DO NOT REPLY [Bug 31883] New: - Better JNI support

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http://issues.apache.org/bugzilla/show_bug.cgi?id=31883

Better JNI support

           Summary: Better JNI support
           Product: Tomcat 5
           Version: 5.0.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Other
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: junk@bbs.darktech.org


Hi,

Currently the only way to use JNI under Tomcat is to invoke System.loadLibrary()
outside the application. This is a documented release-note; it is also a
deployment nightmare.

I propose Tomcat provide a new mechanism whereby webapps can identify classes
loading libraries, and those classes can be instantiated from within a parent
classloader. The key is that we should be able to bundle these classes as part
of a deployment WAR file without having to deploy stuff into Tomcat's system
libraries directory. It would also be nice (although not strictly necessary at
this stage) to be able to detect all applications that make use of the native
class, so that one could unmount them all, replace the DLL, and remount them
all, without restarting all of Tomcat. If you want to get *really* fancy,
intercept all calls to System.loadLibrary() automatically, and use the
appropriate classloader on-the-fly without needing the user to explicitly point
out any classes.

This issue is meant to be a focus of discussion and fuel feedback from the
community.

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