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mondrian层次结构错误：在当前的实现中，父/子层次结构必须只有一个级别

分类：编程问答

如何解决mondrian层次结构错误：在当前的实现中，父/子层次结构必须只有一个级别

注意事项：我是有关Mondrian的一个新手，我正努力地制作具有多层层次结构的多维数据集。

这些是我的表（Postgresql，但是可以在任何其他DBMS上使用）

CREATE TABLE TMP_OLAP_DIMENSION
(
    level_0_id      INT NOT NULL,level_1_id     INT DEFAULT NULL,description    VARCHAR(512)
);
INSERT INTO TMP_OLAP_DIMENSION VALUES(1,NULL,'1. Acquisition costs');
INSERT INTO TMP_OLAP_DIMENSION VALUES(1,2,'1.02 Administrative,finance,legal and marketing expenses');
INSERT INTO TMP_OLAP_DIMENSION VALUES(2,'2. Construction costs');
INSERT INTO TMP_OLAP_DIMENSION VALUES(2,1,'2.01 Demolition,site preparation and formation');

CREATE TABLE TMP_OLAP_FACTS
(
    level_0_id      INT NOT NULL,measure        FLOAT NOT NULL
    --FOREIGN KEY....
);
INSERT INTO TMP_OLAP_FACTS VALUES(1,10);
INSERT INTO TMP_OLAP_FACTS VALUES(1,20);
INSERT INTO TMP_OLAP_FACTS VALUES(2,30);
INSERT INTO TMP_OLAP_FACTS VALUES(2,40);
commit

并且，在使用Mondrian Schema Workbench开发了架构之后，生成的XML是这样的：

<Schema name="My schema">
  <Dimension type="StandardDimension" visible="true" name="My dimension">
    <Hierarchy name="My dimension hierarchy" visible="true" hasAll="true">
      <Table name="tmp_olap_dimension" schema="public" alias="">
      </Table>
      <Level name="Level 0" visible="true" column="level_0_id" nameColumn="description" uniqueMembers="true">
      </Level>
      <Level name="Level 1" visible="true" column="level_1_id" nameColumn="description" parentColumn="level_0_id" uniqueMembers="true">
      </Level>
    </Hierarchy>
  </Dimension>
  <Cube name="My cube" visible="true" cache="true" enabled="true">
    <Table name="tmp_olap_facts" schema="public" alias="">
    </Table>
    <DimensionUsage source="My dimension" name="My dimension" visible="true" foreignKey="level_1_id">
    </DimensionUsage>
    <Measure name="My measure" column="measure" aggregator="sum" visible="true">
    </Measure>
  </Cube>
</Schema>

