I have seen a similar question in this forum, here it is Mapping Value in Junction Table & hibernate.PropertyAccessException: could not set a field value by reflection setter
I've applied the solution mentioned in this question but still I am facing the same problem. I don't know what am I missing.
My classes -
EmployeeID.java
@IdClass(value = EmployeeID.class)
public class EmployeeID implements Serializable{
private int empID;
private int deptID;
public EmployeeID() {
}
public EmployeeID(int empID, int deptID) {
this.empID = empID;
this.deptID = deptID;
}
public int getEmpID() {
return empID;
}
public int getDeptID() {
return deptID;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + deptID;
result = prime * result + empID;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
EmployeeID other = (EmployeeID) obj;
if (deptID != other.deptID)
return false;
if (empID != other.empID)
return false;
return true;
}
}
Employee.java
@Entity(name="EMPLOYEE")
@IdClass(value = EmployeeID.class)
public class Employee {
@Id @GeneratedValue
@Column(name="EMP_ID")
private int empID;
@Id @GeneratedValue
@Column(name="DEPT_ID")
private int deptID;
public int getEmpID() {
return empID;
}
public void setEmpID(int empID) {
this.empID = empID;
}
public int getDeptID() {
return deptID;
}
public void setDeptID(int deptID) {
this.deptID = deptID;
}
@Column(name="EMP_NAME")
private String empName;
public String getEmpName() {
return empName;
}
public void setEmpName(String empName) {
this.empName = empName;
}
}
And this is my test code -
try {
Employee emp = new Employee();
emp.setEmpName("New Employee");
Session session = factory.openSession();
session.beginTransaction();
session.save(emp);
session.getTransaction().commit();
session.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
factory.close();
}
On running this test code I get this exception trace -
org.hibernate.PropertyAccessException: could not set a field value by reflection setter of EmployeeID.deptID
at org.hibernate.property.DirectPropertyAccessor$DirectSetter.set(DirectPropertyAccessor.java:134)
at org.hibernate.mapping.Component$ValueGenerationPlan.execute(Component.java:441)
at org.hibernate.id.CompositeNestedGeneratedValueGenerator.generate(CompositeNestedGeneratedValueGenerator.java:121)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702)
at CompositeKeyDemo.main(CompositeKeyDemo.java:15)
Caused by: java.lang.IllegalArgumentException: Can not set int field EmployeeID.deptID to org.hibernate.id.IdentifierGeneratorHelper$2
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168)
at sun.reflect.UnsafeIntegerFieldAccessorImpl.set(UnsafeIntegerFieldAccessorImpl.java:98)
at java.lang.reflect.Field.set(Field.java:741)
at org.hibernate.property.DirectPropertyAccessor$DirectSetter.set(DirectPropertyAccessor.java:122)
... 12 more
Am i doing something silly.
Thanks in Advance !!
