Examples of org.odmg.Transaction.commit()

org.odmg.Transaction.commit()
Commit and close the transaction. Calling commit commits to the database all persistent object modifications within the transaction and releases any locks held by the transaction. A persistent object modification is an update of any field of an existing persistent object, or an update or creation of a new named object in the database. If a persistent object modification results in a reference from an existing persistent object to a transient object, the transient object is moved to the database, and all references to it updated accordingly. Note that the act of moving a transient object to the database may create still more persistent references to transient objects, so its referents must be examined and moved as well. This process continues until the database contains no references to transient objects, a condition that is guaranteed as part of transaction commit. Committing a transaction does not remove from memory transient objects created during the transaction

                it2 = aMaster.collDetailFKnoPK.iterator();
                while (it2.hasNext())
                    database.deletePersistent(it2.next());
                database.deletePersistent(aMaster);
            }
            tx.commit();
            assertEquals("Wrong count of Master objects found", 4, counter);


            query = odmg.newOQLQuery();
            query.create("select masters from " + Master.class.getName() + " where masterText like $1");
            query.bind("%" + timestamp);

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            existing instance as dirty a second time.
            So it's no wonder why after deletePersistent(obj1); no contract is found.
            Works as designed.
            The Lesson to learn: never let business objects have the same primary key values!
             * */
            tx.commit();
            Collection result = getContract(contractPk, odmg);
            assertEquals("We should found exact one contract", 1, result.size());
            obj2 = (Contract) result.iterator().next();
            if (obj2 == null)
            {

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            // 2. Delete, then insert object with the same identity
            tx.begin();
            database.deletePersistent(obj2);
            database.makePersistent(obj1);
            tx.commit();
            result = getContract(contractPk, odmg);
            assertEquals("We should found exact one contract", 1, result.size());
            obj1 = (Contract) result.iterator().next();
            if (obj1 == null)
            {

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            }


            // 3. Delete
            tx.begin();
            database.deletePersistent(obj1);
            tx.commit();


            result = getContract(contractPk, odmg);
            if (result.size() > 0)
            {
                fail("Contract was not deleted");

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            example.addToStock(47);
            example.addToStock(7);
            example.addToStock(4);


            //System.out.println("now commit all changes...");
            tx.commit();
        }
        catch (Exception ex)
        {
            tx.abort();
        }

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            Article b = (Article) broker.getObjectByIdentity(oid);


            assertEquals("should be same object", a, b);


            //System.out.println("now commit all changes...");
            tx.commit();
        }
        catch (Exception ex)
        {
            tx.abort();
            fail("ODMGException: " + ex.getMessage());

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        ProductGroup pg = (ProductGroup) check.get(0);


        assertEquals(pg.getAllArticlesInGroup().size(), results.size());
        assertTrue((results.size() > 0));


        tx.commit();




        // close database


        db.close();

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//            OJB.getLogger().debug(results);


            String name = "gimme fruits_" + System.currentTimeMillis();


            db.bind(results, name);
            tx.commit();


            tx = odmg.newTransaction();
            tx.begin();


            ((TransactionImpl) tx).getBroker().clearCache();

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            assertEquals(originalSize, newResults.size());
            Article art = (Article) newResults.get(0);
            assertNotNull(art);
//            OJB.getLogger().info(results);


            tx.commit();


        }
        catch (Exception e)


        {

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            Article b = (Article) broker.getObjectByIdentity(oid);


            assertEquals("should be same object", a, b);


            //System.out.println("now commit all changes...");
            tx.commit();
        }
        catch (Exception ex)


        {
            tx.abort();

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