Dear Qi4j creators,


I have some more questions regarding to Qi4j design and implementation. I have 
stated them as expressions, please comment whether they are correct or no (I 
presume at least some of them are not).



1. Two composites (instances) of the same composite type (class) may have 
different set of implemented interfaces

2. A set of interfaces implemented by a composite may be changed during the 
composite's lifecycle.

3. One composite may have two different implementations of the same interface.

4. A fragment instance can be shared between different composites without 
explicit intent of the fragment author (and/or the fragment user).

5. A reference injected into a @This annotated member may vary from call to 
call.

6. When an entity is deleted, references to it in other persisted entities are 
immediately removed.

7. Joins in the queries are fully supported (e.g. it is possible, with a signle 
query, to find all students and courses they attending where student name is 
Anna and course name contains Art)


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