DatabaseUtil


1   /*-
2    * See the file LICENSE for redistribution information.
3    *
4    * Copyright (c) 2002,2006 Oracle.  All rights reserved.
5    *
6    * $Id: DatabaseUtil.java,v 1.33 2006/10/30 21:14:12 bostic Exp $
7    */
8   
9   package com.sleepycat.je;
10  
11  /**
12   * Utils for use in the db package.
13   */
14  class DatabaseUtil {
15  
16      /**
17       * Throw an exception if the parameter is null.
18       */
19      static void checkForNullParam(Object   param, String   name) {
20          if (param == null) {
21              throw new NullPointerException  (name + " cannot be null");
22          }
23      }
24  
25      /**
26       * Throw an exception if the dbt is null or the data field is not set.
27       */
28      static void checkForNullDbt(DatabaseEntry dbt,
29                  String   name,
30                  boolean checkData) {
31          if (dbt == null) {
32              throw new NullPointerException  
33          ("DatabaseEntry " + name + " cannot be null");
34          }
35  
36          if (checkData) {
37              if (dbt.getData() == null) {
38                  throw new NullPointerException  
39              ("Data field for DatabaseEntry " +
40               name + " cannot be null");
41              }
42          }
43      }
44  
45      /**
46       * Throw an exception if the key dbt has the partial flag set.  This method
47       * should be called for all put() operations.
48       */
49      static void checkForPartialKey(DatabaseEntry dbt) {
50          if (dbt.getPartial()) {
51              throw new IllegalArgumentException  
52          ("A partial key DatabaseEntry is not allowed");
53          }
54      }
55  }
56
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags