/*
* Best matching number if matchLengthFromRight set to 0
*/
bool CntFilterDetail::bestMatchingEnabled()
{
#ifdef PBK_UNIT_TEST
if (m_emulateBestMatching) {
return true;
}
#endif
bool result = false;
TInt matchLengthFromRight(KDefaultMatchLength);
TRAP_IGNORE(getMatchLengthL(matchLengthFromRight));
if (matchLengthFromRight == 0) {
result = true;
}
return result;
}
/*
* Creates an sql query to fetch contact item IDs for all the contact items
* which may contain the specified telephone number in a telephone, fax
* or SMS type field.
*
* The comparison method used is not exact. The number is compared starting from
* the right side of the number and the method returns an array of candidate
* matches. Punctuation (e.g. spaces) and other alphabetic characters are ignored
* when comparing.
*
* Note that due to the way numbers are stored in the database, it is recommended
* that at least 7 match digits are specified even when matching a number
* containing fewer digits. Failure to follow this guideline may (depending on the
* database contents) mean that the function will not return the expected Contact
* IDs.
*/
void CntFilterDetail::createMatchPhoneNumberQuery(
const QContactFilter& filter,
QString& sqlQuery,
QContactManager::Error* error)
{
if (!filterSupported(filter) ) {
*error = QContactManager::NotSupportedError;
return;
}
QContactDetailFilter detailFilter(filter);
QString number((detailFilter.value()).toString());
TPtrC numberPtr(reinterpret_cast<const TUint16*>(number.utf16()));
TInt matchLengthFromRight(KDefaultMatchLength);
// no need to propagate error, we can use the default match length
TRAP_IGNORE(getMatchLengthL(matchLengthFromRight));
TInt numLowerDigits = matchLengthFromRight;
TInt numUpperDigits = 0;
if (numLowerDigits > KLowerSevenDigits) {
numLowerDigits = KLowerSevenDigits;
numUpperDigits = matchLengthFromRight - KLowerSevenDigits;
}
else if (numLowerDigits == 0) {
// best match phonenumbers
numLowerDigits = KLowerSevenDigits;
}
TMatch phoneDigits = createPaddedPhoneDigits(
numberPtr, numLowerDigits, numUpperDigits, error);
if (*error == QContactManager::NoError) {
// select fields for contacts that match phone lookup
// SELECT contact_id FROM comm_addr
// WHERE value = [value string] AND type = [type value];
//
QString type = QString(" type = %1").arg(CntDbInfo::EPhoneNumber);
QString value = QString(" value = %1").arg(phoneDigits.iLowerSevenDigits);
QString whereClause = " WHERE" + value + " AND" + type;
if (matchLengthFromRight <= KLowerSevenDigits) {
// Matching 7 or less digits...
sqlQuery = "SELECT contact_id FROM comm_addr" + whereClause;
}
else {
// Checking the upper digits...
// select fields for contacts that match phone lookup
// SELECT contact_id, extra_value FROM comm_addr
// WHERE value = [value string] AND type = [type value];
//
QString type = QString(" type = %1").arg(CntDbInfo::EPhoneNumber);
QString value = QString(" value = %1").arg(phoneDigits.iLowerSevenDigits);
QString whereClause = " WHERE" + value + " AND" + type;
sqlQuery = "SELECT contact_id, extra_value FROM comm_addr" + whereClause;
QList<QPair<QContactLocalId, QString> > contactMatches = m_srvConnection.searchPhoneNumbers(sqlQuery, error);
// Check if search query was successful
if (*error != QContactManager::NoError) {
return;
}
QStringList list;
for (int i=0; i<contactMatches.count(); ++i) {
// Check the upper digits...
TInt32 storedUpperDigits(0);
QString extraValue = contactMatches.at(i).second;
TPtrC extValString(reinterpret_cast<const TUint16*>(extraValue.utf16()));
if (TLex(extValString).Val(storedUpperDigits) == KErrNone) {
const TInt KDigitsToRemove = KMaxPhoneMatchLength - KLowerSevenDigits - phoneDigits.iNumUpperDigits;
for (TInt j = 0; j < KDigitsToRemove; ++j) {
// repeatedly divide by 10 to lop off the appropriate number of digits from the right
storedUpperDigits /= 10;
}
storedUpperDigits = TMatch::padOutPhoneMatchNumber(storedUpperDigits, KDigitsToRemove);
if (phoneDigits.iUpperDigits == storedUpperDigits) {
list.append(QString("%1").arg(contactMatches.at(i).first));
}
}
else {
*error = QContactManager::UnspecifiedError;
}
}
// Recreate query to fetch all match ids
// SELECT DISTINCT contact_id FROM contact WHERE contact_id in (
// ..
// )
QString ids = list.join(" ,");
sqlQuery = "SELECT DISTINCT contact_id FROM contact WHERE contact_id in (";
sqlQuery += ids;
sqlQuery += ')';
}
// refine search
if (bestMatchingEnabled()) {
QList<QContactLocalId> list = m_srvConnection.searchContacts(sqlQuery,error);
QList<QContactLocalId> bestMatchingIds;
if (*error == QContactManager::NoError) {
TRAP_IGNORE(
bestMatchingIds = getBestMatchPhoneNumbersL(number, list, error);
)
if (bestMatchingIds.count()>0) {
// recreate query
QString selectQuery = " SELECT contact_id FROM comm_addr WHERE contact_id in (";
QString ids = QString("%1").arg(bestMatchingIds.at(0));
for(int i=1; i<bestMatchingIds.count(); ++i) {
ids += QString(" ,%1").arg(bestMatchingIds.at(i));
}
selectQuery += ids + ')';
sqlQuery = selectQuery;
}
else {
// empty list
QString selectQuery = " SELECT contact_id FROM comm_addr WHERE contact_id in (null)";
sqlQuery = selectQuery;
}
}
