Reference.java

package org.aplikator.server.descriptor;

public class Reference<R extends Entity> extends JoinableProperty<R> {


    @SuppressWarnings("unchecked")
    public Reference(String id, R referredEntity, Entity ownEntity, boolean required) {
        super(id, referredEntity, ownEntity, required);
        if (ownEntity.equals(referredEntity)) {
            throw new IllegalStateException("Self reference not supported");

        }
    }


    @SuppressWarnings("unchecked")
    public <T extends Entity> Reference<T> join(Reference<T> target) {
        return (Reference<T>) relate(target);
    }


}