Re: [tcljava-user] Class not found after successful class import.

[<PFi...@hb...>]

I can get around this problem by putting the appropriate jar file on the 
system class path.  But it;s strange that the "java::import" finds "
EmbeddedDriver" but the "java::call" fails unless the class is on the 
system class path. 

The  tcl classpath is set as follows. 

lappend x C:\\IBM\\Cloudscape_10.1\\lib\\derby.jar 
lappend x C:\\IBM\\Cloudscape_10.1\\lib\\derbyclient.jar 
lappend x C:\\IBM\\Cloudscape_10.1\\lib\\derbynet.jar 
lappend x C:\\IBM\\Cloudscape_10.1\\lib\\derbytools.jar 

set env(TCL_CLASSPATH) $x

I tried various forward and back slash combinations.  None of then worked. 


I also tried modifying the classpath variable within the script but that 
did not work either. 

set CLASSPATHList [ split [ lindex [ array get env CLASSPATH ] 1 ] ";" ]
lappend CLASSPATHList $x 
set env(CLASSPATH) $CLASSPATHList

puts "\nNew CLASSPATH is...............\n"

foreach i [ split [ lindex [ array get env CLASSPATH ] 1 ] ";" ] {
    puts [ format "%-5s %-50s" " " $i ] 
}

Has anyone else had issues like this on Windows XP.  I really don't want 
to have to put all the required jar files on the system class path.


Regards.


PATRICK FINNEGAN.
WebSphere Consultant.
HBF Web Master
LDAP Administrator.




<PFi...@hb...> 
Sent by: tcl...@li...
17/11/2005 12:42 PM
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Subject
[tcljava-user] Class not found after successful class import.






The following code is executed inside a proc.  The "EmbeddedDriver" class 
is imported successfully but attempts to call it generate a class not 
found error. 


# import required classes 
   java::import org.apache.derby.jdbc.EmbeddedDriver
   java::import org.apache.derby.drda.NetworkServerControl
   java::import org.apache.derby.jdbc.ClientDriver
   java::import java.sql.Connection
   java::import java.sql.DriverManager
   java::import java.sql.ResultSet
   java::import java.sql.SQLWarning
   java::import java.sql.Statement
   java::import java.sql.ResultSetMetaData 

   puts "\nimported classes are:\n"
 
   foreach i [java::import] {
 
      puts [ format "%-5s %-50s" " " $i ] 

   }

This generates ==>

imported classes are:

      org.apache.derby.drda.NetworkServerControl
      java.sql.DriverManager
      org.apache.derby.jdbc.ClientDriver
      java.sql.ResultSetMetaData
      java.sql.Statement
      org.apache.derby.jdbc.EmbeddedDriver
      java.sql.ResultSet
      java.sql.Connection
      java.sql.SQLWarning


The  JAVA call fails.
 
java::call Class forName org.apache.derby.jdbc.EmbeddedDriver


*** Stack trace is:

java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver
        at java.net.URLClassLoader.findClass(URLClassLoader.java:375)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:562)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:442)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:494)
        at java.lang.Class.forName1(Native Method)
        at java.lang.Class.forName(Class.java:180)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:85)




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