Fixing serious bug in hasQuerySettings()

2 files changed, 44 insertions, 0 deletions

diff --git a/libopie/pim/ocontactaccessbackend_xml.cpp b/libopie/pim/ocontactaccessbackend_xml.cpp
index 661cd51..097142b 100644
--- a/libopie/pim/ocontactaccessbackend_xml.cpp
+++ b/libopie/pim/ocontactaccessbackend_xml.cpp
@@ -1,147 +1,150 @@
 /*
  * 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 1.6  2003/07/07 16:19:47  eilers
+ * Fixing serious bug in hasQuerySettings()
+ *
  * Revision 1.5  2003/04/13 18:07:10  zecke
  * More API doc
  * QString -> const QString&
  * QString = 0l -> QString::null
  *
  * Revision 1.4  2003/03/21 14:32:54  mickeyl
  * g++ compliance fix: default arguments belong into the declaration, but not the definition
  *
  * Revision 1.3  2003/03/21 12:26:28  eilers
  * Fixing small bug: If we search a birthday from today to today, it returned
  * every contact ..
  *
  * Revision 1.2  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.1.2.2  2003/02/11 12:17:28  eilers
  * Speed optimization. Removed the sequential search loops.
  *
  * Revision 1.1.2.1  2003/02/10 15:31:38  eilers
  * Writing offsets to debug output..
  *
  * Revision 1.1  2003/02/09 15:05:01  eilers
  * Nothing happened.. Just some cleanup before I will start..
  *
  * Revision 1.12  2003/01/03 16:58:03  eilers
  * Reenable debug output
  *
  * Revision 1.11  2003/01/03 12:31:28  eilers
  * Bugfix for calculating data diffs..
  *
  * Revision 1.10  2003/01/02 14:27:12  eilers
  * Improved query by example: Search by date is possible.. First step
  * for a today plugin for birthdays..
  *
  * Revision 1.9  2002/12/08 12:48:57  eilers
  * Moved journal-enum from ocontact into i the xml-backend..
  *
  * Revision 1.8  2002/11/14 17:04:24  eilers
  * Sorting will now work if fullname is identical on some entries
  *
  * Revision 1.7  2002/11/13 15:02:46  eilers
  * Small Bug in sorted fixed
  *
  * Revision 1.6  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.5  2002/11/01 15:10:42  eilers
  * Added regExp-search in database for all fields in a contact.
  *
  * 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 !
  *
  *
  */
 
 #include "ocontactaccessbackend_xml.h"
 
 #include <qasciidict.h>
 #include <qdatetime.h>
 #include <qfile.h>
 #include <qfileinfo.h>
 #include <qregexp.h>
 #include <qarray.h>
 #include <qmap.h>
 #include <qdatetime.h>
 
 #include <qpe/global.h>
 
 #include <opie/xmltree.h>
 #include "ocontactaccessbackend.h"
 #include "ocontactaccess.h"
 
 #include <stdlib.h>
 #include <errno.h>
 
 using namespace Opie;
 
 
 OContactAccessBackend_XML::OContactAccessBackend_XML ( const QString& appname, const QString& filename ):
 	m_changed( false )
 {
 	// Just m_contactlist should call delete if an entry
 	// is removed.
 	m_contactList.setAutoDelete( true );
 	m_uidToContact.setAutoDelete( 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 OContactAccessBackend_XML::save()
 {
 
 	if ( !m_changed )
 		return true;
 
 	QString strNewFile = m_fileName + ".new";
 	QFile f( strNewFile );
 	if ( !f.open( IO_WriteOnly|IO_Raw ) )
@@ -322,272 +325,291 @@ QArray<int> OContactAccessBackend_XML::queryByExample ( const OContact &query, i
 
 							// We have to equalize the year, otherwise
 							// the search will fail..
 							checkDate->setYMD( current.year(),
 									   checkDate->month(),
 									   checkDate->day() );
 							if ( *checkDate < current )
 								checkDate->setYMD( current.year()+1,
 										   checkDate->month(),
 										   checkDate->day() );
 
