| 61 | |
| 62 | template <> |
| 63 | jobject convert(JNIEnv* env, const Log::Position& position) |
| 64 | { |
| 65 | const std::string& identity = position.identity(); |
| 66 | |
| 67 | const char* bytes = identity.c_str(); |
| 68 | |
| 69 | uint64_t temp = |
| 70 | ((uint64_t) (bytes[0] & 0xff) << 56) | |
| 71 | ((uint64_t) (bytes[1] & 0xff) << 48) | |
| 72 | ((uint64_t) (bytes[2] & 0xff) << 40) | |
| 73 | ((uint64_t) (bytes[3] & 0xff) << 32) | |
| 74 | ((uint64_t) (bytes[4] & 0xff) << 24) | |
| 75 | ((uint64_t) (bytes[5] & 0xff) << 16) | |
| 76 | ((uint64_t) (bytes[6] & 0xff) << 8) | |
| 77 | ((uint64_t) (bytes[7] & 0xff)); |
| 78 | |
| 79 | jlong jvalue = temp; // Java is expecting a long (i.e., signed). |
| 80 | |
| 81 | // We can create a Java Log.Position directly because JNI does not |
| 82 | // enforce access modifiers (thus breaking encapsulation). |
| 83 | jclass clazz = env->FindClass("org/apache/mesos/Log$Position"); |
| 84 | |
| 85 | jmethodID _init_ = env->GetMethodID(clazz, "<init>", "(J)V"); |
| 86 | |
| 87 | jobject jposition = env->NewObject(clazz, _init_, jvalue); |
| 88 | |
| 89 | return jposition; |
| 90 | } |
| 91 | |
| 92 | |
| 93 | template <> |