static jint initializeJavaVM(JVMOptList *optList)
{
jint jstat;
JavaVMInitArgs vm_args;
if(pljava_debug)
{
elog(INFO, "Backend pid = %d. Attach the debugger and set pljava_debug to false to continue", getpid());
while(pljava_debug)
pg_usleep(1000000L);
}
vm_args.nOptions = optList->size;
vm_args.options = optList->options;
vm_args.version = JNI_VERSION_1_4;
vm_args.ignoreUnrecognized = JNI_FALSE;
elog(DEBUG2, "creating Java virtual machine");
jstat = JNI_createVM(&s_javaVM, &vm_args);
if(jstat == JNI_OK && JNI_exceptionCheck())
{
JNI_exceptionDescribe();
JNI_exceptionClear();
jstat = JNI_ERR;
}
JVMOptList_delete(optList);
return jstat;
}
Datum Function_invokeTrigger(Function self, PG_FUNCTION_ARGS)
{
jvalue arg;
Datum ret;
arg.l = TriggerData_create((TriggerData*)fcinfo->context);
if(arg.l == 0)
return 0;
currentInvocation->function = self;
Type_invoke(self->func.nonudt.returnType, self->clazz, self->func.nonudt.method, &arg, fcinfo);
fcinfo->isnull = false;
if(JNI_exceptionCheck())
ret = 0;
else
{
/* A new Tuple may or may not be created here. If it is, ensure that
* it is created in the upper SPI context.
*/
MemoryContext currCtx = Invocation_switchToUpperContext();
ret = PointerGetDatum(TriggerData_getTriggerReturnTuple(arg.l, &fcinfo->isnull));
/* Triggers are not allowed to set the fcinfo->isnull, even when
* they return null.
*/
fcinfo->isnull = false;
MemoryContextSwitchTo(currCtx);
}
JNI_deleteLocalRef(arg.l);
return ret;
}
/**
* Initialize the session
*/
static void initJavaSession(void)
{
jclass sessionClass = PgObject_getJavaClass("org/postgresql/pljava/internal/Session");
jmethodID init = PgObject_getStaticJavaMethod(sessionClass, "init", "()J");
mainThreadId = JNI_callStaticLongMethod(sessionClass, init);
JNI_deleteLocalRef(sessionClass);
if(JNI_exceptionCheck())
{
JNI_exceptionDescribe();
JNI_exceptionClear();
ereport(ERROR, (
errcode(ERRCODE_INTERNAL_ERROR),
errmsg("Unable to initialize java session")));
}
}
/**
* Initialize security
*/
void Backend_setJavaSecurity(bool trusted)
{
if(trusted != s_currentTrust)
{
/* GCJ has major issues here. Real work on SecurityManager and
* related classes has just started in version 4.0.0.
*/
#ifndef GCJ
JNI_callStaticVoidMethod(s_Backend_class, s_setTrusted, (jboolean)trusted);
if(JNI_exceptionCheck())
{
JNI_exceptionDescribe();
JNI_exceptionClear();
ereport(ERROR, (
errcode(ERRCODE_INTERNAL_ERROR),
errmsg("Unable to initialize java security")));
}
#endif
s_currentTrust = trusted;
}
}
Datum _String_coerceObject(Type self, jobject jstr)
{
char* tmp;
Datum ret;
if(jstr == 0)
return 0;
jstr = JNI_callObjectMethod(jstr, s_Object_toString);
if(JNI_exceptionCheck())
return 0;
tmp = String_createNTS(jstr);
JNI_deleteLocalRef(jstr);
ret = FunctionCall3(
&((String)self)->textInput,
CStringGetDatum(tmp),
ObjectIdGetDatum(((String)self) -> Type_extension.typeId /* elementType */ ),
Int32GetDatum(-1));
pfree(tmp);
return ret;
}
