Imported MaNGOS revision 6767 from http://mangos.svn.sourceforge.net/svnroot/mangos/trunk/

src/shared/Database/SqlOperations.h

@@ -0,0 +1,121 @@
+/* 
+ * Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __SQLOPERATIONS_H
+#define __SQLOPERATIONS_H
+
+#include "Common.h"
+
+#include "zthread/LockedQueue.h"
+#include "zthread/FastMutex.h"
+#include "zthread/Thread.h"
+#include <queue>
+#include "Utilities/Callback.h"
+
+/// ---- BASE ---
+
+class Database;
+class SqlDelayThread;
+
+class SqlOperation
+{
+    public:
+        virtual void OnRemove() { delete this; }
+        virtual void Execute(Database *db) = 0;
+        virtual ~SqlOperation() {}
+};
+
+/// ---- ASYNC STATEMENTS / TRANSACTIONS ----
+
+class SqlStatement : public SqlOperation
+{
+    private:
+        const char *m_sql;
+    public:
+        SqlStatement(const char *sql) : m_sql(strdup(sql)){}
+        ~SqlStatement() { void* tofree = const_cast<char*>(m_sql); free(tofree); }
+        void Execute(Database *db);
+};
+
+class SqlTransaction : public SqlOperation
+{
+    private:
+        std::queue<const char *> m_queue;
+    public:
+        SqlTransaction() {}
+        void DelayExecute(const char *sql) { m_queue.push(strdup(sql)); }
+        void Execute(Database *db);
+};
+
+/// ---- ASYNC QUERIES ----
+
+class SqlQuery;                                             /// contains a single async query
+class QueryResult;                                          /// the result of one
+class SqlResultQueue;                                       /// queue for thread sync
+class SqlQueryHolder;                                       /// groups several async quries
+class SqlQueryHolderEx;                                     /// points to a holder, added to the delay thread
+
+class SqlResultQueue : public ZThread::LockedQueue<MaNGOS::IQueryCallback*, ZThread::FastMutex>
+{
+    public:
+        SqlResultQueue() {}
+        void Update();
+};
+
+class SqlQuery : public SqlOperation
+{
+    private:
+        const char *m_sql;
+        MaNGOS::IQueryCallback * m_callback;
+        SqlResultQueue * m_queue;
+    public:
+        SqlQuery(const char *sql, MaNGOS::IQueryCallback * callback, SqlResultQueue * queue)
+            : m_sql(strdup(sql)), m_callback(callback), m_queue(queue) {}
+        ~SqlQuery() { void* tofree = const_cast<char*>(m_sql); free(tofree); }
+        void Execute(Database *db);
+};
+
+class SqlQueryHolder
+{
+    friend class SqlQueryHolderEx;
+    private:
+        typedef std::pair<const char*, QueryResult*> SqlResultPair;
+        std::vector<SqlResultPair> m_queries;
+    public:
+        SqlQueryHolder() {}
+        ~SqlQueryHolder();
+        bool SetQuery(size_t index, const char *sql);
+        bool SetPQuery(size_t index, const char *format, ...) ATTR_PRINTF(3,4);
+        void SetSize(size_t size);
+        QueryResult* GetResult(size_t index);
+        void SetResult(size_t index, QueryResult *result);
+        void Execute(MaNGOS::IQueryCallback * callback, SqlDelayThread *thread, SqlResultQueue *queue);
+};
+
+class SqlQueryHolderEx : public SqlOperation
+{
+    private:
+        SqlQueryHolder * m_holder;
+        MaNGOS::IQueryCallback * m_callback;
+        SqlResultQueue * m_queue;
+    public:
+        SqlQueryHolderEx(SqlQueryHolder *holder, MaNGOS::IQueryCallback * callback, SqlResultQueue * queue)
+            : m_holder(holder), m_callback(callback), m_queue(queue) {}
+        void Execute(Database *db);
+};
+#endif                                                      //__SQLOPERATIONS_H