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POHibernate: Removing item from a List does not persist
 

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    <p>I am having trouble when removing an item from a list. The list is defined in a superclass, but the Hibernate annotations are applied to property accessors in a subclass. There are two methods in the superclass that manipulate the list. The "add" method works fine, but the "remove" does not persist changes. I have checked my Cascade settings, and I seem to have things correct. Am I doing something that is impossible. If not, am I doing something incorrectly? </p> <p>Here are my classes:</p> <pre><code>@Entity abstract class Temporal&lt;T&gt; { @Id @GeneratedValue private Long id; @Version private Integer version = null; @Transient protected List&lt;T&gt; content = new ArrayList&lt;T&gt;(); public void remove(T value) { // business logic ... content.remove(value); } public void add(T value) { // business logic ... content.add(value); } } @Entity @AccessType("property") class TemporalAsset extends Temporal&lt;Asset&gt; { @OneToMany(cascade = CascadeType.ALL, mappedBy = "temporal") public List&lt;Asset&gt; getContent() { return super.content; } protected void setContent(List&lt;Asset&gt; list) { super.content = list; } } </code></pre> <p>I use an instance of the TemporalAsset class as follows (note that I am only use the "refresh" method to demonstrate the behavior. The list does not persist correctly even if I flush or close the session and open a new session): </p> <pre><code>temporalAsset.add(value1); temporalAsset.getContent().size() == 1; // true session.update(temporalAsset); session.refresh(temporalAsset); temporalAsset.getContent().size() == 1; // true temporalAsset.remove(value1); temporalAsset.getContent().size() == 0; // true session.update(temporalAsset); session.refresh(temporalAsset); temporalAsset.getContent().size() == 0; // false, its 1 </code></pre> <p>Thanks.</p>
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