Le lundi 29 octobre 2007 17:02, Frédéric Mantegazza a écrit :
I have a problem with a XSLT filter:
Traceback (most recent call last): File "/home/pymad/PyMAD/server/macros/freeScan.py", line 247, in doAction DataManager().newScanPoint(numPoint, 'NSF') File "/home/pymad/PyMAD/server/managers/dataManager.py", line 253, in newScanPoint self.__scan.setPoint(numPoint, numPal) File "/home/pymad/PyMAD/server/data/scanData.py", line 221, in setPoint self.__serialize() File "/home/pymad/PyMAD/server/data/scanData.py", line 196, in __serialize filter_.dumpScan(self.__tree, self.__scanBaseName) File "/home/pymad/PyMAD/server/data/dataFilters.py", line 122, in dumpScan result = self.__xslFilter.apply(tree, fileName="'%s'" % baseName) File "xslt.pxi", line 450, in etree.XSLT.apply File "xslt.pxi", line 356, in etree.XSLT.__call__ RuntimeError: stylesheet is not usable in this thread
This error ocurs on a machine, and not on another, which has the same install (debian etch, lxml 1.1.1).
Ok, I think I found the problem, but not the solution. I'm using lxml in a client/server app, based on Pyro. The first time I instanciate all my XSLT filters, I'm in a the main thread. Then, I can use them in other threads, and it works fine. But I have some commands to create a new session in the DataManger, and I then re-instanciate all XSLT filters (with different params). But here, I'm not in the main thread anymore! And it seems that if XSLT filters are instanciated in threads, they can't be used in other thread. Is this analyse correct? Is there a workarround ? -- Frédéric