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POGeneric callback methods(@PostLoad..) for inherited entity classes - JPA EclipseLink
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copied!<p>My entity class hierarchy is as follows.. <strong>ClassB</strong> which extends <strong>ClassA</strong> which extends abstract mappedsuperclass <strong>AbstractClass</strong></p> <p><strong>AbstractClass</strong></p> <pre><code>@MappedSuperclass public abstract class AbstractClass implements Serializable { } </code></pre> <p><strong>ClassA</strong></p> <pre><code>@Table(name = "TABLE_ONE") @SecondaryTable(name = "TABLE_TWO", @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name="Type", discriminatorType=DiscriminatorType.STRING) @DiscriminatorValue("ClassA") public class ClassA extends AbstractClass { @Column(name = "CLASSA_XML") private String ClassAXML; @PrePersist @PreUpdate public void covertObjectToXml() { this.ClassAXML= JAXBUtilities.marshal(Object); } @PostLoad public void convertXmlToObject() { //does unmarshal } } </code></pre> <p><strong>ClassB</strong></p> <pre><code>@DiscriminatorValue("ClassB") public class ClassB extends ClassA { @Column(name = "CLASSB_XML", table = "TABLE_TWO") private String ClassBXML; @PrePersist @PreUpdate public void covertObjectToXml() { this.ClassAXML= JAXBUtilities.marshal(Object); } @PostLoad public void convertXmlToObject() { //does unmarshal } } </code></pre> <p>Problem : when i persist using ClassB entity. ClassA callback methods are not called and value in my classAXml attribute is not persisted.</p> <p>Is there anyway to generalize <strong>callback method</strong>(i.e covertObjectToXml and convertXmlToObject) for my inherited entity class structure.. so that <strong>when i persist using both ClassA and ClassB individually</strong>, my callback methods are called respectively based on inheritance and their values can be persisted.</p> <p>Note: </p> <ol> <li>I have removed the callback methods from ClassA and generalize it in classB and persist but my requirement is mainly individual persistent of classA and ClassB.</li> <li>my call back methods should not be in mapedSuperClass i.e AbstractClass.</li> </ol> <p>Thanks in advance</p>

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