Hi,
ich benutze EJB und als Persistence Provider Hibernate.
ich habe Probleme eine einfach Datenbankabfrage zu machen.
in meiner EJB:
Code:
public List<Course> getCoursesForInstructor(CmtUser instructor){
try{
String id = instructor.getId().toString();
//Long id = instructor.getId();
Query q = em.createQuery(
"SELECT c FROM Course c" +
[b]" WHERE c.instructor = :instrId")[/b];
q.setParameter("instrId",id);
List<Course> courses = (List<Course>) q.getResultList();
return courses ;
}
...
Folgender Code funktioniert:
Code:
WHERE c.instructor = 2
WEnn ich aber versuche, Parameter zu setzen mit
Code:
q.setParameter("instrId",id);
bekomme ich eine
Code:
IllegalArgumentException ...
...org.hibernate.PropertyAccessException: could not get a field value by reflection getter of de.cmt
.model.CmtUser.id)
Hier der Code der Entities:
Code:
@Entity
public class Course implements Serializable{
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String title;
private String abbreviation;
private String description;
private String semester;
@Column(columnDefinition="BOOL")
private boolean active = false;
@ManyToOne
@JoinColumn(name="instructor")
private CmtUser instructor;
public Course(){}
public Course(String title, String abbreviation, String description, String semester,boolean active
,CmtUser instructor){
this.title = title;
this.abbreviation = abbreviation;
this.description = description;
this.semester = semester;
this.active = active;
this.instructor = instructor;
}
...getter and setter
CmtUser:
Code:
@Entity
@Table(name="CmtUser", uniqueConstraints=@UniqueConstraint(columnNames={"userName","passWord","email"}))
public class CmtUser implements Serializable{
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String userName;
private String firstName;
private String lastName;
private String passWord;
private String email;
@Embedded
private UserSettings settings = new UserSettings();
@ManyToMany(fetch=FetchType.EAGER)
private List <Role> roles = new ArrayList<Role>();
public CmtUser(){}
public CmtUser(String userName, String firstName, String lastName, String passWord, String email){
this.userName = userName;
this.firstName = firstName;
this.lastName = lastName;
this.passWord = passWord;
this.email = email;
}
...getter and setter
Stacktrace aus server.log:
Code:
2008-12-06 21:25:26,375 DEBUG [org.hibernate.hql.ast.QueryTranslatorImpl] (http-localhost%2F127.0.0.
1-8080-1) parse() - HQL: SELECT c FROM de.cmt.model.Course c WHERE c.instructor = :instrId
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.AST] (http-localhost%2F127.0.0.1-8080-1) --- HQ
L AST ---
\-[QUERY] 'query'
+-[SELECT_FROM] 'SELECT_FROM'
| +-[FROM] 'FROM'
| | \-[RANGE] 'RANGE'
| | +-[DOT] '.'
| | | +-[DOT] '.'
| | | | +-[DOT] '.'
| | | | | +-[IDENT] 'de'
| | | | | \-[IDENT] 'cmt'
| | | | \-[IDENT] 'model'
| | | \-[IDENT] 'Course'
| | \-[ALIAS] 'c'
| \-[SELECT] 'SELECT'
| \-[IDENT] 'c'
\-[WHERE] 'WHERE'
\-[EQ] '='
+-[DOT] '.'
| +-[IDENT] 'c'
| \-[IDENT] 'instructor'
\-[COLON] ':'
\-[IDENT] 'instrId'
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.ErrorCounter] (http-localhost%2F127.0.0.1-8080-
1) throwQueryException() : no errors
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.antlr.HqlSqlBaseWalker] (http-localhost%2F127.0.0.1
-8080-1) select << begin [level=1, statement=select]
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.tree.FromElement] (http-localhost%2F127.0.0.1-8
080-1) FromClause{level=1} : de.cmt.model.Course (c) -> course0_
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.tree.FromReferenceNode] (http-localhost%2F127.0
.0.1-8080-1) Resolved : c -> course0_.id
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.tree.FromReferenceNode] (http-localhost%2F127.0
.0.1-8080-1) Resolved : c -> course0_.id
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.tree.DotNode] (http-localhost%2F127.0.0.1-8080-
1) getDataType() : instructor -> org.hibernate.type.ManyToOneType(de.cmt.model.CmtUser)
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.tree.DotNode] (http-localhost%2F127.0.0.1-8080-
1) dereferenceShortcut() : property instructor in de.cmt.model.Course does not require a join.
