我有一个内存数据库用于运行一些单元测试。我使用Spring ORM 3.2.1来启动这个内存数据库。 spring上下文是可通过使用Jersey 1.10实现的一些REST接口访问的Web应用程序的一部分。我的测试是作为JerseyTest实现的，因此弹簧应用程序上下文对实际的休息运行器是隐藏的。我现在的问题是在测试之间干净地关闭数据库，这样一个测试就不会看到前一个测试保存的数据。
我的旧实现仅使用JPA和HSQL：
if (factory != null && factory.isOpen()) {
EntityManager manager = factory.createEntityManager();
manager.getTransaction().begin();
manager.createNativeQuery("SHUTDOWN").executeUpdate();
manager.getTransaction().commit();
}
以确保删除所有内容。
如果我在Spring创建的数据库中执行相同操作，则会收到错误：
Internal Exception: java.sql.SQLNonTransientConnectionException: connection exception: closed
Error Code: -1353
Call: SHUTDOWN
Query: DataModifyQuery(sql="SHUTDOWN")
at org.eclipse.persistence.internal.jpa.QueryImpl.executeUpdate(QueryImpl.java:308)
at de.tudresden.inf.rn.intellix.tudix.HsqldbShutdownListener.contextDestroyed(HsqldbShutdownListener.java:45)
at org.glassfish.grizzly.servlet.ServletContextImpl.destroyListeners(ServletContextImpl.java:186)
at org.glassfish.grizzly.servlet.ServletHandler.destroy(ServletHandler.java:768)
at org.glassfish.grizzly.http.server.HttpHandlerChain.destroy(HttpHandlerChain.java:317)
at org.glassfish.grizzly.http.server.HttpServer.tearDownHttpHandler(HttpServer.java:303)
at org.glassfish.grizzly.http.server.HttpServer.stop(HttpServer.java:366)
at com.sun.jersey.test.framework.spi.container.grizzly2.web.GrizzlyWebTestContainerFactory$GrizzlyWebTestContainer.stop(GrizzlyWebTestContainerFactory.java:154)
at com.sun.jersey.test.framework.JerseyTest.tearDown(JerseyTest.java:316)
at de.tudresden.inf.rn.intellix.tudix.TudixInterfaceTest.tearDown(TudixInterfaceTest.java:127)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:622)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLNonTransientConnectionException: connection exception: closed
Error Code: -1353
Call: SHUTDOWN
Query: DataModifyQuery(sql="SHUTDOWN")
at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:340)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.processExceptionForCommError(DatabaseAccessor.java:1611)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:674)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:558)
at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:1991)
at org.eclipse.persistence.sessions.server.ClientSession.executeCall(ClientSession.java:298)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:242)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:228)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeNoSelectCall(DatasourceCallQueryMechanism.java:271)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeNoSelect(DatasourceCallQueryMechanism.java:251)
at org.eclipse.persistence.queries.DataModifyQuery.executeDatabaseQuery(DataModifyQuery.java:85)
at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:899)
at org.eclipse.persistence.queries.DatabaseQuery.executeInUnitOfWork(DatabaseQuery.java:798)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2896)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1793)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1775)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1740)
at org.eclipse.persistence.internal.jpa.QueryImpl.executeUpdate(QueryImpl.java:298)
... 32 more
Caused by: java.sql.SQLNonTransientConnectionException: connection exception: closed
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.<init>(Unknown Source)
at org.hsqldb.jdbc.JDBCConnection.prepareStatement(Unknown Source)
at org.apache.commons.dbcp.DelegatingConnection.prepareStatement(DelegatingConnection.java:281)
at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.prepareStatement(PoolingDataSource.java:313)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.prepareStatement(DatabaseAccessor.java:1556)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.prepareStatement(DatabaseAccessor.java:1505)
at org.eclipse.persistence.internal.databaseaccess.DatabaseCall.prepareStatement(DatabaseCall.java:778)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:619)
... 47 more
Caused by: org.hsqldb.HsqlException: connection exception: closed
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.Session.execute(Unknown Source)
... 55 more
似乎数据库已经关闭。但它肯定没有，因为我可以在下一个测试中看到前一个测试的数据。
数据库在application-context.xml中被定义为一个spring bean，如下所示：
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver">
</property>
<property name="url" value="jdbc:hsqldb:mem:db;sql.enforce_size=false;sql.enforce_strict_size=false"></property>
<property name="username" value="sa"></property>
<property name="password" value=""></property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="dataSource" ref="dataSource" />
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="persistenceUnitName" value="PU" />
<property name="jpaVendorAdapter">
<bean
class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="showSql" value="false" />
<property name="generateDdl" value="false" />
</bean>
</property>
<property name="jpaPropertyMap">
<map>
<entry key="eclipselink.weaving" value="false" />
<entry key="eclipselink.ddl-generation" value="create-tables" />
<entry key="eclipselink.ddl-generation.output-mode" value="database" />
<entry key="eclipselink.logging.level.sql" value="SEVERE" />
<entry key="eclipselink.logging.parameters" value="false" />
</map>
</property>
</bean>
以下是一个测试用例的最小示例：
public final class TudixInterfaceTest extends JerseyTest {
@Override
protected AppDescriptor configure() {
Map<String, String> initParams = new HashMap<String, String>();
initParams.put("com.sun.jersey.config.property.packages", "my.resource.package");
Builder builder = new WebAppDescriptor.Builder(initParams);
return builder.initParam("application-context", "application-context.xml").contextPath("/").build();
}
@Test
public void test() {
// Access REST interface, saving some stuff to the in memory database on server side.
// Assert the result on client side.
}
有人知道在这种情况下如何正确关闭HSQL内存数据库吗？