EntityBean


1   /*
2    * JOnAS: Java(TM) Open Application Server
3    * Copyright (C) 1999 Bull S.A.
4    * Contact: jonas-team@objectweb.org
5    * 
6    * This library is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU Lesser General Public
8    * License as published by the Free Software Foundation; either
9    * version 2.1 of the License, or any later version.
10   * 
11   * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   * Lesser General Public License for more details.
15   * 
16   * You should have received a copy of the GNU Lesser General Public
17   * License along with this library; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
19   * USA
20   *
21   * --------------------------------------------------------------------------
22   * $Id: EntityBean.java,v 1.4 2004/12/01 13:35:34 durieuxp Exp $
23   * --------------------------------------------------------------------------
24   */
25  
26  package org.objectweb.jonas.container;
27  
28  import org.objectweb.jonas_ejb.container.EntityCounters;
29  import org.objectweb.jonas_ejb.container.JEntityFactory;
30  import org.objectweb.jonas_ejb.deployment.api.EntityDesc;
31  
32  /**
33   * This class implements the EntityBean type specified in JSR77
34   * @author Adriana Danes
35   *
36   */
37  public class EntityBean extends EJB {
38  
39      // lock policy
40      private static final int LOCK_CONTAINER_READ_UNCOMMITTED = EntityDesc.LOCK_CONTAINER_READ_UNCOMMITTED;
41      private static final int LOCK_CONTAINER_SERIALIZED = EntityDesc.LOCK_CONTAINER_SERIALIZED;
42      private static final int LOCK_CONTAINER_READ_COMMITTED = EntityDesc.LOCK_CONTAINER_READ_COMMITTED;
43      private static final int LOCK_DATABASE = EntityDesc.LOCK_DATABASE;
44      private static final int LOCK_READ_ONLY = EntityDesc.LOCK_READ_ONLY;
45  
46      private String   persistency;
47  
48      public EntityBean(String   objectName, JEntityFactory factoryToManage, String   persistency) {
49          super(objectName, factoryToManage);
50          this.persistency = persistency;
51      }
52  
53      /**
54       * get persistency type
55       */
56      public String   getPersistency() {
57          return persistency;
58      }
59  
60      /**
61       * get passivation time out
62       * @return passivation timeout in seconds
63       */
64      public int getPassivationTimeOut() {
65          return ejbToManage.getContainer().getSwapTime();
66      }
67  
68      /**
69       * set passivation time out
70       * @param timeOut passivation timeout in seconds
71       */
72      public void setPassivationTimeOut(int timeOut) {
73          ejbToManage.getContainer().setSwapTime(timeOut);
74      }
75  
76      /**
77       * get inactivity time out
78       * @return inactivity timeout in seconds
79       */
80      public int getInactivityTimeOut() {
81          return ((JEntityFactory) ejbToManage).getInactivityTimeout();
82      }
83  
84      /**
85       * @return true if bean is shared
86       */
87      public boolean getShared() {
88          return ((JEntityFactory) ejbToManage).isShared();
89      }
90  
91      /**
92       * @return min-pool-size value
93       */
94      public int getMinPoolSize() {
95          return ((JEntityFactory) ejbToManage).getMinPoolSize();
96      }
97  
98      /**
99       * @return max-cache-size value
100      */
101     public int getMaxCacheSize() {
102         return ((JEntityFactory) ejbToManage).getMaxCacheSize();
103     }
104 
105     /**
106      * @return pool-size value
107      */
108     public int getPoolSize() {
109         return ((JEntityFactory) ejbToManage).getPoolSize();
110     }
111 
112     /**
113      * @return EJB Container lock policy
114      */
115     public String   getLockPolicy() {
116         int lockPolicy = ((JEntityFactory) ejbToManage).lockPolicy();
117         String   sLockPolicy = null;
118         switch (lockPolicy) {
119             case LOCK_CONTAINER_READ_UNCOMMITTED:
120                 sLockPolicy = "container-read-uncommitted";
121                 break;
122             case LOCK_CONTAINER_SERIALIZED:
123                 sLockPolicy = "container-serialized";
124                 break;
125             case LOCK_CONTAINER_READ_COMMITTED:
126                 sLockPolicy = "container-read-committed";
127                 break;
128             case LOCK_DATABASE:
129                 sLockPolicy = "database";
130                 break;
131             case LOCK_READ_ONLY:
132                 sLockPolicy = "read-only";
133                 break;
134         }
135         return sLockPolicy;
136     }
137 
138     public boolean getPrefetch() {
139         return ((JEntityFactory) ejbToManage).isPrefetch();
140     }
141     /**
142      * @return Cache Size value
143      */
144     public int getCacheSize() {
145         return ((JEntityFactory) ejbToManage).getCacheSize();
146     }
147 
148     /**
149      * Instance Counters (inTx, outTx, idle, passive, removed)
150      * @return table of int values for Entity counters
151      */
152     public Integer  [] getEntityCounters() {
153         EntityCounters ec = ((JEntityFactory) ejbToManage).getEntityCounters();
154         Integer  [] result = new Integer  [5];
155         result[0] = new Integer  (ec.inTx);
156         result[1] = new Integer  (ec.outTx);
157         result[2] = new Integer  (ec.idle);
158         result[3] = new Integer  (ec.passive);
159         result[4] = new Integer  (ec.removed);
160         return result;
161     }
162 
163     /**
164      * Synchronize bean state for all its instances outside transactions
165      */
166     public void synchronize() {
167         ((JEntityFactory) ejbToManage).sync();
168     }
169 
170     /**
171      * Reduce number of instances in memory 
172      */
173     public void reduceCache() {
174         ((JEntityFactory) ejbToManage).reduceCache();
175     }
176 }
177
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