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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Class to manage Backends.
*
* Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
*
* =====================================================================
* 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: Use plugins
* =====================================================================
* Version: $Id$
* =====================================================================
* History:
* $Log$
* Revision 1.6 2003/04/13 18:07:10 zecke
* More API doc
* QString -> const QString&
* QString = 0l -> QString::null
*
* Revision 1.5 2003/02/21 23:31:52 zecke
* Add XML datebookresource
* -clean up todoaccessxml header
* -implement some more stuff in the oeven tester
* -extend DefaultFactory to not crash and to use datebook
*
* -reading of OEvents is working nicely.. saving will be added
* tomorrow
* -fix spelling in ODateBookAcces
*
* Revision 1.4 2002/10/14 15:55:18 eilers
* Redeactivate SQL.. ;)
*
* Revision 1.3 2002/10/10 17:08:58 zecke
* The Cache is finally in place
* I tested it with my todolist and it 'works' for 10.000 todos the hits are awesome ;)
* The read ahead functionality does not make sense for XMLs backends because most of the stuff is already in memory. While using readahead on SQL makes things a lot faster....
* I still have to fully implement read ahead
* This change is bic but sc
*
* Revision 1.2 2002/10/08 09:27:36 eilers
* Fixed libopie.pro to include the new pim-API.
* The SQL-Stuff is currently deactivated. Otherwise everyone who wants to
* compile itself would need to install libsqlite, libopiesql...
* Therefore, the backend currently uses XML only..
*
* Revision 1.1 2002/10/07 17:35:01 eilers
* added OBackendFactory for advanced backend access
*
*
* =====================================================================
*/
#ifndef OPIE_BACKENDFACTORY_H_
#define OPIE_BACKENDFACTORY_H_
#include <qstring.h>
#include <qasciidict.h>
#include <qpe/config.h>
#include "otodoaccessxml.h"
#include "ocontactaccessbackend_xml.h"
#include "odatebookaccessbackend_xml.h"
#ifdef __USE_SQL
#include "otodoaccesssql.h"
#endif
/**
* This class is our factory. It will give us the default implementations
* of at least Todolist, Contacts and Datebook. In the future this class will
* allow users to switch the backend with ( XML->SQLite ) without the need
* to recompile.#
* This class as the whole PIM Api is making use of templates
*
* <pre>
* OTodoAccessBackend* backend = OBackEndFactory<OTodoAccessBackend>::Default("todo", QString::null );
* backend->load();
* </pre>
*
* @author Stefan Eilers
* @version 0.1
*/
template<class T>
class OBackendFactory
{
public:
OBackendFactory() {};
enum BACKENDS {
TODO,
CONTACT,
DATE
};
/**
* Returns a backend implementation for backendName
* @param backendName the type of the backend
* @param appName will be passed on to the backend
*/
static T* Default( const QString backendName, const QString& appName ){
// __asm__("int3");
Config config( "pimaccess" );
config.setGroup ( backendName );
QString backend = config.readEntry( "usebackend" );
QAsciiDict<int> dict ( 3 );
dict.setAutoDelete ( TRUE );
dict.insert( "todo", new int (TODO) );
dict.insert( "contact", new int (CONTACT) );
dict.insert( "datebook", new int(DATE) );
qWarning ("TODO is: %d", TODO);
qWarning ("CONTACT is: %d", CONTACT);
int *find = dict[ backendName ];
if (!find ) return 0;
switch ( *find ){
case TODO:
#ifdef __USE_SQL
if ( backend == "sql" )
return (T*) new OTodoAccessBackendSQL("");
#else
if ( backend == "sql" )
qWarning ("OBackendFactory:: sql Backend not implemented! Using XML instead!");
#endif
return (T*) new OTodoAccessXML( appName );
case CONTACT:
if ( backend == "sql" )
qWarning ("OBackendFactory:: sql Backend not implemented! Using XML instead!");
return (T*) new OContactAccessBackend_XML( appName );
case DATE:
if ( backend == "sql" )
qWarning("OBackendFactory:: sql Backend not implemented! Using XML instead!");
return (T*) new ODateBookAccessBackend_XML( appName );
default:
return NULL;
}
}
};
#endif
|
