From: <cl...@br...> - 2012-02-03 18:42:18
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Dear Chris, The present "classPathHack" has nothing to do with the Jython language, its a tweak for the Java classpath itself, which allows to dynamically append a .jar file after the JVM was already initialized. It fixes a few of the classes in Java that might show problems using reflection. This classPathHacker code is well known under Java, I simply rewrote it in a Jython syntax. If the hack did not work, the issue relates clearly to class loader of the Jython 2.2.1 version. Hope the work-around with the redundant import you found, gives you a chance to live with the problem. Regards, Claude Claude Falbriard Certified IT Specialist L2 - Middleware AMS Hortolândia / SP - Brazil phone: +55 13 9760 0453 cell: +55 13 8117 3316 e-mail: cl...@br... From: Chris Clark <Chr...@ac...> To: cl...@br... Cc: Jyt...@li... Date: 03/02/2012 16:10 Subject: Re: [Jython-users] import failures of core java libraries with Jython 2.2.1 Thanks for taking a look Claude, were you able to use your class path hacker to import the core libraries I was unable to load? If so, can you show a demo so I can see what you did. I've a similar class path hacker in jyjdbc which works for the 2.2 and 2.5 series (I posted something a while back to the list as the Jython book version doesn't work on all versions of 2.5.*) so I'll probably end up using that if this is a classpath issue. One interesting discovery is that whilst awt fails to import, there appears to be a way to make it work (I saw some code in http://code.google.com/p/jythonconsole/ which inspired the following kludge): C:\jythonconsole_svnhg>java -jar c:\jython2.2.1\jython.jar Jython 2.2.1 on java1.6.0_21 Type "copyright", "credits" or "license" for more information. >>> import java.awt Traceback (innermost last): File "<console>", line 1, in ? ImportError: no module named awt >>> from java.awt import Color, Font, Point >>> import java.awt >>> NOTE the second attempt to import awt works fine :-S This then appears to allow import of pawt too. Similarly something can be done for sql too: >>> import java.sql Traceback (innermost last): File "<console>", line 1, in ? ImportError: no module named sql >>> from java.sql import Types >>> import java.sql >>> That also works! I'll probably go with redundant imports as a workaround unless anyone has ideas/comments. Thanks Chris ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Jython-users mailing list Jyt...@li... https://lists.sourceforge.net/lists/listinfo/jython-users |