ChildCrudEntity.java

package au.com.vaadinutils.crud;


public interface ChildCrudEntity extends CrudEntity
{
	/**
	 * This is so the child crud can select the same record after saving one or
	 * more new records
	 * 
	 * as the id doesn't exist before the entity is persisted and the child crud
	 * has possibly multiple records uncommitted it needs a "GUID" that is
	 * created when the entity is instantiated so that it can locate the record
	 * again after being persisted.
	 * 
	 * recommended implementation looks like this...
	 * 
	 * <pre>
	 * <code>
	 * 
	 * {@literal @}NotNull
	 * {@literal @}Column(updatable = false) 
	 * String guid = JpaEntityHelper.getGuid(this);
	 * 
	 * {@literal @}Override public String getGuid() 
	 * { 
	 * 		return guid; 
	 * }
	 * </code>
	 * </pre>
	 * 
	 */
	String getGuid();
}