|Message: How to catch G4Exceptions ?||Not Logged In (login)|
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I'd like to know a clean way to properly catch a G4Exception. Namely, I use GDML geometries and I'd like to catch the exception which is thrown when validation is on and when I have no network connexion. This exception leads to the following message :
G4GDML: VALIDATION ERROR! fatal error during schema scan at line: 2
-------- EEEE ------- G4Exception-START -------- EEEE ------- *** G4Exception : InvalidRead issued by : G4GDMLRead::Read() ERROR - Empty document or unable to validate schema! Check Internet connection is ON in case of schema validation enabled and location defined as URL in the GDML file - geometries/thin_cylinder_vacuum_geometry.gdml - being imported! Otherwise, verify GDML schema server is reachable! *** Fatal Exception *** core dump *** **** Track information is not available at this moment **** Step information is not available at this moment
-------- EEEE -------- G4Exception-END --------- EEEE -------
*** G4Exception: Aborting execution ***
My idea is to put the call to G4GDMLParser::Read() into a "try" block and then in the "catch" block, try to Read the file again, but with schema validation turned off.
I do not use exceptions very often so I don't really know how to use G4Exceptions.
Any help would be really appreciated !
Thanks a lot, Julien
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