added: TextStream a class similar to std::ostringstream

but with a Clear() method
       the dynamic allocated buffer can be easily reused
added: DbTextStream a special version of a stream
       used to create a database string query
       everything is escaped by default
added: DbBase a base class with some basic methods for communicating
       with the database
added: DbConn a class for managing connection to the database
changed: some refactoring in Db class       



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@655 e52654a7-88a9-db11-a3e9-0013d4bc506e

db/dbitemquery.cpp

@@ -0,0 +1,97 @@
+/*
+ * This file is a part of Winix
+ * and is not publicly distributed
+ * 
+ * Copyright (c) 2010, Tomasz Sowa
+ * All rights reserved.
+ * 
+ */
+ 
+
+#include "dbitemquery.h"
+
+
+
+DbItemQuery::DbItemQuery()
+{
+	sort_asc   = true;
+	auth_equal = true;
+
+	SetAll(true, false);
+
+	id			= -1;
+	parent_id	= -1;
+	type		= Item::none;
+	auth		= Item::auth_none;
+}
+
+
+
+void DbItemQuery::SetAllSel(bool sel)
+{
+	sel_parent_id		= sel;
+	sel_user_id			= sel;
+	sel_group_id		= sel;
+	sel_guest_name		= sel;
+	sel_privileges		= sel;
+	sel_date			= sel;
+	sel_subject			= sel;
+	sel_content			= sel;
+	sel_url				= sel;
+	sel_type			= sel;
+	sel_default_item	= sel;
+	sel_auth			= sel;
+	sel_html_template	= sel;
+}
+
+
+
+void DbItemQuery::SetAllWhere(bool where_)
+{
+	where_id		= where_;
+	where_parent_id = where_;
+	where_type		= where_;
+	where_auth		= where_;
+}
+
+
+
+void DbItemQuery::SetAll(bool sel, bool where_)
+{
+	SetAllSel(sel);
+	SetAllWhere(where_);
+}
+
+
+
+void DbItemQuery::WhereId(long id_)
+{
+	where_id = true;
+	id       = id_;
+}
+
+
+
+void DbItemQuery::WhereParentId(long parent_id_)
+{
+	where_parent_id = true;
+	parent_id       = parent_id_;
+}
+
+
+
+void DbItemQuery::WhereType(Item::Type type_)
+{ 
+	where_type = true;
+	type       = type_;
+}
+
+
+
+void DbItemQuery::WhereAuth(Item::Auth st, bool equal)
+{
+	where_auth = true;
+	auth       = st;
+	auth_equal = equal;
+}
+