How to use

getCompositeIdentity

method

in

org.grails.datastore.mapping.model.PersistentEntity

private int calculateForeignKeyColumnCount(PersistentEntity refDomainClass, String[] propertyNames) {
  int expectedForeignKeyColumnLength = 0;
  for (String propertyName : propertyNames) {
    PersistentProperty referencedProperty = refDomainClass.getPropertyByName(propertyName);
    if(referencedProperty instanceof ToOne) {
      ToOne toOne = (ToOne) referencedProperty;
      PersistentProperty[] compositeIdentity = toOne.getAssociatedEntity().getCompositeIdentity();
      if(compositeIdentity != null) {
        expectedForeignKeyColumnLength += compositeIdentity.length;
      }
      else {
        expectedForeignKeyColumnLength++;
      }
    }
    else {
      expectedForeignKeyColumnLength++;
    }
  }
  return expectedForeignKeyColumnLength;
}

PersistentProperty[] composite = entity.getCompositeIdentity();
if(composite != null) {
  for (PersistentProperty property : composite) {

PersistentProperty[] compositeIdentity = toOne.getAssociatedEntity().getCompositeIdentity();
if(compositeIdentity != null) {
  for (PersistentProperty cip : compositeIdentity) {