Question

因此，当Oracle数据库抛出SQL异常时，EntityManager关闭事务会出现问题。

Caused by: java.sql.SQLException: ORA-01722: invalid number

我在数据库中有一组SQL数据验证规则，我在下面的代码中附加到我的SQL查询中。查询比根据EAV（实体，属性，值）数据库表在数据库上运行这些规则。

数据规则的一个示例。

t1.attribute_name = 'ATTRIBUTE_NAME' and (cast(t1.value as number) < 1 or cast(t1.value as number) > 2)

现在因为该表是EAV基表，我们使用的所有数据都是String格式，但是如果比较数字比较是基于String而不是数字完成的。这不是我们想要的，所以我们将数字转换成正确的比较。然而，如果EAV表中的数据不是数字，则会导致问题，例如12A（这是完全有效的，因为还有其他数据）执行检查以通知用户该无效数据类型情况。）因为查询失败，我们在上面提到了例外。

现在查询失败是很好的原因，显然，我们无法运行它，因为它试图对它无法做的数据做一些事情。但是，因为有一个需要运行的规则的集合，我想在检测到一个失败之后继续运行规则。那就是问题所在发生。

当规则查询失败并被异常处理程序捕获时，我无法继续使用注入bean的实体管理器因为交易已经结束。

我试图在catch块中获得一个新的实体管理器但是我没有太多运气。我尝试获取EntityManagerFactory并创建从那里获得一个新的EntityManager，但是当我获得会话工厂时，它会声明以下内容，

11:24:13,800 INFO  [TransactionFactoryFactory] Transaction strategy: org.hibernate.ejb.transaction.JoinableCMTTransactionFactory
11:24:13,801 INFO  [TransactionManagerLookupFactory] instantiating TransactionManagerLookup: org.hibernate.transaction.JBossTransactionManagerLookup
11:24:13,801 INFO  [TransactionManagerLookupFactory] instantiated TransactionManagerLookup
11:24:13,801 INFO  [SettingsFactory] Automatic flush during beforeCompletion(): disabled
11:24:13,801 INFO  [SettingsFactory] Automatic session close at end of transaction: disabled
11:24:13,801 INFO  [SettingsFactory] JDBC batch size: 15
11:24:13,801 INFO  [SettingsFactory] JDBC batch updates for versioned data: disabled
11:24:13,802 INFO  [SettingsFactory] Scrollable result sets: enabled
11:24:13,802 INFO  [SettingsFactory] JDBC3 getGeneratedKeys(): disabled
11:24:13,802 INFO  [SettingsFactory] Connection release mode: auto
11:24:13,802 INFO  [SettingsFactory] Default schema: SCHEMA_NAME
11:24:13,802 INFO  [SettingsFactory] Default batch fetch size: 1
11:24:13,802 INFO  [SettingsFactory] Generate SQL with comments: disabled
11:24:13,802 INFO  [SettingsFactory] Order SQL updates by primary key: disabled
11:24:13,802 INFO  [SettingsFactory] Order SQL inserts for batching: disabled
11:24:13,802 INFO  [SettingsFactory] Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
11:24:13,802 INFO  [ASTQueryTranslatorFactory] Using ASTQueryTranslatorFactory
11:24:13,802 INFO  [SettingsFactory] Query language substitutions: {}
11:24:13,802 INFO  [SettingsFactory] JPA-QL strict compliance: enabled
11:24:13,802 INFO  [SettingsFactory] Second-level cache: enabled
11:24:13,802 INFO  [SettingsFactory] Query cache: disabled
11:24:13,802 INFO  [SettingsFactory] Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory
11:24:13,803 INFO  [SettingsFactory] Optimize cache for minimal puts: disabled
11:24:13,803 INFO  [SettingsFactory] Structured second-level cache entries: disabled
11:24:13,803 INFO  [SettingsFactory] Statistics: disabled
11:24:13,803 INFO  [SettingsFactory] Deleted entity synthetic identifier rollback: disabled
11:24:13,803 INFO  [SettingsFactory] Default entity-mode: pojo
11:24:13,803 INFO  [SettingsFactory] Named query checking : enabled
11:24:13,813 INFO  [SessionFactoryImpl] building session factory
11:24:13,813 INFO  [SessionFactoryObjectFactory] Not binding factory to JNDI, no JNDI name configured
11:24:13,813 INFO  [SchemaValidator] Running schema validator
11:24:13,813 INFO  [SchemaValidator] fetching database metadata
11:24:14,156 INFO  [NamingHelper] JNDI InitialContext properties:{}

