hie any updates on this please? yeah I did what you suggested by putting a log statement..
and what I get are two different values from this block At first time of app startup vik.sakshum.sakshumweb.jsp.model.jdo.PMF <clinit>: Loading PMF in com.google.apphosting.runtime.security.userclassloa...@1f7cdc7 and in another flow vik.sakshum.sakshumweb.jsp.model.jdo.PMF <clinit>: Loading PMF in com.google.apphosting.runtime.security.userclassloa...@1e6f0ef So, it means it is trying to load it in two different class loaders. So, how should I fix it? Thankx and Regards Vik Founder www.sakshum.com www.sakshum.blogspot.com On Thu, Sep 3, 2009 at 9:01 PM, Vik <[email protected]> wrote: > Hie > Thankx for taking time... > > I just adding the static block u mentioned in point 1 just after the static > block i have (in the above mail) > > I am sorry I did not get your point 2. > Right now what I do is: every time a request goes to a particular servlet > depending upon application flow and i call > PersistentManager pm = PMF.get().getPersistenceManager(); > > and then do jdo stuff with GAE. > > So, i m not checking any kind of duplicate or anything. I was hoping the > PMF class getInstance which is implemented as a singleton pattern > takes care of all. > > Please guide.. my app right now sucks coz of this not intialized error for > PMF. > > > Thankx and Regards > > Vik > Founder > www.sakshum.com > www.sakshum.blogspot.com > > > On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts <[email protected]> wrote: > >> Thanks for the code. I have three suggestions (mostly from my previous >> post): >> 1) Are you maybe loading that singleton class in different classloaders? >> Try logging the classloader object reference that tries to create the >> PersistenceManagerFactory. You can add a static initializer ABOVE >> pmfInstance. >> >> static { >> logger.log(Level.SEVERE, "Loading PMF in " + >> PMF.class.getClassLoader()"); >> } >> >> 2) Patch the datanucleus plugin code that makes the check for duplicate >> PMF creations to log a stacktrace first thing every time it's called. Then >> you'll know for sure which code paths are causing this to happen. >> >> 3) Disable the check if you're sure you're only creating the PMF a small >> number of times. >> >> On Wed, Sep 2, 2009 at 2:45 AM, Vik <[email protected]> wrote: >> >>> Hie >>> here is the code I am using: >>> package vik.sakshum.sakshumweb.jsp.model.jdo; >>> >>> import javax.jdo.JDOHelper; >>> import javax.jdo.PersistenceManagerFactory; >>> >>> import org.compass.core.Compass; >>> import org.compass.core.config.CompassConfiguration; >>> import org.compass.core.config.CompassEnvironment; >>> import org.compass.gps.CompassGps; >>> import org.compass.gps.device.jdo.Jdo2GpsDevice; >>> import org.compass.gps.impl.SingleCompassGps; >>> >>> public final class PMF { >>> private static final PersistenceManagerFactory pmfInstance = >>> JDOHelper.getPersistenceManagerFactory("transactions-optional"); >>> >>> private static final Compass compass; >>> private static final CompassGps compassGps; >>> >>> static { >>> compass = new CompassConfiguration().setConnection("gae://index") >>> .setSetting(CompassEnvironment.ExecutorManager.EXECUTOR_MANAGER_TYPE, >>> "disabled") >>> .addScan("vik.sakshum.sakshumweb.jsp.model.jdo") >>> .buildCompass(); >>> >>> compassGps = new SingleCompassGps(compass); >>> compassGps.addGpsDevice(new Jdo2GpsDevice("appenine", >>> pmfInstance)); >>> compassGps.start(); >>> >>> compassGps.index(); >>> >>> } >>> >>> private PMF() {} >>> >>> public static PersistenceManagerFactory get() { >>> return pmfInstance; >>> } >>> >>> public static Compass getCompass(){ >>> return compass; >>> } >>> } >>> >>> any clues? >>> >>> Thankx and Regards >>> >>> Vik >>> Founder >>> www.sakshum.com >>> www.sakshum.blogspot.com >>> >>> >>> On Wed, Sep 2, 2009 at 12:34 AM, Toby Reyelts <[email protected]> wrote: >>> >>>> Vik, >>>> >>>> Do you have some sample code to reproduce this? By default, we throw an >>>> exception if you try to create more than one PersistenceManagerFactory. Are >>>> you using a singleton class to prevent more than one from being created? If >>>> so, are you maybe loading that singleton class in different classloaders? >>>> (Try logging the classloader object reference that tries to create the >>>> PersistenceManagerFactory). >>>> >>>> Lastly, you can disable the exception if you want (details should be in >>>> the exception message), but it will be a performance problem for you if >>>> you're creating more than a few PersistenceManagerFactory's. >>>> >>>> >>>> On Tue, Sep 1, 2009 at 1:51 PM, Vik <[email protected]> wrote: >>>> >>>>> anyone any updates on this please? >>>>> Thankx and Regards >>>>> >>>>> Vik >>>>> Founder >>>>> www.sakshum.com >>>>> www.sakshum.blogspot.com >>>>> >>>>> >>>>> On Sun, Aug 30, 2009 at 8:51 PM, Vik <[email protected]> wrote: >>>>> >>>>>> Hie >>>>>> Any one using compass on his GAE app? >>>>>> >>>>>> I am frequently getting error cannot initialize PMF where there is >>>>>> static code to initialize compass apis. >>>>>> Any idea how to resolve? >>>>>> >>>>>> Thankx and Regards >>>>>> >>>>>> Vik >>>>>> Founder >>>>>> www.sakshum.com >>>>>> www.sakshum.blogspot.com >>>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> >> >> >> >> > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. 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