1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*
This file is part of the Opie Project
Copyright (C) The Main Author <main-author@whereever.org>
=. Copyright (C) The Opie Team <opie-devel@handhelds.org>
.=l.
.>+-=
_;:, .> :=|. This program is free software; you can
.> <`_, > . <= redistribute it and/or modify it under
:`=1 )Y*s>-.-- : the terms of the GNU Library General Public
.="- .-=="i, .._ License as published by the Free Software
- . .-<_> .<> Foundation; either version 2 of the License,
._= =} : or (at your option) any later version.
.%`+i> _;_.
.i_,=:_. -<s. 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
..}^=.= = ; Library General Public License for more
++= -. .` .: details.
: = ...= . :.=-
-. .:....=;==+<; You should have received a copy of the GNU
-_. . . )=. = Library General Public License along with
-- :-=` this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* 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)
*
*/
#ifndef _OCONTACTACCESSBACKEND_H_
#define _OCONTACTACCESSBACKEND_H_
#include <opie2/opimcontact.h>
#include <opie2/opimaccessbackend.h>
#include <qregexp.h>
namespace Opie {
/**
* This class represents the interface of all Contact Backends.
* Derivates of this class will be used to access the contacts.
* As implementation currently XML and vCard exist. This class needs to be implemented
* if you want to provide your own storage.
* In all queries a list of uids is passed on instead of loading the actual record!
*
* @see OPimContactAccessBackend_VCard
* @see OPimContactAccessBackend_XML
*/
class OPimContactAccessBackend: public OPimAccessBackend<OPimContact> {
public:
OPimContactAccessBackend();
/**
* 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)
*/
const uint querySettings() const;
/**
* Check whether settings are correct.
* @return <i>true</i> if the given settings are correct and possible.
*/
bool hasQuerySettings (uint querySettings) const;
/**
* Advanced search mechanism.
*/
UIDArray queryByExample( const UIDArray& uidlist, const OPimContact&, int settings, const QDateTime &d = QDateTime() ) const;
/**
* Slow and inefficent default implementation
*/
//@{
UIDArray sorted( const UIDArray&, bool asc, int, int, const QArray<int>& )const;
OPimBackendOccurrence::List occurrences( const QDate&, const QDate& )const;
//@}
private:
class Private;
Private *d;
};
}
#endif
|
