Bug 313023

Comment 1 Tom Ware 2010-05-17 08:38:00 EDT

Please provide a recreation, or, at a minimum the relevant parts of your mappings.

Comment 2 Petar Bankovic 2010-05-17 09:07:12 EDT

@Entity
@Table(name="Artikal")
public class Artikal implements Serializable, PzEntity {
	private static final long serialVersionUID = 1L;

        @Id
	@Column(unique=true, nullable=false, length=255)
	private String sfrProizvod;

	@Column(nullable=false, length=255)
	private String barKod;

	@Column(nullable=false, length=255)
	private String bliziOpis;
	
	private double cenaBazna;

	private double cenaPlanska;

	private double cenaPoeni;

	private double duzina;

	private double fi;

	@Column(nullable=false, length=255)
	private String jedMere;

	@Column(length=30)
	private String katBroj;

	@Column(nullable=false, length=255)
	private String naziv;

	@Column(nullable=false, length=255)
	private String opis;

	@Column(nullable=false, length=255)
	private String dobSifra;

	@Column(nullable=false)
	private double procKala;

	@Column(nullable=false, length=255)
	private String prSifra;
	

	private double sirina;

	@Column(nullable=false)
	private double standPak;

	@Column(nullable=false)
	private double stokMax;

	@Column(nullable=false)
	private double stokMin;

	@Column(nullable=false)
	private double tezina;

	@Column(nullable=false, length=255)
	private String tip;

	private double visina;

        

        setters & getters
        ...
        ...
}

JPQL query used:
SELECT a FROM Artikal a

Double fields are making problems. If there is any double field which has null value in the database table, you will get the above exception during the query execution.

I'm using MySql database with the latest jdbc driver provided on their website (if it means anything)

Issue was detected after switching from version 1.1.2 to version 2.0.2

I suspect that the persistence api is trying to assign integer value of 0 instead of double value of 0 to the class field when null value is detected in the database.

Comment 3 Petar Bankovic 2010-05-20 06:20:30 EDT

can someone confirm this is a bug ?

Comment 4 Tom Ware 2010-05-28 15:07:29 EDT

The appears to be a bug in our weaving code.

You many be able to workaround by using the persistence unit property: eclipselink.weaving.internal=false

Comment 5 Christos Farinis 2010-07-07 06:00:36 EDT

I have similar ClassCast exceptions on Double and Float fields when using eclipselink weaving and lazy loading.It seems that eclipselink thinks they are Integer.

I am using the latest eclipselink 2.1.x library

----------------------------------------------------------------------------


Here is typical stack trace:

java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Double
	at gr.auth.itc.euro.rdbms.EuClassStudent._persistence_set(EuClassStudent.java)
	at org.eclipse.persistence.internal.descriptors.PersistenceObjectAttributeAccessor.setAttributeValueInObject(PersistenceObjectAttributeAccessor.java:46)
	at org.eclipse.persistence.mappings.DatabaseMapping.setAttributeValueInObject(DatabaseMapping.java:1393)
	at org.eclipse.persistence.mappings.DatabaseMapping.readFromRowIntoObject(DatabaseMapping.java:1284)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildAttributesIntoObject(ObjectBuilder.java:341)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:710)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:503)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectsInto(ObjectBuilder.java:903)
	at org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:423)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:1074)
	at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:736)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1034)
	at org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:380)
	at org.eclipse.persistence.internal.sessions.AbstractSession.internalExecuteQuery(AbstractSession.java:2392)
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1291)
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1273)
	at org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:85)
	at org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:75)
	at org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83)
	at org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:160)
	at org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:220)
	at org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83)
	at org.eclipse.persistence.indirection.IndirectSet.buildDelegate(IndirectSet.java:192)
	at org.eclipse.persistence.indirection.IndirectSet.getDelegate(IndirectSet.java:343)
	at org.eclipse.persistence.indirection.IndirectSet.size(IndirectSet.java:500)
	at gr.auth.itc.euro.cw.server.HandleGetStudentListForClass.execute(HandleGetStudentListForClass.java:39)
	at gr.auth.itc.euro.cw.server.ClassWebServiceImpl.execute(ClassWebServiceImpl.java:85)
	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:597)
	at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:562)
	at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:188)
	at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:224)
	at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1097)
	at gr.auth.itc.euro.server.EntityManagerFilter.doFilter(EntityManagerFilter.java:42)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
	at gr.auth.itc.euro.server.SecurityFilter.doFilter(SecurityFilter.java:82)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:324)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
	at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

Comment 6 Peter Rosell 2011-01-21 07:57:51 EST

I can confirm that this bug also exists in version 2.1.2. 
The suggested workaround with disabling weaving works, so the bug seems to be in the weaving method, _persistence_set.
In my case I had a property of type long (column in Postgresql is bigint) and got this exception:
java.lang.ClassCastException: java.lang.Integer cannot be cast to
java.lang.Long

When I set dummy values in the column I could enable weaving.

Comment 7 Markku Saarela 2011-10-26 11:57:34 EDT

This happens with null Short type also

Comment 8 James Sutherland 2011-12-06 08:20:05 EST

setting a null-value in the mapping (DescriptorCustomizer) would most likely also resolve the issue.  My guess is it is related to setting null into a primitive that cannot take null, using Double instead of double may also work.  Primitive should generally only be used on not-null columns as they cannot store null.

Comment 9 James Sutherland 2011-12-07 08:38:10 EST

Setting "eclipselink.weaving.internal"="false" should also resolve the issue.

Comment 10 Vikram Bhatia 2011-12-19 03:38:58 EST

It may be duplicate of Bug325916

Comment 11 Vikram Bhatia 2012-01-02 01:20:01 EST

Please test if the issue has already been fixed by using version 2.2.0 or beyond.

Comment 12 Vikram Bhatia 2012-01-31 04:57:59 EST

*** This bug has been marked as a duplicate of bug 325916 ***

Comment 13 Eclipse Webmaster 2022-06-09 10:23:31 EDT

The Eclipselink project has moved to Github: https://github.com/eclipse-ee4j/eclipselink