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POCascadeType.Persist not working with primary key generator type table in JPA
 

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    <p>I have an issue using CascadeType.Persist for my JPA/Standalone project. I have a Parent entity which has a List of Child entities that should be persisted along with the Parent and the primary key of Parent is generated using the Table(GeneratorType.TABLE) and I use a table to generate the Primary Key. </p> <p>In Parent I have :</p> <pre><code> @OneToMany(mappedBy="parent",fetch=FetchType.EAGER,cascade= {CascadeType.PERSIST,CascadeType.DETACH}) List&lt;Child&gt; children; //Getter and Setter @PostPersist public void setParentID(){ System.out.println("Inside Postpersist"); for(Child ch : this.children){ ch.setParent(this); System.out.println(ch.getParent().getParentId()); } } </code></pre> <p>In Child :</p> <pre><code> @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "Parent_ID") private Parent parent; </code></pre> <p>In the DB I have a not null set to Parent_ID column of the Parent table. When I persist a Parent entity and it has been set with list of Child entities it throws a </p> <pre><code> ConstraintViolationException: Cannot insert the value NULL into column 'Parent_ID', table 'jpaTest.Child', column does not allow nulls. </code></pre> <p>as the Parent is null for all the Child entities though it prints the ParentId set to every Child entity in the method annotated with @PostPersist </p> <p>However this does not occur and persistence of parent and child takes place when I change the primary key generation strategy from TABLE type to AUTO. How and why is this happening. </p> <p>The provider is Hibernate. And my DB server is the mssql.</p>
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