/**
* Creates foreign keys for subclass tables that are mapped using table per subclass. Further
* information is available in the <a href="http://jira.grails.org/browse/GRAILS-7729">JIRA
* ticket</a>
*/
private void createSubclassForeignKeys() {
if (subclassForeignKeysCreated) {
return;
}
for (PersistentClass persistentClass : classes.values()) {
if (persistentClass instanceof RootClass) {
RootClass rootClass = (RootClass) persistentClass;
if (rootClass.hasSubclasses()) {
Iterator subclasses = rootClass.getSubclassIterator();
while (subclasses.hasNext()) {
Object subclass = subclasses.next();
// This test ensures that foreign keys will only be created for subclasses that are
// mapped using "table per subclass"
if (subclass instanceof JoinedSubclass) {
JoinedSubclass joinedSubclass = (JoinedSubclass) subclass;
joinedSubclass.createForeignKey();
}
}
}
}
}
subclassForeignKeysCreated = true;
}
