5
ho strano problema quando cerco di entità di proprietà:Hibernate: Errore durante l'accesso campo [java.lang.Integer privato] per riflessione per la proprietà persistente
Hibernate:
select
tarifklsk0_.ID as ID1_12_0_,
tarifklsk0_.FK_TARIF as FK_TARIF2_12_0_,
tarifservp1_.FK_TARIF as FK_TARIF2_11_1_,
tarifservp1_.ID as ID1_11_1_,
tarifservp1_.ID as ID1_11_2_,
tarifservp1_.FK_TARIF as FK_TARIF2_11_2_,
tarifservp1_.N1 as N3_11_2_
from
TR.TARIFXKLSK tarifklsk0_
left outer join
TR.TARIF_SERV_PROP tarifservp1_
on tarifklsk0_.FK_TARIF=tarifservp1_.FK_TARIF
where
tarifklsk0_.ID=?
Jun 13, 2016 7:38:26 AM org.hibernate.event.internal.DefaultLoadEventListener doOnLoad
INFO: HHH000327: Error performing load command : org.hibernate.property.access.spi.PropertyAccessException: Error accessing field [private java.lang.Integer TarifKlsk.fkTarif] by reflection for persistent property [TarifKlsk#fkTarif] : 1027303
Exception in thread "main" org.hibernate.property.access.spi.PropertyAccessException: Error accessing field [private java.lang.Integer TarifKlsk.fkTarif] by reflection for persistent property [TarifKlsk#fkTarif] : 1027303
at org.hibernate.property.access.spi.GetterFieldImpl.get(GetterFieldImpl.java:43)
....skipped...
Caused by: java.lang.IllegalArgumentException: Can not set java.lang.Integer field TarifKlsk.fkTarif to java.lang.Integer
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
I miei soggetti:
TarifKlsk
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import org.hibernate.annotations.BatchSize;
@SuppressWarnings("serial")
@Entity
@Table(name = "TARIFXKLSK", schema="TR")
public class TarifKlsk implements java.io.Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID", updatable = false, nullable = false)
private Integer id;
@OneToMany(fetch = FetchType.EAGER)
@JoinColumn(name="FK_TARIF", referencedColumnName="FK_TARIF")
@BatchSize(size = 50)
private Set<TarifServProp> tarifservprop = new HashSet<TarifServProp>(0);
@Column(name = "FK_TARIF", updatable = false, nullable = false)
private Integer fkTarif;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Set<TarifServProp> getTarifservprop() {
return tarifservprop;
}
public void setTarifservprop(Set<TarifServProp> tarifservprop) {
this.tarifservprop = tarifservprop;
}
public Integer getFkTarif() {
return fkTarif;
}
public void setFkTarif(Integer fkTarif) {
this.fkTarif = fkTarif;
}
}
TarifServProp
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@SuppressWarnings("serial")
@Entity
@Table(name = "TARIF_SERV_PROP", schema="TR")
public class TarifServProp implements java.io.Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID", updatable = false, nullable = false)
private Integer id;
@Column(name = "FK_TARIF", updatable = false, nullable = false)
private Integer fkTarif;
public Integer getId() {
return id;
}
@Column(name = "N1", updatable = false, nullable = false)
private Integer n1;
public void setId(Integer id) {
this.id = id;
}
public Integer getFkTarif() {
return fkTarif;
}
public void setFkTarif(Integer fkTarif) {
this.fkTarif = fkTarif;
}
public Integer getN1() {
return n1;
}
public void setN1(Integer n1) {
this.n1 = n1;
}
}
mio modulo di test:
public static void main(String[] args) {
SessionFactory sf = HibernateUtil.getSessionFactory();
Session sess = sf.openSession();
sess.beginTransaction();
TarifKlsk k2=sess.get(TarifKlsk.class, 1027303);
for (TarifServProp t : k2.getTarifservprop()) {
System.out.println("Tar="+t.getN1());
}
System.out.println("End init");
Che cosa sto facendo di sbagliato? Ho controllato tutti i campi di queste entità e tutti loro nome correttamente ....
UPdt mio pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.journaldev.hibernate</groupId>
<artifactId>HibernateEHCacheExample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<description>Hibernate Secondary Level Cache Example using EHCache implementation</description>
<dependencies>
<!-- Hibernate Core API -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.1.0.Final</version>
</dependency>
<!-- EHCache Core APIs -->
<!-- http://mvnrepository.com/artifact/net.sf.ehcache/ehcache-core -->
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-core</artifactId>
<version>2.6.11</version>
</dependency>
<!-- http://mvnrepository.com/artifact/org.hibernate/hibernate-ehcache -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>5.2.0.Final</version>
</dependency>
<!-- EHCache uses slf4j for logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.5</version>
</dependency>
</dependencies>
</project>
UPD2
ho ho scoperto che la mia entità figlio non contiene record con fk_tarif corrispondente al fk_tarif dal master ... ma penso che non importi, perché esiste un errore?
E 'così strano, ma quando ho impostato la versione Hibernate per 4.1.9.Final il mio codice funziona bene: ***** ***** Fetch Count = 0 Secondo Livello Hit Count = 0 Secondo Livello Miss Count = 0 Secondo conteggio Put Level = 0 Completo! Può esserci un bug nella versione di ibernazione versione superiore 4.1.9? – Lev