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1   /*
2    * Copyright (c) 2002-2014, Mairie de Paris
3    * All rights reserved.
4    *
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions
7    * are met:
8    *
9    *  1. Redistributions of source code must retain the above copyright notice
10   *     and the following disclaimer.
11   *
12   *  2. Redistributions in binary form must reproduce the above copyright notice
13   *     and the following disclaimer in the documentation and/or other materials
14   *     provided with the distribution.
15   *
16   *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17   *     contributors may be used to endorse or promote products derived from
18   *     this software without specific prior written permission.
19   *
20   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30   * POSSIBILITY OF SUCH DAMAGE.
31   *
32   * License 1.0
33   */
34  package fr.paris.lutece.portal.business.prefs;
35  
36  import java.util.List;
37  
38  
39  /**
40   * Preferences DAO interface
41   */
42  public interface IPreferencesDAO
43  {
44      /**
45       * Get a preference for a given user
46       * @param strUserId The user's ID
47       * @param strKey The preference's key
48       * @param strDefault The default value
49       * @return The preference's value
50       */
51      String load( String strUserId, String strKey, String strDefault );
52  
53      /**
54       * Get the list of user id associated with the given key and value
55       * @param strKey The preference's key
56       * @param strValue The preference's value
57       * @return The list of user id associated with the given key and value. If
58       *         there is no user id associated with the parameters, then an empty
59       *         list is returned
60       */
61      List<String> getUserId( String strKey, String strValue );
62  
63      /**
64       * Store a preference for a given user
65       * @param strUserId The user's ID
66       * @param strKey The preference's key
67       * @param strValue The value
68       */
69      void store( String strUserId, String strKey, String strValue );
70  
71      /**
72       * Get all preference keys for a given user
73       * @param strUserId The user's ID
74       * @return The keys
75       */
76      List<String> keys( String strUserId );
77  
78      /**
79       * Clear all preferences for a given user
80       * @param strUserId The user's ID
81       */
82      void remove( String strUserId );
83  
84      /**
85       * Clear all preferences for a given user
86       * @param strUserId The user's ID
87       * @param strKey The preference's key
88       */
89      void removeKey( String strUserId, String strKey );
90  
91      /**
92       * Clear all preferences for a given user
93       * @param strUserId The user's ID
94       * @param strKeyPrefix The key prefix
95       */
96      void removeKeyPrefix( String strUserId, String strKeyPrefix );
97  
98      /**
99       * Cheks if a preference key exists
100      * @param strUserId The User ID
101      * @param strKey The Pref key
102      * @return 1 if exists otherwise false
103      */
104     boolean existsKey( String strUserId, String strKey );
105     
106     /**
107      * Checks if a value is already used for a preference given key 
108      * @param strKey The Pref key
109      * @param strValue The Pref value
110      * @return 1 if exists otherwise false
111      */
112     boolean existsValueForKey( String strKey,String strValue );
113     
114     
115 }