Zebra crashes with NPE in HashTable.scala:154

[Wolfgang Laun]

Version xmlzebra-1.0-pre-2-for-java.zip
java version "1.6.0_18" on Linux

One of the .xsd files is attached. (The other one is almost identical.)

$ /extra/xmlzebra/bin/xmlzebra.sh -o xsd/paths.xml xsd/
14:38:02.394 [main] INFO n.l.xmlzebra.SchemaPathGenerator$ - No. of XML Schemas: 2
java.lang.NullPointerException
        at scala.collection.mutable.HashTable$class.elemHashCode(HashTable.scala:154)
        at scala.collection.mutable.HashMap.elemHashCode(HashMap.scala:33)
        at scala.collection.mutable.HashTable$class.findEntry(HashTable.scala:66)
        at scala.collection.mutable.HashMap.findEntry(HashMap.scala:33)
        at scala.collection.mutable.HashMap.findEntry(HashMap.scala:33)
        at scala.collection.mutable.DefaultMapModel$class.get(DefaultMapModel.scala:32)
        at scala.collection.mutable.HashMap.get(HashMap.scala:33)
        at net.launchpad.xmlzebra.SchemaPathGenerator$$anonfun$main$1.apply(SchemaPathGenerator.scala:118)
        at net.launchpad.xmlzebra.SchemaPathGenerator$$anonfun$main$1.apply(SchemaPathGenerator.scala:116)
        at scala.Iterator$class.foreach(Iterator.scala:414)
        at scala.Iterator$$anon$14.foreach(Iterator.scala:265)
        at scala.Iterable$class.foreach(Iterable.scala:256)
        at scala.collection.Map$$anon$4.foreach(Map.scala:113)
        at net.launchpad.xmlzebra.SchemaPathGenerator$.main(SchemaPathGenerator.scala:116)
        at net.launchpad.xmlzebra.SchemaPathGenerator.main(SchemaPathGenerator.scala)
Memory: total = 16M, free = 11M

[abcoates (abcoates)]

This is not directly related to the bug, but note that Xerces will ignore many of the large upper bounds in the attached Schema, i.e. it treats them as unbounded. XML Zebra doesn't (and shouldn't) mimic this.

[abcoates (abcoates)]

The problem is that the Schema does not declare a target namespace, and XML Zebra has (so far) only been tested against Schemas with an explicit target namespace.