但是当我尝试运行查询时，一旦我从工厂创建了新的EntityManager，我就会得到以下异常。

11:25:11,128 ERROR [STDERR] javax.persistence.PersistenceException: org.hibernate.MappingException: Unknown entity: org.myprogram.entity.MisCollVariableValue
11:25:11,129 ERROR [STDERR]     at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614)
11:25:11,129 ERROR [STDERR]     at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:76)
11:25:11,129 ERROR [STDERR]     at org.myprogram.dataloader.DataValidator.validateInputRules(DataValidator.java:444)
11:25:11,129 ERROR [STDERR]     at org.myprogram.dataloader.DataValidator.methodThatCallsThePrivateOne(DataValidator.java:124)
11:25:11,129 ERROR [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
11:25:11,129 ERROR [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
11:25:11,129 ERROR [STDERR]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
11:25:11,129 ERROR [STDERR]     at java.lang.reflect.Method.invoke(Unknown Source)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185)
11:25:11,129 ERROR [STDERR]     at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103)
11:25:11,129 ERROR [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
11:25:11,130 ERROR [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
11:25:11,130 ERROR [STDERR]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
11:25:11,130 ERROR [STDERR]     at java.lang.reflect.Method.invoke(Unknown Source)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185)
11:25:11,130 ERROR [STDERR]     at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103)
11:25:11,130 ERROR [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
11:25:11,130 ERROR [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
11:25:11,130 ERROR [STDERR]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
11:25:11,130 ERROR [STDERR]     at java.lang.reflect.Method.invoke(Unknown Source)
11:25:11,130 ERROR [STDERR]     at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335)
11:25:11,130 ERROR [STDERR]     at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:348)
11:25:11,130 ERROR [STDERR]     at org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)
11:25:11,130 ERROR [STDERR]     at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
11:25:11,130 ERROR [STDERR]     at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
11:25:11,130 ERROR [STDERR]     at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
11:25:11,130 ERROR [STDERR]     at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
11:25:11,130 ERROR [STDERR]     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
11:25:11,131 ERROR [STDERR]     at javax.faces.component.UICommand.broadcast(UICommand.java:387)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.component.UIDataAdaptor.broadcast(UIDataAdaptor.java:1364)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:296)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:466)
11:25:11,131 ERROR [STDERR]     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
11:25:11,131 ERROR [STDERR]     at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
11:25:11,131 ERROR [STDERR]     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
11:25:11,131 ERROR [STDERR]     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
11:25:11,131 ERROR [STDERR]     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
11:25:11,131 ERROR [STDERR]     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
11:25:11,131 ERROR [STDERR]     at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
11:25:11,131 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
11:25:11,132 ERROR [STDERR]     at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
11:25:11,132 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
11:25:11,133 ERROR [STDERR]     at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
11:25:11,133 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
11:25:11,133 ERROR [STDERR]     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
11:25:11,133 ERROR [STDERR]     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
11:25:11,133 ERROR [STDERR]     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
11:25:11,133 ERROR [STDERR]     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
11:25:11,133 ERROR [STDERR]     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
11:25:11,134 ERROR [STDERR]     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
11:25:11,134 ERROR [STDERR]     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
11:25:11,134 ERROR [STDERR]     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
11:25:11,134 ERROR [STDERR]     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
11:25:11,134 ERROR [STDERR]     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
11:25:11,134 ERROR [STDERR]     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
11:25:11,134 ERROR [STDERR]     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
11:25:11,134 ERROR [STDERR]     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
11:25:11,134 ERROR [STDERR]     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
11:25:11,134 ERROR [STDERR]     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
11:25:11,134 ERROR [STDERR]     at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
11:25:11,134 ERROR [STDERR]     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
11:25:11,134 ERROR [STDERR]     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
11:25:11,134 ERROR [STDERR]     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
11:25:11,134 ERROR [STDERR]     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
11:25:11,134 ERROR [STDERR]     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
11:25:11,134 ERROR [STDERR]     at java.lang.Thread.run(Unknown Source)
11:25:11,135 ERROR [STDERR] Caused by: org.hibernate.MappingException: Unknown entity: org.myprogram.entity.MisCollVariableValue
11:25:11,135 ERROR [STDERR]     at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:628)
11:25:11,135 ERROR [STDERR]     at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.getSQLLoadable(SQLQueryReturnProcessor.java:335)
11:25:11,135 ERROR [STDERR]     at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.processRootReturn(SQLQueryReturnProcessor.java:376)
11:25:11,135 ERROR [STDERR]     at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.processReturn(SQLQueryReturnProcessor.java:355)
11:25:11,135 ERROR [STDERR]     at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.process(SQLQueryReturnProcessor.java:171)
11:25:11,135 ERROR [STDERR]     at org.hibernate.loader.custom.sql.SQLCustomQuery.<init>(SQLCustomQuery.java:87)
11:25:11,135 ERROR [STDERR]     at org.hibernate.engine.query.NativeSQLQueryPlan.<init>(NativeSQLQueryPlan.java:67)
11:25:11,135 ERROR [STDERR]     at org.hibernate.engine.query.QueryPlanCache.getNativeSQLQueryPlan(QueryPlanCache.java:136)
11:25:11,135 ERROR [STDERR]     at org.hibernate.impl.AbstractSessionImpl.getNativeSQLQueryPlan(AbstractSessionImpl.java:160)
11:25:11,135 ERROR [STDERR]     at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:165)
11:25:11,135 ERROR [STDERR]     at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:175)
11:25:11,135 ERROR [STDERR]     at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:67)
11:25:11,135 ERROR [STDERR]     ... 102 more

