无法解决的加入路径

Question

我有以下 HQL 查询：

SELECT examen, OrganeSaisiMission
FROM com.an.eloi.model.domaine.amendement.Amendement as amendementOrigine 
join amendementOrigine.divisionExamen as divisionExamenOrigine 
join divisionExamenOrigine.examenOrigine as examen 
join examen.organeSaisi as organeSaisi 
join organeSaisi.texteDeLoi as texteDeLoi 
left join OrganeSaisiMission with OrganeSaisiMission.missionPlf.id = amendementOrigine.missionPlf.id and OrganeSaisiMission.organeSaisi.id = organeSaisi.id 
join organeSaisi.organe as organe
order by getTriBibard(texteDeLoi.texteBibard) asc, texteDeLoi.textePartie asc, examen.examenSecondeDeliberation asc

我得到一个错误：

2020-11-12 18:32:10,603 ERROR [http-bio-8080-exec-1] -  Path expected for join! - at org.hibernate.hql.PARSER(reportError:56)
2020-11-12 18:32:10,607 ERROR [http-bio-8080-exec-1] - [Ljava.lang.StackTraceElement;@ad757a9 - at java.lang.Object(error:46)
java.lang.NullPointerException
    at org.hibernate.hql.ast.util.SessionFactoryHelper.findSQLFunction(SessionFactoryHelper.java:364)
    at org.hibernate.hql.ast.tree.IdentNode.getDataType(IdentNode.java:293)
    at org.hibernate.hql.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:154)
    at org.hibernate.hql.ast.HqlSqlWalker.useSelectClause(HqlSqlWalker.java:857)
    at org.hibernate.hql.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:645)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:685)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:301)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:244)
    at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:256)
    at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:187)
    at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:138)
    at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
    at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
    at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:124)
    at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
    at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)
    at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1770)
    at com.an.eloi.model.dao.examen.ExamenDAO.findExamensForMenuItem(ExamenDAO.java:161)
    at com.an.eloi.model.domaine.examen.Examen.findExamensForMenuItem(Examen.java:82)
    at com.an.eloi.service.transactionnel.grilleV2.moteur.Regles.checkAmendementsRedeposables(Regles.java:658)
    at com.an.eloi.service.transactionnel.grilleV2.moteur.Regles.processItemBoutonRedeposer(Regles.java:567)
    at com.an.eloi.service.transactionnel.grilleV2.moteur.Regles.executeReglesSelect(Regles.java:1222)
    at com.an.eloi.service.transactionnel.grilleV2.moteur.MoteurReglesMenuBarre.executeSelect(MoteurReglesMenuBarre.java:1222)
    at com.an.eloi.service.transactionnel.grilleV2.etat.SelectState.genereBarMenu(SelectState.java:63)
    at com.an.eloi.service.transactionnel.grilleV2.MenuService.executerBarreMenuService(MenuService.java:639)
    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:606)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
    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$1.proceedWithInvocation(TransactionInterceptor.java:96)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    at com.sun.proxy.$Proxy99.executerBarreMenuService(Unknown Source)
    at com.an.eloi.facade.grilleV2.GrilleSimpleFacade.executerBarreMenuService(GrilleSimpleFacade.java:181)
    at com.an.eloi.web.controller.barreoutils.BarreOutilsController.loadBarreMenu(BarreOutilsController.java:101)
    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:606)
    at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:743)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:672)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:82)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:919)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at com.an.eloi.common.EloiActionFilter.doHttpFilter(EloiActionFilter.java:111)
    at com.an.eloi.common.EloiActionFilter.doHttpFilterSynchronizedBySession(EloiActionFilter.java:159)
    at com.an.eloi.common.EloiActionFilter.doFilter(EloiActionFilter.java:168)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at com.an.fwk.core.web.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:84)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)

显然，Hibernate 无法连接 OrganeSaisiMission 和其他表。怎么解决？

编辑：这里有 3 个可能很重要的 Hibernate 映射文件

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="com.an.eloi.model.domaine.missionPlf.MissionPlf" table="mission_plf">
        <id name="id" type="java.lang.Long">
            <column name="MISSION_PLF_ID" />
            <generator class="identity" />
        </id>
        <many-to-one name="divisionDeLoi" class="com.an.eloi.model.domaine.divisionDeLoi.DivisionDeLoi" fetch="select">
            <column name="DIVISIONDELOI_ID" not-null="true" />
        </many-to-one>
        <property name="missionPlfLibdef" type="java.lang.String">
            <column name="MISSION_PLF_INTITULE" length="1024" />
        </property>
        <property name="missionPlfEtat" type="java.lang.String">
            <column name="MISSION_PLF_ETAT" length="1024" />
        </property>
        <property name="missionPlfIntituleEtat" type="java.lang.String">
            <column name="MISSION_PLF_INTITULE_ETAT" length="1024" />
        </property> 
         <property name="missionPlfOrdreEtat" type="java.lang.Integer">
            <column name="MISSION_PLF_ORDRE_ETAT" length="10" />
        </property>
        <property name="missionPlfCode" type="java.lang.String">
            <column name="MISSION_PLF_CODE" length="1024" />
        </property> 
        <property name="missionPlfOrdre" type="java.lang.Integer">
            <column name="MISSION_PLF_ORDRE" length="10" />
        </property>
        <property name="missionPlfLigne" type="java.lang.String">
            <column name="MISSION_PLF_LIGNE" length="1024" />
        </property>              
        <property name="missionPlfIntituleTableau" type="java.lang.String">
            <column name="MISSION_PLF_INTITULE_TABLEAU" length="1024" />
        </property>                
        <property name="missionPlfOrdreTableau" type="java.lang.Integer">
            <column name="MISSION_PLF_ORDRE_TABLEAU" length="10" />
        </property>

