java.lang.IllegalStateException

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  • Saxon XSLT and XQuery Processor / Mailing Lists
    via by Unknown author,
    • java.lang.IllegalStateException: Cannot >>> call >>> next() when input is exhausted >>> at >>> >> net.sf.saxon.tinytree.TinyTreeWalker.next(TinyTreeWalker.java:196) >> >>> at net.sf.saxon.pull.PullFilter.next(PullFilter.java:85) >>> at >>> >>> >> net.sf.saxon.pull.PullNamespaceReducer.next(PullNamespaceReduc >> er.java:71) >> >>> at net.sf.saxon.pull.PullToStax.next(PullToStax.java:223) >>> at >>> >>> >> com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXStreamCo >> nnector.bridge(StAXStreamConnector.java:156) >> >>> at >>> >>> >> com.sun.xml.internal.bind.v2.runtime.unmarshaller.Unmarshaller >> Impl.unmarshal0(UnmarshallerImpl.java:333) >> >>> at >>> >>> >> com.sun.xml.internal.bind.v2.runtime.unmarshaller.Unmarshaller >> Impl.unmarshal(UnmarshallerImpl.java:312) >> >>> at TaskImpl.readFromXML(TaskImpl.java:182) >>> at TaskImpl.main(TaskImpl.java:336) >>> >>> I wonder whether these two variants are equivalent >>> >>> >>> Nikita Zinoviev wrote: >>> >>> >>>> Good luck to you, this seems rather eye-catching! >>>> I don't know much about JAXB, though I explored some >>>> >> openjdk sources >> >>>> for UnmarshallerImpl via google codesearch. >>>> >>>> Nikita >>>> >>>> Michael Kay wrote: >>>> >>>> >>>> >>>>> Just another progress report on this: can't entirely blame the >>>>> Unmarshaller for falling over, because it seems the >>>>> >> stream of events >> >>>>> delivered by Saxon isn't actually well-balanced. This could be a >>>>> consequence of a bad patch for another problem. Will need >>>>> >> to investigate further. >> >>>>> Michael Kay >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -----Original Message----- From: Michael Kay [mailto:mike@...] Sent: 30 March 2009 23:14 To: 'Mailing list for the SAXON XSLT and XQuery processor' Subject: Re: [saxon] Forwarding saxon results to JAXB >> unmarshaller >> via S9API > Shouldn't be hard to fix. > > > > Perhaps I spoke too soon. After Saxon returns the END_DOCUMENT event, the >> Unmarshaller calls >> next() again. It shouldn't do this; the only valid call in END_DOCUMENT state is close(). So Saxon should either throw NoSuchElementException ("if next() is called when hasNext() returns false"), or IllegalStateException ("If >> a method >> is called in an invalid state the method will throw a java.lang.IllegalStateException"). But either exception simply causes the Unmarshaller to bomb out with a stack trace. So I don't really know what's going on: I don't think the Unmarshaller is behaving in a conformant way. Here's the >> stack trace: >> Exception in thread "main" java.lang.IllegalStateException at net.sf.saxon.evpull.EventToStaxBridge.nextx(EventToStaxBridge. java:257) at >> net.sf.saxon.evpull.EventToStaxBridge.next(EventToStaxBridge.java:233) >> at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.b ridge(StAXStre amConnector.java:126) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unma rshal0(Unmarsh allerImpl.java:333) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unma rshal(Unmarsha llerImpl.java:312) at test.ZinovievTest.readFromXML(ZinovievTest.java:172) at test.ZinovievTest.main(ZinovievTest.java:301) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
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