 							// Check whether the birthday/anniversary date is between
 							// the current/given date and the maximum date
 							// ( maximum time range ) !
 							qWarning("Checking if %s is between %s and %s ! ",
 								 checkDate->toString().latin1(),
 								 current.toString().latin1(),
 								 queryDate->toString().latin1() );
 							if ( current.daysTo( *queryDate ) >= 0 ){
 								if ( !( ( *checkDate >= current ) &&
 									( *checkDate <= *queryDate ) ) ){
 									allcorrect = false;
 									qWarning (" Nope!..");
 								}
 							}
 						}
 					} else{
 						// checkDate is invalid. Therefore this entry is always rejected
 						allcorrect = false;
 					}
 				}
 
 				delete queryDate;
 				queryDate = 0l;
 				delete checkDate;
 				checkDate = 0l;
 				break;
 			default:
 				/* Just compare fields which are not empty in the query object */
 				if ( !query.field(i).isEmpty() ){
 					switch ( settings & ~( OContactAccess::IgnoreCase
 							       | OContactAccess::DateDiff
 							       | OContactAccess::DateYear
 							       | OContactAccess::DateMonth
 							       | OContactAccess::DateDay
 							       | OContactAccess::MatchOne
 							       ) ){
 
 					case OContactAccess::RegExp:{
 						QRegExp expr ( query.field(i),
 							       !(settings & OContactAccess::IgnoreCase),
 							       false );
 						if ( expr.find ( (*it)->field(i), 0 ) == -1 )
 							allcorrect = false;
 					}
 						break;
 					case OContactAccess::WildCards:{
 						QRegExp expr ( query.field(i),
 							       !(settings & OContactAccess::IgnoreCase),
 							       true );
 						if ( expr.find ( (*it)->field(i), 0 ) == -1 )
 							allcorrect = false;
 					}
 						break;
 					case OContactAccess::ExactMatch:{
 						if (settings & OContactAccess::IgnoreCase){
 							if ( query.field(i).upper() !=
 							     (*it)->field(i).upper() )
 								allcorrect = false;
 						}else{
 							if ( query.field(i) != (*it)->field(i) )
 								allcorrect = false;
 						}
 					}
 						break;
 					}
 				}
 			}
 		}
 		if ( allcorrect ){
 			m_currentQuery[arraycounter++] = (*it)->uid();
 		}
 	}
 
 	// Shrink to fit..
 	m_currentQuery.resize(arraycounter);
 
 	return m_currentQuery;
 }
 
 QArray<int> OContactAccessBackend_XML::matchRegexp(  const QRegExp &r ) const
 {
 	QArray<int> m_currentQuery( m_contactList.count() );
 	QListIterator<OContact> it( m_contactList );
 	uint arraycounter = 0;
 
 	for( ; it.current(); ++it ){
 		if ( (*it)->match( r ) ){
 			m_currentQuery[arraycounter++] = (*it)->uid();
 		}
 
 	}
 	// Shrink to fit..
 	m_currentQuery.resize(arraycounter);
 
 	return m_currentQuery;
 }
 
 const uint OContactAccessBackend_XML::querySettings()
 {
 	return ( OContactAccess::WildCards
 		 | OContactAccess::IgnoreCase
 		 | OContactAccess::RegExp
 		 | OContactAccess::ExactMatch
 		 | OContactAccess::DateDiff
 		 | OContactAccess::DateYear
 		 | OContactAccess::DateMonth
 		 | OContactAccess::DateDay
 		 );
 }
 
 bool OContactAccessBackend_XML::hasQuerySettings (uint querySettings) const
 {
 	/* OContactAccess::IgnoreCase, DateDiff, DateYear, DateMonth, DateDay
 	 * may be added with any of the other settings. IgnoreCase should never used alone.
 	 * Wildcards, RegExp, ExactMatch should never used at the same time...
 	 */
 
