Re: [appengine-java] Problem with persist a child class
My only thought is that you should clean your project and have datanucleus
rebuild the persistent classes entirely.
On Wed, Sep 29, 2010 at 2:34 PM, lisandrodc lisandr...@gmail.com wrote:
Hi andy! I have tried delete my local_db and the problem persist.
The exception is in the next code, in the call of the build method
RegFechaUsuario:
ControladorFecha cF = new ControladorFecha();
System.out.println(nombre +
nuevaFecha.getNombre());
System.out.println(fecha ini +
fechaOriginal.getFechaIni());
System.out.println(fecha fin +
fechaOriginal.getFechaFin());
System.out.println(idUsuario + idUsuario);
System.out.println(idFecha +
fechaOriginal.getId().getId());
System.out.println(partidos +
nuevaFecha.getPartidos());
/*Here print in console:
na fecha 4
us id 7
nombre f1
fecha ini Fri Jan 01 00:00:00 UTC 2010
fecha fin Fri Jan 01 00:00:00 UTC 2010
idUsuario 7
idFecha 4
partidos [model.part...@973678]*/
RegFechaUsuario regFechaUsuario = new
RegFechaUsuario(nuevaFecha.getNombre(),fechaOriginal.getFechaIni(),fechaOriginal.getFechaFin(),idUsuario,fechaOriginal.getId().getId(),nuevaFecha.getPartidos());
cF.crearRegFechaUsuario(regFechaUsuario);
.
The code of method:
public void crearRegFechaUsuario(RegFechaUsuario regFechaUsuario) {
Transaction tx = pm.currentTransaction();
try {
tx.begin();
//here is exception
pm.makePersistentAll(regFechaUsuario);
tx.commit();
} finally {
// pm.close();
if (tx.isActive()) {
tx.rollback();
}
}
}
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[appengine-java] Problem with persist a child class
Hi andy! I have tried delete my local_db and the problem persist.
The exception is in the next code, in the call of the build method
RegFechaUsuario:
ControladorFecha cF = new ControladorFecha();
System.out.println(nombre +
nuevaFecha.getNombre());
System.out.println(fecha ini +
fechaOriginal.getFechaIni());
System.out.println(fecha fin +
fechaOriginal.getFechaFin());
System.out.println(idUsuario + idUsuario);
System.out.println(idFecha +
fechaOriginal.getId().getId());
System.out.println(partidos +
nuevaFecha.getPartidos());
/*Here print in console:
na fecha 4
us id 7
nombre f1
fecha ini Fri Jan 01 00:00:00 UTC 2010
fecha fin Fri Jan 01 00:00:00 UTC 2010
idUsuario 7
idFecha 4
partidos [model.part...@973678]*/
RegFechaUsuario regFechaUsuario = new
RegFechaUsuario(nuevaFecha.getNombre(),fechaOriginal.getFechaIni(),fechaOriginal.getFechaFin(),idUsuario,fechaOriginal.getId().getId(),nuevaFecha.getPartidos());
cF.crearRegFechaUsuario(regFechaUsuario);
.
The code of method:
public void crearRegFechaUsuario(RegFechaUsuario regFechaUsuario) {
Transaction tx = pm.currentTransaction();
try {
tx.begin();
//here is exception
pm.makePersistentAll(regFechaUsuario);
tx.commit();
} finally {
// pm.close();
if (tx.isActive()) {
tx.rollback();
}
}
}
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Re: [appengine-java] Problem with persist a child class
I've managed to make class inheritance work for me using JDO.
The only difference I see between my annotations and yours is I'm using
@Inheritance(customStrategy = complete-table)
InheritanceStrategyhttp://www.datanucleus.org/javadocs/core/1.1/org/datanucleus/metadata/InheritanceStrategy.html
*COMPLETE_TABLEhttp://www.datanucleus.org/javadocs/core/1.1/org/datanucleus/metadata/InheritanceStrategy.html#COMPLETE_TABLE
*
Another idea is to trim your class members down to see exactly which one(s)
is producing the type conflict.
Lastly, I'm not sure that class inheritance is the problem at all...
Are you working with a totally empty datastore?
Did you change the type of a member from String to Long?
On Sun, Sep 19, 2010 at 7:22 AM, lisandrodc lisandr...@gmail.com wrote:
Hi! I have a problem with persist a child class.
