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.h

@@ -0,0 +1,67 @@
+/*
+ * This file is a part of Winix
+ * and is not publicly distributed
+ * 
+ * Copyright (c) 2010, Tomasz Sowa
+ * All rights reserved.
+ * 
+ */
+ 
+#ifndef headerfile_winix_db_dbitemquery
+#define headerfile_winix_db_dbitemquery
+
+
+#include "core/item.h"
+
+
+
+
+struct DbItemQuery
+{
+	// id is selected always
+	bool sel_parent_id;		// parent_id
+	bool sel_user_id;		// user_id, modification_user_id
+	bool sel_group_id;		// group_id
+	bool sel_guest_name;	// guest_name
+	bool sel_privileges;	// privileges
+	bool sel_date;			// date_creation, date_modification
+	bool sel_subject;		// subject
+	bool sel_content;		// content, content_type, (content_id)
+	bool sel_url;			// url
+	bool sel_type;			// type (dir, file, none)
+	bool sel_default_item;	// default_item
+	bool sel_auth;			// auth, auth_path
+	bool sel_html_template;	// template
+
+	bool where_id;			// 
+	bool where_parent_id;	//
+	bool where_type;
+	bool where_auth;
+
+	long id;				// if where_id is true
+	long parent_id;			// if where_parent_id is true
+	Item::Type type;
+	Item::Auth auth;
+	bool auth_equal;		// if true means auth should be equal
+	bool sort_asc;
+
+
+	DbItemQuery();
+	
+	void SetAllSel(bool sel);
+	void SetAllWhere(bool where_);
+	void SetAll(bool sel, bool where_);
+
+	void WhereId(long id_);
+	void WhereParentId(long parent_id_);
+	void WhereType(Item::Type type_);
+	void WhereAuth(Item::Auth st, bool equal = true);
+};
+
+
+
+
+
+
+#endif
+