As for the datastore - you can create abstract DAO layer which hides the actual implementation. Try AuDAO tool (http://audao.spoledge.com) to generate an abstract DAO layer + implementation for GAE, MySQL or Oracle DBs. However, if you want to optimize the code and also due to several restrictions on GAE's datastore (queries, transactions and keys), even the abstract DAO layer will differ for GAE and e.g. MySQL implementations (e.g. in GAE it can be more efficient to use multi- value fields = Lists than to decompose the entity (table) into more entities (tables)).
Vaclav On May 22, 12:35 am, aijazzz <aija...@gmail.com> wrote: > Hi, > I was looking to some examples to start my work on google appengine > application and found out that I have to use appengine related code in > source. For example, in a database example I found this, > import com.google.appengine.api.datastore.Key; > > I am wondering if there is a way I can keep my code clean so that I > can use same code in another environment? > Please suggest. Thanks. > > regards, > Ijaz > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > For more options, visit this group > athttp://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
