Bug #1620
closed
xsl:function call intermittently returns no results
0%
Description
Calls to the function <xsl:function name="w2e:type-to-example"> in the attached code fail to return correct results (e.g. system datetime() value - intermittently.
Notice several other system functions are called too - such as random.
This may be some timing issue and could be present in early versions of Saxon - but this particular version release seems to repeatedly fail.
Problem occurs both with OxygenXML v14 and with CAM Editor - both are using Xerces for XML parsing.
Files
Updated by Michael Kay about 12 years ago
- Status changed from New to In Progress
First, I'll capture here some of the information that has arrived in direct email.
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DRRW:
I just ran the template on my Ubuntu 12.04 system with Oxygen 14 and Saxon 9.4.0.3 and it worked perfectly!
OMG - so my hunch appears correct - that this is a Windows platform issue then - must be something to do with timings and calls to external Java functions for date/time and random, wait until those return before processing continues.
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Radu Coravu, oXygen:
Both on Windows and Linux an Oxygen kit is available either with the Java VM 64-bit or with the Java VM 32-bit.
David, if you are using the 64-bit Oxygen kit on Windows, could you also try to install the 32-bit kit and try to reproduce the same problem?
About 2 months ago I noticed some strange behavior in which the FO processor RenderX XEP was started from Oxygen using the 64-bit Java VM and parsed using SAX an XSL-FO file, it randomly did not correctly report certain attribute values for certain elements. The Java 64-bit VM tries to optimize code which is run very often and there have been situations in the past in which these optimizations made the code not predictable.
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Dave, could I confirm what I am looking for here?
I'm transforming HospitalStatus-lookups-new.cxf using cam-2-example.xsl. This generates a primary result file and three secondary result documents called testexample-1.xml, testexample-2.xml, and testexample-3.xml. I tried comparing testexample-1.xml with the supplied corrrect-testexample-1.xml and error-2-testexample-1.xml and it doesn't seem to be the same as either.
However, I have established that testexample-1 is different depending on whether I run with Saxon 9.4.0.4 or with 9.1.0.8, so I guess this means I am seeing the problem. The first significant difference is that on the element, 9.1.0.8 gives different attributes (both names and values differ). So I'll try and investigate that.
Updated by Michael Kay about 12 years ago
I have confirmed that 9.4.0.4 gives different results depending on whether this is run with the JDK internal parser (com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl) or the Apache Xerces parser (org.apache.xerces.jaxp.SAXParserImpl).
So it seems to be down to the buggy JDK parser.
Updated by Michael Kay about 12 years ago
- Status changed from In Progress to Rejected
- Found in version changed from 9.4.0.3 to 9.4
Closing this on the basis that it appears to be caused by a bug in the JDK XML parser, which can be avoided by using the Apache Xerces parser instead.
(Please re-open if the issue is not resolved)
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