QContactDetail *CntTransformPresence::transformItemField(const CContactItemField& field, const QContact &contact)
{
    QList<QContactDetail> presenceDetails = contact.details(QContactPresence::DefinitionName);
    TLex label(field.Label());
    int counter = -1;
    if (label.Val(counter) != KErrNone) {
        return NULL;
    }
    
    //check what presence detail the provided field belongs to. if there is no such detail yet,
    //let's create it.
    if (presenceDetails.count() <= counter) {
        for (int i = presenceDetails.count(); i <= counter; i++) {
            QContactPresence *presence = new QContactPresence();
            QContact& currentContact = const_cast<QContact&>(contact);
            currentContact.saveDetail(presence);
            delete presence;
        }
        presenceDetails = contact.details(QContactPresence::DefinitionName);
    }
    QContactPresence *presenceDetail = new QContactPresence(presenceDetails.at(counter));

	CContactTextField* storage = field.TextStorage();
	QString presenceString = QString::fromUtf16(storage->Text().Ptr(), storage->Text().Length());

    for (int i = 0; i < field.ContentType().FieldTypeCount(); i++) {
        //Presence
        if (field.ContentType().FieldType(i) == KUidContactFieldPresence) {
            QContactPresence::PresenceState presenceState = decodePresence(presenceString);
            presenceDetail->setPresenceState(presenceState);
        }
        //Status Message
        else if (field.ContentType().FieldType(i) == KUidContactFieldStatusMsg) {
            presenceDetail->setPresenceStateText(presenceString);
        }
    }

    // set context
	for (int i = 0; i < field.ContentType().FieldTypeCount(); i++) {
        setContexts(field.ContentType().FieldType(i), *presenceDetail);
	}

	return presenceDetail;
}
Esempio n. 2
0
int main(int argc, char  *argv[])
{
    QCoreApplication application(argc, argv);

    QMap<QString, QString> parameters;
    parameters.insert(QString::fromLatin1("mergePresenceChanges"), QString::fromLatin1("false"));

    QContactManager manager(QString::fromLatin1("org.nemomobile.contacts.sqlite"), parameters);

    QContactFetchRequest request;
    request.setManager(&manager);

    // Perform an initial request to ensure the database has been created before we start timing
    request.start();
    request.waitForFinished();

    qint64 elapsedTimeTotal = 0;

    QElapsedTimer asyncTotalTimer;
    asyncTotalTimer.start();

    // Fetch all, no optimization hints
    for (int i = 0; i < 3; ++i) {
        QElapsedTimer timer;
        timer.start();
        request.start();
        request.waitForFinished();

        qint64 elapsed = timer.elapsed();
        qDebug() << i << ": Fetch completed in" << elapsed << "ms";
        elapsedTimeTotal += elapsed;
    }

    // Skip relationships
    QContactFetchHint hint;
    hint.setOptimizationHints(QContactFetchHint::NoRelationships);
    request.setFetchHint(hint);

    for (int i = 0; i < 3; ++i) {
        QElapsedTimer timer;
        timer.start();
        request.start();
        request.waitForFinished();

        qint64 elapsed = timer.elapsed();
        qDebug() << i << ": No-relationships fetch completed in" << elapsed << "ms";
        elapsedTimeTotal += elapsed;
    }

    // Reduce data access
#ifdef USING_QTPIM
    hint.setDetailTypesHint(QList<QContactDetail::DetailType>() << QContactName::Type << QContactAddress::Type);
#else
    hint.setDetailDefinitionsHint(QStringList() << QContactName::DefinitionName << QContactAddress::DefinitionName);
#endif
    request.setFetchHint(hint);

    for (int i = 0; i < 3; ++i) {
        QElapsedTimer timer;
        timer.start();
        request.start();
        request.waitForFinished();

        qint64 elapsed = timer.elapsed();
        qDebug() << i << ": Reduced data fetch completed in" << elapsed << "ms";
        elapsedTimeTotal += elapsed;
    }

    // Reduce number of results
    hint.setMaxCountHint(request.contacts().count() / 8);
    request.setFetchHint(hint);

    for (int i = 0; i < 3; ++i) {
        QElapsedTimer timer;
        timer.start();
        request.start();
        request.waitForFinished();

        qint64 elapsed = timer.elapsed();
        qDebug() << i << ": Max count fetch completed in" << elapsed << "ms";
        elapsedTimeTotal += elapsed;
    }
    qint64 asyncTotalElapsed = asyncTotalTimer.elapsed();



