本文整理汇总了C++中MediaQuery::executeSelect方法的典型用法代码示例。如果您正苦于以下问题：C++ MediaQuery::executeSelect方法的具体用法？C++ MediaQuery::executeSelect怎么用？C++ MediaQuery::executeSelect使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MediaQuery的用法示例。
在下文中一共展示了MediaQuery::executeSelect方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: run
void AudioStreamListEngine::run()
{
QThread::setTerminationEnabled(true);
m_stop = false;
if (m_updateSourceInfo || m_removeSourceInfo) {
NepomukListEngine::run();
return;
}
//Create media list based on engine argument and filter
QList<MediaItem> mediaList;
MediaVocabulary mediaVocabulary = MediaVocabulary();
QString engineArg = m_mediaListProperties.engineArg();
QString engineFilter = m_mediaListProperties.engineFilter();
if (m_nepomukInited) {
if (engineArg.isEmpty()) {
MediaQuery query;
QStringList bindings;
bindings.append(mediaVocabulary.mediaResourceBinding());
bindings.append(mediaVocabulary.mediaResourceUrlBinding());
bindings.append(mediaVocabulary.titleBinding());
bindings.append(mediaVocabulary.ratingBinding());
bindings.append(mediaVocabulary.descriptionBinding());
bindings.append(mediaVocabulary.artworkBinding());
//bindings.append(mediaVocabulary.genreBinding());
query.select(bindings, MediaQuery::Distinct);
query.startWhere();
query.addCondition(mediaVocabulary.hasTypeAudioStream(MediaQuery::Required));
query.addCondition(mediaVocabulary.hasTitle(MediaQuery::Required));
query.addCondition(mediaVocabulary.hasRating(MediaQuery::Optional));
query.addCondition(mediaVocabulary.hasDescription(MediaQuery::Optional));
query.addCondition(mediaVocabulary.hasArtwork(MediaQuery::Optional));
query.endWhere();
QStringList orderByBindings;
orderByBindings.append(mediaVocabulary.titleBinding());
query.orderBy(orderByBindings);
Soprano::QueryResultIterator it = query.executeSelect(m_mainModel);
//Build media list from results
while( it.next() ) {
if (m_stop) {
return;
}
MediaItem mediaItem = Utilities::mediaItemFromIterator(it, QString("Audio Stream"), m_mediaListProperties.lri);
if (!mediaItem.url.startsWith(QLatin1String("nepomuk:/"))) {
mediaList.append(mediaItem);
}
}
m_mediaListProperties.summary = i18np("1 stream", "%1 streams", mediaList.count());
MediaItem mediaItem;
mediaItem.type = "Audio";
mediaItem.url.clear();
mediaItem.title = i18n("New Audio Stream");
mediaItem.subTitle = i18n("Edit info to create new audio stream");
mediaItem.artwork = KIcon("text-html");
mediaItem.fields["title"] = i18n("Untitled");
mediaItem.fields["audioType"] = "Audio Stream";
mediaItem.fields["isTemplate"] = true;
mediaList.append(mediaItem);
m_mediaListProperties.type = QString("Sources");
} else if (engineArg.toLower() == "search") {
MediaQuery query;
QStringList bindings;
bindings.append(mediaVocabulary.mediaResourceBinding());
bindings.append(mediaVocabulary.mediaResourceUrlBinding());
bindings.append(mediaVocabulary.titleBinding());
bindings.append(mediaVocabulary.ratingBinding());
bindings.append(mediaVocabulary.descriptionBinding());
bindings.append(mediaVocabulary.artworkBinding());
//bindings.append(mediaVocabulary.genreBinding());
query.select(bindings, MediaQuery::Distinct);
query.startWhere();
query.addCondition(mediaVocabulary.hasTypeAudioStream(MediaQuery::Required));
query.addCondition(mediaVocabulary.hasTitle(MediaQuery::Required));
query.addCondition(mediaVocabulary.hasRating(MediaQuery::Optional));
query.addCondition(mediaVocabulary.hasDescription(MediaQuery::Optional));
query.addCondition(mediaVocabulary.hasArtwork(MediaQuery::Optional));
query.startFilter();
query.addFilterConstraint(mediaVocabulary.titleBinding(), engineFilter, MediaQuery::Contains);
query.addFilterOr();
query.addFilterConstraint(mediaVocabulary.descriptionBinding(), engineFilter, MediaQuery::Contains);
query.endFilter();
query.endWhere();
QStringList orderByBindings;
orderByBindings.append(mediaVocabulary.titleBinding());
query.orderBy(orderByBindings);
Soprano::QueryResultIterator it = query.executeSelect(m_mainModel);
//Build media list from results
while( it.next() ) {
MediaItem mediaItem = Utilities::mediaItemFromIterator(it, QString("Audio Stream"), m_mediaListProperties.lri);
//.........这里部分代码省略.........
