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#include "pq-prepared.h"
#include "pq-connection.h"
PQ::PreparedStatement::PreparedStatement(Connection * c, const std::string & sql, unsigned int no, const DB::CommandOptions * opts) :
DB::Command(sql),
Command(c, sql, no),
hash(opts && opts->hash ? *opts->hash : std::hash<std::string>()(sql)),
pstmt(nullptr)
{
}
const char *
PQ::PreparedStatement::prepare() const
{
if (pstmt) {
return pstmt;
}
auto i = c->preparedStatements.find(hash);
if (i != c->preparedStatements.end()) {
return (pstmt = i->second.c_str());
}
std::stringstream psql;
prepareSql(psql, sql);
c->checkResultFree(PQprepare(
c->conn, stmntName.c_str(), psql.str().c_str(), values.size(), NULL), PGRES_COMMAND_OK);
return (pstmt = c->preparedStatements.insert({hash, stmntName}).first->second.c_str());
}
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