CAMLprim value mapi_get_name_stub(value ml_handle, value ml_index)
{
int index = Int_val(ml_index);
MapiHdl handle = (MapiHdl) ml_handle;
assert(index < mapi_get_field_count(handle));
char *fname = mapi_get_name(handle, index);
if (fname) {
return Val_some(caml_copy_string(fname));
} else {
return Val_none;
}
}
CAMLprim value mapi_fetch_field_list_stub(value handle)
{
CAMLparam1(handle);
CAMLlocal2(cli, cons);
char **fields = mapi_fetch_field_array((MapiHdl) handle);
int nr_fields = mapi_get_field_count((MapiHdl) handle);
if (fields != NULL) {
cli = Val_emptylist;
int i = 0;
for (i = (nr_fields - 1); i >= 0; --i) {
cons = caml_alloc(2, 0);
Store_field(cons, 0, caml_copy_string(fields[i]));
Store_field(cons, 1, cli);
cli = cons;
}
CAMLreturn(Val_some(cli));
} else {
CAMLreturn(Val_none);
}
}
CAMLprim value mapi_get_field_count_stub(value handle)
{
return Val_int(mapi_get_field_count((MapiHdl) handle));
}
int
main(int argc, char **argv)
{
Mapi dbh;
MapiHdl hdl = NULL;
mapi_int64 rows, i;
char *parm[] = { "peter", 0 };
char *parm2[] = { "25", 0 };
int j;
if (argc != 4) {
printf("usage:%s <host> <port> <language>\n", argv[0]);
exit(-1);
}
dbh = mapi_connect(argv[1], atoi(argv[2]), "monetdb", "monetdb", argv[3], NULL);
if (dbh == NULL || mapi_error(dbh))
die(dbh, hdl);
/* mapi_trace(dbh, 1); */
if (strcmp(argv[3], "sql") == 0) {
/* switch of autocommit */
if (mapi_setAutocommit(dbh, 0) != MOK || mapi_error(dbh))
die(dbh,NULL);
if ((hdl = mapi_query(dbh, "create table emp(name varchar(20), age int)")) == NULL || mapi_error(dbh))
die(dbh, hdl);
if (mapi_close_handle(hdl) != MOK)
die(dbh, hdl);
if ((hdl = mapi_query(dbh, "insert into emp values('John', 23)")) == NULL || mapi_error(dbh))
die(dbh, hdl);
if (mapi_close_handle(hdl) != MOK)
die(dbh, hdl);
if ((hdl = mapi_query(dbh, "insert into emp values('Mary', 22)")) == NULL || mapi_error(dbh))
die(dbh, hdl);
if (mapi_close_handle(hdl) != MOK)
die(dbh, hdl);
if ((hdl = mapi_query(dbh, "select * from emp")) == NULL || mapi_error(dbh))
die(dbh, hdl);
} else if (strcmp(argv[3], "mal") == 0) {
if ((hdl = mapi_query(dbh, "emp := bat.new(:oid,:str);")) == NULL || mapi_error(dbh))
die(dbh, hdl);
if ((hdl = mapi_query(dbh, "age := bat.new(:oid,:int);")) == NULL || mapi_error(dbh))
die(dbh, hdl);
if (mapi_close_handle(hdl) != MOK)
die(dbh, hdl);
if ((hdl = mapi_query_array(dbh, "bat.append(emp,\"?\");", parm)) == NULL || mapi_error(dbh))
die(dbh, hdl);
if ((hdl = mapi_query_array(dbh, "bat.append(age,?);", parm2)) == NULL || mapi_error(dbh))
die(dbh, hdl);
if (mapi_close_handle(hdl) != MOK)
die(dbh, hdl);
if ((hdl = mapi_query(dbh, "io.print(emp,age);")) == NULL || mapi_error(dbh))
die(dbh, hdl);
} else {
fprintf(stderr, "%s: unknown language, only mal and sql supported\n", argv[0]);
exit(1);
}
/* Retrieve all tuples in the client cache first */
rows = mapi_fetch_all_rows(hdl);
if (mapi_error(dbh))
die(dbh, hdl);
printf("rows received " LLFMT " with %d fields\n", rows, mapi_get_field_count(hdl));
/* Interpret the cache as a two-dimensional array */
for (i = 0; i < rows; i++) {
if (mapi_seek_row(hdl, i, MAPI_SEEK_SET) || mapi_fetch_row(hdl) == 0)
break;
for (j = 0; j < mapi_get_field_count(hdl); j++) {
printf("%s=%s ", mapi_get_name(hdl, j), mapi_fetch_field(hdl, j));
}
printf("\n");
}
if (mapi_error(dbh))
die(dbh, hdl);
if (mapi_close_handle(hdl) != MOK)
die(dbh, hdl);
mapi_destroy(dbh);
return 0;
}