所以我想我的问题是，

是否可以获取EntityManagerFactory并获取新的EntityManger，以便我可以继续运行查询规则。
如果是，如何（因为我不知道为什么它不知道实体）？
这是解决问题的好方法，还是我错误地解决了这个问题？

我希望我已经清楚了。干杯。

@Name("dataValidator")
@Scope(ScopeType.CONVERSATION)
@AutoCreate
public class DataValidator implements DataValidatorIntf {

  @Logger private Log log;

  @In EntityManager entityManager;

  public void methodThatCallsThePrivateOne() {
    validateInputRules();
  }

  private void validateInputRules() {
    if (fInputRules == null) {
      MdInputRuleList mdInputRuleList = (MdInputRuleList) Component.getInstance(MdInputRuleList.class, true);
      fInputRules = mdInputRuleList.getResultList();
    }

    // This is my query, which can fail.
    String sql = 
      " select " +
      "   t2.coll_var_value_id, " + 
      "   t2.attribute_name, " +
      "   t2.load_id, " +
      "   t2.coll_variable_id, " +
      "   t2.collection_id, " +
      "   t2.source_file_line, " +
      "   t2.value " + 
      " from " + 
      "   mis_coll_variable_value t1 " +
      "   inner join mis_coll_variable_value t2 on t2.source_file_line = t1.source_file_line " +
      "     and t2.load_id = :pLoadId " +
      " where " + 
      "   t1.load_id = :pLoadId " + 
      "   and %s " +
      " order by  " + 
      "   t1.source_file_line," +
      "   t1.coll_variable_id "
    ;

    fInputRulesViolations = new HashMap<Long, List<MisCollVariableValue>>();

    for (MdInputRule mdInputRule : fInputRules) {
      Query query = entityManager.createNativeQuery(
        String.format(sql, mdInputRule.getRuleSql()),
        MisCollVariableValue.class
      );
      query.setParameter("pLoadId", fLoadToValidate.getLoadId());

      try {
        if (!fInputRulesViolations.containsKey(mdInputRule.getInputRuleId())) {
          fInputRulesViolations.put(mdInputRule.getInputRuleId(), null);
        }

        fInputRulesViolations.put(
          mdInputRule.getInputRuleId(), 
          query.getResultList()  
        );
      } catch (Exception ex) {
        log.info("Input Rule #0 [Id #1] failed", mdInputRule.getRuleid(), mdInputRule.getInputRuleId());
        ex.printStackTrace();

        // TODO: Try and get a new Entity Manager when a exception is thrown in this method

        // My attempt at getting a EntityManagerFactory

        // EntityManagerFactory myEmf = Persistence.createEntityManagerFactory("PersistenceUnitName");
        // entityManager = myEmf.createEntityManager();
      }
    }
  }

Answer 1

您始终可以使用

获取entityManager

Component.getInstance("entityManager");

但是您的实体不会连接到Seam持久性上下文。我认为你的验证方式有问题，或者我不明白它是如何工作的，但为什么不使用字符串比较而不是失败的查询？

JPA查询失败，然后连接丢失

1 个答案: