I am using JDO API 3 with google app engine 1.9.15.
using javax.jdo.PersistenceManager, javax.jdo.Query, javax.jdo.Transaction for queries.
SO basically i am doing relational mapping in my JDO entity. My JDO entity is like
@PersistenceCapable
public class MyEntity {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Long id;
@Persistent
private String name;
@Persistent
private Boolean isCheck;
@Persistent(mappedBy = "myEntity",defaultFetchGroup="true")
@Element(dependent="true")
private Set<MyObject> myObject;
//Getters and setters of attributes
}
I get my entities with below query:
//pm is object of persistence manager
Query query = pm.newQuery(MyEntity.class);
//Object array is null because i want all the entities
Object value[] = new Object[0];
//Error occurred here while excutting for first time in new session
List result = (List) query.executeWithArray(value);
return result;
So when i tried to get my entity by Id it will give exception message like
com.utility.ErrorHandler errorHandler: Exception message : Identifier isCheck is unresolved (not a static field)
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com.utility.ErrorHandler errorHandler: Error in class DataAccessLayer
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com.utility.ErrorHandler errorHandler:
org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:519)
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com.utility.ErrorHandler errorHandler:
org.datanucleus.api.jdo.JDOQuery.executeWithArray(JDOQuery.java:321)
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com.utility.ErrorHandler errorHandler:
com.datastore.DataAccessLayer.searchObjects(DataAccessLayer.java:213)
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com.utility.ErrorHandler errorHandler:
com.businessaccesslayer.Manager.getIsCheckAppPolicies(Manager.java:216)
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com.utility.ErrorHandler errorHandler:
com.login.user.ViolationManager.checkViolationPolicyOnLogin(ViolationManager.java:86)
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com.utility.ErrorHandler errorHandler:
com.login.user.ViolationManager.checkViolationPolicyOnUser(ViolationManager.java:46)
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com.utility.ErrorHandler errorHandler:
com.samlapp.user.AuthenticateUser.doPost(AuthenticateUser.java:73)
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com.utility.ErrorHandler errorHandler:
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
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com.utility.ErrorHandler errorHandler:
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
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Stack trace while getting list of object
com.utility.ErrorHandler errorHandler: Exception message : Found Meta-Data for class com.MyEntity but this class is not enhanced!! Please enhance the class before running DataNucleus.
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com.utility.ErrorHandler errorHandler: Error in class DataAccessLayer
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com.utility.ErrorHandler errorHandler:
org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:519)
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com.utility.ErrorHandler errorHandler:
org.datanucleus.api.jdo.JDOQuery.executeWithArray(JDOQuery.java:321)
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com.utility.ErrorHandler errorHandler:
com.datastore.DataAccessLayer.searchObjects(DataAccessLayer.java:213)
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com.utility.ErrorHandler errorHandler:
com.businessaccesslayer.Manager.getAllAppPolicies(Manager.java:177)
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com.utility.ErrorHandler errorHandler:
com.controls.admin.GetAppPolicyList.doGet(GetAppPolicyList.java:70)
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com.utility.ErrorHandler errorHandler:
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
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com.utility.ErrorHandler errorHandler:
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
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com.utility.ErrorHandler errorHandler:
com.featurebase.admin.FeatureStatusFilter.doFilter(FeatureStatusFilter.java:136)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
com.filter.MultiAdminFilter.doFilter(MultiAdminFilter.java:400)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
org.owasp.csrfguard.CsrfGuardFilter.doFilter(CsrfGuardFilter.java:88)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
com.filter.ErrorHandlerFilter.doFilter(ErrorHandlerFilter.java:41)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
com.filter.ClickjackFilter.doFilter(ClickjackFilter.java:26)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
com.filter.XSSFilter.doFilter(XSSFilter.java:56)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:125)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:37)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter(JdbcMySqlConnectionCleanupFilter.java:60)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:260)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.Server.handle(Server.java:326)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:78)
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com.utility.ErrorHandler errorHandler:
org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:147)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:457)
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com.utility.ErrorHandler errorHandler:
com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:437)
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com.utility.ErrorHandler errorHandler:
com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:444)
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com.utility.ErrorHandler errorHandler:
com.google.tracing.CurrentContext.runInContext(CurrentContext.java:230)
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com.utility.ErrorHandler errorHandler:
com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:308)
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com.utility.ErrorHandler errorHandler:
com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:300)
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com.utility.ErrorHandler errorHandler:
com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:441)
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com.utility.ErrorHandler errorHandler:
com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:235)
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com.utility.ErrorHandler errorHandler:
java.lang.Thread.run(Thread.java:745)
But this exceptions is inconsistent.
Also My classes are enhance already still when I tried to access list of object first time from new session it gives following Exception :
Exception message : Found Meta-Data for class com.MyEntity but this class is not enhanced!! Please enhance the class before running DataNucleus.
So once i refresh page it will return results.I am facing this issue since last 7-8 months please help me with this.
There are lots of question about this on SO without answer.I report this issue on google support Google issue link also add as issue on Github