    // Time some synchronous operations.  First, generate the test data.
    qsrand((int)asyncTotalElapsed);
    QList<int> nbrContacts;
    nbrContacts << 10 << 100 << 500 << 1000 << 2000;
    QList<QList<QContact> > testData;
    qDebug() << "\n\n\n\n\n";
    qDebug() << "Generating test data for timings...";
    for (int i = 0; i < nbrContacts.size(); ++i) {
        int howMany = nbrContacts.at(i);
        QList<QContact> newTestData;
        newTestData.reserve(howMany);

        for (int j = 0; j < howMany; ++j) {
            // Use testing sync target, so 'local' won't be modified into 'was_local' via aggregation
            newTestData.append(generateContact(QString::fromLatin1("testing")));
        }

        testData.append(newTestData);
    }


    // Perform the timings - these all create new contacts and assume an "empty" initial database
    QElapsedTimer syncTimer;
    for (int i = 0; i < testData.size(); ++i) {
        QList<QContact> td = testData.at(i);
        qint64 ste = 0;
        qDebug() << "Performing tests for" << td.size() << "contacts:";

        syncTimer.start();
        manager.saveContacts(&td);
        ste = syncTimer.elapsed();
        qDebug() << "    saving took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

        QContactDetailFilter testingFilter;
#ifdef USING_QTPIM
        testingFilter.setDetailType(QContactSyncTarget::Type, QContactSyncTarget::FieldSyncTarget);
#else
        testingFilter.setDetailDefinitionName(QContactSyncTarget::DefinitionName, QContactSyncTarget::FieldSyncTarget);
#endif
        testingFilter.setValue(QString::fromLatin1("testing"));

        QContactFetchHint fh;
        syncTimer.start();
        QList<QContact> readContacts = manager.contacts(testingFilter, QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        if (readContacts.size() != td.size()) {
            qWarning() << "Invalid retrieval count:" << readContacts.size() << "expecting:" << td.size();
        }
        qDebug() << "    reading all (" << readContacts.size() << "), all details, took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

#ifdef USING_QTPIM
        fh.setDetailTypesHint(QList<QContactDetail::DetailType>() << QContactDisplayLabel::Type
                << QContactName::Type << QContactAvatar::Type
                << QContactPhoneNumber::Type << QContactEmailAddress::Type);
#else
        fh.setDetailDefinitionsHint(QStringList() << QContactDisplayLabel::DefinitionName
                << QContactName::DefinitionName << QContactAvatar::DefinitionName
                << QContactPhoneNumber::DefinitionName << QContactEmailAddress::DefinitionName);
#endif
        syncTimer.start();
        readContacts = manager.contacts(testingFilter, QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        if (readContacts.size() != td.size()) {
            qWarning() << "Invalid retrieval count:" << readContacts.size() << "expecting:" << td.size();
        }
        qDebug() << "    reading all, common details, took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

        fh.setOptimizationHints(QContactFetchHint::NoRelationships);
#ifdef USING_QTPIM
        fh.setDetailTypesHint(QList<QContactDetail::DetailType>());
#else
        fh.setDetailDefinitionsHint(QStringList());
#endif
        syncTimer.start();
        readContacts = manager.contacts(testingFilter, QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        if (readContacts.size() != td.size()) {
            qWarning() << "Invalid retrieval count:" << readContacts.size() << "expecting:" << td.size();
        }
        qDebug() << "    reading all, no relationships, took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

#ifdef USING_QTPIM
        fh.setDetailTypesHint(QList<QContactDetail::DetailType>() << QContactDisplayLabel::Type
                << QContactName::Type << QContactAvatar::Type);
#else
        fh.setDetailDefinitionsHint(QStringList() << QContactDisplayLabel::DefinitionName
                << QContactName::DefinitionName << QContactAvatar::DefinitionName);
#endif
        syncTimer.start();
        readContacts = manager.contacts(testingFilter, QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        if (readContacts.size() != td.size()) {
            qWarning() << "Invalid retrieval count:" << readContacts.size() << "expecting:" << td.size();
        }
        qDebug() << "    reading all, display details + no rels, took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

