001/*
002 * Portions of this software was developed by employees of the National Institute
003 * of Standards and Technology (NIST), an agency of the Federal Government and is
004 * being made available as a public service. Pursuant to title 17 United States
005 * Code Section 105, works of NIST employees are not subject to copyright
006 * protection in the United States. This software may be subject to foreign
007 * copyright. Permission in the United States and in foreign countries, to the
008 * extent that NIST may hold copyright, to use, copy, modify, create derivative
009 * works, and distribute this software and its documentation without fee is hereby
010 * granted on a non-exclusive basis, provided that this notice and disclaimer
011 * of warranty appears in all copies.
012 *
013 * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
014 * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
015 * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
016 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
017 * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
018 * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
019 * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
020 * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
021 * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
022 * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
023 * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
024 * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
025 */
026
027package gov.nist.secauto.metaschema.core.configuration;
028
029import edu.umd.cs.findbugs.annotations.NonNull;
030
031/**
032 * Provides a complete, abstract implementation of a generalized feature.
033 * Feature implementations can extend this class the implement configuration
034 * sets for a given purpose.
035 *
036 * @param <V>
037 *          the feature value type
038 */
039public abstract class AbstractConfigurationFeature<V> implements IConfigurationFeature<V> {
040  @NonNull
041  private final Class<V> valueClass;
042  @NonNull
043  private final V defaultValue;
044
045  /**
046   * Construct a new feature with a default value.
047   *
048   * @param valueClass
049   *          the class of the feature's value
050   * @param defaultValue
051   *          the value's default
052   */
053  protected AbstractConfigurationFeature(
054      @NonNull Class<V> valueClass,
055      @NonNull V defaultValue) {
056    this.valueClass = valueClass;
057    this.defaultValue = defaultValue;
058  }
059
060  @Override
061  public V getDefault() {
062    return defaultValue;
063  }
064
065  @Override
066  public Class<V> getValueClass() {
067    return valueClass;
068  }
069}