[GitHub] [incubator-shardingsphere] software-market edited a comment on issue #3854: ‘NullPointerException’ when getting database index

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software-market edited a comment on issue #3854: ‘NullPointerException’ when getting database index
URL: https://github.com/apache/incubator-shardingsphere/issues/3854#issuecomment-571893396
 
 
   This exception is thrown when hibernate is initialized . If I remove the ‘<property name="hibernate.hbm2ddl.auto">update</property>’ exception in the configuration, it will not appear. 
   @tristaZero 
   resultSet.getString(i)
   @KomachiSion 
   exception stack information.
   
   ```
   {INFO } [2020-01-08 13:03:25,986] <org.hibernate.tool.hbm2ddl.SchemaUpdate> : updating schema
   {ERROR} [2020-01-08 13:03:39,758] <org.hibernate.tool.hbm2ddl.SchemaUpdate> : could not complete schema update
   java.lang.NullPointerException
   	at org.apache.shardingsphere.shardingjdbc.jdbc.core.resultset.DatabaseMetaDataResultSet.generateDatabaseMetaDataObject(DatabaseMetaDataResultSet.java:109)
   	at org.apache.shardingsphere.shardingjdbc.jdbc.core.resultset.DatabaseMetaDataResultSet.initIterator(DatabaseMetaDataResultSet.java:90)
   	at org.apache.shardingsphere.shardingjdbc.jdbc.core.resultset.DatabaseMetaDataResultSet.<init>(DatabaseMetaDataResultSet.java:73)
   	at org.apache.shardingsphere.shardingjdbc.jdbc.core.datasource.metadata.ResultSetReturnedDatabaseMetaData.getIndexInfo(ResultSetReturnedDatabaseMetaData.java:212)
   	at org.hibernate.tool.hbm2ddl.TableMetadata.initIndexes(TableMetadata.java:153)
   	at org.hibernate.tool.hbm2ddl.TableMetadata.<init>(TableMetadata.java:58)
   	at org.hibernate.tool.hbm2ddl.DatabaseMetadata.getTableMetadata(DatabaseMetadata.java:113)
   	at org.hibernate.cfg.Configuration.generateSchemaUpdateScript(Configuration.java:981)
   	at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:187)
   	at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:346)
   	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1327)
   	at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
   	at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:814)
   	at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:732)
   	at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
   	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
   	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
   	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
   	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
   	at java.security.AccessController.doPrivileged(Native Method)
   	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
   	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
   	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
   	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
   	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
   	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
   	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:423)
   	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
   	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
   	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
   	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
   	at com.xxx.server.service.ServiceManager.start(ServiceManager.java:60)
   	at com.xxx.server.service.ServiceManager.<init>(ServiceManager.java:52)
   	at com.weiguanai.server.service.ServiceManager.getInstance(ServiceManager.java:38)
   	at com.xxx.server.service.ServiceLocator.getTestService(ServiceLocator.java:87)
   	at com.xxx.server.test.Test.doPost(Test.java:31)
   	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
   	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
   	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
   	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
   	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:165)
   	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
   	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
   	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
   	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
   	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1195)
   	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:654)
   	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:317)
   	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   	at java.lang.Thread.run(Thread.java:745)
   ```

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