| -rw-r--r-- | libopie/pim/ocontactaccess.cpp | 57 | ||||
| -rw-r--r-- | libopie/pim/ocontactaccess.h | 43 | ||||
| -rw-r--r-- | libopie/pim/ocontactaccessbackend_xml.h | 21 | ||||
| -rw-r--r-- | libopie/pim/opimaccesstemplate.h | 27 |
4 files changed, 55 insertions, 93 deletions
diff --git a/libopie/pim/ocontactaccess.cpp b/libopie/pim/ocontactaccess.cpp index e8c0a45..2ca0283 100644 --- a/libopie/pim/ocontactaccess.cpp +++ b/libopie/pim/ocontactaccess.cpp @@ -1,188 +1,153 @@ /* * Class to manage the Contacts. * * 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. * ===================================================================== * Info: This class could just work with a change in the header-file * of the Contact class ! Therefore our libopie only compiles * with our version of libqpe * ===================================================================== * ToDo: XML-Backend: Automatic reload if something was changed... * * * ===================================================================== * Version: $Id$ * ===================================================================== * History: * $Log$ + * Revision 1.5 2002/10/16 10:52:40 eilers + * Added some docu to the interface and now using the cache infrastucture by zecke.. :) + * * Revision 1.4 2002/10/14 16:21:54 eilers * Some minor interface updates * * Revision 1.3 2002/10/07 17:34:24 eilers * added OBackendFactory for advanced backend access * * Revision 1.2 2002/10/02 16:18:11 eilers * debugged and seems to work almost perfectly .. * * 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 ! * * */ #include "ocontactaccess.h" #include "obackendfactory.h" #include <qasciidict.h> #include <qdatetime.h> #include <qfile.h> #include <qregexp.h> #include <qlist.h> #include <qcopchannel_qws.h> //#include <qpe/qcopenvelope_qws.h> #include <qpe/global.h> #include <errno.h> #include <fcntl.h> #include <unistd.h> #include <stdlib.h> #include "ocontactaccessbackend_xml.h" OContactAccess::OContactAccess ( const QString appname, const QString , OContactAccessBackend* end, bool autosync ): - OPimAccessTemplate<OContact>( end ), - m_changed ( false ) + OPimAccessTemplate<OContact>( end ) { /* take care of the backend. If there is no one defined, we * will use the XML-Backend as default (until we have a cute SQL-Backend..). */ if( end == 0 ) { qWarning ("Using BackendFactory !"); end = OBackendFactory<OContactAccessBackend>::Default( "contact", appname ); } // Set backend locally and in template m_backEnd = end; OPimAccessTemplate<OContact>::setBackEnd (end); /* Connect signal of external db change to function */ QCopChannel *dbchannel = new QCopChannel( "QPE/PIM", this ); connect( dbchannel, SIGNAL(received(const QCString &, const QByteArray &)), this, SLOT(copMessage( const QCString &, const QByteArray &)) ); if ( autosync ){ QCopChannel *syncchannel = new QCopChannel( "QPE/Sync", this ); connect( syncchannel, SIGNAL(received(const QCString &, const QByteArray &)), this, SLOT(copMessage( const QCString &, const QByteArray &)) ); } } OContactAccess::~OContactAccess () { /* The user may forget to save the changed database, therefore try to * do it for him.. */ - if ( m_changed ) - save(); + save(); // delete m_backEnd; is done by template.. } -bool OContactAccess::load() -{ - return ( m_backEnd->load() ); -} bool OContactAccess::save () { /* If the database was changed externally, we could not save the * Data. This will remove added items which is unacceptable ! * Therefore: Reload database and merge the data... */ - if ( m_backEnd->wasChangedExternally() ) + if ( OPimAccessTemplate<OContact>::wasChangedExternally() ) reload(); - if ( m_changed ){ - bool status = m_backEnd->save(); - if ( !status ) return false; + bool status = OPimAccessTemplate<OContact>::save(); + if ( !status ) return false; - m_changed = false; - /* Now tell everyone that new data is available. - */ - QCopEnvelope e( "QPE/PIM", "addressbookUpdated()" ); - - } + /* Now tell everyone that new data is available. + */ + QCopEnvelope e( "QPE/PIM", "addressbookUpdated()" ); return true; } const uint OContactAccess::querySettings() { return ( m_backEnd->querySettings() ); } bool OContactAccess::hasQuerySettings ( int querySettings ) const { return ( m_backEnd->hasQuerySettings ( querySettings ) ); } -bool OContactAccess::add ( const OContact& newcontact ) -{ - m_changed = true; - return ( m_backEnd->add ( newcontact ) ); -} - -bool OContactAccess::replace ( const OContact& contact ) -{ - m_changed = true; - return ( m_backEnd->replace ( contact ) ); -} - -bool OContactAccess::remove ( const OContact& t ) -{ - m_changed = true; - return ( m_backEnd->remove ( t.uid() ) ); -} - -bool OContactAccess::remove ( int uid ) -{ - m_changed = true; - return ( m_backEnd->remove ( uid ) ); -} bool OContactAccess::wasChangedExternally()const { return ( m_backEnd->wasChangedExternally() ); } -bool OContactAccess::reload() -{ - return ( m_backEnd->reload() ); -} - void OContactAccess::copMessage( const QCString &msg, const QByteArray & ) { if ( msg == "addressbookUpdated()" ){ qWarning ("OContactAccess: Received addressbokUpdated()"); emit signalChanged ( this ); } else if ( msg == "flush()" ) { qWarning ("OContactAccess: Received flush()"); save (); } else if ( msg == "reload()" ) { qWarning ("OContactAccess: Received reload()"); reload (); emit signalChanged ( this ); } } diff --git a/libopie/pim/ocontactaccess.h b/libopie/pim/ocontactaccess.h index adc66cf..da9c942 100644 --- a/libopie/pim/ocontactaccess.h +++ b/libopie/pim/ocontactaccess.h @@ -1,43 +1,46 @@ /* * Class to manage the Contacts. * * 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 1.3 2002/10/16 10:52:40 eilers + * Added some docu to the interface and now using the cache infrastucture by zecke.. :) + * * Revision 1.2 2002/10/14 16:21:54 eilers * Some minor interface updates * * 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 _OCONTACTACCESS_H #define _OCONTACTACCESS_H #include <qobject.h> #include <qpe/qcopenvelope_qws.h> #include <qvaluelist.h> #include <qfileinfo.h> #include "ocontact.h" #include "ocontactaccessbackend.h" #include "opimaccesstemplate.h" @@ -70,99 +73,59 @@ class OContactAccess: public QObject, public OPimAccessTemplate<OContact> /** Constants for query. * Use this constants to set the query parameters. * Note: <i>query_IgnoreCase</i> just make sense with one of the other attributes ! * @see queryByExample() */ enum QuerySettings { WildCards = 0x0001, IgnoreCase = 0x0002, RegExp = 0x0004, ExactMatch = 0x0008, }; /** Return all possible settings. * @return All settings provided by the current backend * (i.e.: query_WildCards & query_IgnoreCase) */ const uint querySettings(); /** Check whether settings are correct. * @return <i>true</i> if the given settings are correct and possible. */ bool hasQuerySettings ( int querySettings ) const; - /** Add Contact to database. - * @param newcontact The contact to add. - * @return <i>true</i> if added successfully. - */ - bool add (const OContact& newcontact); - - /** Replace contact. - * Replaces given contact with contact with the user id <i>uid</i>. - * @param uid The user ID - * @param contact The new contact - * @return <i>true</i> if successful. - */ - bool replace ( const OContact& contact ); - - /** Remove contact. - * Removes contact with the user id <i>uid</i>. - * @param The contact to remove - * @return <i>true</i> if successful. - */ - bool remove ( const OContact& t ); - - /** Remove contact. - * Removes contact with the user id <i>uid</i>. - * @param The user id of the contact to remove - * @return <i>true</i> if successful. - */ - bool remove ( int uid ); - - /** Load Database * - */ - bool load(); - /** * if the resource was changed externally. * You should use the signal instead of polling