" *Also, is it possible to run 2 entity managers in the same runtime? I can't seem to find any documentation on doing so.*"
You can create more than one instance of em from emf and each one will have its own persistence context. Albert. On Mon, Mar 10, 2014 at 10:27 PM, Todd Nine <[email protected]> wrote: > Hi guys, > I have a strange use case I can't get any help with in the user mailing > list. I'm hoping you guys can give me a hand. I'm the author of this plug > in. > > https://github.com/riptano/hector-jpa/ > > This is not an XA data store, and doesn't participate in transactions. I'm > attempting to help a user with an online migration from this Cassandra > plugin to MySQL. Initially, I thought using slices would be the solution. > However, since the Hector JPA adapter is not a JDBC connector, this > doesn't work. > > My next thought is to proxy changes that occur on commit (in the open jpa > transaction, not the JDBC one) through to another Entity Manager that is > connected only to MySQL. This way, we get the dual write functionality we > need for online migration, and we can perform background migration. > > Can you guys provide any examples on doing something like this? I'm not > sure where to start. > > Also, is it possible to run 2 entity managers in the same runtime? I can't > seem to find any documentation on doing so. > > Thanks, > Todd > -- Albert Lee.
