Ok, thanks.
Jason (Google) wrote: > The getObjectsById function hasn't been optimized to perform a batch > get, so you're just as well-off issuing multiple calls to getObjectById. > If you need to issue a batch get, you'll need to use the low-level API. > > - Jason > > On Fri, Oct 16, 2009 at 12:21 AM, Rusty Wright <rwright.li...@gmail.com > <mailto:rwright.li...@gmail.com>> wrote: > > > Here's my code; the first call on the persistence manager, > getObjectsById (note plural Objects) fails. But then later down it > iterates over the Keys and that succeeds. The log output is below > the code. On the get of multiple objects it's blowing up on Key > User(10002)/DesiredDate(3006) but you can see in the log output that > it succeeds when it gets them one by one. > > public Collection<DesiredDate> getDesiredDates(final > Collection<String> desiredDateIds) { > final Set<Key> keys = new HashSet<Key>(); > > for (final String eachId : desiredDateIds) > keys.add(KeyFactory.stringToKey(eachId)); > > try { > @SuppressWarnings("unchecked") > final Collection<DesiredDate> result = > getPersistenceManager().getObjectsById(keys); > > return (result); > } > catch (final Exception e) { > this.log.error("desiredDate query failed", e); > } > > /* > * one or more of the keys is bogus; iterate and fetch > * individually. > */ > > final List<DesiredDate> desiredDates = new > ArrayList<DesiredDate>(); > > for (final Key eachKey : keys) { > this.log.debug("getting: " + eachKey); > > try { > final DesiredDate desiredDate = > getPersistenceManager().getObjectById(DesiredDate.class, eachKey); > > desiredDates.add(desiredDate); > } > catch (final Exception e) { > this.log.error("desiredDate query failed", e); > this.log.error("desiredDate not found: " + eachKey); > } > } > > return (desiredDates); > } > > > I 10-16 12:04AM 39.810 > [rusty-sandbox/4.337068117851573108].<stdout>: ERROR: 07:04:39,805: > > com.objecteffects.sample.impl.dao.jdo.DesiredDateDao.getDesiredDates(DesiredDateDao.java:55): > desiredDate query failed > javax.jdo.JDOObjectNotFoundException: No such object > FailedObject:User(10002)/DesiredDate(3006) > at > > org.datanucleus.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:323) > at > > org.datanucleus.jdo.JDOPersistenceManager.getObjectById(JDOPersistenceManager.java:1676) > at > > org.datanucleus.jdo.JDOPersistenceManager.getObjectsById(JDOPersistenceManager.java:1700) > at > > org.datanucleus.jdo.JDOPersistenceManager.getObjectsById(JDOPersistenceManager.java:1745) > at > > com.objecteffects.sample.impl.dao.jdo.DesiredDateDao.getDesiredDates(DesiredDateDao.java:50) > at > > com.objecteffects.sample.impl.service.DesiredDateService.deleteDesiredDatesById(DesiredDateService.java:116) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown > Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at > > com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_$3.run(Method_.java:164) > at java.security.AccessController.doPrivileged(Native Method) > at > > com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.privilegedInvoke(Method_.java:162) > at > > com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke_(Method_.java:131) > at > > com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke(Method_.java:40) > at > > org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) > at > > org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) > at > > org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) > at > > org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107) > at > > org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) > at > > org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) > at $Proxy12.deleteDesiredDatesById(Unknown Source) > at > > com.objecteffects.sample.web.action.ListActionBean.delete(ListActionBean.java:45) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown > Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at > > com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_$3.run(Method_.java:164) > at java.security.AccessController.doPrivileged(Native Method) > at > > com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.privilegedInvoke(Method_.java:162) > at > > com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke_(Method_.java:131) > at > > com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke(Method_.java:40) > at > > net.sourceforge.stripes.controller.DispatcherHelper$6.intercept(DispatcherHelper.java:442) > at > > net.sourceforge.stripes.controller.ExecutionContext.proceed(ExecutionContext.java:158) > at > > net.sourceforge.stripes.controller.BeforeAfterMethodInterceptor.intercept(BeforeAfterMethodInterceptor.java:113) > at > > net.sourceforge.stripes.controller.ExecutionContext.proceed(ExecutionContext.java:155) > at > > net.sourceforge.stripes.controller.ExecutionContext.wrap(ExecutionContext.java:74) > at > > net.sourceforge.stripes.controller.DispatcherHelper.invokeEventHandler(DispatcherHelper.java:440) > at > > net.sourceforge.stripes.controller.DispatcherServlet.invokeEventHandler(DispatcherServlet.java:278) > at > > net.sourceforge.stripes.controller.DispatcherServlet.service(DispatcherServlet.java:160) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) > at > > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) > at > > net.sourceforge.stripes.controller.StripesFilter.doFilter(StripesFilter.java:247) > at > > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35) > at > > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) > at > > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) > at > > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) > at > > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) > at > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) > at > > com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:238) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) > at org.mortbay.jetty.Server.handle(Server.java:313) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) > at > > org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) > at > > com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76) > at > org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > at > > com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:139) > at > > com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:239) > at > > com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:5135) > at > > com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:5133) > at > > com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:24) > at > com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:363) > at com.google.net.rpc.impl.Server$2.run(Server.java:814) > at > > com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:56) > at > > com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:516) > at com.google.net.rpc.impl.Server.startRpc(Server.java:769) > at com.google.net.rpc.impl.Server.processRequest(Server.java:351) > at > > com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:437) > at > > com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:319) > at > com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:290) > at > com.google.net.async.Connection.handleReadEvent(Connection.java:436) > at > > com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:762) > at > > com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:207) > at > com.google.net.async.EventDispatcher.loop(EventDispatcher.java:101) > at > com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:251) > at > > com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run(JavaRuntime.java:396) > at java.lang.Thread.run(Unknown Source) > > I 10-16 12:04AM 39.811 > [rusty-sandbox/4.337068117851573108].<stdout>: DEBUG: 07:04:39,810: > > com.objecteffects.sample.impl.dao.jdo.DesiredDateDao.getDesiredDates(DesiredDateDao.java:66): > getting: User(10002)/DesiredDate(3006) > > I 10-16 12:04AM 39.918 > [rusty-sandbox/4.337068117851573108].<stdout>: DEBUG: 07:04:39,917: > > com.objecteffects.sample.impl.dao.jdo.DesiredDateDao.getDesiredDates(DesiredDateDao.java:66): > getting: User(10002)/DesiredDate(3004) > > I 10-16 12:04AM 39.934 > [rusty-sandbox/4.337068117851573108].<stdout>: DEBUG: 07:04:39,933: > > com.objecteffects.sample.impl.dao.jdo.DesiredDateDao.getDesiredDates(DesiredDateDao.java:66): > getting: User(10002)/DesiredDate(3005) > > I 10-16 12:04AM 39.954 > [rusty-sandbox/4.337068117851573108].<stdout>: DEBUG: 07:04:39,953: > > com.objecteffects.sample.impl.dao.jdo.DesiredDateDao.getDesiredDates(DesiredDateDao.java:66): > getting: User(10002)/DesiredDate(4001) > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~----------~----~----~----~------~----~------~--~---
