Checker


1   package de.webman.acl.resolver;
2   
3   import com.teamkonzept.lib.TKException;
4   
5   /**
6    * Interface for access right checkers.
7    *
8    * @version 1.0
9    * @since 1.0
10   * @author &copy; 2001 Webman AG
11   */
12  public interface Checker
13      extends Resolver
14  {
15  
16      // $Header: /cvsroot/webman-cms/source/webman/de/webman/acl/resolver/Checker.java,v 1.1 2001/08/20 08:25:09 mischa Exp $
17  
18      // Method signatures
19  
20      /**
21       * This method is provided to check if a particular event is permitted
22       * for a login (user or group) in the current application state. The
23       * application state is determined by the context, an object type and an
24       * object reference.
25       * <P>
26       * If the optional arguments are omitted, only the context-wide
27       * access rights are checked, otherwise the context-wide as well
28       * as the object-specific access rights are checked. If no applicable
29       * access rights were found, the event is considered to be not permitted.
30       *
31       * @param event the ID if the event to be checked (<I>required</I>).
32       * @param context the ID if the current context (<I>required</I>).
33       * @param type the current object type (<I>optional</I>).
34       * @param reference the current object reference (<I>optional</I>).
35       * @return <CODE>true</CODE> if the event is permitted explicitely,
36       * otherwise <CODE>false</CODE>.
37       * @exception com.teamkonzept.lib.TKException if an error occured during
38       * access right checking.
39       */
40      boolean check (Integer   event,
41                                     Integer   context,
42                                     Integer   type,
43                                     Integer   reference)
44          throws TKException;
45  
46  }
47
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