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entity query and record progress

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sascha
2024-03-04 20:09:39 +01:00
parent 830185c3c5
commit be610ffcad
31 changed files with 294 additions and 50 deletions
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backends/postgres/src/postgres_connection.cpp
+5 -6
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@@ -51,14 +51,13 @@ std::unique_ptr<sql::query_result_impl> postgres_connection::fetch(const std::st
throw_postgres_error(res, conn_, "postgres", stmt);
sql::record prototype;
std::vector<sql::column_definition> prototype;
auto num_col = PQnfields(res);
for (int i = 0; i < num_col; ++i) {
const char *col_name = PQfname(res, i);
auto type = PQftype(res, i);
auto size = PQfmod(res, i);
// std::cout << "column " << col_name << ", type " << type << " (size: " << size << ")\n";
prototype.append(sql::column_definition{col_name});
prototype.emplace_back(col_name);
}
return std::move(std::make_unique<sql::query_result_impl>(std::make_unique<postgres_result_reader>(res), std::move(prototype)));
}
@@ -131,7 +130,7 @@ sql::data_type_t string2type(const char *type)
}
}
sql::record postgres_connection::describe(const std::string &table)
std::vector<sql::column_definition> postgres_connection::describe(const std::string &table)
{
std::string stmt(
"SELECT ordinal_position, column_name, udt_name, data_type, is_nullable, column_default FROM information_schema.columns WHERE table_schema='public' AND table_name='" + table + "'");
@@ -141,7 +140,7 @@ sql::record postgres_connection::describe(const std::string &table)
throw_postgres_error(res, conn_, "postgres", stmt);
postgres_result_reader reader(res);
sql::record prototype;
std::vector<sql::column_definition> prototype;
while (reader.fetch()) {
char *end = nullptr;
// Todo: Handle error
@@ -156,7 +155,7 @@ sql::record postgres_connection::describe(const std::string &table)
null_opt = sql::null_option::NOT_NULL;
}
// f.default_value(res->column(4));
prototype.append({name, type, utils::null_attributes, null_opt, index});
prototype.emplace_back(name, type, utils::null_attributes, null_opt, index);
}
return std::move(prototype);