Forum OpenACS Q&A: nsjava improvements available

I've extended nsjava to allow static methods returning Strings from java. First application is including an exec replacement that works when nsjava is loaded; the builtin tcl exec gets frustrated by nsjava's signal handler and dies. I've also fixed some memory leaks in the old invocation code.

uploaded to new-file-storage

details for people familiar with the code

• includes my last patch for fixing running with JDK >= 1.2
• added CallJava.java
• CallJava does some of the work that was done in C before; also the ability to find methods returning Strings; fixed memory leaks in remaining NsJava_JavaEvalCmd code
• added ExecCmd.java and nsjava.tcl for the nsd library that handles the replacing of the builtin exec
• rm'd the unused remnants of envcache.c
• added evalSingle static method to NsTcl.java; handy when the NsTcl object isn't going to be re-used
• updated tcl-api in doc/ (but didn't rerun javadoc for NsTcl)

from the README:

for JNI 1.2, specify any JVM options directly, e.g.:
JavaOption="-Djava.class.path=/home/aolserver/bin/nsjava.jar:/web/prod/www/jbe_java"
JavaOption="-verbose:class"
JavaOption="-verbose:jni"
JavaOption="-verbose:gc"
(jni docs say "-verbose:class,jni,gc" is shorthand for the above 3 but it doesn't
actually work.)
JavaOption="-Xrs"