+	// Step 1: Check whether the given settings are supported by this backend
+	if ( ( querySettings & ( 
+				OContactAccess::IgnoreCase
+				| OContactAccess::WildCards
+				| OContactAccess::DateDiff
+				| OContactAccess::DateYear
+				| OContactAccess::DateMonth
+				| OContactAccess::DateDay
+				| OContactAccess::RegExp
+				| OContactAccess::ExactMatch
+			       ) ) != querySettings )
+		return false;
+
+	// Step 2: Check whether the given combinations are ok..
+
+	// IngoreCase alone is invalid
 	if ( querySettings == OContactAccess::IgnoreCase )
 		return false;
 
+	// WildCards, RegExp and ExactMatch should never used at the same time 
 	switch ( querySettings & ~( OContactAccess::IgnoreCase
 				    | OContactAccess::DateDiff
 				    | OContactAccess::DateYear
 				    | OContactAccess::DateMonth
 				    | OContactAccess::DateDay
 				    )
 		 ){
 	case OContactAccess::RegExp:
 		return ( true );
 	case OContactAccess::WildCards:
 		return ( true );
 	case OContactAccess::ExactMatch:
 		return ( true );
+	case 0: // one of the upper removed bits were set..
+		return ( true );
 	default:
 		return ( false );
 	}
 }
 
 // Currently only asc implemented..
 QArray<int> OContactAccessBackend_XML::sorted( bool asc,  int , int ,  int )
 {
 	QMap<QString, int> nameToUid;
 	QStringList names;
 	QArray<int> m_currentQuery( m_contactList.count() );
 
 	// First fill map and StringList with all Names
 	// Afterwards sort namelist and use map to fill array to return..
 	QListIterator<OContact> it( m_contactList );
 	for( ; it.current(); ++it ){
 		names.append( (*it)->fileAs() + QString::number( (*it)->uid() ) );
 		nameToUid.insert( (*it)->fileAs() + QString::number( (*it)->uid() ), (*it)->uid() );
 	}
 	names.sort();
 
 	int i = 0;
 	if ( asc ){
 		for ( QStringList::Iterator it = names.begin(); it != names.end(); ++it )
 			m_currentQuery[i++] = nameToUid[ (*it) ];
 	}else{
 		for ( QStringList::Iterator it = names.end(); it != names.begin(); --it )
 			m_currentQuery[i++] = nameToUid[ (*it) ];
 	}
 
 	return m_currentQuery;
 
 }
 
 bool OContactAccessBackend_XML::add ( const OContact &newcontact )
 {
 	//qWarning("odefaultbackend: ACTION::ADD");
 	updateJournal (newcontact, ACTION_ADD);
 	addContact_p( newcontact );
 
 	m_changed = true;
 
 	return true;
 }
 
 bool OContactAccessBackend_XML::replace ( const OContact &contact )
 {
 	m_changed = true;
 
 	OContact* found = m_uidToContact.find ( QString().setNum( contact.uid() ) );
 
 	if ( found ) {
 		OContact* newCont = new OContact( contact );
 
 		updateJournal ( *newCont, ACTION_REPLACE);
 		m_contactList.removeRef ( found );
 		m_contactList.append ( newCont );
 		m_uidToContact.remove( QString().setNum( contact.uid() ) );
 		m_uidToContact.insert( QString().setNum( newCont->uid() ), newCont );
 
 		qWarning("Nur zur Sicherheit: %d == %d ?",contact.uid(), newCont->uid());
 
 		return true;
 	} else
 		return false;
 }
 
 bool OContactAccessBackend_XML::remove ( int uid )
 {
 	m_changed = true;
 
