Version


1   package org.apache.beehive.controls.api.versioning;
2   /*
3    * Copyright 2004 The Apache Software Foundation.
4    *
5    * Licensed under the Apache License, Version 2.0 (the "License");
6    * you may not use this file except in compliance with the License.
7    * 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   * $Header:$
18   */
19  
20  import java.lang.annotation.ElementType  ;
21  import java.lang.annotation.Retention  ;
22  import java.lang.annotation.RetentionPolicy  ;
23  import java.lang.annotation.Target  ;
24  
25  /**
26   * Used by the control author to specify the version (major.minor) of the control interface.
27   * Allowed on interfaces annotated with @ControlInterface.  This version number
28   * is the basis for control versioning, and versioning constraints against it are enforced both at
29   * compile time and runtime.
30   */
31  @Retention  (RetentionPolicy.RUNTIME)
32  @Target  ({ElementType.TYPE})
33  public @interface Version
34  {
35      /**
36       * Major version number, typically used to track significant functionality changes.
37       */
38      int major(); 
39      /**
40       * Minor version number, typically used to track small internal changes/fixes.  Version
41       * constraints default to ignoring the minor version number in their comparisons, but may
42       * be configured to specify a particular minor version.
43       */
44      int minor() default 0;
45  }
46

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