/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jbpm.casemgmt.api.model.instance;

import java.util.Date;

/**
 * Represents single instance of a milestone in a case. As long as it's not achieved 
 * it can be still updated, once achieved it's read only.
 *
 */
public interface CaseMilestoneInstance {
    /**
     * Returns id of the milestone.
     * @return
     */
    String getId();
    /**
     * Returns name of the milestone.
     * @return
     */
    String getName();
    
    /**
     * Indicates if this milestone is already achieved or not.
     * @return
     */
    boolean isAchieved();
    
    /**
     * In case this milestone is achieved, returns date at it was achieved.
     * @return
     */
    Date getAchievedAt();
    
    /**
     * Returns status of this milestone
     * @return
     */
    MilestoneStatus getStatus();
}