The file provided by Dyrex doesn't work for parent child hierarchies; the same thing needs to be done to schemaReader.isDrillable(member) too. Here's the compiled jar file with that addition https://drive.google.com/open?id=0B01Lyhhy36jeMlN6RGZCNUl0T0k
Thanks ddaly, pmaffeis, dyrex for the workaround! Very poor on Tibco's part that they are neither fixing this nor providing the source for jpivot with the CE.
The build guide says this is a separate download available via technical support. The source needs to be modified to fix the handling of parent child hierarchies through Mondrian. getSchemaReader() calls need to be replaced with getSchemaReader().withLocus() calls. This has been broken since 5.6 Can anyone please provide the jasper jpivot (modified jpivot) source files jasperjpivot-5.1.0-src.zip?