示例2: run
//.........这里部分代码省略.........
bindings.append(query.fieldBindingDictionary[groupByField]);
bindings.append(MediaQuery::aggregateBinding(mediaVocabulary.playCountBinding(), MediaQuery::Sum));
query.select(bindings, MediaQuery::Distinct);
query.startWhere();
MediaQuery subQuery;
QStringList subBindings;
subBindings.append(mediaVocabulary.playCountBinding());
subBindings.append(mediaVocabulary.mediaResourceBinding());
subQuery.select(subBindings, MediaQuery::Distinct);
subQuery.startWhere();
if (mediaType == "audio") {
subQuery.addCondition(mediaVocabulary.hasTypeAnyAudio(MediaQuery::Required));
} else if (mediaType == "video") {
subQuery.addCondition(mediaVocabulary.hasTypeAnyVideo(MediaQuery::Required));
}
if (m_mediaListProperties.filterForField("playCount").isEmpty()) {
subQuery.addCondition(mediaVocabulary.hasPlayCount(MediaQuery::Required, 0, MediaQuery::GreaterThan));
ignoreZeros = true;
}
QStringList subQueryLRIFilterList = engineFilterList;
subQueryLRIFilterList.removeAll(limitFilter);
subQuery.addLRIFilterConditions(subQueryLRIFilterList, mediaVocabulary);
subQuery.endWhere();
query.addSubQuery(subQuery);
query.endWhere();
query.addLRIFilterCondition(limitFilter, mediaVocabulary);
QStringList orderByBindings;
QList<MediaQuery::Order> order;
orderByBindings.append(QString("%1_sum").arg(mediaVocabulary.playCountBinding()));
order.append(MediaQuery::Descending);
query.orderBy(orderByBindings, order);
}
Soprano::QueryResultIterator it = query.executeSelect(m_mainModel);
//Build media list from results
while( it.next() ) {
if (m_stop) {
return;
}
MediaItem mediaItem;
if (groupByCategoryType.isEmpty()) {
Nepomuk::Resource res = Nepomuk::Resource(it.binding(mediaVocabulary.mediaResourceBinding()).uri());
mediaItem = Utilities::mediaItemFromNepomuk(res, m_mediaListProperties.lri);
mediaItem.semanticComment = i18np("played once", "played %1 times", mediaItem.fields["playCount"].toInt());
} else {
mediaItem = Utilities::categoryMediaItemFromIterator(it, groupByCategoryType, m_mediaListProperties.lri);
int playCount = it.binding(QString("%1_sum").arg(mediaVocabulary.playCountBinding())).literal().toInt();
mediaItem.semanticComment = i18np("played once", "played %1 times", playCount);
mediaItem.fields["playCount"] = playCount;
}
if (!mediaItem.url.startsWith("nepomuk:/")) {
if ((ignoreZeros && mediaItem.fields["playCount"].toInt() > 0) ||
!ignoreZeros) {
if (groupByCategoryType == "AudioGenre") {
addUniqueGenreGroup("playCount", mediaItem, &mediaList, originalGenreLimit);
} else {
mediaList.append(mediaItem);
}
}
}
}
m_mediaListProperties.name = i18n("Frequently Played");
m_mediaListProperties.type = QString("Sources");
}
}