 	OContact* found = m_uidToContact.find ( QString().setNum( uid ) );
 
 	if ( found ) {
 		updateJournal ( *found, ACTION_REMOVE);
 		m_contactList.removeRef ( found );
 		m_uidToContact.remove( QString().setNum( uid ) );
 
 		return true;
 	} else
 		return false;
 }
 
 bool OContactAccessBackend_XML::reload(){
 	/* Reload is the same as load in this implementation */
 	return ( load() );
 }
 
 void OContactAccessBackend_XML::addContact_p( const OContact &newcontact )
 {
 	OContact* contRef = new OContact( newcontact );
 
 	m_contactList.append ( contRef );
 	m_uidToContact.insert( QString().setNum( newcontact.uid() ), contRef );
 }
 
 /* This function loads the xml-database and the journalfile */
 bool OContactAccessBackend_XML::load( const QString filename, bool isJournal )
 {
 
 	/* We use the time of the last read to check if the file was
 	 * changed externally.
 	 */
 	if ( !isJournal ){
 		QFileInfo fi( filename );
 		m_readtime = fi.lastModified ();
 	}
 
 	const int JOURNALACTION = Qtopia::Notes + 1;
 	const int JOURNALROW = JOURNALACTION + 1;
 
 	bool foundAction = false;
 	journal_action action = ACTION_ADD;
 	int journalKey = 0;
 	QMap<int, QString> contactMap;
 	QMap<QString, QString> customMap;
 	QMap<QString, QString>::Iterator customIt;
 	QAsciiDict<int> dict( 47 );
 
 	dict.setAutoDelete( TRUE );
 	dict.insert( "Uid", new int(Qtopia::AddressUid) );
 	dict.insert( "Title", new int(Qtopia::Title) );
 	dict.insert( "FirstName", new int(Qtopia::FirstName) );
 	dict.insert( "MiddleName", new int(Qtopia::MiddleName) );
 	dict.insert( "LastName", new int(Qtopia::LastName) );
 	dict.insert( "Suffix", new int(Qtopia::Suffix) );
 	dict.insert( "FileAs", new int(Qtopia::FileAs) );
 	dict.insert( "Categories", new int(Qtopia::AddressCategory) );
diff --git a/libopie2/opiepim/backend/ocontactaccessbackend_xml.cpp b/libopie2/opiepim/backend/ocontactaccessbackend_xml.cpp
index 661cd51..097142b 100644
--- a/libopie2/opiepim/backend/ocontactaccessbackend_xml.cpp
+++ b/libopie2/opiepim/backend/ocontactaccessbackend_xml.cpp
@@ -1,147 +1,150 @@
 /*
  * 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 1.6  2003/07/07 16:19:47  eilers
+ * Fixing serious bug in hasQuerySettings()
+ *
  * Revision 1.5  2003/04/13 18:07:10  zecke
  * More API doc
  * QString -> const QString&
  * QString = 0l -> QString::null
  *
  * Revision 1.4  2003/03/21 14:32:54  mickeyl
  * g++ compliance fix: default arguments belong into the declaration, but not the definition
  *
  * Revision 1.3  2003/03/21 12:26:28  eilers
  * Fixing small bug: If we search a birthday from today to today, it returned
  * every contact ..
  *
  * Revision 1.2  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.1.2.2  2003/02/11 12:17:28  eilers
  * Speed optimization. Removed the sequential search loops.
  *
  * Revision 1.1.2.1  2003/02/10 15:31:38  eilers
  * Writing offsets to debug output..
  *
  * Revision 1.1  2003/02/09 15:05:01  eilers
  * Nothing happened.. Just some cleanup before I will start..
  *
  * Revision 1.12  2003/01/03 16:58:03  eilers
  * Reenable debug output
  *
  * Revision 1.11  2003/01/03 12:31:28  eilers
  * Bugfix for calculating data diffs..
  *
  * Revision 1.10  2003/01/02 14:27:12  eilers
  * Improved query by example: Search by date is possible.. First step
  * for a today plugin for birthdays..
  *
  * Revision 1.9  2002/12/08 12:48:57  eilers
  * Moved journal-enum from ocontact into i the xml-backend..
  *
  * Revision 1.8  2002/11/14 17:04:24  eilers
  * Sorting will now work if fullname is identical on some entries
  *
  * Revision 1.7  2002/11/13 15:02:46  eilers
  * Small Bug in sorted fixed
  *
  * Revision 1.6  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.5  2002/11/01 15:10:42  eilers
  * Added regExp-search in database for all fields in a contact.
  *
  * 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 !
  *
  *
  */
 
