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LibSQL+SQLServer: Return the new Result class from statement executions

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We can now TRY anything that returns a SQL::Result or an AK::Error.
This commit is contained in:
Timothy Flynn 2022-02-09 15:57:57 -05:00 • committed by Linus Groh
parent d9055de7ea
commit 6620f19979
11 changed files with 337 additions and 337 deletions
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47
Userland/Services/SQLServer/SQLStatement.cpp
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@ -33,22 +33,22 @@ SQLStatement::SQLStatement(DatabaseConnection& connection, String sql)
s_statements.set(m_statement_id, *this);
}
void SQLStatement::report_error(SQL::SQLError error)
void SQLStatement::report_error()
{
dbgln_if(SQLSERVER_DEBUG, "SQLStatement::report_error(statement_id {}, error {}", statement_id(), error.to_string());
dbgln_if(SQLSERVER_DEBUG, "SQLStatement::report_error(statement_id {}, error {}", statement_id(), m_result->error_string());
auto client_connection = ClientConnection::client_connection_for(connection()->client_id());
m_statement = nullptr;
m_result = nullptr;
remove_from_parent();
s_statements.remove(statement_id());
if (!client_connection) {
remove_from_parent();
if (client_connection)
client_connection->async_execution_error(statement_id(), (int)m_result->error(), m_result->error_string());
else
warnln("Cannot return execution error. Client disconnected");
warnln("SQLStatement::report_error(statement_id {}, error {}", statement_id(), error.to_string());
m_result = nullptr;
return;
}
client_connection->async_execution_error(statement_id(), (int)error.code, error.to_string());
m_result = nullptr;
m_statement = nullptr;
m_result = {};
}
void SQLStatement::execute()
@ -60,18 +60,21 @@ void SQLStatement::execute()
return;
}
deferred_invoke([this]() {
auto maybe_error = parse();
if (maybe_error.has_value()) {
report_error(maybe_error.value());
deferred_invoke([this]() mutable {
m_result = parse();
if (m_result.has_value()) {
report_error();
return;
}
VERIFY(!connection()->database().is_null());
m_result = m_statement->execute(connection()->database().release_nonnull());
if (m_result->error().code != SQL::SQLErrorCode::NoError) {
report_error(m_result->error());
if (m_result->is_error()) {
report_error();
return;
}
auto client_connection = ClientConnection::client_connection_for(connection()->client_id());
if (!client_connection) {
warnln("Cannot return statement execution results. Client disconnected");
@ -85,13 +88,13 @@ void SQLStatement::execute()
});
}
Optional<SQL::SQLError> SQLStatement::parse()
Optional<SQL::Result> SQLStatement::parse()
{
auto parser = SQL::AST::Parser(SQL::AST::Lexer(m_sql));
m_statement = parser.next_statement();
if (parser.has_errors()) {
return SQL::SQLError { SQL::SQLErrorCode::SyntaxError, parser.errors()[0].to_string() };
}
if (parser.has_errors())
return SQL::Result { SQL::SQLCommand::Unknown, SQL::SQLErrorCode::SyntaxError, parser.errors()[0].to_string() };
return {};
}