Hibernate only uses the discrimnator value if it is really needed (single table strategy). Since the class type for the strategy joined is clear by itself the discriminator value will be null. You can use the following hack to work around this:


|  /*
|   * This is workaround for a hibernate bug:
|   * -> http://opensource.atlassian.com/projects/hibernate/browse/ANN-140?page=all
|   */
|  @Column(name="DISCRIMINATOR",length=31)
|  public String getDiscriminatorValue() {
|    DiscriminatorValue discriminatorValueAnnotation = this.getClass().getAnnotation(DiscriminatorValue.class);
|    if (discriminatorValueAnnotation != null) {
|      return discriminatorValueAnnotation.value();
|    }
|    return this.getClass().getSimpleName();
|  }
|  
|  public void setDiscriminatorValue(String dummy) {
|  }
|

You will have to tweak it to use an integer as the discriminator value.

Regards

Felix

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