The classes are:
The parent class:
@PersistenceCapable
@Inheritance(strategy = InheritanceStrategy.SUBCLASS_TABLE)
public abstract class Fecha {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key id;
@Persistent
private String nombre;
@Persistent
private Date fechaIni;
@Persistent
private Date fechaFin;
@Persistent(defaultFetchGroup = true)
ListPartido partidos;
The child class:
@PersistenceCapable
public class RegFechaUsuario extends Fecha {
@Persistent
private int puntos;
@Persistent
private Long idUsuarioFecha;
@Persistent
private Long idFechaOriginal;
And the code of run the exception is:
Transaction tx = pm.currentTransaction();
try {
tx.begin();
pm.makePersistentAll(regFechaUsuario);
//here is the exception
tx.commit();
And the regFechaUsuario is created with the build:
public RegFechaUsuario(String nombre, Date fechaIni, Date fechaFin,
Long idUsuarioFecha, Long idFechaOriginal,
ListPartidopartidos)
{
//super(nombre,fechaIni,fechaFin,partidos);
this.puntos = 0;
this.idUsuarioFecha = idUsuarioFecha;
this.idFechaOriginal = idFechaOriginal;
this.partidos=partidos;
}
The exception is:
Problem accessing /Prode/JugarFecha.action. Reason:
java.lang.Long cannot be cast to java.lang.String
Caused by:
java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.String
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.checkForParentSwitch(DatastoreRelationFieldManager.java:
202)
at org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.setObjectViaMapping(DatastoreRelationFieldManager.java:133)
at org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.apply(DatastoreRelationFieldManager.java:112)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.storeRelations(DatastoreRelationFieldManager.java:
81)
at
org.datanucleus.store.appengine.DatastoreFieldManager.storeRelations(DatastoreFieldManager.java:
955)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.storeRelations(DatastorePersistenceHandler.java:
546)
at org.datanucleus.store.appengine.DatastorePersistenceHandler.
Regards
Lisandro
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[appengine-java] Problem with persist a child class
Hi ! I have a problem when persist a chid class.
The parent class:
@PersistenceCapable
@Inheritance(strategy = InheritanceStrategy.SUBCLASS_TABLE)
public abstract class Fecha {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key id;
@Persistent
private String nombre;
@Persistent
private Date fechaIni;
@Persistent
private Date fechaFin;
@Persistent(defaultFetchGroup = true)
ListPartido partidos;
private Long id2;
private Long kind;
The child class:
@PersistenceCapable(identityType =
IdentityType.APPLICATION,detachable=true)
public class RegFechaUsuario extends Fecha {
@Persistent
private int puntos;
@Persistent
private Long idUsuarioFecha;
@Persistent
private Long idFechaOriginal;
The method at persist:
public void crearRegFechaUsuario(RegFechaUsuario
regFechaUsuario) {
//regFechaUsuario is an object initialized
Transaction tx = pm.currentTransaction();
try {
tx.begin();
pm.makePersistentAll(regFechaUsuario);
//here is the exception
tx.commit();
} finally {
// pm.close();
if (tx.isActive()) {
tx.rollback();
}
}
}
And the exception is (internal error of the library of google apps or
datanucleus), the cast:
Problem accessing /Prode/JugarFecha.action. Reason:
java.lang.Long cannot be cast to java.lang.String
Caused by:
java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.String
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.checkForParentSwitch(DatastoreRelationFieldManager.java:
202)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.setObjectViaMapping(DatastoreRelationFieldManager.java:133)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.apply(DatastoreRelationFieldManager.java:112)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.storeRelations(DatastoreRelationFieldManager.java:
81)
at
org.datanucleus.store.appengine.DatastoreFieldManager.storeRelations(DatastoreFieldManager.java:
955)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.storeRelations(DatastorePersistenceHandler.java:
546)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.insertPostProcess(DatastorePersistenceHandler.java:
304)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.insertObjects(DatastorePersistenceHandler.java:
256)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.insertObject(DatastorePersistenceHandler.java:
240)
at
org.datanucleus.state.JDOStateManagerImpl.internalMakePersistent(JDOStateManagerImpl.java:
3185)
at
org.datanucleus.state.JDOStateManagerImpl.makePersistent(JDOStateManagerImpl.java:
3161)
at
org.datanucleus.ObjectManagerImpl.persistObjectInternal(ObjectManagerImpl.java:
1298)
at
org.datanucleus.sco.SCOUtils.validateObjectForWriting(SCOUtils.java:
1476)
at
org.datanucleus.store.mapped.scostore.ElementContainerStore.validateElementForWriting(ElementContainerStore.java:
380)
at
org.datanucleus.store.mapped.scostore.FKListStore.validateElementForWriting(FKListStore.java:
609)
at
org.datanucleus.store.mapped.scostore.FKListStore.internalAdd(FKListStore.java:
344)
at
org.datanucleus.store.appengine.DatastoreFKListStore.internalAdd(DatastoreFKListStore.java:
146)
at
org.datanucleus.store.mapped.scostore.AbstractListStore.addAll(AbstractListStore.java:
128)
at
org.datanucleus.store.mapped.mapping.CollectionMapping.postInsert(CollectionMapping.java:
157)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.runPostInsertMappingCallbacks(DatastoreRelationFieldManager.java:
217)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.access
$200(DatastoreRelationFieldManager.java:48)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.apply(DatastoreRelationFieldManager.java:116)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.storeRelations(DatastoreRelationFieldManager.java:
81)
at
org.datanucleus.store.appengine.DatastoreFieldManager.storeRelations(DatastoreFieldManager.java:
955)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.storeRelations(DatastorePersistenceHandler.java:
546)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.insertPostProcess(DatastorePersistenceHandler.java:
304)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.insertObjects(DatastorePersistenceHandler.java:
256)
[appengine-java] Problem with persist a child class
Hi! I have a problem with persist a child class.
