带有位置参数的休眠本机查询

Question

我编写了原生 sql 查询而不是使用 hql 并面临问题

位置超出了声明的序数参数的数量。请记住，序数参数是基于 1 的！位置：1

<sql-query name="GET_ARRAY_MAX_POINT_QUESTION">
    <![CDATA[
        select TEST.TEST_ID as testId, TEST.VERSION_ID as versionId,
        PASSED_TEST.RESULT as userResult,
        PASSED_TEST.TIME_COMPLITED as timeComplited,
        sum(COMPLEXITY) as maxTestResult from QUESTION
        JOIN TEST_QUESTION ON QUESTION.QUESTION_ID = TEST_QUESTION.QUESTION_ID
        JOIN TEST ON TEST.TEST_ID=TEST_QUESTION.TEST_ID
        JOIN PASSED_TEST ON TEST.TEST_ID=PASSED_TEST.TEST_ID
        AND TEST.VERSION_ID=PASSED_TEST.VERSION_ID
        WHERE TEST.SUBJECT_ID = ?
        AND PASSED_TEST.USER_ID = ?
        GROUP BY PASSED_TEST.TEST_EVENT_ID
        ]]>
    </sql-query>

和DAO

return session
                .createSQLQuery(GET_ARRAY_MAX_POINT_QUESTION_NAME_QUERY)
                .addScalar(TEST_ID_RESULT_PARAM, StandardBasicTypes.LONG)
                .addScalar(VERSION_ID_RESULT_PARAM, StandardBasicTypes.LONG)
                .addScalar(USER_RESULT_PARAM, StandardBasicTypes.DOUBLE)
                .addScalar(MAX_TEST_RESULT_PARAM, StandardBasicTypes.DOUBLE)
                .addScalar(TIME_COMPLITED_RESULT_PARAM, StandardBasicTypes.DATE)
                .setParameter(0, subjectId)
                .setParameter(1, userId)
                .setResultTransformer(
                        Transformers.aliasToBean(PassedTestStatistic.class))
                .list();

我读到 //JPA specification. Only positional parameter binding may be portably used for native queries. 并且休眠使用 0 作为第一个索引。

堆栈跟踪

Caused by: org.hibernate.QueryParameterException: Position beyond number of declared ordinal parameters. Remember that ordinal parameters are 1-based! Position: 1
    at org.hibernate.engine.query.spi.ParameterMetadata.getOrdinalParameterDescriptor(ParameterMetadata.java:80)
    at org.hibernate.engine.query.spi.ParameterMetadata.getOrdinalParameterExpectedType(ParameterMetadata.java:86)
    at org.hibernate.internal.AbstractQueryImpl.determineType(AbstractQueryImpl.java:444)
    at org.hibernate.internal.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:416)
    at by.bsuir.testapp.database.hibernate.PassedTestHibernateDAO.getDataForPassedTestStatisticGraph(PassedTestHibernateDAO.java:73)
    at by.bsuir.testapp.service.PassedTestServiceImpl.getDataForPassedTestStatisticGraph(PassedTestServiceImpl.java:58)
    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:601)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:319)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
    at $Proxy28.getDataForPassedTestStatisticGraph(Unknown Source)
    at by.bsuir.testapp.controller.StatisticPassedTest.createLinearModel(StatisticPassedTest.java:61)
    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:601)
    at org.apache.el.parser.AstValue.invoke(AstValue.java:262)
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)

//更新

有趣的是，当我设置查询数字值时

WHERE TEST.SUBJECT_ID = 1
        AND PASSED_TEST.USER_ID = 1

我明白了

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'GET_ARRAY_MAX_POINT_QUESTION' at line 1 

但是在 MySQL 中我得到了成功的结果。

我该如何决定这个问题？

Answer 1

你打电话

session.createSQLQuery 

但我相信你需要打电话

session.getNamedQuery 

使用命名查询时。

Answer 2

请检查

.setParameter(1, subjectId)
.setParameter(2, userId)

正如异常跟踪所说，序数参数是基于 1 的！

Answer 3

您可以尝试使用命名参数而不是提供位置参数吗？

例如。

session
  .createSQLQuery("update table1 set variable = variable + 1 where id = :id")
  .setParameter("id", someId)
  .executeUpdate();

原生 SQL 查询支持位置参数和命名参数。

请阅读命名 SQL 查询：http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/querysql.html#d0e13930

Answer 4

查看您的来源

createSQLQuery(GET_ARRAY_MAX_POINT_QUESTION_NAME_QUERY)

你必须有一个变量指向一个包含本地查询的实际名称的字符串，如下所示：

GET_ARRAY_MAX_POINT_QUESTION_NAME_QUERY = "GET_ARRAY_MAX_POINT_QUESTION"

你在这里得到的错误：

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'GET_ARRAY_MAX_POINT_QUESTION' at line 1

表明 createSqlQuery 没有按名称查找您的本机查询，而是尝试将名称“GET_ARRAY_MAX_POINT_QUESTION”作为原始 SQL 执行，就像您输入 s.createSqlQuery("Select * from...")如果您查看文档here，您会发现为了查找命名查询，即使是本机查询，您仍然必须使用 getNamedQuery。

Answer 5

对于那些在谷歌上搜索错误消息的人： 当我根本没有感兴趣的类的映射时出现此错误。映射解决了这个问题。