ConsoleScanable.java

package MusicLandscape.util;

/**
 * This interface encapsulates the concept of scanning and editing an implementing class on the console
 * (with a text-based user interface).
 * <p>
 * Implementing classes provide a method scan that guides the user through the process of reviewing and possibly
 * changing current values. The resulting object is in a consistent state, i.e. it is taken care that no illegal
 * values or combination of values are accepted.
 *
 * @author Jonas Altrock (ew20b126@technikum-wien.at)
 * @version 1
 * @since ExerciseSheet04
 */
public interface ConsoleScanable {
    /**
     * Guides the user through a process that allows scanning/modifying an object with a text-based user interface.
     * Implementing classes may choose to provide a cancel mechanism and/or a keep-old-value mechanism. The user
     * interaction is completely left to implementing classes and must be documented there.
     * <p>
     * Documentation should include:
     *
     * <ul>
     *   <li>which fields and in which order they can be modified</li>
     *   <li>if and how cancellation and keeping old values works</li>
     *   <li>how illegal inputs are dealt with (message, repeated input of single field or all fields,...)</li>
     * </ul>
     *
     * @return whether this object was altered or not
     */
    public boolean scan();
}