CacheUsage


1   /*
2    * The contents of this file are subject to the terms 
3    * of the Common Development and Distribution License 
4    * (the "License").  You may not use this file except 
5    * in compliance with the License.
6    * 
7    * You can obtain a copy of the license at 
8    * glassfish/bootstrap/legal/CDDLv1.0.txt or 
9    * https://glassfish.dev.java.net/public/CDDLv1.0.html. 
10   * See the License for the specific language governing 
11   * permissions and limitations under the License.
12   * 
13   * When distributing Covered Code, include this CDDL 
14   * HEADER in each file and include the License file at 
15   * glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable, 
16   * add the following below this CDDL HEADER, with the 
17   * fields enclosed by brackets "[]" replaced with your 
18   * own identifying information: Portions Copyright [yyyy] 
19   * [name of copyright owner]
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21  // Copyright (c) 1998, 2006, Oracle. All rights reserved.  
22  package oracle.toplink.essentials.config;
23  
24  /**
25   * Cache usage hint values.
26   * 
27   * The class contains all the valid values for TopLinkQueryHints.CACHE_USAGE query hint.
28   * 
29   * JPA Query Hint Usage:
30   * 
31   * query.setHint(TopLinkQueryHints.CACHE_USAGE, CacheUsage.CheckCacheOnly);
32   * or 
33   * @QueryHint(name=TopLinkQueryHints.CACHE_USAGE, value=CacheUsage.CheckCacheOnly)
34   * 
35   * Hint values are case-insensitive.
36   * "" could be used instead of default value CacheUsage.DEFAULT.
37   * 
38   * @see TopLinkQueryHints
39   */
40  public class CacheUsage {
41      public static final String    UseEntityDefault = "UseEntityDefault";
42      public static final String    DoNotCheckCache = "DoNotCheckCache";
43      public static final String    CheckCacheByExactPrimaryKey = "CheckCacheByExactPrimaryKey";
44      public static final String    CheckCacheByPrimaryKey = "CheckCacheByPrimaryKey";
45      public static final String    CheckCacheThenDatabase = "CheckCacheThenDatabase";
46      public static final String    CheckCacheOnly = "CheckCacheOnly";
47      public static final String    ConformResultsInUnitOfWork = "ConformResultsInUnitOfWork";
48   
49      public static final String   DEFAULT = UseEntityDefault;
50  }
51
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