Hi PW,
I'd suggest that we add you to the latest Data Services beta because either we have fixed this issue, or we will fix this issue in the next release. Can you contact me off-list and I'll add you to the beat so you can test DS with the latest DS and hibernate assembler. Thanks Eric Flex PM ________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of parkerwhirlow Sent: Friday, February 16, 2007 7:06 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: FDS/Hibernate - LazyInitializationException when writing AMF output This is happening from FDS... flex.data.assemblers.HibernateAssembler uses a function called fetchObjectProperties() that's supposed to load them all while the session is open right? I've seen in other posts that FDS eager fetches the properties in the Assembler, so that they are available during serialization... am I missing something here? thanks, PW --- In flexcoders@yahoogroups.com <mailto:flexcoders%40yahoogroups.com> , Dima Gutzeit <[EMAIL PROTECTED]> wrote: > > Hi, > > You have to initialize the collections before AMF serializes them. The > problem occurs since you closing Hibernate session without first > initializing the arrays, and since you are using lazy initialization the > problem arise. > > You have two options : > > 1. Use lazy=false > 2. Better one, is calling /Hibernate.initialize(your_array_reference);/ > before you close the Hibernate session. > > Regards, > Dima Gutzeit. > > parkerwhirlow wrote: > > > > Hi again =) > > > > I've just started getting this exception inconsistently... sometimes > > it happens 3 times in a row, other times I can go all afternoon > > without getting it. Once the exception occurs, it will occur every > > time the client loads until FDS is restarted. > > > > Note this occurs on multiple collections. I tried setting the > > "offending" collection to lazy=false (in Hibernate), and the exception > > occurred on a different collection. I can't set every one of my > > collections to lazy=false. Especially since at this point, they HAVE > > to be lazy for the updateItem via hierarchical values to almost work. > > > > I also noticed that the collection does not necessarily need to have > > any items in it. (And possibly is caused specifically by NOT having > > any items in it, I can't tell for sure). The collection referenced in > > the exception below has no values, and there's another collection in > > that same class with values that doesn't seem to cause the exception. > > > > See below the hibernate mapping, and exception output when this > > occurs. (Note there are no FDS managed associations for this collection) > > > > Thanks for any insight you have as to what is causing this. > > > > PW > > _________________________ > > > > <joined-subclass name="Adult" table="T_ADULT" extends="Person"> > > <key> > > <column name="ID" length="22" /> > > </key> > > <set name="children" > > inverse="false" > > cascade="all-delete-orphan" > > > <key> > > <column name="PARENTID" length="22" not-null="false" /> > > </key> > > <one-to-many class="Person" /> > > </set> > > ... > > </joined-subclass> > > > > 10:19:42,093 WARN ProxyWarnLog - Narrowing proxy to class > > config.test.Adult - this operation breaks == > > 10:19:44,687 ERROR LazyInitializationException - failed to lazily > > initialize a collection of role: config.test.Adult.children, no > > session or session was closed > > org.hibernate.LazyInitializationException: failed to lazily initialize > > a collection of role: config.test.Adult.children, no session or > > session was closed > > at > > org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializ ationException(AbstractPersistentCollection.java:358) > > at > > org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializ ationExceptionIfNotConnected(AbstractPersistentCollection.j > > ava:350) > > at > > org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractP ersistentCollection.java:97) > > at > > org.hibernate.collection.PersistentSet.size(PersistentSet.java:139) > > at java.util.ArrayList.<init>(ArrayList.java:133) > > at > > flex.messaging.io.ArrayCollection.