How to use OneToOne with Hibernate Formula

Question

I want to set an OneToOne entity using a Formula.

I have tried the following but the result is always null (I guess because the co

Answer 1

@Formula is ignored, because it is only valid as replacement for @Column. And that one is not used for relationships mappings.

But you can use @Where instead, which exists for collections:

@OneToMany
@JoinTable(name = "PRODUCTION_MEDIAASSET_NEW", joinColumns = @JoinColumn(name = "PRODUCTION_ORDER_ID", referencedColumnName = "MEDIAASSET_ORDER_ID"))
@Where("KEY_TEXT = 1")
private Collection keyMediaAsset;

To access your original keyMediaAsset object you can use a specific getter:

public MediaAssetOrder getKeyMediaAsset() {
  return keyMediaAsset.isEmpty() ? null : keyMediaAsset.iterator().next();
}