CommentHome


1   package edu.rice.rubis.beans;
2   
3   import java.rmi.RemoteException  ;
4   import java.util.Collection  ;
5   import javax.ejb.CreateException  ;
6   import javax.ejb.EJBHome  ;
7   import javax.ejb.FinderException  ;
8   import javax.ejb.RemoveException  ;
9   
10  /** This is the Home interface of the Comment Bean */
11  
12  public interface CommentHome extends EJBHome   {
13    /**
14     * This method is used to create a new Comment Bean. 
15     * The date is automatically set to the current date when the method is called.
16     *
17     * @param FromUserId user id of the comment author, must match the primary key of table users
18     * @param ToUserId user id of the user this comment is about, must match the primary key of table users
19     * @param ItemId item id, must match the primary key of table items
20     * @param Rating user (ToUserId) rating given by the author (FromUserId)
21     * @param Comment comment text
22     *
23     * @return pk primary key set to null
24     */
25    public Comment create(Integer   FromUserId, Integer   ToUserId, Integer   ItemId, int Rating, String   Comment) throws CreateException  , RemoteException  , RemoveException  ;
26  
27    /**
28     * This method is used to retrieve a Comment Bean from its primary key,
29     * that is to say its id.
30     *
31     * @param id Comment id (primary key)
32     *
33     * @return the Comment if found else null
34     */
35    public Comment findByPrimaryKey(CommentPK id) throws FinderException  , RemoteException  ;
36  
37    /**
38     * This method is used to retrieve all Comment Beans related to one item.
39     * You must provide the item id.
40     *
41     * @param id item id
42     *
43     * @return List of Comments found (eventually empty)
44     */
45    public Collection   findByItem(Integer   id) throws FinderException  , RemoteException  ;
46  
47    /**
48     * This method is used to retrieve all Comment Beans belonging to
49     * a specific author. You must provide the author user id.
50     *
51     * @param id user id
52     *
53     * @return List of Comments found (eventually empty)
54     */
55    public Collection   findByFromUser(Integer   id) throws FinderException  , RemoteException  ;
56  
57    /**
58     * This method is used to retrieve all Comment Beans related to
59     * a specific user. You must provide the user id.
60     *
61     * @param id user id
62     *
63     * @return List of Comments found (eventually empty)
64     */
65    public Collection   findByToUser(Integer   id) throws FinderException  , RemoteException  ;
66  
67    /**
68     * This method is used to retrieve all comments from the database!
69     *
70     * @return List of all comments (eventually empty)
71     */
72    public Collection   findAllComments() throws RemoteException  , FinderException  ;
73  }
74
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