WillAyd commented on code in PR #714:
URL: https://github.com/apache/arrow-adbc/pull/714#discussion_r1207596735
##########
c/driver/postgresql/connection.cc:
##########
@@ -72,12 +72,48 @@ class PqResultRow {
// as expected prior to iterating
class PqResultHelper {
public:
- PqResultHelper(PGconn* conn, const char* query) : conn_(conn) {
+ PqResultHelper(PGconn* conn, const char* query, std::vector<std::string>
param_values,
+ struct AdbcError* error)
+ : conn_(conn), param_values_(param_values), error_(error) {
query_ = std::string(query);
result_ = PQexec(conn_, query_.c_str());
+ for (auto data : param_values) {
+ param_lengths_.push_back(data.length());
+ }
+ }
+
+ AdbcStatusCode Prepare() {
+ // TODO: make stmtName a unique identifier?
Review Comment:
I noticed in the similar implementation in statement.cc that this uses an
empty string. Wondering if we should generate a random string for the lifetime
of the class so that there is no potential for races trying to execute prepared
statements
##########
c/driver/postgresql/connection.cc:
##########
@@ -146,15 +185,17 @@ class PqGetObjectsHelper {
}
AdbcStatusCode GetObjects() {
- PqResultHelper curr_db_helper = PqResultHelper{conn_, "SELECT
current_database()"};
- if (curr_db_helper.Status() == PGRES_TUPLES_OK) {
- assert(curr_db_helper.NumRows() == 1);
- auto curr_iter = curr_db_helper.begin();
- PqResultRow db_row = *curr_iter;
- current_db_ = std::string(db_row[0].data);
- } else {
- return ADBC_STATUS_INTERNAL;
- }
+ std::vector<std::string> _;
Review Comment:
This is pointless to add an empty vector. I'm guessing we should just add an
alternate constructor, but could also go in a separate class since the
Prepare/Execute interaction is overkill for something without parameters
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