Hi,
I just updated from 0.9.5 to 0.9.7. I use the binary distribution. I
use the singleVM approach.
I use Tomcat 4.0.10 and postgreSQL.
I use the standard 0.9.7 ojb.properties file
I changed the version in the repository.xml to 0.9.6 (looked in the
mailing list archive)
Something goes wrong right when I request a persistence broker, that
makes the configurableFactory burp on a null pointer
Did someone notice similar behaviour. Does somebody know what is
happening.
BTW: OJB is the first persistence layer I have used, and I really like
it very much. Compliments to everybody!
Here is the code:
public Iterator getUsers() {
logger.setLevel(Level.DEBUG);
PersistenceBroker broker = null;
try {
List users = null;
logger.debug("no search required");
broker =
PersistenceBrokerFactory.defaultPersistenceBroker();
logger.debug("broker acquired");
Query query = new QueryByCriteria(User.class, null);
logger.debug("query created");
users = new ArrayList(broker.getCollectionByQuery(query));
logger.debug("arraylist obtained");
return users.iterator();
} catch (PBFactoryException ex) {
logger.fatal("Could not get a PersistenceBroker ", ex);
} catch (PersistenceBrokerException ex) {
// if something went wrong: rollback
logger.error("Could not get Users", ex);
} finally {
// return broker to pool
if (broker != null) {
broker.close();
}
}
// if we did not return yet, something went wrong with the
persistence broker!
// Since this method is called from the presentation layer, we
cannot show an appropriate error!
// so we just return an empty iterator.
return new ArrayList().iterator();
}
Here is the log file: Please note that "no search required" is the last
thing in the log...
Starting service Tomcat-Standalone
Apache Tomcat/4.0.4
Starting service Tomcat-Apache
Apache Tomcat/4.0.4
0 DEBUG [HttpProcessor[8080][4]] view.UserViewer - inside Init
11 DEBUG [HttpProcessor[8080][4]] view.UserViewer - session is set
932 DEBUG [HttpProcessor[8080][4]] view.UserViewer - no search
required
7251 DEBUG [HttpProcessor[8080][4]] ta.PersistenceBrokerFactoryFactory
- Instantiate PersistenceBrokerFactory
7621 DEBUG [HttpProcessor[8080][4]]
ta.PersistenceBrokerFactoryDefaultImpl - PersistenceBroker pool will be
setup with
the following configuration
# Trace object of class
org.apache.commons.pool.impl.GenericKeyedObjectPool$Config:
# maxIdle -1
# maxActive 100
# maxWait 2000
# whenExhaustedAction 0
# testOnBorrow false
# testOnReturn false
# testWhileIdle false
# timeBetweenEvictionRunsMillis -1
# numTestsPerEvictionRun 3
# minEvictableIdleTimeMillis 1000000
8012 DEBUG [HttpProcessor[8080][4]] ta.PersistenceBrokerFactoryFactory
- PersistencebrokerFactory class: org.apache.ojb
.broker.ta.PersistenceBrokerFactoryDefaultImpl
8082 DEBUG [HttpProcessor[8080][4]]
ta.PersistenceBrokerFactoryDefaultImpl - createPersistenceBroker(key)
called
8112 DEBUG [HttpProcessor[8080][4]]
ta.PersistenceBrokerFactoryDefaultImpl - Create new PB instance
8112 INFO [HttpProcessor[8080][4]]
ta.PersistenceBrokerFactoryDefaultImpl - Already created persistence
broker instanc
es: 0
8242 INFO [HttpProcessor[8080][4]] ConfigurableFactory -
ConfigurableFactory called to serve a null instance
8473 FATAL [HttpProcessor[8080][4]] view.UserViewer - Could not get a
PersistenceBroker
java.lang.reflect.InvocationTargetException:
java.lang.NullPointerException
...... etc.
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