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Work on unified DB message saving.

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This commit is contained in:
Martin Rotter 2016-02-23 12:54:43 +01:00
parent 5ac5eb8fa2
commit ee04eb87c7
3 changed files with 32 additions and 27 deletions
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51
src/services/abstract/feed.cpp
View file

@ -105,7 +105,8 @@ void Feed::setCountOfUnreadMessages(int count_unread_messages) {
}
int Feed::update() {
return updateMessages(obtainNewMessages());
QList<Message> msgs = obtainNewMessages();
return updateMessages(msgs);
}
void Feed::setAutoUpdateInitialInterval(int auto_update_interval) {
@ -141,11 +142,11 @@ int Feed::updateMessages(const QList<Message> &messages) {
int custom_id = customId();
int account_id = getParentServiceRoot()->accountId();
int updated_messages = 0;
bool anything_duplicated = false;
bool anything_updated = false;
QSqlDatabase database = qApp->database()->connection(metaObject()->className(), DatabaseFactory::FromSettings);
// Prepare queries.
QSqlQuery query_select(database);
QSqlQuery query_select_with_url(database);
QSqlQuery query_select_with_id(database);
QSqlQuery query_update(database);
QSqlQuery query_insert(database);
@ -155,10 +156,12 @@ int Feed::updateMessages(const QList<Message> &messages) {
// 1) they belong to the same feed AND,
// 2) they have same URL AND,
// 3) they have same AUTHOR.
query_select.setForwardOnly(true);
query_select.prepare("SELECT id, date_created, is_read, is_important FROM Messages "
query_select_with_url.setForwardOnly(true);
query_select_with_url.prepare("SELECT id, date_created, is_read, is_important FROM Messages "
"WHERE feed = :feed AND url = :url AND author = :author AND account_id = :account_id;");
// When we have custom ID of the message, we can check directly for existence
// of that particular message.
query_select_with_id.setForwardOnly(true);
query_select_with_id.prepare("SELECT id, date_created, is_read, is_important FROM Messages "
"WHERE custom_id = :custom_id AND account_id = :account_id;");
@ -203,28 +206,26 @@ int Feed::updateMessages(const QList<Message> &messages) {
if (message.m_customId.isEmpty()) {
// We need to recognize existing messages according URL & AUTHOR.
query_select.bindValue(QSL(":feed"), custom_id);
query_select.bindValue(QSL(":url"), message.m_url);
query_select.bindValue(QSL(":author"), message.m_author);
query_select.bindValue(QSL(":account_id"), account_id);
query_select.exec();
query_select_with_url.bindValue(QSL(":feed"), custom_id);
query_select_with_url.bindValue(QSL(":url"), message.m_url);
query_select_with_url.bindValue(QSL(":author"), message.m_author);
query_select_with_url.bindValue(QSL(":account_id"), account_id);
if (query_select.next()) {
id_existing_message = query_select.value(0).toInt();
date_existing_message = query_select.value(1).value<qint64>();
is_read_existing_message = query_select.value(2).toBool();
is_important_existing_message = query_select.value(3).toBool();
if (query_select_with_url.exec() && query_select_with_url.next()) {
id_existing_message = query_select_with_url.value(0).toInt();
date_existing_message = query_select_with_url.value(1).value<qint64>();
is_read_existing_message = query_select_with_url.value(2).toBool();
is_important_existing_message = query_select_with_url.value(3).toBool();
}
query_select.finish();
query_select_with_url.finish();
}
else {
// We can recognize existing messages via their custom ID.
query_select_with_id.bindValue(QSL(":account_id"), account_id);
query_select_with_id.bindValue(QSL(":custom_id"), message.m_customId);
query_select_with_id.exec();
if (query_select_with_id.next()) {
if (query_select_with_id.exec() && query_select_with_id.next()) {
id_existing_message = query_select_with_id.value(0).toInt();
date_existing_message = query_select_with_id.value(1).value<qint64>();
is_read_existing_message = query_select_with_id.value(2).toBool();
@ -237,13 +238,12 @@ int Feed::updateMessages(const QList<Message> &messages) {
// Now, check if this message is already in the DB.
if (id_existing_message >= 0) {
// Message is already in the DB.
// Now, we update at least one of next conditions is true:
//
// Now, we update it if at least one of next conditions is true:
// 1) Message has custom ID AND (its date OR read status OR starred status are changed).
// 2) Message has its date fetched from feed AND its date is different from date in DB.
if (message.m_created.toMSecsSinceEpoch() != date_existing_message ||
message.m_isRead != is_read_existing_message ||
message.m_isImportant != is_important_existing_message) {
if (/* 1 */ (!message.m_customId.isEmpty() && (message.m_created.toMSecsSinceEpoch() != date_existing_message || message.m_isRead != is_read_existing_message || message.m_isImportant != is_important_existing_message)) ||
/* 2 */ (message.m_createdFromFeed && message.m_created.toMSecsSinceEpoch() > date_existing_message)) {
// Message exists, it is changed, update it.
query_update.bindValue(QSL(":title"), message.m_title);
query_update.bindValue(QSL(":is_read"), (int) message.m_isRead);
@ -255,6 +255,8 @@ int Feed::updateMessages(const QList<Message> &messages) {
query_update.bindValue(QSL(":enclosures"), Enclosures::encodeEnclosuresToString(message.m_enclosures));
query_update.bindValue(QSL(":id"), id_existing_message);
anything_updated = true;
if (query_update.exec()) {
updated_messages++;
}
@ -286,7 +288,6 @@ int Feed::updateMessages(const QList<Message> &messages) {
}
}
if (!database.commit()) {
database.rollback();
qDebug("Transaction commit for message downloader failed.");
@ -304,7 +305,7 @@ int Feed::updateMessages(const QList<Message> &messages) {
updateCounts(true);
items_to_update.append(this);
if (getParentServiceRoot()->recycleBin() != NULL && anything_duplicated) {
if (getParentServiceRoot()->recycleBin() != NULL && anything_updated ) {
getParentServiceRoot()->recycleBin()->updateCounts(true);
items_to_update.append(getParentServiceRoot()->recycleBin());
}

4
src/services/abstract/feed.h
View file

@ -96,9 +96,11 @@ class Feed : public RootItem {
virtual int messageForeignKeyId() const = 0;
protected:
virtual QList<Message> obtainNewMessages() = 0;
private:
int updateMessages(const QList<Message> &messages);
virtual QList<Message> obtainNewMessages() = 0;
private:
QString m_url;

2
src/services/tt-rss/ttrssfeed.cpp
View file

@ -228,6 +228,8 @@ QList<Message> TtRssFeed::obtainNewMessages() {
}
}
while (newly_added_messages > 0);
return messages;
}
bool TtRssFeed::removeItself() {