possible changes ! */ bool wasChangedExternally()const; - /** Reload database. - * You should execute this function if the external database - * was changed. - * This function will load the external database and afterwards - * rejoin the local changes. Therefore the local database will be set consistent. - */ - bool reload(); /** Save contacts database. * Save is more a "commit". After calling this function, all changes are public available. * @return true if successful */ bool save(); signals: /* Signal is emitted if the database was changed. Therefore * we may need to reload to stay consistent. * @param which Pointer to the database who created this event. This pointer * is useful if an application has to handle multiple databases at the same time. * @see reload() */ void signalChanged ( const OContactAccess *which ); private: // class OContactAccessPrivate; // OContactAccessPrivate* d; OContactAccessBackend *m_backEnd; bool m_loading:1; - bool m_changed; private slots: void copMessage( const QCString &msg, const QByteArray &data ); }; #endif diff --git a/libopie/pim/ocontactaccessbackend_xml.h b/libopie/pim/ocontactaccessbackend_xml.h index 50ea329..12a75ba 100644 --- a/libopie/pim/ocontactaccessbackend_xml.h +++ b/libopie/pim/ocontactaccessbackend_xml.h @@ -1,171 +1,182 @@ /* * XML Backend for the OPIE-Contact Database. * * 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: XML-Backend: Automatic reload if something was changed... * * * ===================================================================== * Version: $Id$ * ===================================================================== * History: * $Log$ + * Revision 1.4 2002/10/16 10:52:40 eilers + * Added some docu to the interface and now using the cache infrastucture by zecke.. :) + * * Revision 1.3 2002/10/14 16:21:54 eilers * Some minor interface updates * * Revision 1.2 2002/10/07 17:34:24 eilers * added OBackendFactory for advanced backend access * * 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_XML_ #define _OContactAccessBackend_XML_ #include <qasciidict.h> #include <qdatetime.h> #include <qfile.h> #include <qfileinfo.h> #include <qregexp.h> #include <qarray.h> #include <qpe/global.h> #include <opie/xmltree.h> #include "ocontactaccessbackend.h" #include "ocontactaccess.h" #include <stdlib.h> #include <errno.h> using namespace Opie; /* the default xml implementation */ class OContactAccessBackend_XML : public OContactAccessBackend { public: - OContactAccessBackend_XML ( QString appname, QString filename = 0l ) + OContactAccessBackend_XML ( QString appname, QString filename = 0l ): + m_changed( false ) { m_appName = appname; /* Set journalfile name ... */ m_journalName = getenv("HOME"); m_journalName +="/.abjournal" + appname; /* Expecting to access the default filename if nothing else is set */ if ( filename.isEmpty() ){ m_fileName = Global::applicationFileName( "addressbook","addressbook.xml" ); } else m_fileName = filename; /* Load Database now */ load (); } bool save() { + + if ( !m_changed ) + return true; + QString strNewFile = m_fileName + ".new"; QFile f( strNewFile ); if ( !f.open( IO_WriteOnly|IO_Raw ) ) return false; int total_written; QString out; out = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><!DOCTYPE Addressbook ><AddressBook>\n" " <Groups>\n" " </Groups>\n" " <Contacts>\n"; //QValueList<Contact>::iterator it; QValueListConstIterator<OContact> it; for ( it = m_contactList.begin(); it != m_contactList.end(); ++it ) { out += "<Contact "; (*it).save( out ); out += "/>\n"; QCString cstr = out.utf8(); total_written = f.writeBlock( cstr.data(), cstr.length() ); if ( total_written != int(cstr.length()) ) { f.close(); QFile::remove( strNewFile ); return false; } out = ""; } out += " </Contacts>\n</AddressBook>\n"; QCString cstr = out.utf8(); total_written = f.writeBlock( cstr.data(), cstr.length() ); if ( total_written != int( cstr.length() ) ) { f.close(); QFile::remove( strNewFile ); return false; } f.close(); // move the file over, I'm just going to use the system call // because, I don't feel like using QDir. if ( ::rename( strNewFile.latin1(), m_fileName.latin1() ) < 0 ) { qWarning( "problem renaming file %s to %s, errno: %d", strNewFile.latin1(), m_journalName.latin1(), errno ); // remove the tmp file... QFile::remove( strNewFile ); } /* The journalfile should be removed now... */ removeJournal(); + + m_changed = false; return true; } bool load () { m_contactList.clear(); /* Load XML-File and journal if it exists */ if ( !load ( m_fileName, false ) ) return false; /* The returncode of the journalfile is ignored due to the * fact that it does not exist when this class is instantiated ! * But there may such a file exist, if the application crashed. * Therefore we try to load it to get the changes before the # * crash happened... */ load (m_journalName, true); return true; } void clear () { m_contactList.clear(); + m_changed = false; } bool wasChangedExternally() { QFileInfo fi( m_fileName ); QDateTime lastmod = fi.lastModified (); return (lastmod != m_readtime); } QArray<int> allRecords() const { QArray<int> uid_list( m_contactList.count() ); uint counter = 0; QValueListConstIterator<OContact> it; for( it = m_contactList.begin(); it != m_contactList.end(); ++it ){ uid_list[counter++] = (*it).uid(); } return ( uid_list ); } @@ -254,73 +265,80 @@ class OContactAccessBackend_XML : public OContactAccessBackend { bool hasQuerySettings (uint querySettings) const { /* OContactAccess::IgnoreCase may be added with one * of the other settings, but never used alone. * The other settings are just valid alone... */ switch ( querySettings & ~OContactAccess::IgnoreCase ){ case OContactAccess::RegExp: return ( true ); case OContactAccess::WildCards: return ( true ); case OContactAccess::ExactMatch: return ( true ); default: return ( false ); } } bool add ( const OContact &newcontact ) { //qWarning("odefaultbackend: ACTION::ADD"); updateJournal (newcontact, OContact::ACTION_ADD); addContact_p( newcontact ); + + m_changed = true; + return true; } bool replace ( const OContact &contact ) { + m_changed = true; + bool found = false; QValueListIterator<OContact> it; for( it = m_contactList.begin(); it != m_contactList.end(); ++it ){ if ( (*it).uid() == contact.uid() ){ found = true; break; } } if (found) { updateJournal (contact, OContact::ACTION_REPLACE); m_contactList.remove (it); m_contactList.append (contact); return true; } else return false; } bool remove ( int uid ) { + m_changed = true; + bool found = false; QValueListIterator<OContact> it; for( it = m_contactList.begin(); it != m_contactList.end(); ++it ){ if ((*it).uid() == uid){ found = true; break; } } if (found) { updateJournal ( *it, OContact::ACTION_REMOVE); m_contactList.remove (it); return true; } else return false; } bool reload(){ /* Reload is the same as load in this implementation */ return ( load() ); } private: void addContact_p( const OContact &newcontact ){ m_contactList.append (newcontact); @@ -532,32 +550,33 @@ class OContactAccessBackend_XML : public OContactAccessBackend { // get a XML-File which is readable by our parser. // This is just a cheat, but better than rewrite the parser. if ( created ){ buf = "<Contacts>"; QCString cstr = buf.utf8(); f.writeBlock( cstr.data(), cstr.length() ); } buf = "<Contact "; cnt.save( buf ); buf += " action=\"" + QString::number( (int)action ) + "\" "; buf += "/>\n"; QCString cstr = buf.utf8(); f.writeBlock( cstr.data(), cstr.length() ); } void removeJournal() { QFile f ( m_journalName ); if ( f.exists() ) f.remove(); } protected: + bool m_changed; QString m_journalName; QString m_fileName; QString m_appName; QValueList<OContact> m_contactList; QDateTime m_readtime; }; #endif diff --git a/libopie/pim/opimaccesstemplate.h b/libopie/pim/opimaccesstemplate.h