        // Read the contacts, selected by ID
        QList<QContactId> idsToRetrieve;
        for (int j = 0; j < td.size(); ++j) {
            idsToRetrieve.append(retrievalId(td.at(j)));
        }

        syncTimer.start();
        readContacts = manager.contacts(idsToRetrieve, fh, 0);
        ste = syncTimer.elapsed();
        if (readContacts.size() != td.size()) {
            qWarning() << "Invalid retrieval count:" << readContacts.size() << "expecting:" << td.size();
        }
        qDebug() << "    reading all by IDs, display details + no rels, took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

        // Read the same set using ID filtering
#ifdef USING_QTPIM
        QContactIdFilter idFilter;
#else
        QContactLocalIdFilter idFilter;
#endif
        idFilter.setIds(idsToRetrieve);

        syncTimer.start();
        readContacts = manager.contacts(idFilter, QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        if (readContacts.size() != td.size()) {
            qWarning() << "Invalid retrieval count:" << readContacts.size() << "expecting:" << td.size();
        }
        qDebug() << "    reading all by ID filter, display details + no rels, took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

        // Read the same set, but filter everything out using syncTarget
        QContactDetailFilter aggregateFilter;
#ifdef USING_QTPIM
        aggregateFilter.setDetailType(QContactSyncTarget::Type, QContactSyncTarget::FieldSyncTarget);
#else
        aggregateFilter.setDetailDefinitionName(QContactSyncTarget::DefinitionName, QContactSyncTarget::FieldSyncTarget);
#endif
        aggregateFilter.setValue(QString::fromLatin1("aggregate"));

        syncTimer.start();
        readContacts = manager.contacts(idFilter & aggregateFilter, QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        if (readContacts.size() != 0) {
            qWarning() << "Invalid retrieval count:" << readContacts.size() << "expecting:" << 0;
        }
        qDebug() << "    reading all by ID filter & aggregate, display details + no rels, took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

        QContactDetailFilter firstNameStartsA;
#ifdef USING_QTPIM
        firstNameStartsA.setDetailType(QContactName::Type, QContactName::FieldFirstName);
#else
        firstNameStartsA.setDetailDefinitionName(QContactName::DefinitionName, QContactName::FieldFirstName);
#endif
        firstNameStartsA.setValue("A");
        firstNameStartsA.setMatchFlags(QContactDetailFilter::MatchStartsWith);
#ifdef USING_QTPIM
        fh.setDetailTypesHint(QList<QContactDetail::DetailType>());
#else
        fh.setDetailDefinitionsHint(QStringList());
#endif
        syncTimer.start();
        readContacts = manager.contacts(firstNameStartsA, QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        qDebug() << "    reading filtered (" << readContacts.size() << "), no relationships, took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

        QList<ContactIdType> idsToRemove;
        for (int j = 0; j < td.size(); ++j) {
            idsToRemove.append(retrievalId(td.at(j)));
        }

        syncTimer.start();
        manager.removeContacts(idsToRemove);
        ste = syncTimer.elapsed();
        qDebug() << "    removing test data took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;
    }

    // these tests are slightly different to those above.  They operate on much smaller
    // batches, but occur after the database has already been prefilled with some data.
    QList<int> smallerNbrContacts;
    smallerNbrContacts << 1 << 2 << 5 << 10 << 20 << 50;
    QList<QList<QContact> > smallerTestData;
    qDebug() << "\n\nGenerating smaller test data for prefilled timings...";
    for (int i = 0; i < smallerNbrContacts.size(); ++i) {
        int howMany = smallerNbrContacts.at(i);
        QList<QContact> newTestData;
        newTestData.reserve(howMany);

        for (int j = 0; j < howMany; ++j) {
            newTestData.append(generateContact());
        }

        smallerTestData.append(newTestData);
    }

    // prefill the database
    QList<QContact> prefillData;
    for (int i = 0; i < testData.size() && testData.at(i).size() < 1001; ++i) {
        prefillData = testData.at(i);
    }
    qDebug() << "Prefilling database with" << prefillData.size() << "contacts... this will take a while...";
    manager.saveContacts(&prefillData);
    qDebug() << "Now performing timings (shouldn't get aggregated)...";
    for (int i = 0; i < smallerTestData.size(); ++i) {
        QList<QContact> td = smallerTestData.at(i);
        qint64 ste = 0;
        qDebug() << "Performing tests for" << td.size() << "contacts:";

        syncTimer.start();
        manager.saveContacts(&td);
        ste = syncTimer.elapsed();
        qDebug() << "    saving took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;

