Mark transient in declaration - transient StandardDaoManager standardDaoManager;
Kengkaj On Fri, Mar 20, 2009 at 6:13 PM, Leffingwell, Jonathan R CTR FRCSE, JAX 7.2.2 <jonathan.leffingwell....@navy.mil> wrote: > What does that mean, "set reference to it transient"? > > > -----Original Message----- > From: Nicholoz Koka Kiknadze [mailto:kikna...@gmail.com] > Sent: Thursday, March 19, 2009 3:30 PM > To: user-java@ibatis.apache.org > Subject: Re: "Cannot serialize session attribute ..." > > My first thought is that maybe StandardDaoManager can not be serializable > as > it deals with database connections. Maybe makes sense to set reference to > it > transient? > > > > > > > > On Thu, Mar 19, 2009 at 2:55 PM, Leffingwell, Jonathan R CTR FRCSE, JAX > 7.2.2 <jonathan.leffingwell....@navy.mil> wrote: > > > I am running a web app in IBM RAD 7 with a Tomcat 5.5.26 server, > with > clustering (two Tomcat instances). When shutting down the Tomcat > server(s), > I get the following warning: > > Mar 19, 2009 2:52:43 PM org.apache.catalina.session.StandardSession > writeObject > WARNING: Cannot serialize session attribute createXXXManager for > session > 8B1876E5C5C54B242E4256674843600B > java.io.NotSerializableException: > com.ibatis.dao.engine.impl.StandardDaoManager > at > > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081) > at > > java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375) > at > > java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347) > at > > > java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290) > at > > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079) > at > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302) > at > > > org.apache.catalina.session.StandardSession.writeObject(StandardSession.java > :1478) > at > > > org.apache.catalina.session.StandardSession.writeObjectData(StandardSession. > java:948) > at > > > org.apache.catalina.session.StandardManager.doUnload(StandardManager.java:51 > 7) > at > > > org.apache.catalina.session.StandardManager.unload(StandardManager.java:463) > at > > org.apache.catalina.session.StandardManager.stop(StandardManager.java:667) > at > > org.apache.catalina.core.StandardContext.stop(StandardContext.java:4360) > at > org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:1067) > at > org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:1067) > at > > org.apache.catalina.core.StandardEngine.stop(StandardEngine.java:448) > at > > org.apache.catalina.core.StandardService.stop(StandardService.java:510) > at > > org.apache.catalina.core.StandardServer.stop(StandardServer.java:734) > at > org.apache.catalina.startup.Catalina.stop(Catalina.java:602) > at > org.apache.catalina.startup.Catalina.start(Catalina.java:577) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native > Method) > at > > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 > ) > at > > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl > .java:25) > at java.lang.reflect.Method.invoke(Method.java:585) > at > org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) > at > org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433) > > > All of my managers, including createXXXManager, inherit from a > serializable > class BaseManager, but if I'm reading this correctly, it looks like > the > iBatis class StandardDaoManager is not serializable. I can't edit > that > class, of course. > > Here's what I want to know: > > 1. If I put the following code in my context.xml file, will it > prevent > clustering from working properly? > > <Manager className="org.apache.catalina.session.PersistentManager" > saveOnRestart="false" /> > > > 2. If the aforementioned context.xml snippet keeps clustering from > working, > what options do I have to stop the warnings but keep clustering > working > properly? > > > Thanks for any insight! > > Jonathan > > > >
