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12

Remove not working

;drop"; EntityManagerFactory emf = Persistence.createEntityManagerFactory(url ... ("javax.jdo.option.ConnectionURL", "Test.odb;drop"); PersistenceManagerFactory ... CBE Ah, my problem above was using "Test.odb;drop" instead of "Test.tmp;drop". I'll post a new test
12

Performance in large transactions

() {   EntityManagerFactory emf = Persistence     .createEntityManagerFactory("objectdb:$objectdb/db/test.tmp;drop ... ("objectdb:$objectdb/db/test.tmp;drop");   EntityManager em = emf.createEntityManager();   em ... =             Persistence.createEntityManagerFactory(                 "objectdb:$objectdb/db/test.tmp;drop
12

Persist error @ManyToMany how to define correct entities relationships

/db/testc.tmp"); //;drop em = emf.createEntityManager ... = Persistence.createEntityManagerFactory( "objectdb:$objectdb/db/testc.tmp"); //;drop ... .createEntityManagerFactory( "objectdb:$objectdb/db/testc.tmp"); //;drop em = emf
10

Database absolute filepath

;drop"); System.out.println(emf.getProperties()); System.out.println(emf.getProperties ... Why did you call it test.tmp instead of test.odb? What does the keyword drop at the end of the line do? ThreaT Ashton Hogan The drop parameter indicates a request to discard an old database (if exists
10

Too many persistable types (>10) - exceeds evaluation limit

.option.ConnectionURL" value="objectdb://localhost:6136/jdo.tmp;drop"/> <!-- ;drop is necessary ... without the added ;drop in the connectionURL. Still the error occurs... smuessemeier Stefan
10

Merge Issue: Attempt to reuse an existing primary key value

= Persistence.createEntityManagerFactory(                 "objectdb:$objectdb/db/test.tmp;drop ... =             Persistence.createEntityManagerFactory(                 "objectdb:$objectdb/test.tmp;drop ... =             Persistence.createEntityManagerFactory(                 "objectdb:$objectdb/test.tmp;drop
10

Left join fetch behaviour doesn't retrieve children?

= Persistence.createEntityManagerFactory(                 "objectdb:$objectdb/db/test.tmp;drop ... .createEntityManagerFactory("objectdb:$objectdb/db/test.tmp;drop");   EntityManager em = null;   // Merge ... ) {   EntityManagerFactory emf = Persistence.createEntityManagerFactory("objectdb:$objectdb/db/test.tmp;drop
8

Schema-Update: Rename superclass and remove one subclass

.createEntityManagerFactory("objectdb:test.tmp;drop"); EntityManager em = emf.createEntityManager ... (String[] args) { // no drop - reuse the existing file EntityManagerFactory emf = Persistence
2

Tracking changes to new collections (in enhancement mode) after flush

;drop";         EntityManagerFactory emf = Persistence.createEntityManagerFactory(dbUrl ... :\\test.tmp;drop"); EntityManager em ... ());                  String dbUrl = "objectdb:F2640c.tmp;drop";         EntityManagerFactory emf = Persistence
1

Unexpected exception (Error 990) com.objectdb.o.InternalException

=             Persistence.createEntityManagerFactory(                 "objectdb:$objectdb/db/test.tmp;drop ... .createEntityManagerFactory(                 "objectdb:$objectdb/db/test.tmp;drop");         EntityManager em = emf

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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