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AnieshU.K
 Post subject: Error occurs when bean with setter of float datatype is used
PostPosted: Wed Oct 05, 2005 8:08 am 
Newbie

Joined: Wed Oct 05, 2005 7:54 am
Posts: 8
Need help with Hibernate? Read this first:
http://www.hibernate.org/ForumMailingli ... AskForHelp

Hibernate version:3.0

Mapping documents:

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:

Name and version of the database you are using:oracle9i

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:

org.springframework.orm.hibernate3.HibernateSystemException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of bus.LH_M_EBooking.Booking.setPi_pkgs; nested exception is org.hibernate.PropertyAccessException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of bus.LH_M_EBooking.Booking.setPi_pkgs
org.hibernate.PropertyAccessException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of bus.LH_M_EBooking.Booking.setPi_pkgs
at org.hibernate.tuple.PojoTuplizer.setPropertyValuesWithOptimizer(PojoTuplizer.java:203)
at org.hibernate.tuple.PojoTuplizer.setPropertyValues(PojoTuplizer.java:173)
at org.hibernate.persister.entity.BasicEntityPersister.setPropertyValues(BasicEntityPersister.java:2919)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:113)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:530)
at org.hibernate.loader.Loader.doQuery(Loader.java:436)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:218)
at org.hibernate.loader.Loader.doList(Loader.java:1593)
at org.hibernate.loader.Loader.list(Loader.java:1577)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:395)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:271)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:844)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:74)
at org.springframework.orm.hibernate3.HibernateTemplate$29.doInHibernate(HibernateTemplate.java:749)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:311)
at org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:740)
at org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:732)
at db.LH_M_EBooking.EBookingHibernate.getQuerylist(EBookingHibernate.java:17)
at bus.LH_M_EBooking.Bookingmanager.Query(Bookingmanager.java:55)
at web.Exportbookingcontroller.HQuery(Exportbookingcontroller.java:363)
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:324)
at uk.ltd.getahead.dwr.impl.ExecuteQuery.execute(ExecuteQuery.java:381)
at uk.ltd.getahead.dwr.impl.DefaultProcessor.doExec(DefaultProcessor.java:539)
at uk.ltd.getahead.dwr.impl.DefaultProcessor.handle(DefaultProcessor.java:87)
at uk.ltd.getahead.dwr.DWRServlet.doPost(DWRServlet.java:174)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:534)
Caused by: net.sf.cglib.beans.BulkBeanException
at bus.LH_M_EBooking.Booking$$BulkBeanByCGLIB$$b986e45a.setPropertyValues(<generated>)
at org.hibernate.tuple.PojoTuplizer.setPropertyValuesWithOptimizer(PojoTuplizer.java:200)
... 53 more
Caused by: java.lang.NullPointerException
... 55 more


Hai Every one this is the error i get if i include a datatype of float what may be the cause.

Can anyone help me

Thanks
Aniesh U.K
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pksiv
 Post subject: Re: Error occurs when bean with setter of float datatype is
PostPosted: Wed Oct 05, 2005 8:24 am 
Expert
Expert

Joined: Mon Feb 14, 2005 12:32 pm
Posts: 609
Location: Atlanta, GA - USA
If you are using Primitives as attributes, and the database contains a NULL value, Hibernate won't know how to handle this since a Primitive can't represent a NULL value.

The BasicPropertyAccessor uses the following code to set property values
Code:
public void set(Object target, Object value, SessionFactoryImplementor factory) throws HibernateException {
         try {
            method.invoke( target, new Object[] { value } );
         }
         catch (NullPointerException npe) {
            if ( value==null && method.getParameterTypes()[0].isPrimitive() ) {
               throw new PropertyAccessException(npe, "Null value was assigned to a property of primitive type", true, clazz, propertyName);
            }
            else {
               throw new PropertyAccessException(npe, "NullPointerException occurred while calling", true, clazz, propertyName);
            }
         }
...
...


You should either use Wrapper classes or create a custom PropertyAccessor to define your default behavior.

If you want NULL database values to default to say 0.0, you can add logic inside the try {} to check for this condition.
Code:
    if (value == null) {
        return; // do nothing (alternatively, set to some default value)
    } else {
        method.invoke( target, new Object[] { value } ); //This is only line in BasicPropertyAccessor.BasicSetter
    }   

_________________
Preston

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AnieshU.K
 Post subject:
PostPosted: Wed Oct 05, 2005 8:55 am 
Newbie

Joined: Wed Oct 05, 2005 7:54 am
Posts: 8
Hai

Very thanks for u r reply.I am a newbie.I am using spring and hibernate.I really can't go with u.Can u say me in detail or with some little clue.Help pls


Thanks
Have a nice day
Aniesh U.K
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jamie_dainton
 Post subject:
PostPosted: Wed Oct 05, 2005 8:56 am 
Senior
Senior

Joined: Thu Aug 04, 2005 4:54 am
Posts: 153
Location: Birmingham, UK
Simple terms.

If possible use Float instead of float.

Otherwise you'll have to use the methods outlined above.
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AnieshU.K
 Post subject:
PostPosted: Wed Oct 05, 2005 11:52 pm 
Newbie

Joined: Wed Oct 05, 2005 7:54 am
Posts: 8
Hai all ,

Thanks for u r kind reply.I used Float instead of float it worked fine.What about int datatype.Should i use any conventions.

Help needed urgently.


Thanks(Have a nice day)
Aniesh U.K
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AnieshU.K
 Post subject:
PostPosted: Thu Oct 06, 2005 12:05 am 
Newbie

Joined: Wed Oct 05, 2005 7:54 am
Posts: 8
Hai all

I found the answer Hope i need to use Integer instead of int.

Is this right.


Thanks
Aniesh U.K
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