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Java > Open Source Codes > com > caucho > amber > entity > TableInvalidateCompletion


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free Software Foundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.amber.entity;
30
31 import com.caucho.amber.query.ResultSetCacheChunk;
32 import com.caucho.amber.type.EntityType;
33 import com.caucho.util.L10N;
34 import com.caucho.util.Log;
35
36 import java.util.logging.Logger JavaDoc;
37
38 /**
39  * Code to update the cache value on the completion of a transaction.
40  */
41 public class TableInvalidateCompletion extends AmberCompletion {
42   private static final L10N L = new L10N(TableInvalidateCompletion.class);
43   private static final Logger JavaDoc log = Log.open(TableInvalidateCompletion.class);
44
45   private String JavaDoc _table;
46
47   public TableInvalidateCompletion(String JavaDoc table)
48   {
49     if (table == null)
50       throw new NullPointerException JavaDoc();
51
52     _table = table;
53   }
54
55   /**
56    * Code when the transaction completes.
57    *
58    * @return true if the entry should be deleted.
59    */
60   public boolean complete(EntityType rootType,
61               Object JavaDoc key,
62               EntityItem entityItem)
63   {
64     if (rootType.getTable().getName().equals(_table)) {
65       entityItem.expire();
66     }
67     else {
68       entityItem.getEntity().__caucho_invalidate_foreign(_table, null);
69     }
70     
71     return false;
72   }
73
74   /**
75    * Code to invalidate the query.
76    *
77    * @return true if the entry should be deleted.
78    */
79   public boolean complete(ResultSetCacheChunk chunk)
80   {
81     return chunk.invalidate(_table, null);
82   }
83
84   /**
85    * Returns true for equality.
86    */
87   public boolean equals(Object JavaDoc o)
88   {
89     if (this == o)
90       return true;
91     else if (o == null || o.getClass() != getClass())
92       return false;
93
94     TableInvalidateCompletion comp = (TableInvalidateCompletion) o;
95
96     return _table.equals(comp._table);
97   }
98 }
99
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