NPE when Title composite occurs inside Set composite

[GoogleCodeExporter]

What steps will reproduce the problem?
1.  NPE when Title composite occurs inside Set composite

        <Set>
            <Title>
                <TitleType/>
                <TitleText>Hobbit Set</TitleText>
            </Title>
        </Set>
2.
3.

What is the expected output? What do you see instead?
NPE

Caused by: java.lang.NullPointerException
    at com.ebrary.onix.composite.Sets.consume(Sets.java:79)
    at org.jonix.JonixTag.consumeChildren(JonixTag.java:119)
    at org.jonix.JonixTag.consumeChildren(JonixTag.java:122)
    at org.jonix.JonixTag.process(JonixTag.java:39)
    at org.jonix.JonixParser$OnChunkListenerImpl.onChunk(JonixParser.java:161)
    at org.jonix.JonixChunksHandler.endElement(JonixChunksHandler.java:106)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)
    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.endNamespaceScope(XMLDTDValidator.java:2054)
    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:2005)
    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:879)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2973)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:648)
    at org.jonix.JonixParser.parse(JonixParser.java:197)
    at org.jonix.JonixScanner.doScan(JonixScanner.java:154)
    at org.jonix.JonixScanner.scan(JonixScanner.java:94)

What version of the product are you using? On what operating system?
JOnix 2.0 Reference tags/ Unix

Please provide any additional information below.


Regards,
RAjat

Original issue reported on code.google.com by rajat.mo...@gmail.com on 10 Mar 2015 at 9:21