Hi Denis, Generally speaking, I believe that the schema-first approach natively addresses the issue if duplicate fields in key and value objects, because schema will be created for a cache, not for an object, as it happens now. Basically, the schema will define whether there is a primary key or not, and which fields are included in case there is one. Any API that we would have must be compliant with this, so it becomes fairly easy to work with data as with a set of records, rather than key-value pairs.
However, could you please elaborate on the relation between Ignite and ORM? Is there a use case for Hibernate running on top of Ignite (I haven't seen one so far)? If so, what is missing exactly on the Ignite side to support this? In my understanding, all you need is SQL API which we already have. Am I missing something? -Val On Mon, Aug 31, 2020 at 2:08 PM Denis Magda <dma...@apache.org> wrote: > Val, > > I would propose adding another point to the motivations list which is > related to the ORM frameworks such as Spring Data, Hibernate, Micronaut and > many others. > > Presently, the storage engine requires to distinguish key objects from the > value ones that complicate the usage of Ignite with those ORM frameworks > (especially if a key object comprises several fields). More on this can be > found here: > > http://apache-ignite-developers.2346864.n4.nabble.com/DISCUSSION-Key-and-Value-fields-with-same-name-and-SQL-DML-td47557.html > > It will be nice if the new schema-first approach allows us to work with a > single entity object when it comes to the ORMs. With no need to split the > entity into a key and value. Just want to be sure that the Ignite 3.0 has > all the essential public APIs that would support the single-entity based > approach. > > What do you think? > > - > Denis > > > On Fri, Aug 28, 2020 at 3:50 PM Valentin Kulichenko < > valentin.kuliche...@gmail.com> wrote: > > > Igniters, > > > > One of the big changes proposed for Ignite 3.0 is the so-called > > "schema-first approach". To add more clarity, I've started writing the > IEP > > for this change: > > > > > https://cwiki.apache.org/confluence/display/IGNITE/IEP-54%3A+Schema-first+Approach > > > > Please take a look and let me know if there are any immediate thoughts, > > suggestions, or objections. > > > > -Val > > >
