ObjectDB ObjectDB

Internal Website Search

91-100 of 138 resultsRefresh

Should derived fields of an EmbeddedId be manually maintained by app code?

.TestException; @Entity @NamedQueries({ @NamedQuery(name = "numberOfMapItems", query = "SELECT COUNT(x

Entity has be persistended,but query not fetched?

);         System.out.println("count: " + query.getResultList().size());         em.getTransaction

errors on repair

we are using version 2.6.7. On running the doctor we have message like free page list broken ... unexpected total page count ... what could be the reason for this ? hgzwicker Hans-Georg Zwicker Unfortunately these are critical errors that indicate a corrupted database file. Please provide

How to check if an entity exists in a Database without loading it?

WHERE e.pk = :pk or SELECT COUNT(e) FROM MyClass e WHERE e.pk = :pk support Support

Query filter comparing Dates

am comparing 2 dates which should be equal because they are showing exactly same inner millisecond count. I

Concerning coding style of the example in the posting instructions

and test cases, I contest that it breaks the rules for JPA2 entities on at least 2 counts. Firstly

Online Backup degrades responsiveness.

count, but still not completely fixes the issue and I'm not sure how scalable this and costly

New entity objects are duplicated on merge cascading

.createEntityManager();         Query query = em.createQuery("SELECT COUNT(c) FROM Chapter c

Getting an error when adding activation code to conf file

= em.createQuery("SELECT count(my) from MyEntity my"); System.out.println(q1

ObjectDB 2.3.4

Added OSGi support. Added support of MEMBER OF for inverse (mapped by) collections. Changed logging of incomplete recovery records from WARNING to TRACE (issue #565). Changed main configuration elements from required to optional. Fixed the "Negative snapshot user count" bug (issue #556). Fixed

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support