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authoreilers <eilers>2002-09-27 17:11:44 (UTC)
committer eilers <eilers>2002-09-27 17:11:44 (UTC)
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Added API for accessing the Contact-Database ! It is compiling, but
please do not expect that anything is working ! I will debug that stuff in the next time .. Please read README_COMPILE for compiling !
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+/**
+ * The class responsible for managing a backend.
+ * The implementation of this abstract class contains
+ * the complete database handling.
+ *
+ * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
+ * Copyright (c) 2002 by Holger Freyther (zecke@handhelds.org)
+ *
+ * =====================================================================
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation;
+ * either version 2 of the License, or (at your option) any later
+ * version.
+ * =====================================================================
+ * ToDo: Define enum for query settings
+ * =====================================================================
+ * Version: $Id$
+ * =====================================================================
+ * History:
+ * $Log$
+ * Revision 1.1 2002/09/27 17:11:44 eilers
+ * Added API for accessing the Contact-Database ! It is compiling, but
+ * please do not expect that anything is working !
+ * I will debug that stuff in the next time ..
+ * Please read README_COMPILE for compiling !
+ *
+ * =====================================================================
+ *
+ */
+
+#ifndef _OCONTACTACCESSBACKEND_H_
+#define _OCONTACTACCESSBACKEND_H_
+
+#include "opimaccessbackend.h"
+
+class OContactAccessBackend: public OPimAccessBackend<OContact> {
+ public:
+ OContactAccessBackend() {}
+ virtual ~OContactAccessBackend() {}
+
+
+ /** Return if database was changed externally.
+ * This may just make sense on file based databases like a XML-File.
+ * It is used to prevent to overwrite the current database content
+ * if the file was already changed by something else !
+ * If this happens, we have to reload before save our data.
+ * If we use real databases, this should be handled by the database
+ * management system themselve, therefore this function should always return false in
+ * this case. It is not our problem to handle this conflict ...
+ * @return <i>true</i> if the database was changed and if save without reload will
+ * be dangerous. <i>false</i> if the database was not changed or it is save to write
+ * in this situation.
+ */
+ virtual bool wasChangedExternally() = 0;
+
+ /** Return all possible settings.
+ * @return All settings provided by the current backend
+ * (i.e.: query_WildCards & query_IgnoreCase)
+ */
+ virtual const uint querySettings() = 0;
+
+ /** Check whether settings are correct.
+ * @return <i>true</i> if the given settings are correct and possible.
+ */
+ virtual bool hasQuerySettings (uint querySettings) const = 0;
+
+
+};
+#endif