        <set name="amendements" inverse="true">
            <key>
                <column name="MISSION_ID" />
            </key>
            <one-to-many class="com.an.eloi.model.domaine.amendement.Amendement" />
        </set>
        <set name="programmePlfs" inverse="true">
            <key>
                <column name="MISSION_PLF_ID" not-null="true" />
            </key>
            <one-to-many class="com.an.eloi.model.domaine.programmePlf.ProgrammePlf" />
        </set>

        <set name="organesaisimissions" table="organe_saisi_mission" inverse="true" cascade="save-update" lazy="true" fetch="select">
            <key>
                <column name="MISSION_PLF_ID" not-null="true" />
            </key>
            <one-to-many class="com.an.eloi.model.domaine.organesaisimission.OrganeSaisiMission" />
        </set>
      </class>
</hibernate-mapping>

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="com.an.eloi.model.domaine.organesaisi.OrganeSaisi" table="organe_saisi">
        <id name="id" type="java.lang.Long">
            <column name="ORGANE_SAISI_ID" />
            <generator class="identity" />
        </id>
        <many-to-one name="organe" class="com.an.eloi.model.domaine.organe.Organe" fetch="select">
            <column name="ORGANE_ID" not-null="true" />
        </many-to-one>
        <many-to-one name="texteDeLoi" class="com.an.eloi.model.domaine.texteDeLoi.TexteDeLoi" fetch="select">
            <column name="TEXTEDELOI_ID" not-null="true" />
        </many-to-one>
        <property name="organeSaisiTypeDeSaisie" type="java.lang.String">
            <column name="ORGANE_SAISI_TYPE_DE_SAISIE" length="100" />
        </property>
        <property name="organeSaisiLegisId" type="java.lang.String">
            <column name="ORGANE_SAISI_LEGIS_ID" not-null="false"/>
        </property>
        <property name="saisieDebut" type="java.util.Date">
            <column name="SAISIE_DEBUT" not-null="false"/>
        </property>
        <property name="saisieFin" type="java.util.Date">
            <column name="SAISIE_FIN" not-null="false"/>
        </property>

        <set name="organesaisimissions" table="organe_saisi_mission" inverse="true" cascade="save-update" lazy="true" fetch="select">
            <key>
                <column name="ORGANE_SAISI_ID" not-null="true" />
            </key>
            <one-to-many class="com.an.eloi.model.domaine.organesaisimission.OrganeSaisiMission" />
        </set>

    </class>
</hibernate-mapping>

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">


<hibernate-mapping>
    <class name="com.an.eloi.model.domaine.organesaisimission.OrganeSaisiMission" table="organe_saisi_mission">
        <id name="id" type="java.lang.Long">
            <column name="ORGANE_SAISI_MISSION_ID" />
            <generator class="identity" />
        </id>
        <many-to-one name="organeSaisi" class="com.an.eloi.model.domaine.organesaisi.OrganeSaisi" fetch="select">
            <column name="ORGANE_SAISI_ID" not-null="true" />
        </many-to-one>
        <many-to-one name="missionPlf" class="com.an.eloi.model.domaine.missionPlf.MissionPlf" fetch="select">
            <column name="MISSION_PLF_ID" not-null="true" />
        </many-to-one>
        <property name="missionOrdre" type="java.lang.Integer">
            <column name="MISSION_ORDRE" />
        </property>
        <property name="delaiDepotMission" type="java.util.Date">
            <column name="DELAI_DEPOT_MISSION" length="10" />
        </property>
        <property name="diffusion" type="java.lang.Byte">
            <column name="DIFFUSION" not-null="true" />
        </property>
    </class>
</hibernate-mapping>

在第2个中，我加了organesaisimissions Set，没有用。无论有没有它们，我都会遇到同样的错误。

Answer 1

当你想引用某个连接时，你必须使用别名。除此之外，异常表明您使用的功能未映射到方言中。对于此类函数，您需要使用 JPA 函数调用语法。试试这个：

SELECT examen, m
FROM com.an.eloi.model.domaine.amendement.Amendement as amendementOrigine 
join amendementOrigine.divisionExamen as divisionExamenOrigine 
join divisionExamenOrigine.examenOrigine as examen 
join examen.organeSaisi as organeSaisi 
join organeSaisi.texteDeLoi as texteDeLoi 
left join OrganeSaisiMission m with m.missionPlf.id = amendementOrigine.missionPlf.id and m.organeSaisi.id = organeSaisi.id 
join organeSaisi.organe as organe
order by FUNCTION('getTriBibard', texteDeLoi.texteBibard) asc, texteDeLoi.textePartie asc, examen.examenSecondeDeliberation asc