QueryHolder.h

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/*
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _QUERYHOLDER_H
#define _QUERYHOLDER_H

#include <future>

class TC_DATABASE_API SQLQueryHolder
{
 friend class SQLQueryHolderTask;
 private:
 typedef std::pair<SQLElementData, SQLResultSetUnion> SQLResultPair;
 std::vector<SQLResultPair> m_queries;
 public:
 SQLQueryHolder() { }
 virtual ~SQLQueryHolder();
 bool SetQuery(size_t index, const char* sql);
 template<typename Format, typename... Args>
 bool SetPQuery(size_t index, Format&& sql, Args&&... args)
 {
 return SetQuery(index, Trinity::StringFormat(std::forward<Format>(sql), std::forward<Args>(args)...).c_str());
 }
 bool SetPreparedQuery(size_t index, PreparedStatement* stmt);
 void SetSize(size_t size);
 QueryResult GetResult(size_t index);
 PreparedQueryResult GetPreparedResult(size_t index);
 void SetResult(size_t index, ResultSet* result);
 void SetPreparedResult(size_t index, PreparedResultSet* result);
};

typedef std::future<SQLQueryHolder*> QueryResultHolderFuture;
typedef std::promise<SQLQueryHolder*> QueryResultHolderPromise;

class TC_DATABASE_API SQLQueryHolderTask : public SQLOperation
{
 private:
 SQLQueryHolder* m_holder;
 QueryResultHolderPromise m_result;
 bool m_executed;

 public:
 SQLQueryHolderTask(SQLQueryHolder* holder)
 : m_holder(holder), m_executed(false) { }

 ~SQLQueryHolderTask();

 bool Execute() override;
 QueryResultHolderFuture GetFuture() { return m_result.get_future(); }
};

#endif