（为清晰起见，我将省略Schema Workbench的屏幕截图，但如有需要，我将其发布）。

通过Pivot4j（pentaho插件和独立战争）攻击多维数据集时，我将measure设置为列，并将My dimension hierarchy设置为行。

它可以工作，但是当我尝试在level_1级别下钻取行以获取度量时，出现以下异常：

15:58:32,348 ERROR [Pivot4JExceptionHandler] Se ha producido una excepción no controlada
javax.el.ELException: mondrian.olap.MondrianException: Mondrian Error:Internal error: assert Failed: In the current implementation,parent/child hierarchies must have only one level (plus the 'All' level).
        at org.apache.el.parser.AstValue.invoke(AstValue.java:260)
        at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:267)
        at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
        at javax.faces.component.UICommand.broadcast(UICommand.java:120)
        at javax.faces.component.UIViewRoot._broadcastAll(UIViewRoot.java:1172)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:365)
        at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1656)
        at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:862)
        at org.apache.myfaces.lifecycle.InvokeApplicationExecutor.execute(InvokeApplicationExecutor.java:42)
        at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:196)
        at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:143)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
        at org.pivot4j.pentaho.servlet.FacesdispatcherServlet.service(FacesdispatcherServlet.java:113)
        at org.pentaho.platform.web.servlet.PlugindispatchServlet.service(PlugindispatchServlet.java:102)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.pentaho.platform.web.http.filters.PentahoWebContextFilter.doFilter(PentahoWebContextFilter.java:236)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.pentaho.platform.web.http.filters.PentahoRequestContextFilter.doFilter(PentahoRequestContextFilter.java:90)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317)
        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.pentaho.platform.web.http.security.RequestParameterauthenticationFilter.doFilter(RequestParameterauthenticationFilter.java:194)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:158)
        at org.pentaho.platform.web.http.security.PentahoBasicProcessingFilter.doFilterInternal(PentahoBasicProcessingFilter.java:128)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.pentaho.platform.web.http.filters.HttpSessionPentahoSessionIntegrationFilter.doFilter(HttpSessionPentahoSessionIntegrationFilter.java:276)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.pentaho.platform.web.http.security.CsrfGateFilter.doFilter(CsrfGateFilter.java:136)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
        at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
        at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:347)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:263)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.pentaho.platform.web.http.filters.SystemStatusFilter.doFilter(SystemStatusFilter.java:58)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.pentaho.platform.web.http.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.pentaho.platform.web.http.filters.WebappRootForwardingFilter.doFilter(WebappRootForwardingFilter.java:73)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.pentaho.platform.web.http.filters.PentahoPathDecodingFilter.doFilter(PentahoPathDecodingFilter.java:54)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
        at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:609)
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1623)
        at org.apache.tomcat.util.net.socketProcessorBase.run(SocketProcessorBase.java:49)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.lang.Thread.run(Thread.java:748)
Caused by: mondrian.olap.MondrianException: Mondrian Error:Internal error: assert Failed: In the current implementation,parent/child hierarchies must have only one level (plus the 'All' level).
        at mondrian.resource.MondrianResource$_Def0.ex(MondrianResource.java:999)
        at mondrian.olap.Util.newInternal(Util.java:2467)
        at mondrian.olap.Util.assertTrue(Util.java:2459)
        at mondrian.rolap.sqlMemberSource.makeChildMembersql_PCRoot(sqlMemberSource.java:1169)
        at mondrian.rolap.sqlMemberSource.getMemberChildren2(sqlMemberSource.java:956)
        at mondrian.rolap.sqlMemberSource.getMemberChildren(sqlMemberSource.java:892)
        at mondrian.rolap.sqlMemberSource.getMemberChildren(sqlMemberSource.java:865)
        at mondrian.rolap.SmartMemberReader.readMemberChildren(SmartMemberReader.java:249)
        at mondrian.rolap.SmartMemberReader.getMemberChildren(SmartMemberReader.java:211)
        at mondrian.rolap.RolapCubeHierarchy$CacheRolapCubeHierarchyMemberReader.readMemberChildren(RolapCubeHierarchy.java:631)
        at mondrian.rolap.RolapCubeHierarchy$CacheRolapCubeHierarchyMemberReader.getMemberChildren(RolapCubeHierarchy.java:727)
        at mondrian.rolap.SmartMemberReader.getMemberChildren(SmartMemberReader.java:177)
        at mondrian.rolap.RolapSchemaReader.internalGetMemberChildren(RolapSchemaReader.java:186)
        at mondrian.rolap.RolapSchemaReader.getMemberChildren(RolapSchemaReader.java:169)
        at mondrian.rolap.RolapSchemaReader.getMemberChildren(RolapSchemaReader.java:162)
        at mondrian.olap4j.MondrianOlap4jMember$3.execute(MondrianOlap4jMember.java:113)
        at mondrian.olap4j.MondrianOlap4jMember$3.execute(MondrianOlap4jMember.java:109)
        at mondrian.server.Locus.execute(Locus.java:90)
        at mondrian.server.Locus.execute(Locus.java:75)
        at mondrian.olap4j.MondrianOlap4jMember.getChildMemberCount(MondrianOlap4jMember.java:106)
        at org.pivot4j.impl.QueryAdapter.canExpand(QueryAdapter.java:838)
        at org.pivot4j.transform.impl.DrillExpandPositionImpl.canExpand(DrillExpandPositionImpl.java:44)
        at org.pivot4j.ui.command.DrillExpandPositionCommand.canExecute(DrillExpandPositionCommand.java:69)
        at org.pivot4j.ui.AbstractPivotRenderer.getCommands(AbstractPivotRenderer.java:146)
        at org.pivot4j.ui.table.TableRenderer.access$100(TableRenderer.java:60)
        at org.pivot4j.ui.table.TableRenderer$3.handleTreeNode(TableRenderer.java:640)
        at org.pivot4j.ui.table.TableHeaderNode.walkChildrenAtColIndex(TableHeaderNode.java:891)
        at org.pivot4j.ui.table.TableHeaderNode.walkChildrenAtColIndex(TableHeaderNode.java:907)
        at org.pivot4j.ui.table.TableRenderer.renderBody(TableRenderer.java:604)
        at org.pivot4j.ui.table.TableRenderer.render(TableRenderer.java:483)
        at org.pivot4j.analytics.ui.ViewHandler.render(ViewHandler.java:591)
        at org.pivot4j.analytics.ui.ViewHandler.structureChanged(ViewHandler.java:953)
        at org.pivot4j.impl.PivotModelImpl.fireStructureChanged(PivotModelImpl.java:833)
        at org.pivot4j.impl.PivotModelImpl$1.queryChanged(PivotModelImpl.java:111)
        at org.pivot4j.impl.QueryAdapter.fireQueryChanged(QueryAdapter.java:197)
        at org.pivot4j.impl.QueryAdapter.fireQueryChanged(QueryAdapter.java:182)
        at org.pivot4j.impl.QueryAdapter.onQuaxChanged(QueryAdapter.java:1109)
        at org.pivot4j.impl.QueryAdapter$1.quaxChanged(QueryAdapter.java:79)
        at org.pivot4j.impl.Quax.fireQuaxChanged(Quax.java:163)
        at org.pivot4j.impl.Quax.expand(Quax.java:838)
        at org.pivot4j.impl.QueryAdapter.expand(QueryAdapter.java:934)
        at org.pivot4j.transform.impl.DrillExpandPositionImpl.expand(DrillExpandPositionImpl.java:69)
        at org.pivot4j.ui.command.DrillExpandPositionCommand.execute(DrillExpandPositionCommand.java:103)
        at org.pivot4j.ui.command.DrillExpandPositionCommand.execute(DrillExpandPositionCommand.java:20)
        at org.pivot4j.analytics.ui.ViewHandler.executeCommand(ViewHandler.java:641)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.el.parser.AstValue.invoke(AstValue.java:247)
        ... 83 more

我在做什么错了？

非常非常感谢！

解决方法

如果有人迷惑了这个问题，那么您可能会犯与我相同的错误：

经过几个小时的比较，我的其他人的蒙德里安模式与我的蒙德里安模式进行了比较，然后看了《蒙德里安在行动》一书，我意识到我完全误用了parentColumn，即（我认为）的目的是指向相同的层次结构级别，例如在具有主管的员工中也属于员工。

解决方案是完全删除xml的parentColumn属性。

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