介绍了hibernate的入门有一些基本常用的事例

				//$Id: TestCase.java,v 1.18 2005/02/23 05:22:50 oneovthafew Exp $				package org.hibernate.test;								import java.sql.Blob;				import java.sql.Clob;				import java.util.Iterator;				import java.util.Properties;								import org.hibernate.HibernateException;				import org.hibernate.Interceptor;				import org.hibernate.SessionFactory;				import org.hibernate.cfg.Configuration;				import org.hibernate.cfg.Environment;				import org.hibernate.dialect.Dialect;				import org.hibernate.engine.SessionFactoryImplementor;				import org.hibernate.mapping.Collection;				import org.hibernate.mapping.PersistentClass;				import org.hibernate.mapping.Property;				import org.hibernate.mapping.SimpleValue;								public abstract class TestCase extends junit.framework.TestCase {									private static SessionFactory sessions;					private static Configuration cfg;					private static Dialect dialect;					private static Class lastTestClass;					private org.hibernate.classic.Session session;									protected boolean recreateSchema() {						return true;					}									public TestCase(String x) {						super(x);					}										protected void configure(Configuration cfg) {}									private void buildSessionFactory(String[] files) throws Exception {										if ( getSessions()!=null ) getSessions().close();										try {											setCfg( new Configuration() );														cfg.addProperties( getExtraProperties() );											if( recreateSchema() ) {								cfg.setProperty(Environment.HBM2DDL_AUTO, "create-drop");							}											for (int i=0; i								if ( !files[i].startsWith("net/") ) files[i] = getBaseForMappings() + files[i];								getCfg().addResource( files[i], TestCase.class.getClassLoader() );							}											setDialect( Dialect.getDialect() );											configure(cfg);											if ( getCacheConcurrencyStrategy()!=null ) {												Iterator iter = cfg.getClassMappings();								while ( iter.hasNext() ) {									PersistentClass clazz = (PersistentClass) iter.next();									Iterator props = clazz.getPropertyClosureIterator();									boolean hasLob = false;									while ( props.hasNext() ) {										Property prop = (Property) props.next();										if ( prop.getValue().isSimpleValue() ) {											String type = ( (SimpleValue) prop.getValue() ).getTypeName();											if ( "blob".equals(type) || "clob".equals(type) ) hasLob = true;											if ( Blob.class.getName().equals(type) || Clob.class.getName().equals(type) ) hasLob = true;										}									}									if ( !hasLob && !clazz.isInherited() ) {										cfg.setCacheConcurrencyStrategy(												clazz.getEntityName(),												getCacheConcurrencyStrategy()										);									}								}												iter = cfg.getCollectionMappings();								while ( iter.hasNext() ) {									Collection coll = (Collection) iter.next();									cfg.setCollectionCacheConcurrencyStrategy(											coll.getRole(),											getCacheConcurrencyStrategy()									);								}											}											setSessions( getCfg().buildSessionFactory( /*new TestInterceptor()*/ ) );										}						catch (Exception e) {							e.printStackTrace();							throw e;						}									}									/**					 * @return					 */					protected String getBaseForMappings() {						return "org/hibernate/test/";					}									public String getCacheConcurrencyStrategy() {						return "nonstrict-read-write";					}									protected void setUp() throws Exception {						if ( getSessions()==null || lastTestClass!=getClass() ) {							buildSessionFactory( getMappings() );							lastTestClass = getClass();						}					}									protected void runTest() throws Throwable {						final boolean stats = ( (SessionFactoryImplementor) sessions ).getStatistics().isStatisticsEnabled();						try {							if (stats) sessions.getStatistics().clear();											super.runTest();											if (stats) sessions.getStatistics().logSummary();											if ( session!=null && session.isOpen() ) {								if ( session.isConnected() ) session.connection().rollback();								session.close();								session = null;								fail("unclosed session");							}							else {								session=null;							}						}						catch (Throwable e) {							try {								if ( session!=null && session.isOpen() ) {									if ( session.isConnected() ) session.connection().rollback();									session.close();								}							}							catch (Exception ignore) {}							try {								if ( dropAfterFailure() && sessions!=null ) {									sessions.close();									sessions=null;								}							}							catch (Exception ignore) {}							throw e;						}					}										protected boolean dropAfterFailure() {						return true;					}									public org.hibernate.classic.Session openSession() throws HibernateException {						session = getSessions().openSession();						return session;					}									public org.hibernate.classic.Session openSession(Interceptor interceptor)					throws HibernateException {						session = getSessions().openSession(interceptor);						return session;					}									protected abstract String[] getMappings();									private void setSessions(SessionFactory sessions) {						TestCase.sessions = sessions;					}									protected SessionFactory getSessions() {						return sessions;					}									private void setDialect(Dialect dialect) {						TestCase.dialect = dialect;					}									protected Dialect getDialect() {						return dialect;					}									protected static void setCfg(Configuration cfg) {						TestCase.cfg = cfg;					}									protected static Configuration getCfg() {						return cfg;					}										/**					 * @deprecated					 */					public Properties getExtraProperties() {						return new Properties();					}								}