        QContactFetchHint fh;
        syncTimer.start();
        QList<QContact> readContacts = manager.contacts(QContactFilter(), QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        qDebug() << "    reading all (" << readContacts.size() << "), all details, took" << ste << "milliseconds";
        elapsedTimeTotal += ste;

#ifdef USING_QTPIM
        fh.setDetailTypesHint(QList<QContactDetail::DetailType>() << QContactDisplayLabel::Type
                << QContactName::Type << QContactAvatar::Type
                << QContactPhoneNumber::Type << QContactEmailAddress::Type);
#else
        fh.setDetailDefinitionsHint(QStringList() << QContactDisplayLabel::DefinitionName
                << QContactName::DefinitionName << QContactAvatar::DefinitionName
                << QContactPhoneNumber::DefinitionName << QContactEmailAddress::DefinitionName);
#endif
        syncTimer.start();
        readContacts = manager.contacts(QContactFilter(), QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        qDebug() << "    reading all, common details, took" << ste << "milliseconds";
        elapsedTimeTotal += ste;

        fh.setOptimizationHints(QContactFetchHint::NoRelationships);
#ifdef USING_QTPIM
        fh.setDetailTypesHint(QList<QContactDetail::DetailType>());
#else
        fh.setDetailDefinitionsHint(QStringList());
#endif
        syncTimer.start();
        readContacts = manager.contacts(QContactFilter(), QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        qDebug() << "    reading all, no relationships, took" << ste << "milliseconds";
        elapsedTimeTotal += ste;

#ifdef USING_QTPIM
        fh.setDetailTypesHint(QList<QContactDetail::DetailType>() << QContactDisplayLabel::Type
                << QContactName::Type << QContactAvatar::Type);
#else
        fh.setDetailDefinitionsHint(QStringList() << QContactDisplayLabel::DefinitionName
                << QContactName::DefinitionName << QContactAvatar::DefinitionName);
#endif
        syncTimer.start();
        readContacts = manager.contacts(QContactFilter(), QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        qDebug() << "    reading all, display details + no rels, took" << ste << "milliseconds";
        elapsedTimeTotal += ste;

        QContactDetailFilter firstNameStartsA;
#ifdef USING_QTPIM
        firstNameStartsA.setDetailType(QContactName::Type, QContactName::FieldFirstName);
#else
        firstNameStartsA.setDetailDefinitionName(QContactName::DefinitionName, QContactName::FieldFirstName);
#endif
        firstNameStartsA.setValue("A");
        firstNameStartsA.setMatchFlags(QContactDetailFilter::MatchStartsWith);
#ifdef USING_QTPIM
        fh.setDetailTypesHint(QList<QContactDetail::DetailType>());
#else
        fh.setDetailDefinitionsHint(QStringList());
#endif
        syncTimer.start();
        readContacts = manager.contacts(firstNameStartsA, QList<QContactSortOrder>(), fh);
        ste = syncTimer.elapsed();
        qDebug() << "    reading filtered (" << readContacts.size() << "), no relationships, took" << ste << "milliseconds";
        elapsedTimeTotal += ste;

        QList<ContactIdType> idsToRemove;
        for (int j = 0; j < td.size(); ++j) {
            idsToRemove.append(retrievalId(td.at(j)));
        }

        syncTimer.start();
        manager.removeContacts(idsToRemove);
        ste = syncTimer.elapsed();
        qDebug() << "    removing test data took" << ste << "milliseconds (" << ((1.0 * ste) / (1.0 * td.size())) << "msec per contact )";
        elapsedTimeTotal += ste;
    }

    // The next test is about saving contacts which should get aggregated into others.
    // Aggregation is an expensive operation, so we expect these save operations to take longer.
    qDebug() << "\n\nPerforming aggregation tests";
    QList<QContact> contactsToAggregate;
    for (int i = 0; i < 100; ++i) {
        QContact existingContact = prefillData.at(prefillData.size() - 1 - i);
        QContact contactToAggregate;
        QContactSyncTarget newSyncTarget;
        newSyncTarget.setSyncTarget(QString(QLatin1String("fetchtimes-aggregation")));
        QContactName aggName = existingContact.detail<QContactName>(); // ensures it'll get aggregated
        QContactOnlineAccount newOnlineAcct; // new data, which should get promoted up etc.
        newOnlineAcct.setAccountUri(QString(QLatin1String("test-aggregation-%1@fetchtimes")).arg(i));
        contactToAggregate.saveDetail(&newSyncTarget);
        contactToAggregate.saveDetail(&aggName);
        contactToAggregate.saveDetail(&newOnlineAcct);
        contactsToAggregate.append(contactToAggregate);
    }

