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From "Jukka Zitting (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (TIKA-578) XMLParser ContentHandler: multiple endDocument calls
Date Wed, 19 Jan 2011 14:04:44 GMT

     [ https://issues.apache.org/jira/browse/TIKA-578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jukka Zitting resolved TIKA-578.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 0.9
         Assignee: Jukka Zitting

Good point, thanks! Fixed in revision 1060818.

> XMLParser ContentHandler: multiple endDocument calls
> ----------------------------------------------------
>
>                 Key: TIKA-578
>                 URL: https://issues.apache.org/jira/browse/TIKA-578
>             Project: Tika
>          Issue Type: Bug
>          Components: parser
>    Affects Versions: 0.8
>         Environment: N/A
>            Reporter: Scott Severtson
>            Assignee: Jukka Zitting
>             Fix For: 0.9
>
>
> When supplying a ContentHandler to a XMLParser instance, the ContentHandler's .endDocument()
method is called twice; once by the SAXParser created within XMLParser, once explicitly by
XMLParser itself. 
> Sample code:
> ---
> InputStream inputStream = ...
> XMLParser parser = new DcXMLParser();
> ParseContext context = new ParseContext();
> Metadata metadata = new Metadata();
> DOMResult result = new DOMResult();
> TransformerHandler transformerHandler = ((SAXTransformerFactory) SAXTransformerFactory.newInstance()).newTransformerHandler();
> transformerHandler.setResult(result);
> parser.parse(inputStream, transformerHandler, metadata, context);
> ---
> The following exception is produced:
> ---
> java.util.EmptyStackException
> 	at java.util.Stack.peek(Stack.java:85)
> 	at java.util.Stack.pop(Stack.java:67)
> 	at com.sun.org.apache.xalan.internal.xsltc.trax.SAX2DOM.endDocument(SAX2DOM.java:143)
> 	at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endDocument(ToXMLSAXHandler.java:181)
> 	at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerHandlerImpl.endDocument(TransformerHandlerImpl.java:231)
> 	at org.apache.tika.sax.ContentHandlerDecorator.endDocument(ContentHandlerDecorator.java:115)
> 	at org.apache.tika.sax.XHTMLContentHandler.endDocument(XHTMLContentHandler.java:212)
> 	at org.apache.tika.parser.xml.XMLParser.parse(XMLParser.java:71)
> 	...
> ---
> We have worked around the issue temporarily by passing in a ContentHandler that eats
the first .endDocument() call, and allows the second to go through. However, we believe XMLParser
should hide the extraneous .endDocument() call internally.

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