 #include "ocontactaccessbackend_xml.h"
 
 #include <qasciidict.h>
 #include <qdatetime.h>
 #include <qfile.h>
 #include <qfileinfo.h>
 #include <qregexp.h>
 #include <qarray.h>
 #include <qmap.h>
 #include <qdatetime.h>
 
 #include <qpe/global.h>
 
 #include <opie/xmltree.h>
 #include "ocontactaccessbackend.h"
 #include "ocontactaccess.h"
 
 #include <stdlib.h>
 #include <errno.h>
 
 using namespace Opie;
 
 
 OContactAccessBackend_XML::OContactAccessBackend_XML ( const QString& appname, const QString& filename ):
 	m_changed( false )
 {
 	// Just m_contactlist should call delete if an entry
 	// is removed.
 	m_contactList.setAutoDelete( true );
 	m_uidToContact.setAutoDelete( 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 OContactAccessBackend_XML::save()
 {
 
 	if ( !m_changed )
 		return true;
 
 	QString strNewFile = m_fileName + ".new";
 	QFile f( strNewFile );
 	if ( !f.open( IO_WriteOnly|IO_Raw ) )
@@ -322,272 +325,291 @@ QArray<int> OContactAccessBackend_XML::queryByExample ( const OContact &query, i
 
 							// We have to equalize the year, otherwise
 							// the search will fail..
 							checkDate->setYMD( current.year(),
 									   checkDate->month(),
 									   checkDate->day() );
 							if ( *checkDate < current )
 								checkDate->setYMD( current.year()+1,
 										   checkDate->month(),
 										   checkDate->day() );
 
 							// Check whether the birthday/anniversary date is between
 							// the current/given date and the maximum date
 							// ( maximum time range ) !
 							qWarning("Checking if %s is between %s and %s ! ",
 								 checkDate->toString().latin1(),
 								 current.toString().latin1(),
 								 queryDate->toString().latin1() );
 							if ( current.daysTo( *queryDate ) >= 0 ){
 								if ( !( ( *checkDate >= current ) &&
 									( *checkDate <= *queryDate ) ) ){
 									allcorrect = false;
 									qWarning (" Nope!..");
 								}
 							}
 						}
 					} else{
 						// checkDate is invalid. Therefore this entry is always rejected
 						allcorrect = false;
 					}
 				}
 
 				delete queryDate;
 				queryDate = 0l;
 				delete checkDate;
 				checkDate = 0l;
 				break;
 			default:
 				/* Just compare fields which are not empty in the query object */
 				if ( !query.field(i).isEmpty() ){
 					switch ( settings & ~( OContactAccess::IgnoreCase
 							       | OContactAccess::DateDiff
 							       | OContactAccess::DateYear
 							       | OContactAccess::DateMonth
 							       | OContactAccess::DateDay
 							       | OContactAccess::MatchOne
 							       ) ){
 
 					case OContactAccess::RegExp:{
 						QRegExp expr ( query.field(i),
 							       !(settings & OContactAccess::IgnoreCase),
 							       false );
 						if ( expr.find ( (*it)->field(i), 0 ) == -1 )
 							allcorrect = false;
 					}
 						break;
 					case OContactAccess::WildCards:{
 						QRegExp expr ( query.field(i),
 							       !(settings & OContactAccess::IgnoreCase),
 							       true );
 						if ( expr.find ( (*it)->field(i), 0 ) == -1 )
 							allcorrect = false;
 					}
 						break;
 					case OContactAccess::ExactMatch:{
 						if (settings & OContactAccess::IgnoreCase){
 							if ( query.field(i).upper() !=
 							     (*it)->field(i).upper() )
 								allcorrect = false;
 						}else{
 							if ( query.field(i) != (*it)->field(i) )
 								allcorrect = false;
 						}
 					}
 						break;
 					}
 				}
 			}
 		}
 		if ( allcorrect ){
 			m_currentQuery[arraycounter++] = (*it)->uid();
 		}
 	}
 
