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	Query all objects that implements a given interface - is that possible? Hi, I am trying query one of my DB - for all object types that implement a given interface. TypedQuery<Signal ... ; em.createQuery("SELECT bk FROM Object bk WHERE bk instanceof Signal_Interface
	URGENCY, or in query does not report any objects on first operand having no results this query does not return any objects even there are lot of objects to return for the second operand: select a from Action a where (a.state = 2 or a.state = 3) and a.type = 0 and a.transferred = 0 if the query is changed to select a from Action
	calling persist on an object more than once , then it might be helpful to: a) provide a better help message (ie: 'you called persist more than once on object ... regarding the Object">persist method:
	A few questions on object database design and disadvantages in each method. In many cases using embedded objects improves performance by ... , if the entity object becomes too big and it includes a lot of data that is not always needed, it may not
	Problem with merging / persisitng objects with @Embeddable field Hi, After migration to version 2.4.2_01, I have noticed a strange problem with persisting object with field that contains @Embeddable object. Please check attached exception. Relation between entities looks like this:
	Optimistic lock failed : object has version .. instead of .. .OptimisticLockException Optimistic lock failed for object entities.Record#'1405/838/2011/121' (object has version 125
	Adding multi part path index on non-embedable object member Is there a way to add single member index on members of a object member which is not configured embedable but is/are mapped by id like the two members below. says it works on embedded objects only. So since it reference only, what is suggested way
	JPA CriteriaQuery -- Iterate Expression> ... i.e. the searchString is always decorated with %searchString%. The Person object can contain many Record objects. I would like to update my query below to include a similar 'like
	finding post-persist pre-commit objects Hi, I'm wondering if there is a way to have post-persisted, pre-committed, objects show up in queries? ie: the object has been persisted, but not yet committed. Dave dmoshal David Moshal Yes, by
	cannot delete objects after crash (see issue 2283) after the crash we cannot delete specific objects, see screenshots of explorer. Database will be soon available (size 5.561.119 KB) on hummingbird-systems.com, user/pw your db ... Hans-Georg Zwicker our performance monitoring shows that creating of object structures