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/*
 * Copyright 2010-2013 Ning, Inc.
 *
 * Ning licenses this file to you 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 com.ning.billing.catalog.api;

import org.joda.time.DateTime;
import org.joda.time.Period;

public interface Duration {

    /**
     * @return the {@code TimeUnit}
     */
    public TimeUnit getUnit();

    /**
     * @return the number of units
     */
    public int getNumber();

    /**
     * @param dateTime the date to add to that duration
     * @return the joda {@code Period}
     */
    public DateTime addToDateTime(DateTime dateTime);

    public Period toJodaPeriod();
}