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.tree.DotNode] (http-localhost%2F127.0.0.1-8080-
1) terminal propertyPath = [instructor]
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.tree.FromReferenceNode] (http-localhost%2F127.0
.0.1-8080-1) Resolved : c.instructor -> course0_.instructor
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.antlr.HqlSqlBaseWalker] (http-localhost%2F127.0.0.1
-8080-1) select : finishing up [level=1, statement=select]
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.HqlSqlWalker] (http-localhost%2F127.0.0.1-8080-
1) processQuery() : ( SELECT ( {select clause} course0_.id ) ( FromClause{level=1} Course course0_
) ( WHERE ( = ( course0_.instructor course0_.id instructor ) ? ) ) )
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.util.JoinProcessor] (http-localhost%2F127.0.0.1
-8080-1) Using FROM fragment [Course course0_]
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.antlr.HqlSqlBaseWalker] (http-localhost%2F127.0.0.1
-8080-1) select >> end [level=1, statement=select]
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.AST] (http-localhost%2F127.0.0.1-8080-1) --- SQ
L AST ---
\-[SELECT] QueryNode: 'SELECT' querySpaces (Course)
+-[SELECT_CLAUSE] SelectClause: '{select clause}'
| +-[ALIAS_REF] IdentNode: 'course0_.id as id0_' {alias=c, className=de.cmt.model.Course, table
Alias=course0_}
| \-[SQL_TOKEN] SqlFragment: 'course0_.abbreviation as abbrevia2_0_, course0_.active as active0
_, course0_.description as descript4_0_, course0_.instructor as instructor0_, course0_.semester as s
emester0_, course0_.title as title0_'
+-[FROM] FromClause: 'FROM' FromClause{level=1, fromElementCounter=1, fromElements=1, fromElemen
tByClassAlias=[c], fromElementByTableAlias=[course0_], fromElementsByPath=[], collectionJoinFromElem
entsByPath=[], impliedElements=[]}
| \-[FROM_FRAGMENT] FromElement: 'Course course0_' FromElement{explicit,not a collection join,n
ot a fetch join,fetch non-lazy properties,classAlias=c,role=null,tableName=Course,tableAlias=course0
_,origin=null,colums={,className=de.cmt.model.Course}}
\-[WHERE] SqlNode: 'WHERE'
\-[EQ] BinaryLogicOperatorNode: '='
+-[DOT] DotNode: 'course0_.instructor' {propertyName=instructor,dereferenceType=ROOT_LEVEL
,propertyPath=instructor,path=c.instructor,tableAlias=course0_,className=de.cmt.model.Course,classAl
ias=c}
| +-[ALIAS_REF] IdentNode: 'course0_.id' {alias=c, className=de.cmt.model.Course, tableAl
ias=course0_}
| \-[IDENT] IdentNode: 'instructor' {originalText=instructor}
\-[NAMED_PARAM] ParameterNode: '?' {name=instrId, expectedType=org.hibernate.type.ManyToOn
eType(de.cmt.model.CmtUser)}
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.ErrorCounter] (http-localhost%2F127.0.0.1-8080-
1) throwQueryException() : no errors
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.QueryTranslatorImpl] (http-localhost%2F127.0.0.
1-8080-1) HQL: SELECT c FROM de.cmt.model.Course c WHERE c.instructor = :instrId
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.QueryTranslatorImpl] (http-localhost%2F127.0.0.
1-8080-1) SQL: select course0_.id as id0_, course0_.abbreviation as abbrevia2_0_, course0_.active as
active0_, course0_.description as descript4_0_, course0_.instructor as instructor0_, course0_.semes
ter as semester0_, course0_.title as title0_ from Course course0_ where course0_.instructor=?
2008-12-06 21:25:26,453 DEBUG [org.hibernate.hql.ast.ErrorCounter] (http-localhost%2F127.0.0.1-8080-
1) throwQueryException() : no errors
2008-12-06 21:25:26,453 DEBUG [org.hibernate.jdbc.AbstractBatcher] (http-localhost%2F127.0.0.1-8080-
1) about to open PreparedStatement (open PreparedStatements: 0, globally: 0)
2008-12-06 21:25:26,453 DEBUG [org.hibernate.jdbc.ConnectionManager] (http-localhost%2F127.0.0.1-808
0-1) opening JDBC connection
2008-12-06 21:25:26,453 DEBUG [org.hibernate.SQL] (http-localhost%2F127.0.0.1-8080-1) select course0
_.id as id0_, course0_.abbreviation as abbrevia2_0_, course0_.active as active0_, course0_.descripti
on as descript4_0_, course0_.instructor as instructor0_, course0_.semester as semester0_, course0_.t
itle as title0_ from Course course0_ where course0_.instructor=?
