About merge

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Issue
1

JPA Composite Key make Object Db throws "Unexpected exception (Error 990)"

Unfortunately, while merging the entity, object db is throwing the following Exception : [ObjectDB 2.4.0
Forum
1

Lazy loading does not work - crud takes long

need for 50 Records 1 second to remove. for(Datapoint d: list){ em.remove(em.merge(d))}   The class
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1

Mapped By Fetch is very Slow

("child" +i);    child2.setMyEntity(e1);    e1.setEntityChild(child2);    em.merge(e1);   }   em
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1

Master database switching to read-only mode, possibly caused by slave failure

.EMImpl.merge(EMImpl.java:456) at sun.reflect.GeneratedMethodAccessor528.invoke(Unknown Source
Forum
1

Multiple joins did not return expected result

which must be doubled if I use 2 variables. Thanks Markus Running two different separate queries and merging
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1

NullPointerException while setting a new property value

.persist(o); } else { em.merge(o
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1

Optimistic locking: prevent version increment on entity collection attribute

(); em.merge(tmpDoc); // This is fine as well but should get the collection back from
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1

OrphanRemoval not working?

. When saving the entity, I'm using merge and flush. The entity object is managed, so I think
Forum
1

Package name for persisted entities

Hi, I have a question about package name and searching for entities. As for now we were using two different databases for two different parts of our system. But we want to make a 'common' model for both systems. After merging entities from two different projects, we get single jar with all entities
Forum
1

Performance and memory usage of queries

.merge(myEntity);    for (int m = 0; m < steps; m++) {     MyEntityElement myEntityElement = new