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SQLServer: Remove Core::EventReceiver parent from SQLStatement

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This relationship was only used to provide factory methods and a parent-
child relationship between SQLStatement and DatabaseConnection.
This commit is contained in:
Timothy Flynn 2023-08-07 12:09:30 -04:00 • committed by Tim Flynn
parent 3ea4c56d04
commit 08d77ca6b1
3 changed files with 13 additions and 16 deletions
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2
Userland/Services/SQLServer/ConnectionFromClient.cpp
View file

@ -87,7 +87,7 @@ Messages::SQLServer::ExecuteStatementResponse ConnectionFromClient::execute_stat
dbgln_if(SQLSERVER_DEBUG, "ConnectionFromClient::execute_query_statement(statement_id: {})", statement_id);
auto statement = SQLStatement::statement_for(statement_id);
if (statement && statement->connection()->client_id() == client_id()) {
if (statement && statement->connection().client_id() == client_id()) {
// FIXME: Support taking parameters from IPC requests.
return statement->execute(move(const_cast<Vector<SQL::Value>&>(placeholder_values)));
}

17
Userland/Services/SQLServer/SQLStatement.cpp
View file

@ -35,7 +35,7 @@ SQL::ResultOr<NonnullRefPtr<SQLStatement>> SQLStatement::create(DatabaseConnecti
}
SQLStatement::SQLStatement(DatabaseConnection& connection, NonnullRefPtr<SQL::AST::Statement> statement)
: Core::EventReceiver(&connection)
: m_connection(connection)
, m_statement_id(s_next_statement_id++)
, m_statement(move(statement))
{
@ -47,10 +47,9 @@ void SQLStatement::report_error(SQL::Result result, SQL::ExecutionID execution_i
{
dbgln_if(SQLSERVER_DEBUG, "SQLStatement::report_error(statement_id {}, error {}", statement_id(), result.error_string());
auto client_connection = ConnectionFromClient::client_connection_for(connection()->client_id());
auto client_connection = ConnectionFromClient::client_connection_for(connection().client_id());
s_statements.remove(statement_id());
remove_from_parent();
if (client_connection)
client_connection->async_execution_error(statement_id(), execution_id, result.error(), result.error_string());
@ -62,7 +61,7 @@ Optional<SQL::ExecutionID> SQLStatement::execute(Vector<SQL::Value> placeholder_
{
dbgln_if(SQLSERVER_DEBUG, "SQLStatement::execute(statement_id {}", statement_id());
auto client_connection = ConnectionFromClient::client_connection_for(connection()->client_id());
auto client_connection = ConnectionFromClient::client_connection_for(connection().client_id());
if (!client_connection) {
warnln("Cannot yield next result. Client disconnected");
return {};
@ -71,8 +70,8 @@ Optional<SQL::ExecutionID> SQLStatement::execute(Vector<SQL::Value> placeholder_
auto execution_id = m_next_execution_id++;
m_ongoing_executions.set(execution_id);
deferred_invoke([this, placeholder_values = move(placeholder_values), execution_id] {
auto execution_result = m_statement->execute(connection()->database(), placeholder_values);
Core::deferred_invoke([this, strong_this = NonnullRefPtr(*this), placeholder_values = move(placeholder_values), execution_id] {
auto execution_result = m_statement->execute(connection().database(), placeholder_values);
m_ongoing_executions.remove(execution_id);
if (execution_result.is_error()) {
@ -80,7 +79,7 @@ Optional<SQL::ExecutionID> SQLStatement::execute(Vector<SQL::Value> placeholder_
return;
}
auto client_connection = ConnectionFromClient::client_connection_for(connection()->client_id());
auto client_connection = ConnectionFromClient::client_connection_for(connection().client_id());
if (!client_connection) {
warnln("Cannot return statement execution results. Client disconnected");
return;
@ -124,7 +123,7 @@ bool SQLStatement::should_send_result_rows(SQL::ResultSet const& result) const
void SQLStatement::next(SQL::ExecutionID execution_id, SQL::ResultSet result, size_t result_size)
{
auto client_connection = ConnectionFromClient::client_connection_for(connection()->client_id());
auto client_connection = ConnectionFromClient::client_connection_for(connection().client_id());
if (!client_connection) {
warnln("Cannot yield next result. Client disconnected");
return;
@ -134,7 +133,7 @@ void SQLStatement::next(SQL::ExecutionID execution_id, SQL::ResultSet result, si
auto result_row = result.take_first();
client_connection->async_next_result(statement_id(), execution_id, result_row.row.take_data());
deferred_invoke([this, execution_id, result = move(result), result_size]() mutable {
Core::deferred_invoke([this, strong_this = NonnullRefPtr(*this), execution_id, result = move(result), result_size]() mutable {
next(execution_id, move(result), result_size);
});
} else {

10
Userland/Services/SQLServer/SQLStatement.h
View file

@ -7,8 +7,8 @@
#pragma once
#include <AK/NonnullRefPtr.h>
#include <AK/RefCounted.h>
#include <AK/Vector.h>
#include <LibCore/EventReceiver.h>
#include <LibSQL/AST/AST.h>
#include <LibSQL/Result.h>
#include <LibSQL/ResultSet.h>
@ -18,16 +18,13 @@
namespace SQLServer {
class SQLStatement final : public Core::EventReceiver {
C_OBJECT_ABSTRACT(SQLStatement)
class SQLStatement final : public RefCounted<SQLStatement> {
public:
static SQL::ResultOr<NonnullRefPtr<SQLStatement>> create(DatabaseConnection&, StringView sql);
~SQLStatement() override = default;
static RefPtr<SQLStatement> statement_for(SQL::StatementID statement_id);
SQL::StatementID statement_id() const { return m_statement_id; }
DatabaseConnection* connection() { return dynamic_cast<DatabaseConnection*>(parent()); }
DatabaseConnection& connection() { return m_connection; }
Optional<SQL::ExecutionID> execute(Vector<SQL::Value> placeholder_values);
private:
@ -37,6 +34,7 @@ private:
void next(SQL::ExecutionID execution_id, SQL::ResultSet result, size_t result_size);
void report_error(SQL::Result, SQL::ExecutionID execution_id);
DatabaseConnection& m_connection;
SQL::StatementID m_statement_id { 0 };
HashTable<SQL::ExecutionID> m_ongoing_executions;