content: /**
   * 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.apache.aurora.common.quantity;
  
  /**
   * Represents a unit hierarchy for a given unit of measure; eg: time.  Instances represent specific
   * units from the hierarchy; eg: seconds.
   *
   * @param <U> the type of the concrete unit implementation
   *
   * @author John Sirois
   */
  public interface Unit<U extends Unit<U>> {
  
    /**
     * Returns the weight of this unit relative to other units in the same hierarchy.  Typically the
     * smallest unit in the hierarchy returns 1, but this need not be the case.  It is only required
     * that each unit of the hierarchy return a multiplier relative to a common base unit for the
     * hierarchy.
     */
    double multiplier();
  }
  