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1   /*
2    * File:    AbstractDataView.java
3    * Created: 12.4.2007 9:31:24
4    *
5    * Copyright 2007 Michal Burda.
6    *
7    * This program is free software; you can redistribute it and/or modify
8    * it under the terms of the GNU General Public License as published by
9    * the Free Software Foundation; either version 2 of the License, or
10   * (at your option) any later version.
11   *
12   * This program is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   * GNU General Public License for more details.
16   *
17   * You should have received a copy of the GNU General Public License
18   * along with this program; if not, write to the Free Software
19   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
20   */
21  
22  package net.sf.webmancer.widget;
23  
24  import net.sf.webmancer.db.IQuery;
25  import net.sf.webmancer.db.IRestrictable;
26  import net.sf.webmancer.db.IRestrictor;
27  import net.sf.webmancer.db.RestrictionType;
28  import net.sf.webmancer.util.ContractChecker;
29  
30  /**
31   * @author Michal Burda
32   *
33   */
34  public abstract class AbstractDataView extends AbstractWidget implements IRestrictor {
35      /**
36       * 
37       */
38      private IQuery query;
39  
40      /**
41       * Constructs the AbstractDataView.
42       *
43       * @param query
44       */
45      public AbstractDataView() {
46          super();
47          this.query = null;
48      }
49      
50      /**
51       * Sets the query.
52       *
53       * @param query the query to set
54       */
55      public void setQuery(IQuery query) {
56          ContractChecker.mustNotBeNull(query, "query");
57          this.query = query;
58          this.query.registerRestrictor(this);
59      }
60  
61      /**
62       * @return
63       */
64      protected IQuery getQuery() {
65          return this.query;
66      }
67      
68      /**
69       * @see net.sf.webmancer.db.IRestrictor#restrict(net.sf.webmancer.db.IRestrictable, net.sf.webmancer.db.RestrictionType)
70       */
71      public abstract void restrict(IRestrictable query, RestrictionType restriction);
72  }