Checking for multiple child constraint violations in Hibernate/JPA - spring

Question

TL;DR: Is it possible to perform nested transactions in Hibernate that use SavePoints to rollback to specific states?
So I am attempting to persist a parent entity with a OneToMany mapping to child entities. This is working fine.
During this persistence, I would like to catch and log ALL constraint violations that occur. Currently, the FIRST entity (child or parent) to have a constraint violation throws a ConstraintViolationException and rolls back the transaction. I would like for the transaction to still be rolled back, but somehow collect ALL of the constraint violations that would occur.
Here is a brief outline of my entities:
ParentEntity.java
#Entity
#Table(name = "PARENT", schema = "SOMESCHEMA")
public class ParentEntity {
private static final ID_COLUMN = "ID_COLUMN";
#Id
#Column(name = ID_COLUMN)
private Long id;
#OneToMany(fetch = FetchType.LAZY, cascade = {CascadeType.ALL}, orphanRemoval = true)
#JoinColumn(name = ID_COLUMN, referencedColumnName = ID_COLUMN)
private List<childEntity> children;
}
ChildEntity.java
#Entity
#Table(name = "CHILD", schema = "SOMESCHEMA")
public class ChildEntity {
public ChildEntity(String input) {
this.validationString = input;
}
#Id
#Column(name = ParentEntity.ID_COLUMN)
private Long id;
#ManyToOne
#JoinColumn(name = ParentEntity.ID_COLUMN, insertable = false, updatable = false)
private ParentEntity parent;
// The field under validation (should be less than 25 char's long)
#Column(name = "VALIDATE_ME")
private String validationString;
}
Example run:
public void someMethod() {
ParentEntity parent = new ParentEntity();
parent.addChild(new Child("good input 1"));
parent.addChild(new Child("bad input 1 break here"));
parent.addChild(new Child("bad input 2 break here"));
parent.addChild(new Child("good input 2"));
dataAccessObject.persist(parent);
}
Results:
I see the transaction rolled back and the ConstraintViolationException only contains information for the first bad child.
Desired Results:
I see the transaction rolled back and the ConstraintViolationException show information for all the bad children regardless of how many children were bad. (Also, if the parent has a constraint violation, I would still like to check the child constraints)
Is this possible?

Answer 1

ConstraintViolationException is a HibernateException and all Hibernate exceptions are not recoverable. So if one exception is thrown, you cannot rely on the existing session state to continue processing reliably.
So this is not possible or recommended.

Answer 2

I found a way to accomplish my end result, although it was through means I did not expect.
In order to accomplish my goal, I would need to use nested transactions and SavePoints. At the end of the day, that implementation would still produce invalid data in my database, because during the time it takes to find an error in a child, some of the other children may have already been persisted and a consumer of my database would be unaware that the parent and all it's children were about to be deleted due to one or more bad entities (parents or children).
My solution:
I implemented a validator to validate all of the parents and children before going to persist them. The drawback to this method is that I have to annotate constraints on my entity fields, but double validation is never a bad thing.
The answer to my original question:
This is impossible to due with my version of Hibernate, unless I implemented custom SavePoint functionality to support nested transactions.