sql - Java JNI and ellipsis mess -

i have function in c adds row table. function takes arguments various orderings of ints, floats, , strings using ellipsis add_row(int arg1, int arg2, ...) , parses information based on how columns set up.

i need call function java , using jni. i'm not sure best way java's stricter typing. i've considered few solutions none of them seem / i'm not sure how implement them: passing strings, passing jobjectarray, or passing cell values 1 @ time.

any appreciated.

thanks,

ben

this less problem java , jni , more problem of how call var args function in c dynamic list of arguments. see calling c function varargs argument dynamically suggests having 2 versions of var args function (although think convention more allow passthrough of existing va_list, rather constructing 1 (which seems quite involved)).

the jni bit should define java native method object array arguments have c equivalent receiving array. use jni api convert values c equivalents (ints , ansi strings) load them var args structure , call vadd_row() function.

java:

package mypackage; public class myclass {     ...     public native void addrow(object[] args);     ... } 

c:

void vadd_row(int arg1, int arg2, va_list argp) {     ... function ... }  void add_row(int arg1, int arg2, ...) {     va_list argp;      va_start(argp, arg2);     vadd_row(int arg1, int arg2, argp);     va_end(argp); }   jniexport void jnicall mypackage_myclass_addrow(jnienv *env, jobject this, jint arg1, jint arg2, jobjectarray jarg_array) {     va_list argp;     /* need construct argp, see link below hints[1]; go through each element        of java array, object; convert primitive value or ansi string,        encode va_list */     vadd_row((int)arg1, (int)arg2, argp); } 

[1] https://bbs.archlinux.org/viewtopic.php?pid=238721

is worth hassle?

consider writing simpler c function receives arguments in array, create wrapper uses var args if needed.