Schema.createCube(xml) - get error when adding DimesionUsage to Xml

Question

mondrian.olap.Schema.createCube(xml) in java get error when I add DimesionUsage to Xml

I create myXML.xml :

<Cube cache="false" caption="" enabled="true" name="Deposit,LC,Loan">
 <View alias="virtualCube">
  <SQL dialect="generic">
  " some SQL query "
  </SQL>
 </View>
 <DimensionUsage foreignKey="FD_BRANCH" name="Branch" source="Branch"/>
 <DimensionUsage foreignKey="FD_CLOSEDATE" name="Date" source="Date"/>
 <DimensionUsage foreignKey="FD_CURRENCY" name="Currency" source="Currency"/>
 <Measure aggregator="sum" caption="" column="CNT" name="Count"/>
 <Measure aggregator="sum" caption="" column="ACCOUNT" name="AccAmount"/>
</Cube>

But when I call mondrian.olap.Schema.createCube(myXML) it gives me below error:

Exception in thread "main" java.lang.NullPointerException
at mondrian.olap.MondrianDef$DimensionUsage.getDimension(MondrianDef.java:990)
at mondrian.rolap.RolapCube.getOrCreateDimension(RolapCube.java:778)
at mondrian.rolap.RolapCube.<init>(RolapCube.java:197)
at mondrian.rolap.RolapCube.<init>(RolapCube.java:228)
at mondrian.rolap.RolapSchema.createCube(RolapSchema.java:847)

EDIT

This error happens just for "Branch" because it have more than one hierarchy in, but it worked correctly for other cube in Mondrian Schema.

Does anybody know why?

Answer 1

It was the bug of Mondrian ...

my "Branch" dimension has more than one hierarchy but others doesn't have.

The solution is :

DimensionUsage foreignKey="FD_BRANCH" name="Branch.hierarchyName" source="Branch"/>

for those have more than one hierarchy should do like this and It'll work perfectly!