    syncTimer.start();
    manager.saveContacts(&contactsToAggregate);
    qint64 aggregationElapsed = syncTimer.elapsed();
    int totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "Average time for aggregation of" << contactsToAggregate.size() << "contacts (with" << totalAggregatesInDatabase << "existing in database):" << aggregationElapsed
             << "milliseconds (" << ((1.0 * aggregationElapsed) / (1.0 * contactsToAggregate.size())) << " msec per aggregated contact )";
    elapsedTimeTotal += aggregationElapsed;

    // Now perform the test again, this time with more aggregates, to test nonlinearity.
    contactsToAggregate.clear();
    for (int i = 200; i < 400; ++i) {
        QContact existingContact = prefillData.at(prefillData.size() - 1 - i);
        QContact contactToAggregate;
        QContactSyncTarget newSyncTarget;
        newSyncTarget.setSyncTarget(QString(QLatin1String("fetchtimes-aggregation")));
        QContactName aggName = existingContact.detail<QContactName>(); // ensures it'll get aggregated
        QContactOnlineAccount newOnlineAcct; // new data, which should get promoted up etc.
        newOnlineAcct.setAccountUri(QString(QLatin1String("test-aggregation-%1@fetchtimes")).arg(i));
        contactToAggregate.saveDetail(&newSyncTarget);
        contactToAggregate.saveDetail(&aggName);
        contactToAggregate.saveDetail(&newOnlineAcct);
        contactsToAggregate.append(contactToAggregate);
    }

    syncTimer.start();
    manager.saveContacts(&contactsToAggregate);
    aggregationElapsed = syncTimer.elapsed();
    totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "Average time for aggregation of" << contactsToAggregate.size() << "contacts (with" << totalAggregatesInDatabase << "existing in database):" << aggregationElapsed
             << "milliseconds (" << ((1.0 * aggregationElapsed) / (1.0 * contactsToAggregate.size())) << " msec per aggregated contact )";
    elapsedTimeTotal += aggregationElapsed;


    // The next test is about updating existing contacts, amongst a large set.
    // We're especially interested in presence updates, as these are common.
    qDebug() << "\n\nPerforming presence update tests:";

    // in the first presence update test, we update a small number of contacts.
    QStringList presenceAvatars = generateAvatarsList();
    QList<QContact> contactsToUpdate;
    for (int i = 0; i < 10; ++i) {
        contactsToUpdate.append(prefillData.at(prefillData.size() - 1 - i));
    }

    // modify the presence, nickname and avatar of the test data
    for (int j = 0; j < contactsToUpdate.size(); ++j) {
        QString genstr = QString::number(j);
        QContact curr = contactsToUpdate[j];
        QContactPresence cp = curr.detail<QContactPresence>();
        QContactNickname nn = curr.detail<QContactNickname>();
        QContactAvatar av = curr.detail<QContactAvatar>();
        cp.setNickname(genstr);
        cp.setCustomMessage(genstr);
        cp.setTimestamp(QDateTime::currentDateTime());
        cp.setPresenceState(static_cast<QContactPresence::PresenceState>(qrand() % 4));
        nn.setNickname(nn.nickname() + genstr);
        av.setImageUrl(genstr + presenceAvatars.at(qrand() % presenceAvatars.size()));
        curr.saveDetail(&cp);
        curr.saveDetail(&nn);
        curr.saveDetail(&av);
        contactsToUpdate.replace(j, curr);
    }

    // perform a batch save.
    syncTimer.start();
    manager.saveContacts(&contactsToUpdate);
    qint64 presenceElapsed = syncTimer.elapsed();
    totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "    update ( batch of" << contactsToUpdate.size() << ") presence+nick+avatar (with" << totalAggregatesInDatabase << "existing in database, all overlap):" << presenceElapsed
             << "milliseconds (" << ((1.0 * presenceElapsed) / (1.0 * contactsToUpdate.size())) << " msec per updated contact )";
    elapsedTimeTotal += presenceElapsed;

