sotransformToString - Python
I am trying to get the xls messages (xsl:message) using the following code:
xsltproc = proc.new_xslt30_processor() outputi = xsltproc.transform_to_string(source_file="source.xml", stylesheet_file="style.xsl") print(outputi) #This Works msg = xsltproc.get_xsl_messages()
And I get the following error:
/usr/lib/libsaxonhec.sotransformToString not found
#1 Updated by O'Neil Delpratt about 2 months ago
- Project changed from Saxon to Saxon/C
- Category changed from User error to Python Build
- Assignee set to O'Neil Delpratt
- Priority changed from Low to Normal
- Found in version set to 1.2.1
Thanks for reporting this issue. It looks like a bug in the JNI. Investigating it now
#2 Updated by O'Neil Delpratt about 2 months ago
I managed to reproduce the error message and it is bug.
The problem is the return type used in the internal JNI method signature in the C++ code is wrong. The bug has been fixed in a redesign of the xsl:message mechanism to make it more usable. This will be available in the next release, but as I workaround see below.
In the method
getXslMessage of the class file
Xslt30Processor.cpp we currently have the following:
jmethodID mID = (jmethodID) SaxonProcessor::sxn_environ->env->GetMethodID(cppClass, "getXslMessages", "()[Lnet/sf/saxon/s9api/XdmValue;");
Please replace it with the following:
jmethodID mID = (jmethodID) SaxonProcessor::sxn_environ->env->GetMethodID(cppClass, "getXslMessages", "()[Lnet/sf/saxon/s9api/XdmNode;");
I have also attached the file to this bug with the patch so you can just drop and replace the file if that is easier. Then rebuild the Saxon/C python extension again.
What actually happens to the xsl:messages by default is to output messages to the standard output console, but this does not find its way to python. As mentioned in the bug issue #4147 to capture the messages you will have to call
xsltproc.set_property('m', '') before you do the transformation. See example python code below which should work for you:
xsltproc = proc.new_xslt30_processor() xsltproc.set_property('m', '') #This flag creates a Message Listener which intercepts the messages to return `PyXdmNode` objects of the messages outputi = xsltproc.transform_to_string(source_file="source.xml", stylesheet_file="style.xsl") print(outputi) #This Works messages = xsltproc.get_xsl_messages() if messages is not None: i = 0 while i < messages.size: print(messages.item_at(i)) i += 1
get_xsl_message returns an
PyXdmValue of the individual messages which are
The PyXdmValue should be iterable. I will create another bug issue for this.
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