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https://issues.apache.org/jira/browse/DERBY-2739?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen updated DERBY-2739:
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Attachment: ns-npe.diff
Here's a test case for the previously mentioned issue with
PrefixResolverDefault. The comments in the code mentioned that we'd get NPEs if
we didn't have a prefix resolver, but none of the tests failed if the resolver
was removed. The attached patch (ns-npe.diff) exposes this problem by executing
an XPath query that contains a function call prefixed by a namespace.
The expected result in the test case is a failure during compilation of the
query, and that's exactly what we see. If the PrefixResolverDefault object
isn't provided, though, the query is compiled successfully. Instead, it fails
during execution with a NullPointerException hidden deep down in its exception
chain.
The changes in the xml-interfaces.diff patch don't make this test case fail,
even though it doesn't explicitly provide a resolver, so it looks like we don't
need any special handling of this problem in the new code.
Committed the new test case to trunk with revision 1054991.
> Automatically detect and use the Xalan which is included in Sun's Java 1.5.0
> and higher
> ---------------------------------------------------------------------------------------
>
> Key: DERBY-2739
> URL: https://issues.apache.org/jira/browse/DERBY-2739
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 10.3.1.4
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Priority: Minor
> Attachments: infinity-NaN.diff, ns-npe.diff, numeric-tests.diff,
> xml-interfaces.diff
>
>
> Sun's Java 1.5.0 and higher includes Xalan, but Derby doesn't find it because
> it has been moved to a non-standard package. Derby should be able to detect
> and use these classes if it cannot find Xalan in the standard package on the
> classpath. This would make it easier for many users to start using Derby's
> XML features.
> See also the discussion in this thread:
> <URL:http://mail-archives.apache.org/mod_mbox/db-derby-dev/200705.mbox/%[email protected]%3e>
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