    // in the second presence update test, we update ALL of the contacts
    // This simulates having a large number of contacts from a single source (eg, a social network)
    // where (due to changed connectivity status) presence updates for the entire set become available.
    contactsToUpdate.clear();
    QDateTime timestamp = QDateTime::currentDateTime();
    for (int j = 0; j < prefillData.size(); ++j) {
        QContact curr = prefillData.at(j);
        QString genstr = QString::number(j) + "2";
        QContactPresence cp = curr.detail<QContactPresence>();
        QContactNickname nn = curr.detail<QContactNickname>();
        QContactAvatar av = curr.detail<QContactAvatar>();
        cp.setNickname(genstr);
        cp.setCustomMessage(genstr);
        cp.setTimestamp(timestamp);
        cp.setPresenceState(static_cast<QContactPresence::PresenceState>((qrand() % 4) + 1));
        nn.setNickname(nn.nickname() + genstr);
        av.setImageUrl(genstr + presenceAvatars.at(qrand() % presenceAvatars.size()));
        curr.saveDetail(&cp);
        curr.saveDetail(&nn);
        curr.saveDetail(&av);
        contactsToUpdate.append(curr);
    }

    // perform a batch save.
    syncTimer.start();
    manager.saveContacts(&contactsToUpdate);
    presenceElapsed = syncTimer.elapsed();
    totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "    update ( batch of" << contactsToUpdate.size() << ") presence+nick+avatar (with" << totalAggregatesInDatabase << "existing in database, all overlap):" << presenceElapsed
             << "milliseconds (" << ((1.0 * presenceElapsed) / (1.0 * contactsToUpdate.size())) << " msec per updated contact )";
    elapsedTimeTotal += presenceElapsed;

    // the third presence update test is identical to the previous, but with 2000 prefilled contacts in database.
    qDebug() << "    Adding more prefill data, please wait...";
    QList<QContact> morePrefillData;
    for (int i = 0; i < 1000; ++i) {
        morePrefillData.append(generateContact(QString::fromLatin1("testing")));
    }
    manager.saveContacts(&morePrefillData);

    // now do the updates and save.
    contactsToUpdate.clear();
    timestamp = QDateTime::currentDateTime();
    for (int j = 0; j < prefillData.size(); ++j) {
        QContact curr = prefillData.at(j);
        QString genstr = QString::number(j) + "3";
        QContactPresence cp = curr.detail<QContactPresence>();
        QContactNickname nn = curr.detail<QContactNickname>();
        QContactAvatar av = curr.detail<QContactAvatar>();
        cp.setNickname(genstr);
        cp.setCustomMessage(genstr);
        cp.setTimestamp(timestamp);
        cp.setPresenceState(static_cast<QContactPresence::PresenceState>((qrand() % 4) + 1));
        nn.setNickname(nn.nickname() + genstr);
        av.setImageUrl(genstr + presenceAvatars.at(qrand() % presenceAvatars.size()));
        curr.saveDetail(&cp);
        curr.saveDetail(&nn);
        curr.saveDetail(&av);
        contactsToUpdate.append(curr);
    }
    for (int j = 0; j < morePrefillData.size(); ++j) {
        QContact curr = morePrefillData.at(j);
        QString genstr = QString::number(j) + "3";
        QContactPresence cp = curr.detail<QContactPresence>();
        QContactNickname nn = curr.detail<QContactNickname>();
        QContactAvatar av = curr.detail<QContactAvatar>();
        cp.setNickname(genstr);
        cp.setCustomMessage(genstr);
        cp.setTimestamp(timestamp);
        cp.setPresenceState(static_cast<QContactPresence::PresenceState>((qrand() % 4) + 1));
        nn.setNickname(nn.nickname() + genstr);
        av.setImageUrl(genstr + presenceAvatars.at(qrand() % presenceAvatars.size()));
        curr.saveDetail(&cp);
        curr.saveDetail(&nn);
        curr.saveDetail(&av);
        contactsToUpdate.append(curr);
    }

    // perform a batch save.
    syncTimer.start();
    manager.saveContacts(&contactsToUpdate);
    presenceElapsed = syncTimer.elapsed();
    totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "    update ( batch of" << contactsToUpdate.size() << ") presence+nick+avatar (with" << totalAggregatesInDatabase << "existing in database, all overlap):" << presenceElapsed
             << "milliseconds (" << ((1.0 * presenceElapsed) / (1.0 * contactsToUpdate.size())) << " msec per updated contact )";
    elapsedTimeTotal += presenceElapsed;

