[Sablevm-developer] Does SableVM exclude gnu.regex from its classpath?

[Roman K. <ro...@on...>]

Hi list.

I have come across a strange thing: While testing my application
knowledge-tracking, I got an exception:

java.lang.NoClassDefFoundError
   at java.lang.Class.initialize (Class.java:124)
   at java.util.regex.Pattern.Pattern (Pattern.java:88)
   at java.util.regex.Pattern.compile (Pattern.java:144)
   at java.util.regex.Pattern.compile (Pattern.java:126)
   at java.lang.String.replaceAll (String.java:1177)
   at com.knowledgetracking.nb.NBClass.learnFromText (NBClass.java:82)
   at com.knowledgetracking.nb.ClassificationScheme.learnFromText
(ClassificationScheme.java:141)
   at com.knowledgetracking.nb.NBEngine.learn (NBEngine.java:75)
   at com.knowledgetracking.nb.NBEngine.learn (NBEngine.java:37)
   at com.knowledgetracking.cli.learn.invoke (learn.java:29)
   at com.knowledgetracking.cli.learn.invoke (learn.java:45)
   at java.lang.reflect.Method.invokeNative (Method.java)
   at java.lang.reflect.Method.invoke (Method.java:556)
   at bsh.Reflect.invokeOnMethod (Unknown Source)
   at bsh.Reflect.invokeStaticMethod (Unknown Source)
   at bsh.Reflect.invokeCompiledCommand (Unknown Source)
   at bsh.Name.invokeLocalMethod (Unknown Source)
   at bsh.Name.invokeMethod (Unknown Source)
   at bsh.BSHMethodInvocation.eval (Unknown Source)
   at bsh.BSHPrimaryExpression.eval (Unknown Source)
   at bsh.BSHPrimaryExpression.eval (Unknown Source)
   at bsh.Interpreter.eval (Unknown Source)
   at bsh.Interpreter.source (Unknown Source)
   at bsh.Interpreter.main (Unknown Source)
   at java.lang.VirtualMachine.invokeMain (VirtualMachine.java)
   at java.lang.VirtualMachine.main (VirtualMachine.java:92)

looking at the code in java.util.regex.Pattern, it is clear that
gnu.regex.RESyntax is not found. Strange thing is, that gnu.regex is in
SableVM-Classpath and installed properly (I checked this). When I
explicitly include the path to SableVM-Classpath in the java-sablevm call,
then things work out right.

The good thing is, with this hack, and with the small patch I submitted to
Classpath-Bugreports for URLStreamHandler, my app seems to work fine with
SableVM. And this is a good sign, since this includes quite some
technologies, like JDBC (with MySQL driver), XML, Castor, and some of
libcommons-*.

Cheers,
/Roman