 	// Shrink to fit..
 	m_currentQuery.resize(arraycounter);
 
 	return m_currentQuery;
 }
 
 QArray<int> OContactAccessBackend_XML::matchRegexp(  const QRegExp &r ) const
 {
 	QArray<int> m_currentQuery( m_contactList.count() );
 	QListIterator<OContact> it( m_contactList );
 	uint arraycounter = 0;
 
 	for( ; it.current(); ++it ){
 		if ( (*it)->match( r ) ){
 			m_currentQuery[arraycounter++] = (*it)->uid();
 		}
 
 	}
 	// Shrink to fit..
 	m_currentQuery.resize(arraycounter);
 
 	return m_currentQuery;
 }
 
 const uint OContactAccessBackend_XML::querySettings()
 {
 	return ( OContactAccess::WildCards
 		 | OContactAccess::IgnoreCase
 		 | OContactAccess::RegExp
 		 | OContactAccess::ExactMatch
 		 | OContactAccess::DateDiff
 		 | OContactAccess::DateYear
 		 | OContactAccess::DateMonth
 		 | OContactAccess::DateDay
 		 );
 }
 
 bool OContactAccessBackend_XML::hasQuerySettings (uint querySettings) const
 {
 	/* OContactAccess::IgnoreCase, DateDiff, DateYear, DateMonth, DateDay
 	 * may be added with any of the other settings. IgnoreCase should never used alone.
 	 * Wildcards, RegExp, ExactMatch should never used at the same time...
 	 */
 
+	// Step 1: Check whether the given settings are supported by this backend
+	if ( ( querySettings & ( 
+				OContactAccess::IgnoreCase
+				| OContactAccess::WildCards
+				| OContactAccess::DateDiff
+				| OContactAccess::DateYear
+				| OContactAccess::DateMonth
+				| OContactAccess::DateDay
+				| OContactAccess::RegExp
+				| OContactAccess::ExactMatch
+			       ) ) != querySettings )
+		return false;
+
+	// Step 2: Check whether the given combinations are ok..
+
+	// IngoreCase alone is invalid
 	if ( querySettings == OContactAccess::IgnoreCase )
 		return false;
 
+	// WildCards, RegExp and ExactMatch should never used at the same time 
 	switch ( querySettings & ~( OContactAccess::IgnoreCase
 				    | OContactAccess::DateDiff
 				    | OContactAccess::DateYear
 				    | OContactAccess::DateMonth
 				    | OContactAccess::DateDay
 				    )
 		 ){
 	case OContactAccess::RegExp:
 		return ( true );
 	case OContactAccess::WildCards:
 		return ( true );
 	case OContactAccess::ExactMatch:
 		return ( true );
+	case 0: // one of the upper removed bits were set..
+		return ( true );
 	default:
 		return ( false );
 	}
 }
 
 // Currently only asc implemented..
 QArray<int> OContactAccessBackend_XML::sorted( bool asc,  int , int ,  int )
 {
 	QMap<QString, int> nameToUid;
 	QStringList names;
 	QArray<int> m_currentQuery( m_contactList.count() );
 
