jlongArray Java_com_spotify_voyager_jni_Index_addItems___3_3F_3JI()

in java/com_spotify_voyager_jni_Index.cpp [397:419]

• 21 lines of code
• 3 McCabe index (conditional complexity)

jlongArray Java_com_spotify_voyager_jni_Index_addItems___3_3F_3JI(
    JNIEnv *env, jobject self, jobjectArray vectors, jlongArray ids,
    jint numThreads) {
  try {
    std::shared_ptr<Index> index = getHandle<Index>(env, self);
    std::vector<hnswlib::labeltype> nativeIds = index->addItems(
        toNDArray(env, vectors), toUnsignedStdVector(env, ids), numThreads);

    // Allocate a Java long array for the IDs:
    static_assert(
        sizeof(hnswlib::labeltype) == sizeof(jlong),
        "addItems expects hnswlib::labeltype to be a 64-bit integer.");
    jlongArray javaIds = env->NewLongArray(nativeIds.size());
    env->SetLongArrayRegion(javaIds, 0, nativeIds.size(),
                            (jlong *)nativeIds.data());
    return javaIds;
  } catch (std::exception const &e) {
    if (!env->ExceptionCheck()) {
      env->ThrowNew(env->FindClass("java/lang/RuntimeException"), e.what());
    }
  }
  return nullptr;
}