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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package javax.jdo.annotations;
18  
19  /**
20   * Enumeration of the "null-value" behavior values.
21   * This corresponds to the "null-value" attribute of the "field"
22   * and "property" elements.
23   *
24   * @version 2.1
25   * @since 2.1
26   */
27  public enum NullValue
28  {
29      NONE,
30      EXCEPTION,
31      DEFAULT
32  }