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Java > Open Source Codes > com > jcorporate > expresso > core > db > tests > DBConnectionPoolStressThread


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64
65 package com.jcorporate.expresso.core.db.tests;
66
67 import com.jcorporate.expresso.core.db.DBConnection;
68 import com.jcorporate.expresso.core.db.DBConnectionPool;
69 import com.jcorporate.expresso.core.db.DBException;
70 import com.jcorporate.expresso.core.db.exception.PoolFullException;
71 import com.jcorporate.expresso.services.test.TestSystemInitializer;
72
73 /**
74  * Unit test to stress the DBConnectionPool
75  *
76  * @author Michael Rimov
77  * @version $Revision: 1.2 $ on $Date: 2004/11/17 20:48:22 $
78  */
79
80 public class DBConnectionPoolStressThread extends java.lang.Thread JavaDoc {
81     protected String JavaDoc errorMessage = null;
82     int numPoolFulls = 0;
83
84
85     public DBConnectionPoolStressThread() {
86     }
87
88     public DBConnectionPoolStressThread(String JavaDoc threadName) {
89         super(threadName);
90     }
91
92     public String JavaDoc getErrors() {
93         return errorMessage;
94     }
95
96     public int getNumPoolFulls() {
97         return numPoolFulls;
98     }
99
100     public void run() {
101         try {
102             DBConnectionPool myPool = DBConnectionPool.getInstance(TestSystemInitializer.getTestContext());
103             /**@todo Override this java.lang.Thread method*/
104             for (int i = 0; i < DBConnectionPoolTest.NUM_ITERATIONS; i++) {
105                 if (!this.isInterrupted()) {
106                     try {
107                         DBConnection oneConnection = myPool.getConnection();
108                         if (oneConnection == null) {
109                             errorMessage = "Received null connection from the connection pool.";
110                         }
111                         synchronized (this) {
112                             try {
113                                 sleep(new java.util.Random JavaDoc().nextInt(50));
114                             } catch (InterruptedException JavaDoc ex) {
115                             }
116                         }
117                         oneConnection.release();
118 // myPool.release(oneConnection);
119 } catch (PoolFullException pfe) {
120                         numPoolFulls++;
121                         //We're ok, that's what we're trying to stress here.
122 }
123                 } else {
124                     numPoolFulls++;
125                     break;
126                 }
127             }
128         } catch (DBException ex) {
129             ex.printStackTrace();
130             errorMessage = ex.getMessage();
131             return;
132         }
133     }
134 }
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