franta-hg@55: #include <cstdlib>
franta-hg@55: #include <wchar.h>
franta-hg@55: #include <locale.h>
franta-hg@55: #include <string>
franta-hg@55: 
franta-hg@55: #include <jni.h>
franta-hg@55: 
franta-hg@55: using namespace std;
franta-hg@55: 
franta-hg@55: /**
franta-hg@55:  * Spouští JVM z C++, volá statickou metodu ze standardní knihovny (System.currentTimeMillis()) a main() metodu programu SQL-DK
franta-hg@55:  * 
franta-hg@55:  * @param argc
franta-hg@55:  * @param argv
franta-hg@55:  * @return 
franta-hg@55:  */
franta-hg@55: int main(int argc, char** argv) {
franta-hg@55: 
franta-hg@55: 	setlocale(LC_ALL, "");
franta-hg@55: 
franta-hg@55: 	JavaVM *jvm;
franta-hg@55: 	JNIEnv *env;
franta-hg@55: 
franta-hg@55: 	JavaVMOption options[1];
franta-hg@55: 	char * home = getenv("HOME");
franta-hg@55: 
franta-hg@55: 	string classPath;
franta-hg@55: 	classPath.append("-Djava.class.path=");
franta-hg@55: 	classPath.append(home);
franta-hg@55: 	classPath.append("/projekty/SQL-DK/sql-dk/java/sql-dk/dist/sql-dk.jar");
franta-hg@55: 	classPath.append(":");
franta-hg@55: 	classPath.append(home);
franta-hg@55: 	classPath.append("/projekty/SQL-DK/sql-dk/java/jdbc-loopback-driver/dist/jdbc-loopback-driver.jar");
franta-hg@55: 
franta-hg@55: 	wprintf(L"classPath: %s\n", classPath.c_str());
franta-hg@55: 
franta-hg@55: 	options[0].optionString = new char[classPath.length() + 1];
franta-hg@55: 	copy(classPath.begin(), classPath.end(), options[0].optionString);
franta-hg@55: 
franta-hg@55: 	JavaVMInitArgs vm_args;
franta-hg@55: 	vm_args.version = JNI_VERSION_1_8;
franta-hg@55: 	vm_args.nOptions = 1;
franta-hg@55: 	vm_args.options = options;
franta-hg@55: 	vm_args.ignoreUnrecognized = false;
franta-hg@55: 
franta-hg@55: 	JNI_CreateJavaVM(&jvm, (void**) &env, &vm_args);
franta-hg@55: 
franta-hg@55: 	string className = "java/lang/System";
franta-hg@55: 
franta-hg@55: 	jclass cls = env->FindClass(className.c_str());
franta-hg@55: 	if (cls) {
franta-hg@55: 		string methodName = "currentTimeMillis";
franta-hg@55: 		jmethodID mid = env->GetStaticMethodID(cls, methodName.c_str(), "()J");
franta-hg@55: 
franta-hg@55: 		if (mid) {
franta-hg@55: 			jlong time = env->CallStaticLongMethod(cls, mid);
franta-hg@55: 			wprintf(L"Aktuální čas Javy: %d\n", time);
franta-hg@55: 
franta-hg@55: 		} else {
franta-hg@55: 			wprintf(L"Metoda nebyla nalezena: %s\n", methodName.c_str());
franta-hg@55: 		}
franta-hg@55: 	} else {
franta-hg@55: 		wprintf(L"Třída nebyla nalezena: %s\n", className.c_str());
franta-hg@55: 	}
franta-hg@55: 
franta-hg@55: 	delete cls; // TODO: jak čistit?
franta-hg@55: 
franta-hg@55: 	className = "info/globalcode/sql/dk/CLIStarter";
franta-hg@55: 	cls = env->FindClass(className.c_str());
franta-hg@55: 	if (cls) {
franta-hg@55: 		string methodName = "main";
franta-hg@55: 		jmethodID mid = env->GetStaticMethodID(cls, methodName.c_str(), "([Ljava/lang/String;)V");
franta-hg@55: 
franta-hg@55: 		if (mid) {
franta-hg@55: 			//jstring arg = env->NewStringUTF("--list-databases");
franta-hg@55: 			//jarray args = env->NewObjectArray(1, env->FindClass("java/lang/String"), arg);
franta-hg@55: 
franta-hg@56: 			jobjectArray args = env->NewObjectArray(10, env->FindClass("java/lang/String"), NULL);
franta-hg@56: 			int a = 0;
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("--db"));
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("loopback"));
franta-hg@56: 			//env->SetObjectArrayElement(args, a++, env->NewStringUTF("--sql-in")); // vyžaduje (libovolná) data na standardním vstupu
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("--sql"));
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("…"));
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("--data"));
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("2"));
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("a"));
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("b"));
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("c"));
franta-hg@56: 			env->SetObjectArrayElement(args, a++, env->NewStringUTF("d"));
franta-hg@55: 
franta-hg@55: 
franta-hg@55: 			for (int i = 0; i < 10; i++) {
franta-hg@55: 				env->CallStaticVoidMethod(cls, mid, args);
franta-hg@55: 				// FIXME: nefuguje – JVM ukončí proces → vlákna/procesy
franta-hg@55: 			}
franta-hg@55: 
franta-hg@55: 
franta-hg@55: 		} else {
franta-hg@55: 			wprintf(L"Metoda nebyla nalezena: %s\n", methodName.c_str());
franta-hg@55: 		}
franta-hg@55: 	} else {
franta-hg@55: 		wprintf(L"Třída nebyla nalezena: %s\n", className.c_str());
franta-hg@55: 	}
franta-hg@55: 
franta-hg@55: 	jvm->DestroyJavaVM();
franta-hg@55: 	return 0;
franta-hg@55: }
franta-hg@55: