int nuodb_resultset_next(struct nuodb *db, struct nuodb_resultset *rs,
int *has_values, struct nuodb_value values[]) {
ResultSet *resultSet = reinterpret_cast<ResultSet *>(rs);
try {
*has_values = resultSet->next();
if (*has_values) {
ResultSetMetaData *resultSetMetaData = resultSet->getMetaData();
int columnCount = resultSetMetaData->getColumnCount();
for (int i=0; i < columnCount; ++i) {
int64_t i64 = 0;
int32_t i32 = 0;
enum nuodb_value_type vt = NUODB_TYPE_NULL;
int columnIndex = i+1;
switch (resultSetMetaData->getColumnType(columnIndex)) {
case NUOSQL_NULL:
vt = NUODB_TYPE_NULL;
break;
case NUOSQL_TINYINT:
case NUOSQL_SMALLINT:
case NUOSQL_INTEGER:
case NUOSQL_BIGINT:
if (resultSetMetaData->getScale(columnIndex) == 0) {
i64 = resultSet->getLong(columnIndex);
if (!resultSet->wasNull()) {
vt = NUODB_TYPE_INT64;
}
break;
}
// fallthrough; must be fetched as a string
case NUOSQL_NUMERIC:
case NUOSQL_DECIMAL: {
const char *string = resultSet->getString(columnIndex);
if (!resultSet->wasNull()) {
vt = NUODB_TYPE_BYTES; // strings are returned as bytes
i64 = reinterpret_cast<int64_t>(string);
i32 = std::strlen(string);
}
break;
}
case NUOSQL_FLOAT:
case NUOSQL_DOUBLE: {
union {
double float64;
int64_t i64;
} value = { resultSet->getDouble(columnIndex) };
if (!resultSet->wasNull()) {
vt = NUODB_TYPE_FLOAT64;
i64 = value.i64;
}
break;
}
case NUOSQL_BIT:
case NUOSQL_BOOLEAN:
i64 = resultSet->getBoolean(columnIndex);
if (!resultSet->wasNull()) {
vt = NUODB_TYPE_BOOL;
}
break;
case NUOSQL_DATE:
case NUOSQL_TIME:
case NUOSQL_TIMESTAMP: {
Timestamp *ts = resultSet->getTimestamp(columnIndex);
if (ts && !resultSet->wasNull()) {
vt = NUODB_TYPE_TIME;
i64 = ts->getSeconds();
i32 = ts->getNanos();
}
break;
}
default: {
const Bytes b = resultSet->getBytes(columnIndex);
if (!resultSet->wasNull()) {
vt = NUODB_TYPE_BYTES;
i64 = reinterpret_cast<int64_t>(b.data);
i32 = b.length;
}
break;
}
}
values[i].i64 = i64;
values[i].i32 = i32;
values[i].vt = vt;
}
}
return 0;
} catch (SQLException &e) {
return setError(db, e);
}
}