<init>(ArrayCollection.java:44) > > at > > flex.messaging.io.amf.Amf3Output.writeArrayCollection(Amf3Output.java:40 7) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:147) > > at > > flex.messaging.io.amf.Amf3Output.writeObjectProperty(Amf3Output.java:215 ) > > at > > flex.messaging.io.amf.Amf3Output.writePropertyProxy(Amf3Output.java:495) > > at > > flex.messaging.io.amf.Amf3Output.writeCustomObject(Amf3Output.java:467) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:165) > > at > > flex.messaging.io.amf.Amf3Output.writeObjectArray(Amf3Output.java:730) > > at > > flex.messaging.io.amf.Amf3Output.writeAMFArray(Amf3Output.java:386) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:151) > > at > > flex.messaging.io.ArrayCollection.writeExternal(ArrayCollection.java:97) > > at > > flex.messaging.io.amf.Amf3Output.writePropertyProxy(Amf3Output.java:485) > > at > > flex.messaging.io.amf.Amf3Output.writeArrayCollection(Amf3Output.java:41 4) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:147) > > at > > flex.messaging.io.amf.Amf3Output.writeObjectProperty(Amf3Output.java:215 ) > > at > > flex.messaging.io.amf.Amf3Output.writePropertyProxy(Amf3Output.java:495) > > at > > flex.messaging.io.amf.Amf3Output.writeCustomObject(Amf3Output.java:467) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:165) > > at > > flex.messaging.io.amf.Amf3Output.writeObjectArray(Amf3Output.java:730) > > at > > flex.messaging.io.amf.Amf3Output.writeAMFArray(Amf3Output.java:386) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:151) > > at > > flex.messaging.io.ArrayCollection.writeExternal(ArrayCollection.java:97) > > at > > flex.messaging.io.amf.Amf3Output.writePropertyProxy(Amf3Output.java:485) > > at > > flex.messaging.io.amf.Amf3Output.writeArrayCollection(Amf3Output.java:41 4) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:147) > > at > > flex.messaging.io.amf.Amf3Output.writeObjectProperty(Amf3Output.java:215 ) > > at > > flex.messaging.io.amf.Amf3Output.writePropertyProxy(Amf3Output.java:495) > > at > > flex.messaging.io.amf.Amf3Output.writeCustomObject(Amf3Output.java:467) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:165) > > at > > flex.messaging.io.amf.Amf3Output.writeObjectArray(Amf3Output.java:730) > > at > > flex.messaging.io.amf.Amf3Output.writeAMFArray(Amf3Output.java:386) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:151) > > at > > flex.messaging.io.amf.Amf3Output.writeObjectProperty(Amf3Output.java:215 ) > > at > > flex.messaging.io.amf.Amf3Output.writePropertyProxy(Amf3Output.java:495) > > at > > flex.messaging.io.amf.Amf3Output.writeCustomObject(Amf3Output.java:467) > > at > > flex.messaging.io.amf.Amf3Output.writeObject(Amf3Output.java:165) > > at > > flex.messaging.io.amf.Amf0Output.writeObject(Amf0Output.java:157) > > at > > flex.messaging.io.amf.AmfMessageSerializer.writeBody(AmfMessageSerialize r.java:185) > > at > > flex.messaging.io.amf.AmfMessageSerializer.writeMessage(AmfMessageSerial izer.java:139) > > at > > flex.messaging.endpoints.amf.SerializationFilter.invoke(SerializationFil ter.java:164) > > at > > flex.messaging.endpoints.AMFEndpoint.service(AMFEndpoint.java:164) > > at > > flex.messaging.MessageBrokerServlet.service(MessageBrokerServlet.java:34 0) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) > > at jrun.servlet.FilterChain.doFilter(FilterChain.java:86) > > at > > jrun.servlet.security.StandardSecurityFilter.doFilter(StandardSecurityFi lter.java:103) > > at jrun.servlet.FilterChain.doFilter(FilterChain.java:94) > > at jrun.servlet.FilterChain.service(FilterChain.java:101) > > at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91) > > at > > jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42) > > at > > jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:259 ) > > at > > jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:541 ) > > at > > jrun.servlet.http.WebService.invokeRunnable(WebService.java:172) > > at > > jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java :428) > > at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66) > > > > >
