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do I have to duplicate entity.id.field2 into entity.field2 and then set an index on it? I ... > Thank you. I understand. Another question about indexes: is there any insert/query

>  I downloaded guestbook-web.zip (the maven project) and imported it into eclipse but I now ... . In the end it worked inserting the following datasource in pesistence.xml

each salesman back into the database to keep it in step. The code i have to do this is akin to: In fact, a more useful snippet for improvement would be where I'm inserting

, each with multiple threads, writing messages. The message is split into a lightweight metadata ... below. The message is made up of an id, insert-time, priority and the payload is a large string.

. A generated id is not guaranteed to be available until after the database insert has occurred. Returns null

. A generated id is not guaranteed to be available until after the database insert has occurred

"> Whether the element is to be stored serialized (into a join table) Whether the element is to be stored serialized (into a join table ... > whether the element is to be stored serialized (into a join table)

> Whether the value is to be stored serialized (into a single ... "> Whether the value is to be stored serialized (into a single column of a join table). Whether the value is to be stored serialized (into a join table)

JDO JavaDoc Reference Documentation - PersistenceManager is the primary interface for JDO-aware application components.

classes in the cache are first flushed to the datastore. Instances in the cache or brought into the cache ... before being put into the result Collection.