index 3e1f393..50cb1e4 100644 --- a/libopie/pim/opimaccesstemplate.h +++ b/libopie/pim/opimaccesstemplate.h @@ -16,154 +16,169 @@ * interface or you want to implement * your own Access lib * Just create a OPimRecord and inherit from * the plugins */ template <class T = OPimRecord > class OPimAccessTemplate : public OTemplateBase<T> { public: typedef ORecordList<T> List; typedef OPimAccessBackend<T> BackEnd; typedef OPimCache<T> Cache; /** * c'tor BackEnd */ OPimAccessTemplate( BackEnd* end); virtual ~OPimAccessTemplate(); /** * load from the backend */ virtual bool load(); - /** - * reload from the backend + /** Reload database. + * You should execute this function if the external database + * was changed. + * This function will load the external database and afterwards + * rejoin the local changes. Therefore the local database will be set consistent. */ virtual bool reload(); - /** - * save to the backend + /** Save contacts database. + * Save is more a "commit". After calling this function, all changes are public available. + * @return true if successful */ virtual bool save(); /** * if the resource was changed externally + * You should use the signal handling instead of polling possible changes ! + * zecke: Do you implement a signal for otodoaccess ? */ bool wasChangedExternally()const; /** * return a List of records * you can iterate over them */ virtual List allRecords()const; /** - * queryByExample) + * queryByExample. * @see otodoaccess, ocontactaccess */ virtual List queryByExample( const T& t, int querySettings ); /** * find the OPimRecord uid */ virtual T find( int uid )const; /** * read ahead cache find method ;) */ virtual T find( int uid, const QArray<int>&, uint current, CacheDirection dir = Forward )const; /* invalidate cache here */ /** * clears the backend and invalidates the backend */ virtual void clear() ; /** * add T to the backend + * @param t The item to add. + * @return <i>true</i> if added successfully. */ virtual bool add( const T& t ) ; /* only the uid matters */ /** * remove T from the backend + * @param t The item to remove + * @return <i>true</i> if successful. */ virtual bool remove( const T& t ); /** * remove the OPimRecord with uid + * @param uid The ID of the item to remove + * @return <i>true</i> if successful. */ virtual bool remove( int uid ); /** * replace T from backend + * @param t The item to replace + * @return <i>true</i> if successful. */ virtual bool replace( const T& t) ; /** * @internal */ void cache( const T& )const; void setSaneCacheSize( int ); protected: /** * invalidate the cache */ void invalidateCache(); void setBackEnd( BackEnd* end ); /** * returns the backend */ BackEnd* backEnd(); BackEnd* m_backEnd; Cache m_cache; }; template <class T> OPimAccessTemplate<T>::OPimAccessTemplate( BackEnd* end ) : OTemplateBase<T>(), m_backEnd( end ) { if (end ) end->setFrontend( this ); } template <class T> OPimAccessTemplate<T>::~OPimAccessTemplate() { qWarning("~OPimAccessTemplate<T>"); delete m_backEnd; } template <class T> bool OPimAccessTemplate<T>::load() { invalidateCache(); return m_backEnd->load(); } template <class T> bool OPimAccessTemplate<T>::reload() { - return m_backEnd->reload(); + invalidateCache(); // zecke: I think this should be added (se) + return m_backEnd->reload(); } template <class T> bool OPimAccessTemplate<T>::save() { return m_backEnd->save(); } template <class T> OPimAccessTemplate<T>::List OPimAccessTemplate<T>::allRecords()const { QArray<int> ints = m_backEnd->allRecords(); List lis(ints, this ); return lis; } template <class T> OPimAccessTemplate<T>::List OPimAccessTemplate<T>::queryByExample( const T& t, int sortOrder ) { QArray<int> ints = m_backEnd->queryByExample( t, sortOrder ); List lis(ints, this ); return lis; } template <class T> T OPimAccessTemplate<T>::find( int uid ) const{ T t = m_backEnd->find( uid ); cache( t ); return t; |