Examples of org.odmg.Database.deletePersistent()

org.odmg.Database.deletePersistent()
Deletes an object from the database. It must be executed in the context of an open transaction. If the object is not persistent, then ObjectNotPersistent is thrown. If the transaction in which this method is executed commits, then the object is removed from the database. If the transaction aborts, then the deletePersistent operation is considered not to have been executed, and the target object is again in the database. @param object The object to delete.


        tx.begin();


        Database db = impl.getDatabase(product);


        db.deletePersistent(product);


        tx.commit();
    }


    /**

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            fail("Stored object not found");
        }
        tx.commit();


        tx.begin();
        db.deletePersistent(site);
        tx.commit();


        query = odmg.newOQLQuery();
        query.create("select sites from " + Site.class.getName() + " where name=$1");
        query.bind(name);

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            List   result      = (List)query.execute();
            Product toBeDeleted = (Product)result.get(0);


            // 4. now mark object for deletion
            db.deletePersistent(toBeDeleted);
            // 5. commit transaction
            tx.commit();
        }
        catch (Throwable t)
        {

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        tx.begin();


        Database db = impl.getDatabase(product);


        db.deletePersistent(product);


        tx.commit();
    }


    /**

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            List   result      = (List)query.execute();
            Product toBeDeleted = (Product)result.get(0);


            // 4. now mark object for deletion
            db.deletePersistent(toBeDeleted);
            // 5. commit transaction
            tx.commit();
        }
        catch (Throwable t)
        {

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            fail("Stored object not found");
        }
        tx.commit();


        tx.begin();
        db.deletePersistent(site);
        tx.commit();


        query = odmg.newOQLQuery();
        query.create("select sites from " + Site.class.getName() + " where name=$1");
        query.bind(name);

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            tx.begin();
            tx.lock(art2, Transaction.WRITE);
            tx.commit();


            tx.begin();
            db.deletePersistent(art2);
            tx.commit();
            db.close();
//        log.info("End init performance test");
        }
    }

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            db.open(databaseName, Database.OPEN_READ_WRITE);
            for (int i = 0; i < arr.length; i++)
            {
                Transaction tx = ojb.newTransaction();
                tx.begin();
                db.deletePersistent(arr[i]);
                tx.commit();
            }
            db.close();
            long stop = System.currentTimeMillis();
            times[3] = times[3] + (stop - start);

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            db.open(databaseNameFarAway, Database.OPEN_READ_WRITE);
            for (int i = 0; i < arr.length; i++)
            {
                Transaction tx = ojb.newTransaction();
                tx.begin();
                db.deletePersistent(arrFarAway[i]);
                tx.commit();
            }
            db.close();
            long stop = System.currentTimeMillis();
            times[3] = times[3] + (stop - start);

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        Transaction tx = odmg.newTransaction();
        long start = System.currentTimeMillis();
        tx.begin();
        for (int i = 0; i < articleCount; i++)
        {
            db.deletePersistent(arr[i]);
        }
        tx.commit();
        long stop = System.currentTimeMillis();
        db.close();
        logger.info("deleting " + articleCount + " Objects: " + (stop - start) + " msec");

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