Not sure if this the right place, but I can't seem to subscribe to the rJava
mailing list. Sorry for the noise.
I have a jar file in the CLASSPATH variable. On running .jinit and checking
.jclassPath, i can see the jar file containing the class. Yet when trying to
instantaite the class, i get a class not found error.
Now If if, create my own vm (see below), and then run .jinit (which will use
my vm), i can find the class in question (org.apache.hadoop.io.longwritable)
Is there some classloader problem in rJava?
==code==
void create_vm(const char *clap) {
char* classpath = (char*) calloc(18+strlen(clap)+1, sizeof(char));
sprintf(classpath,"-Djava.class.path=%s",clap);
JavaVMInitArgs args;
JavaVMOption options[2];
args.version = JNI_VERSION_1_4;
args.nOptions = 2;
options[0].optionString = classpath;
options[1].optionString = "-Xrs";
args.options = options;
args.ignoreUnrecognized = JNI_TRUE;
JavaVM *jvms[32];
jsize vms=0;
int r=0;
r=JNI_GetCreatedJavaVMs(jvms, 32, &vms);
if (r) {
error("JNI_GetCreatedJavaVMs returned %d\n", r);
} else {
if (vms>0) {
int i=0;
while (i<vms) {
if (jvms[i]) {
if (!(*jvms[i])->AttachCurrentThread(jvms[i], (void**)&jenv, NULL)) {
jvm=jvms[i];
break;
}
}
i++;
}
if (i==vms) error("Failed to attach to any existing JVM.");
}else {
JNI_CreateJavaVM(&jvm, (void **)&jenv, &args);
}
}
}
Saptarshi Guha
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