[google-appengine] Mutation of instances and other facilities for modern system development.
Hi, It is my first post here, I have been searching a while but have not found any help on how to solve some of the functionality needed in evolvable systems of today. What I am looking for is not new, it is something that I (and a lot of systems developers) have been using during last 20 years more, known as instance mutation facilities. It is needed in any mediumbig application development while working with objects, not in the old way (+30years) of writing code and restarting programs. I will put it in short questions and hope here will find experts to guide me to good references in documentation (sorry to ask, but I have not found it in the docs): 1.- How do you get a collection with all instances of a class present in the system (or running subspace) ? 2.- How do you change one instance with another (of the same species or not) while the system is running ? (all refering objects will see the new object where the old was pointed, as become operation or better... massive become) 3.- How do you change an object to one of other class? (e.g. anObject changeClassTo: aClass ) preserving identity but mutating (change of behavior and shape). 4.- Any support for Traits? 5.- Any support for continuations? Don´t worry to give references in any language that can be used in appengine, or if it is required low level work. Any guide or quick link will be really appreciated! [*] thanks in advance, Ale. [*] please don't respond asking why I want/need to do --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Mutation of instances and other facilities for modern system development.
Hi, It is my first post here, I have been searching a while but have not found any help on how to solve some of the functionality needed in evolvable systems of today. What I am looking for is not new, it is something that I (and a lot of systems developers) have been using during last 20 years more, known as instance mutation facilities. It is needed in any mediumbig application development while working with objects, not in the old way (+30years) of writing code and restarting programs. I will put it in short questions and hope here will find experts to guide me to good references in documentation (sorry to ask, but I have not found it in the docs): 1.- How do you get a collection with all instances of a class present in the system (or running subspace) ? 2.- How do you change one instance with another (of the same species or not) while the system is running ? (all refering objects will see the new object where the old was pointed, as become operation or better... massive become) 3.- How do you change an object to one of other class? (e.g. anObject changeClassTo: aClass ) preserving identity but mutating (change of behavior and shape). 4.- Any support for Traits? 5.- Any support for continuations? Don´t worry to give references in any language that can be used in appengine, or if it is required low level work. Any guide or quick link will be really appreciated! [*] thanks in advance, Ale. [*] please don't respond asking why I want/need to do that nor suggesting to avoid the operations :-) --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