2008-12-06 21:25:26,453 DEBUG [org.hibernate.jdbc.AbstractBatcher] (http-localhost%2F127.0.0.1-8080-
1) about to close PreparedStatement (open PreparedStatements: 1, globally: 1)
2008-12-06 21:25:26,453 DEBUG [org.hibernate.jdbc.ConnectionManager] (http-localhost%2F127.0.0.1-808
0-1) aggressively releasing JDBC connection
2008-12-06 21:25:26,453 DEBUG [org.hibernate.jdbc.ConnectionManager] (http-localhost%2F127.0.0.1-808
0-1) releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, glob
ally: 0)]
2008-12-06 21:25:26,453 DEBUG [org.hibernate.ejb.AbstractEntityManagerImpl] (http-localhost%2F127.0.
0.1-8080-1) mark transaction for rollback
2008-12-06 21:25:26,500 DEBUG [org.jboss.jpa.deployment.ManagedEntityManagerFactory] (http-localhost
%2F127.0.0.1-8080-1) ************** closing entity managersession **************
2008-12-06 21:25:26,718 ERROR [facelets.viewhandler] (http-localhost%2F127.0.0.1-8080-1) Error Rende
ring View[/app/course/show_courses.xhtml]
javax.faces.FacesException: javax.el.ELException: /app/course/show_courses.xhtml @20,90 rendered="#{!empty courseBean.coursesForInstructor}": Error reading 'coursesForInstructor' on type de.cmt.managedBeans.CourseBean
at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:393)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:930)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:148)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:936)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:942)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:196)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:109)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290
)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235
)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235
)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:189)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:91)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishm
entValve.java:92)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:325)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
Caused by: javax.el.ELException: /app/course/show_courses.xhtml @20,90 rendered="#{!empty courseBean.coursesForInstructor}": Error reading 'coursesForInstructor' on type de.cmt.managedBeans.CourseBean
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:76)
at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:390)
... 38 more
Caused by: javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.PropertyAcc
essException: could not get a field value by reflection getter of de.cmt.model.CmtUser.id
at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:77)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.j
ava:157)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:6
5)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterce
ptor.java:67)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:462)
at org.jboss.ejb3.remoting.IsLocalInterceptor.invokeLocal(IsLocalInterceptor.java:97)
at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
at $Proxy199.invoke(Unknown Source)
at org.jboss.ejb3.proxy.handler.session.SessionSpecProxyInvocationHandlerBase.invoke(SessionSpecPro
xyInvocationHandlerBase.java:125)
at $Proxy198.getCoursesForInstructor(Unknown Source)
at de.cmt.managedBeans.CourseBean.getCoursesForInstructor(CourseBean.java:45)
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:585)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:62)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
at org.apache.el.parser.AstValue.getValue(AstValue.java:118)
at org.apache.el.parser.AstEmpty.getValue(AstEmpty.java:45)
at org.apache.el.parser.AstNot.getValue(AstNot.java:42)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
... 39 more
Caused by: javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: could not
get a field value by reflection getter of de.cmt.model.CmtUser.id
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.
java:614)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:76)
at de.cmt.beans.courseAdministration.CourseHandler.getCoursesForInstructor(CourseHandler.java:56)
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:585)
at org.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
at org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
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:585)
at org.jboss.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterce
ptor.java:72)
at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_3
0456965.invoke(InvocationContextInterceptor_z_fillMethod_30456965.java)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.
java:88)
at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_304569
65.invoke(InvocationContextInterceptor_z_setup_30456965.java)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityMa
nagerInterceptor.java:56)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:6
8)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
... 76 more
Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter o
f de.cmt.model.CmtUser.id
at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:58)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:206)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.jav
a:3619)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:
3335)
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:204)
at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:241)
at org.hibernate.type.EntityType.getIdentifier(EntityType.java:430)
at org.hibernate.type.ManyToOneType.nullSafeSet(ManyToOneType.java:110)
at org.hibernate.param.NamedParameterSpecification.bind(NamedParameterSpecification.java:61)
at org.hibernate.loader.hql.QueryLoader.bindParameterValues(QueryLoader.java:514)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1589)
at org.hibernate.loader.Loader.doQuery(Loader.java:696)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
at org.hibernate.loader.Loader.doList(Loader.java:2228)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125)
at org.hibernate.loader.Loader.list(Loader.java:2120)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:361)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1148)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:67)
... 107 more
Caused by: java.lang.IllegalArgumentException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:37)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:18)
at java.lang.reflect.Field.get(Field.java:357)
at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:55)
... 128 more
Ich hoffe es kann jemand helfen ich hänge schon ewig an diesem Problem! Danke, Nicki
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