Have this situation:

MainEntity
- subEntitys1 (OneToMany)
- subEntitys2 (OneToMany)
- subEntitys3 (OneToMany)

Code is very simple,

for MainEntity:

 @OneToMany(mappedBy="employee", cascade=CascadeType.ALL, fetch=FetchType.EAGER)
 public Collection<Education> getEducation() {
 return this.education;
 }

SubEntitys:

 @ManyToOne(optional=false)
 @JoinColumn(name="cEmployeeID")
 public Employee getEmployee() {
 return this.employee;
 }

The problem is that the result is a multiply of alle three subEntitys.

Sample:

 MainEntity have...
 4 subEntitys1 (x=4)
 3 subEntitys2 (y=3)
 5 subEntitys3 (z=5)

Then mainEntity.getSubEntitys1().size=60(x*y*z). This happend when you call getters more than once... Anyone with the same problem ? Will try to create a testcase, but now I use query to make a workaround...