The classes are:
The parent class:
@PersistenceCapable
@Inheritance(strategy = InheritanceStrategy.SUBCLASS_TABLE)
public abstract class Fecha {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key id;
@Persistent
private String nombre;
@Persistent
private Date fechaIni;
@Persistent
private Date fechaFin;
@Persistent(defaultFetchGroup = true)
ListPartido partidos;
The child class:
@PersistenceCapable
public class RegFechaUsuario extends Fecha {
@Persistent
private int puntos;
@Persistent
private Long idUsuarioFecha;
@Persistent
private Long idFechaOriginal;
And the code of run the exception is:
Transaction tx = pm.currentTransaction();
try {
tx.begin();
pm.makePersistentAll(regFechaUsuario);
//here is the exception
tx.commit();
And the regFechaUsuario is created with the build:
public RegFechaUsuario(String nombre, Date fechaIni, Date fechaFin,
Long idUsuarioFecha, Long idFechaOriginal,
ListPartidopartidos)
{
//super(nombre,fechaIni,fechaFin,partidos);
this.puntos = 0;
this.idUsuarioFecha = idUsuarioFecha;
this.idFechaOriginal = idFechaOriginal;
this.partidos=partidos;
}
The exception is:
Problem accessing /Prode/JugarFecha.action. Reason:
java.lang.Long cannot be cast to java.lang.String
Caused by:
java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.String
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.checkForParentSwitch(DatastoreRelationFieldManager.java:
202)
at org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.setObjectViaMapping(DatastoreRelationFieldManager.java:133)
at org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.apply(DatastoreRelationFieldManager.java:112)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.storeRelations(DatastoreRelationFieldManager.java:
81)
at
org.datanucleus.store.appengine.DatastoreFieldManager.storeRelations(DatastoreFieldManager.java:
955)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.storeRelations(DatastorePersistenceHandler.java:
546)
at org.datanucleus.store.appengine.DatastorePersistenceHandler.
Regards
Lisandro
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Re: [appengine-java] Problem with persist a child class
java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.String
use Long.parseLong(String) to parse
Sent from my iPad
On Sep 19, 2010, at 7:52 PM, lisandrodc lisandr...@gmail.com wrote:
Hi! I have a problem with persist a child class.
The classes are:
The parent class:
@PersistenceCapable
@Inheritance(strategy = InheritanceStrategy.SUBCLASS_TABLE)
public abstract class Fecha {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key id;
@Persistent
private String nombre;
@Persistent
private Date
@Persistent
private Date fechaFin;
@Persistent(defaultFetchGroup = true)
ListPartido partidos;
The child class:
@PersistenceCapable
public class RegFechaUsuario extends Fecha {
@Persistent
private int puntos;
@Persistent
private Long idUsuarioFecha;
@Persistent
private Long idFechaOriginal;
And the code of run the exception is:
Transaction tx = pm.currentTransaction();
try {
tx.begin();
pm.makePersistentAll(regFechaUsuario);
//here is the exception
tx.commit();
And the regFechaUsuario is created with the build:
public RegFechaUsuario(String nombre, Date fechaIni, Date fechaFin,
Long idUsuarioFecha, Long idFechaOriginal, ListPartidopartidos)
{
//super(nombre,fechaIni,fechaFin,partidos);
this.puntos = 0;
this.idUsuarioFecha = idUsuarioFecha;
this.idFechaOriginal = idFechaOriginal;
this.partidos=partidos;
}
The exception is:
Problem accessing /Prode/JugarFecha.action. Reason:
java.lang.Long cannot be cast to java.lang.String
Caused by:
java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.String
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.checkForParentSwitch(DatastoreRelationFieldManager.java:
202)
at org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.setObjectViaMapping(DatastoreRelationFieldManager.java:133)
at org.datanucleus.store.appengine.DatastoreRelationFieldManager
$1.apply(DatastoreRelationFieldManager.java:112)
at
org.datanucleus.store.appengine.DatastoreRelationFieldManager.storeRelations(DatastoreRelationFieldManager.java:
81)
at
org.datanucleus.store.appengine.DatastoreFieldManager.storeRelations(DatastoreFieldManager.java:
955)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.storeRelations(DatastorePersistenceHandler.java:
546)
at org.datanucleus.store.appengine.DatastorePersistenceHandler.
Regards
Lisandro
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