[jira] Updated: (UIMA-1817) xml namespace handling in XmiCasDocSerializer / NPE with Saxon in classpath

["Martin Schaffoener (JIRA)" <de...@uima.apache.org>]

     [ https://issues.apache.org/jira/browse/UIMA-1817?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martin Schaffoener updated UIMA-1817:
-------------------------------------

    Attachment: xmicasserializer-namespaces.patch

Patch with changes which solve the problems observed with Saxon9 on the classpath.

> xml namespace handling in XmiCasDocSerializer / NPE with Saxon in classpath
> ---------------------------------------------------------------------------
>
>                 Key: UIMA-1817
>                 URL: https://issues.apache.org/jira/browse/UIMA-1817
>             Project: UIMA
>          Issue Type: Bug
>          Components: Core Java Framework
>    Affects Versions: 2.3
>         Environment: Java 1.6.0_20, Saxon9 jars on the classpath
>            Reporter: Martin Schaffoener
>         Attachments: xmicasserializer-namespaces.patch
>
>
> While experimenting with UIMA I observed a problem similar to the one already posted here: http://tinyurl.com/32spzv9. Since removing Saxon from the classpath was not an option, I found the problem to be the way namespaces are handled in org.apache.uima.cas.impl.XmiCasSerializer$XmiCasDocSerializer.
> First of all, the addAttribute/3 method was incorrectly passing null as uri and localName parameters. According to the javadoc, these must at least be empty strings. I added a hack to extract the localName from the qName, if available.
> Second, the method computeNamespaceDeclarationAttrs/1 only added namespaces as attributes, which are not honored by Saxon. I think this is correct, as the SAX2 standard states that namespaces must be declared via startPrefixMapping/2, so I added that, as well.
> Attached you find a patch with changes which work for me (and seem to solve the problem).

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