time, others in run time.