Java Doc for PerformanceJdbcFailoverTest.java in  » Database-ORM » db-ojb » org » apache » ojb » compare » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.compare   Source Cross Reference   Class Diagram   Java Document (Java Doc)   org.apache.ojb.junit.PBTestCase    org.apache.ojb.compare.PerformanceJdbcFailoverTest PerformanceJdbcFailoverTest public class PerformanceJdbcFailoverTest extends PBTestCase (Code) This TestCase contains the OJB performance benchmarks for the JDBC API. The original testcases have been enhanced with code dealing with db failover situations. author:    Thomas Mahler Field Summary static  int articleCount      the number of PerformanceArticle objects to work with. static  int iterations      the number of iterations to perform. static  int maxRetries      the maximum number of retries if db fails. static  int maxWait      the maximum time to wait on db availability.  int offsetId      Constructor Summary public   PerformanceJdbcFailoverTest(String name)      BrokerTests constructor comment. Method Summary protected  void clearTable()      protected  void deleteArticles()      deletes all PerformanceArticle created by insertNewArticles. protected  void insertNewArticles()      create new PerformanceArticle objects and insert them into the RDBMS. public static  void main(String[] args)      launches the TestCase. protected  void readArticles()      read in all the PerformanceArticles from the RDBMS that have been inserted by insertNewArticles(). protected  void readArticlesByCursor()      read in all the PerformanceArticles from the RDBMS that have been inserted by insertNewArticles(). public  void setUp()      setting up the test fixture. public  void tearDown()      tearing down the test fixture. public  void testBenchmark()      this method is the driver for the complete Benchmark. It performs the following steps: 1.) n objects are created and inserted to the RDBMS. 2.) the created objects are modified. protected  void updateExistingArticles()      updates all PerformanceArticles inserted by insertNewArticles(). Field Detail articleCount static int articleCount(Code) the number of PerformanceArticle objects to work with. iterations static int iterations(Code) the number of iterations to perform. maxRetries static int maxRetries(Code) the maximum number of retries if db fails. maxWait static int maxWait(Code) the maximum time to wait on db availability. offsetId int offsetId(Code) the offset value for PerformanceArticle primary keys Constructor Detail PerformanceJdbcFailoverTest public PerformanceJdbcFailoverTest(String name)(Code) BrokerTests constructor comment. Parameters:   name - java.lang.String Method Detail clearTable protected void clearTable() throws Exception(Code) deleteArticles protected void deleteArticles() throws Exception(Code) deletes all PerformanceArticle created by insertNewArticles. insertNewArticles protected void insertNewArticles() throws Exception(Code) create new PerformanceArticle objects and insert them into the RDBMS. The number of objects to create is defined by articleCount. main public static void main(String[] args)(Code) launches the TestCase. The number of Objects to work with and the number of iterations to be performed can be adjusted by setting them as commandline parameters. Parameters:   args - the String[] holding the commandline parameters. readArticles protected void readArticles() throws Exception(Code) read in all the PerformanceArticles from the RDBMS that have been inserted by insertNewArticles(). The lookup is done one by one, that is: a primary key based lookup is used. readArticlesByCursor protected void readArticlesByCursor() throws Exception(Code) read in all the PerformanceArticles from the RDBMS that have been inserted by insertNewArticles(). The lookup is done with a cursor fetch, that is: a between Statement is used to select all inserted PerformanceArticles and Objects are read in by fetching from the cursor (JDBC ResultSet). setUp public void setUp() throws Exception(Code) setting up the test fixture. tearDown public void tearDown() throws Exception(Code) tearing down the test fixture. testBenchmark public void testBenchmark()(Code) this method is the driver for the complete Benchmark. It performs the following steps: 1.) n objects are created and inserted to the RDBMS. 2.) the created objects are modified. Modifications are written to the RDBMS with updates. 3.) All objects created in 1.) are read in by primary key based SELECT statements. 4.) Step 3.) is repeated to test caching facilities. 5.) All objects created in 1.) are read by iterating over a ResultSet. 6.) All objects created in 1.) are deleted with n separate DELETE Statements. updateExistingArticles protected void updateExistingArticles() throws Exception(Code) updates all PerformanceArticles inserted by insertNewArticles(). All objects are modified and changes are written to the RDBMS with an UPDATE. Fields inherited from org.apache.ojb.junit.PBTestCase public PersistenceBroker broker(Code)(Java Doc) Methods inherited from org.apache.ojb.junit.PBTestCase public String getPlatformClass()(Code)(Java Doc) public void pbPersist(Object obj)(Code)(Java Doc) public void setUp() throws Exception(Code)(Java Doc) public void tearDown() throws Exception(Code)(Java Doc)