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/// \file
/// \brief Contains code to call sqlite3_exec over a network that does not support shared file handles.
///
/// This file is part of RakNet Copyright 2003 Jenkins Software LLC
///
/// Usage of RakNet is subject to the appropriate license agreement.
#ifndef ___SQLITE_3_CLIENT_PLUGIN_H
#define ___SQLITE_3_CLIENT_PLUGIN_H
#include "RakNetTypes.h"
#include "Export.h"
#include "PluginInterface2.h"
#include "PacketPriority.h"
#include "SocketIncludes.h"
#include "DS_Multilist.h"
#include "RakString.h"
#include "SQLite3PluginCommon.h"
class RakPeerInterface;
namespace RakNet
{
/// \brief Handles results of calls to SQLite3Plugin::_sqlite3_exec()
/// Results from calling SQLite3Plugin::_sqlite3_exec() are handled in this callback.
/// You should implement the callback, and let the plugin know about it via SQLite3Plugin::AddResultHandler()
/// Be sure to call SQLite3Plugin::RemoveResultHandler() or SQLite3Plugin::ClearResultHandlers() if you delete the callback
/// \ingroup SQL_LITE_3_PLUGIN
class SQLite3PluginResultInterface
{
public:
/// Query executed, possibly returning data or an error message
///
/// \param[out] inputStatement Passed to SQLite3Plugin::_sqlite3_exec
/// \param[out] queryId Returned from SQLite3Plugin::_sqlite3_exec
/// \param[out] dbIdentifier Passed to SQLite3Plugin::_sqlite3_exec
/// \param[out] table Result of call to _sqlite3_exec, should that statement return a result
/// \param[out] errorMsg If _sqlite3_exec failed, then the error message is here, and table will be empty
/// \ingroup SQL_LITE_3_PLUGIN
virtual void _sqlite3_exec(
RakNet::RakString inputStatement,
unsigned int queryId,
RakNet::RakString dbIdentifier,
const SQLite3Table &table,
RakNet::RakString errorMsg)=0;
/// dbIdentifier is unknown on the remote system
///
/// \param[out] inputStatement Passed to SQLite3Plugin::_sqlite3_exec
/// \param[out] queryId Returned from SQLite3Plugin::_sqlite3_exec
/// \param[out] dbIdentifier Passed to SQLite3Plugin::_sqlite3_exec
/// \ingroup SQL_LITE_3_PLUGIN
virtual void OnUnknownDBIdentifier(
RakNet::RakString inputStatement,
unsigned int queryId,
RakNet::RakString dbIdentifier)=0;
};
/// Sample callback implementation that just prints to the screen the results
/// \ingroup SQL_LITE_3_PLUGIN
class SQLite3PluginResultInterface_Printf : public SQLite3PluginResultInterface
{
virtual void _sqlite3_exec(
RakNet::RakString inputStatement,
unsigned int queryId,
RakNet::RakString dbIdentifier,
const SQLite3Table &table,
RakNet::RakString errorMsg);
virtual void OnUnknownDBIdentifier(
RakNet::RakString inputStatement,
unsigned int queryId,
RakNet::RakString dbIdentifier);
};
/// SQLite version 3 supports remote calls via networked file handles, but not over the regular internet
/// This plugin will serialize calls to and results from sqlite3_exec
/// That's all it does - any remote system can execute SQL queries.
/// Intended as a starting platform to derive from for more advanced functionality (security over who can query, etc).
/// Compatible as a plugin with both RakPeerInterface and PacketizedTCP
/// \ingroup SQL_LITE_3_PLUGIN
class RAK_DLL_EXPORT SQLite3ClientPlugin : public PluginInterface2
{
public:
SQLite3ClientPlugin();
virtual ~SQLite3ClientPlugin();
/// Add an interface to get callbacks for results
/// Up to user to make sure the pointer is valid through the lifetime of use
void AddResultHandler(SQLite3PluginResultInterface *res);
void RemoveResultHandler(SQLite3PluginResultInterface *res);
void ClearResultHandlers(void);
/// Execute a statement on the remote system
/// \note Don't forget to escape your input strings. RakString::SQLEscape() is available for this.
/// \param[in] dbIdentifier Which database to use, added with AddDBHandle()
/// \param[in] inputStatement SQL statement to execute
/// \param[in] priority See RakPeerInterface::Send()
/// \param[in] reliability See RakPeerInterface::Send()
/// \param[in] orderingChannel See RakPeerInterface::Send()
/// \param[in] systemAddress See RakPeerInterface::Send()
/// \return Query ID. Will be returned in _sqlite3_exec
unsigned int _sqlite3_exec(RakNet::RakString dbIdentifier, RakNet::RakString inputStatement,
PacketPriority priority, PacketReliability reliability, char orderingChannel, const SystemAddress &systemAddress);
/// \internal For plugin handling
virtual PluginReceiveResult OnReceive(Packet *packet);
// List of result handlers added with AddResultHandler()
DataStructures::List<SQLite3PluginResultInterface *> resultHandlers;
// Each query returns a numeric id if you want it. This tracks what id to assign next. Increments sequentially.
unsigned int nextQueryId;
};
}
#endif