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Different behavior with persist() and queried instances?

db and the list of the object is marked as empty - Now close the entity manager and create a new ... the transaction -> FAIL, the list of the object is still set to empty in db eventhough it is filled Btw ... .makeDirty(object, "listPropertyName"); doesn't change it, the list is still empty in db after commit


Moshal You can disable the L2 cache (or empty it with evict) and empty the EntityManager (L1) cache ... to automatically refresh objects in the L2 cache? You can empty the L2 cache or remove a specific class / object from that cache. support Support

Pooling of EntityManagers

call entityManager.clear() does the first level cache is empty then? If not does fetching an object, wich ... -managers in embeddet mode. best regards Arne Arne Arne Stocker If you call clear then you empty ... an empty one. However, i will test it. thanks again Arne Arne Arne Stocker

PersistenceManager.getObjectsById(Collection,boolean) throwing JDOException

the verification argument. What happens if getObjectsById() is called with an empty collection? carr.onstott Carr Onstott There are no known issues with this method. If you pass an empty collection the method should return an empty collection. It should work with single or multiple IDs and with any collection

First persist takes long time

these initializations for many odb files, consider registering all the types in an empty odb file (e.g. by accessing the types using the JPA Metamodel API) and then you can duplicate that empty odb file (with the types) when necessary. support Support

Problem Using Reflection

I'm currently working on developing my own API to use with ObjectDB and I'm running into the following problem. Using the API I can insert data into an empty database without any issues ... is empty without any problems. Trying to add data once data has already been added for this class

Insertion Speed Rate and Batch Load

You are right - to reuse an EntityManager in this scenario you have to empty it after commit:     em.getTransaction().commit();     em.clear(); // empty the persistence context This is especially essential

Removing an entity throws exception

are empty. The query: em.createQuery("select c from Customer c").getResultList(); Code for removing ... empty db it works correctly. The objectdb doctor analysis has not found an error. Clearing the old

com.objectdb.o.InternalException: java.lang.NullPointerException

, even an empty database with that schema may be useful for reproducing the issue. support Support ... . Pablo Berra Pablo Berra The suggestion on #6 above is to create a new empty database and then persist 2 empty instances of the relevant classes, rather than to use a production database and delete

Table view does not work for queries

This shows that table view does not work for queries Trianglehead Json Error The attached database seems to be empty. support Support Here it is. Not sure why that was empty. Trianglehead Json Error Thank you for this report. Build 2.8.3_04 should fix this issue. support Support Thanks! So I need

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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