 	// First fill map and StringList with all Names
 	// Afterwards sort namelist and use map to fill array to return..
 	QListIterator<OContact> it( m_contactList );
 	for( ; it.current(); ++it ){
 		names.append( (*it)->fileAs() + QString::number( (*it)->uid() ) );
 		nameToUid.insert( (*it)->fileAs() + QString::number( (*it)->uid() ), (*it)->uid() );
 	}
 	names.sort();
 
 	int i = 0;
 	if ( asc ){
 		for ( QStringList::Iterator it = names.begin(); it != names.end(); ++it )
 			m_currentQuery[i++] = nameToUid[ (*it) ];
 	}else{
 		for ( QStringList::Iterator it = names.end(); it != names.begin(); --it )
 			m_currentQuery[i++] = nameToUid[ (*it) ];
 	}
 
 	return m_currentQuery;
 
 }
 
 bool OContactAccessBackend_XML::add ( const OContact &newcontact )
 {
 	//qWarning("odefaultbackend: ACTION::ADD");
 	updateJournal (newcontact, ACTION_ADD);
 	addContact_p( newcontact );
 
 	m_changed = true;
 
 	return true;
 }
 
 bool OContactAccessBackend_XML::replace ( const OContact &contact )
 {
 	m_changed = true;
 
 	OContact* found = m_uidToContact.find ( QString().setNum( contact.uid() ) );
 
 	if ( found ) {
 		OContact* newCont = new OContact( contact );
 
 		updateJournal ( *newCont, ACTION_REPLACE);
 		m_contactList.removeRef ( found );
 		m_contactList.append ( newCont );
 		m_uidToContact.remove( QString().setNum( contact.uid() ) );
 		m_uidToContact.insert( QString().setNum( newCont->uid() ), newCont );
 
 		qWarning("Nur zur Sicherheit: %d == %d ?",contact.uid(), newCont->uid());
 
 		return true;
 	} else
 		return false;
 }
 
 bool OContactAccessBackend_XML::remove ( int uid )
 {
 	m_changed = true;
 
 	OContact* found = m_uidToContact.find ( QString().setNum( uid ) );
 
 	if ( found ) {
 		updateJournal ( *found, ACTION_REMOVE);
 		m_contactList.removeRef ( found );
 		m_uidToContact.remove( QString().setNum( uid ) );
 
 		return true;
 	} else
 		return false;
 }
 
 bool OContactAccessBackend_XML::reload(){
 	/* Reload is the same as load in this implementation */
 	return ( load() );
 }
 
 void OContactAccessBackend_XML::addContact_p( const OContact &newcontact )
 {
 	OContact* contRef = new OContact( newcontact );
 
 	m_contactList.append ( contRef );
 	m_uidToContact.insert( QString().setNum( newcontact.uid() ), contRef );
 }
 
 /* This function loads the xml-database and the journalfile */
 bool OContactAccessBackend_XML::load( const QString filename, bool isJournal )
 {
 
 	/* We use the time of the last read to check if the file was
 	 * changed externally.
 	 */
 	if ( !isJournal ){
 		QFileInfo fi( filename );
 		m_readtime = fi.lastModified ();
 	}
 
 	const int JOURNALACTION = Qtopia::Notes + 1;
 	const int JOURNALROW = JOURNALACTION + 1;
 
 	bool foundAction = false;
 	journal_action action = ACTION_ADD;
 	int journalKey = 0;
 	QMap<int, QString> contactMap;
 	QMap<QString, QString> customMap;
 	QMap<QString, QString>::Iterator customIt;
 	QAsciiDict<int> dict( 47 );
 
 	dict.setAutoDelete( TRUE );
 	dict.insert( "Uid", new int(Qtopia::AddressUid) );
 	dict.insert( "Title", new int(Qtopia::Title) );
 	dict.insert( "FirstName", new int(Qtopia::FirstName) );
 	dict.insert( "MiddleName", new int(Qtopia::MiddleName) );
 	dict.insert( "LastName", new int(Qtopia::LastName) );
 	dict.insert( "Suffix", new int(Qtopia::Suffix) );
 	dict.insert( "FileAs", new int(Qtopia::FileAs) );
 	dict.insert( "Categories", new int(Qtopia::AddressCategory) );