import com.mendix.systemwideinterfaces.core.IMendixObject.ObjectState; //导入依赖的package包/类
/**
 * checks whether a certain member of an object has changed. If the objects itself is still new, we consider to be changes as well.
 * @param item
 * @param member
 * @param context
 * @return
 */
public static boolean memberHasChanged(IContext context, IMendixObject item, String member)
{
	if (item == null)
		throw new IllegalArgumentException("The provided object is empty");
	if (!item.hasMember(member))
		throw new IllegalArgumentException("Unknown member: " + member);
	return item.getMember(context, member).getState() == MemberState.CHANGED || item.getState() != ObjectState.NORMAL; 
}