    // clean up the "more prefill data"
    qDebug() << "    cleaning up extra prefill data, please wait...";
    QList<ContactIdType> morePrefillIds;
    for (int j = 0; j < morePrefillData.size(); ++j) {
        morePrefillIds.append(retrievalId(morePrefillData.at(j)));
    }

    manager.removeContacts(morePrefillIds);

    // the fourth presence update test checks update time for non-overlapping sets of data.
    qDebug() << "    generating non-overlapping / aggregated prefill data, please wait...";
    morePrefillData.clear();
    for (int i = 0; i < 1000; ++i) {
        morePrefillData.append(generateContact("test-presence-4", false)); // false = don't aggregate.
    }
    manager.saveContacts(&morePrefillData);

    // now do the update
    contactsToUpdate.clear();
    timestamp = QDateTime::currentDateTime();
    for (int j = 0; j < morePrefillData.size(); ++j) {
        QContact curr = morePrefillData.at(j);
        QString genstr = QString::number(j) + "4";
        QContactPresence cp = curr.detail<QContactPresence>();
        QContactNickname nn = curr.detail<QContactNickname>();
        QContactAvatar av = curr.detail<QContactAvatar>();
        cp.setNickname(genstr);
        cp.setCustomMessage(genstr);
        cp.setTimestamp(timestamp);
        cp.setPresenceState(static_cast<QContactPresence::PresenceState>((qrand() % 4) + 1));
        nn.setNickname(nn.nickname() + genstr);
        av.setImageUrl(genstr + presenceAvatars.at(qrand() % presenceAvatars.size()));
        curr.saveDetail(&cp);
        curr.saveDetail(&nn);
        curr.saveDetail(&av);
        contactsToUpdate.append(curr);
    }

    // perform a batch save.
    syncTimer.start();
    manager.saveContacts(&contactsToUpdate);
    presenceElapsed = syncTimer.elapsed();
    totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "    update ( batch of" << contactsToUpdate.size() << ") presence+nick+avatar (with" << totalAggregatesInDatabase << "existing in database, no overlap):" << presenceElapsed
             << "milliseconds (" << ((1.0 * presenceElapsed) / (1.0 * contactsToUpdate.size())) << " msec per updated contact )";
    elapsedTimeTotal += presenceElapsed;

    // clean up the "more prefill data"
    qDebug() << "    cleaning up extra prefill data, please wait...";
#ifdef USING_QTPIM
    morePrefillIds.clear();
    for (int j = 0; j < morePrefillData.size(); ++j) {
        morePrefillIds.append(morePrefillData.at(j).id());
    }
#else
    morePrefillIds.clear();
    for (int j = 0; j < morePrefillData.size(); ++j) {
        morePrefillIds.append(morePrefillData.at(j).localId());
    }
#endif
    manager.removeContacts(morePrefillIds);

    // the fifth presence update test is similar to the above except that half of
    // the extra contacts have a (high) chance of being aggregated into an existing contact.
    // So, database should have 2000 constituents, 1000 from "local", 1000 from "test-presence-5"
    // with 1500 aggregates (about 500 of test-presence-5 contacts will share an aggregate with
    // a local contact).  TODO: check what happens if multiple aggregates for local contacts
    // could possibly match a given test-presence-5 contact (which is possible, since the backend
    // never aggregates two contacts from the same sync source...)
    qDebug() << "    generating partially-overlapping / aggregated prefill data, please wait...";
    morePrefillData.clear();
    for (int i = 0; i < 1000; ++i) {
        if (i < 500) {
            morePrefillData.append(generateContact("test-presence-5", false)); // false = don't aggregate.
        } else {
            morePrefillData.append(generateContact("test-presence-5", true));  // true = possibly aggregate.
        }
    }
    manager.saveContacts(&morePrefillData);

