AssertionError на Olap4j с SSAS 2012

Question

Мы пытаемся запустить OLAP-запрос с помощью olap4j против SSAS. Мне удалось настроить конечную точку XML/A, и SSMS правильно подключается к конечной точке и работает нормально.

Однако каждый раз, когда я пытаюсь запустить запрос из JAVA, он терпит неудачу.

Class.forName("org.olap4j.driver.xmla.XmlaOlap4jDriver"); 

Connection connection = DriverManager.getConnection(
      "jdbc:xmla:Server=http://servername/msmdpump.dll;Catalog=DatabaseName"); 
OlapWrapper wrapper = (OlapWrapper) connection; 
OlapConnection olapConnection = wrapper.unwrap(OlapConnection.class); 

CellSet set = olapConnection.createStatement().executeOlapQuery(
        "SELECT [Measures].[Foo] ON COLUMNS, " + 
     "[Dimension].[Id].[All].children ON ROWS FROM [Cube]"); 

Исключение/StackTrace:

java.lang.AssertionError 
    at org.olap4j.driver.xmla.XmlaOlap4jElement.<init>(XmlaOlap4jElement.java:43) 
    at org.olap4j.driver.xmla.XmlaOlap4jProperty.<init>(XmlaOlap4jProperty.java:54) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection$PropertyHandler.handle(XmlaOlap4jConnection.java:1890) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection.populateList(XmlaOlap4jConnection.java:854) 
    at org.olap4j.driver.xmla.DeferredNamedListImpl.populateList(DeferredNamedListImpl.java:136) 
    at org.olap4j.driver.xmla.DeferredNamedListImpl.getList(DeferredNamedListImpl.java:90) 
    at org.olap4j.driver.xmla.DeferredNamedListImpl.size(DeferredNamedListImpl.java:116) 
    at java.util.AbstractCollection.toArray(Unknown Source) 
    at java.util.ArrayList.addAll(Unknown Source) 
    at org.olap4j.driver.xmla.XmlaOlap4jLevel.getProperties(XmlaOlap4jLevel.java:189) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection$MemberHandler.addUserDefinedDimensionProperties(XmlaOlap4jConnection.java:1739) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection$MemberHandler.handle(XmlaOlap4jConnection.java:1698) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection.populateList(XmlaOlap4jConnection.java:854) 
    at org.olap4j.driver.xmla.XmlaOlap4jCube$RawMetadataReader.lookupMemberRelatives(XmlaOlap4jCube.java:547) 
    at org.olap4j.driver.xmla.XmlaOlap4jCube$RawMetadataReader.lookupMemberByUniqueName(XmlaOlap4jCube.java:438) 
    at org.olap4j.driver.xmla.XmlaOlap4jCube$DelegatingMetadataReader.lookupMemberByUniqueName(XmlaOlap4jCube.java:252) 
    at org.olap4j.driver.xmla.XmlaOlap4jCube$CachingMetadataReader.lookupMemberByUniqueName(XmlaOlap4jCube.java:338) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection$MeasureHandler.handle(XmlaOlap4jConnection.java:1555) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection.populateList(XmlaOlap4jConnection.java:854) 
    at org.olap4j.driver.xmla.XmlaOlap4jCube.<init>(XmlaOlap4jCube.java:110) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection$CubeHandler.handle(XmlaOlap4jConnection.java:1284) 
    at org.olap4j.driver.xmla.XmlaOlap4jConnection.populateList(XmlaOlap4jConnection.java:854) 
    at org.olap4j.driver.xmla.DeferredNamedListImpl.populateList(DeferredNamedListImpl.java:136) 
    at org.olap4j.driver.xmla.DeferredNamedListImpl.getList(DeferredNamedListImpl.java:90) 
    at org.olap4j.driver.xmla.DeferredNamedListImpl.size(DeferredNamedListImpl.java:116) 
    at java.util.AbstractList$Itr.hasNext(Unknown Source) 
    at org.olap4j.driver.xmla.XmlaOlap4jCellSet.lookupCube(XmlaOlap4jCellSet.java:520) 
    at org.olap4j.driver.xmla.XmlaOlap4jCellSet.createMetaData(XmlaOlap4jCellSet.java:403) 
    at org.olap4j.driver.xmla.XmlaOlap4jCellSet.populate(XmlaOlap4jCellSet.java:181) 
    at org.olap4j.driver.xmla.XmlaOlap4jStatement.executeOlapQuery(XmlaOlap4jStatement.java:372) 
    at com.socgen.moma.services.pricingassetscope.DefaultPricingAssetScopeManagerTest.testOlap4j(DefaultPricingAssetScopeManagerTest.java:184) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) 
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) 
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74) 
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83) 
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) 
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) 
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174) 
    at org.junit.runner.JUnitCore.run(JUnitCore.java:160) 
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78) 
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212) 
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) 
    14:17 

Answer 1

По какой-то причине, код пытается создать элемент XMLA с нулевым уникальным именем.

XmlaOlap4jElement(
    String uniqueName, 
    String name, 
    String caption, 
    String description) 
{ 
    assert uniqueName != null; 

Попробуйте обнюхивать сообщения, исходящие из SSAS. Возможно, что-то напуганное с возвратом XML.

В качестве альтернативы вы можете воспользоваться высокой дорогой и отключить утверждения, но эта ошибка является признаком того, что что-то ужасно неправильно происходит, и я рекомендую против этого подхода.