    // now do the update
    contactsToUpdate.clear();
    timestamp = QDateTime::currentDateTime();
    for (int j = 0; j < morePrefillData.size(); ++j) {
        QContact curr = morePrefillData.at(j);
        QString genstr = QString::number(j) + "5";
        QContactPresence cp = curr.detail<QContactPresence>();
        QContactNickname nn = curr.detail<QContactNickname>();
        QContactAvatar av = curr.detail<QContactAvatar>();
        cp.setNickname(genstr);
        cp.setCustomMessage(genstr);
        cp.setTimestamp(timestamp);
        cp.setPresenceState(static_cast<QContactPresence::PresenceState>((qrand() % 4) + 1));
        nn.setNickname(nn.nickname() + genstr);
        av.setImageUrl(genstr + presenceAvatars.at(qrand() % presenceAvatars.size()));
        curr.saveDetail(&cp);
        curr.saveDetail(&nn);
        curr.saveDetail(&av);
        contactsToUpdate.append(curr);
    }

    // perform a batch save.
    syncTimer.start();
    manager.saveContacts(&contactsToUpdate);
    presenceElapsed = syncTimer.elapsed();
    totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "    update ( batch of" << contactsToUpdate.size() << ") presence+nick+avatar (with" << totalAggregatesInDatabase << "existing in database, 500 overlap):" << presenceElapsed
             << "milliseconds (" << ((1.0 * presenceElapsed) / (1.0 * contactsToUpdate.size())) << " msec per updated contact )";
    elapsedTimeTotal += presenceElapsed;

    // the sixth presence update test is identical to the fifth test, except that we ONLY
    // update the presence status (not nickname or avatar).
    morePrefillData = contactsToUpdate;
    contactsToUpdate.clear();
    for (int j = 0; j < morePrefillData.size(); ++j) {
        QContact curr = morePrefillData.at(j);
        QContactPresence cp = curr.detail<QContactPresence>();
        cp.setPresenceState(static_cast<QContactPresence::PresenceState>((qrand() % 4) + 1));
        curr.saveDetail(&cp);
        contactsToUpdate.append(curr);
    }

    // perform a batch save.
    syncTimer.start();
    manager.saveContacts(&contactsToUpdate);
    presenceElapsed = syncTimer.elapsed();
    totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "    update ( batch of" << contactsToUpdate.size() << ") presence only (with" << totalAggregatesInDatabase << "existing in database, 500 overlap):" << presenceElapsed
             << "milliseconds (" << ((1.0 * presenceElapsed) / (1.0 * contactsToUpdate.size())) << " msec per updated contact )";
    elapsedTimeTotal += presenceElapsed;

    // the seventh presence update test is identical to the 6th test, except that
    // we also pass a "detail type mask" to the update.  This allows the backend
    // to perform optimisation based upon which details are modified.
    morePrefillData = contactsToUpdate;
    contactsToUpdate.clear();
    for (int j = 0; j < morePrefillData.size(); ++j) {
        QContact curr = morePrefillData.at(j);
        QContactPresence cp = curr.detail<QContactPresence>();
        cp.setPresenceState(static_cast<QContactPresence::PresenceState>((qrand() % 4) + 1));
        curr.saveDetail(&cp);
        contactsToUpdate.append(curr);
    }

    // perform a batch save.
#ifdef USING_QTPIM
    QList<QContactDetail::DetailType> typeMask;
    typeMask << QContactDetail::TypePresence;
#else
    QStringList typeMask;
    typeMask << QString(QLatin1String(QContactPresence::DefinitionName));
#endif
    syncTimer.start();
    manager.saveContacts(&contactsToUpdate, typeMask);
    presenceElapsed = syncTimer.elapsed();
    totalAggregatesInDatabase = manager.contactIds().count();
    qDebug() << "    update ( batch of" << contactsToUpdate.size() << ") masked presence only (with" << totalAggregatesInDatabase << "existing in database, 500 overlap):" << presenceElapsed
             << "milliseconds (" << ((1.0 * presenceElapsed) / (1.0 * contactsToUpdate.size())) << " msec per updated contact )";
    elapsedTimeTotal += presenceElapsed;

    // clean up the "more prefill data"
    qDebug() << "    cleaning up extra prefill data, please wait...";
#ifdef USING_QTPIM
    morePrefillIds.clear();
    for (int j = 0; j < morePrefillData.size(); ++j) {
        morePrefillIds.append(morePrefillData.at(j).id());
    }
#else
    morePrefillIds.clear();
    for (int j = 0; j < morePrefillData.size(); ++j) {
        morePrefillIds.append(morePrefillData.at(j).localId());
    }
#endif
    manager.removeContacts(morePrefillIds);

    qDebug() << "\n\nCumulative elapsed time:" << elapsedTimeTotal << "milliseconds";
    return 0;
}