110 lines
4.4 KiB
C++
Executable file
110 lines
4.4 KiB
C++
Executable file
// For license of this file, see <project-root-folder>/LICENSE.md.
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#include "core/messagesmodelsqllayer.h"
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#include "definitions/definitions.h"
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#include "miscellaneous/application.h"
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MessagesModelSqlLayer::MessagesModelSqlLayer()
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: m_filter(QSL(DEFAULT_SQL_MESSAGES_FILTER)), m_fieldNames(QMap<int, QString>()),
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m_sortColumns(QList<int>()), m_sortOrders(QList<Qt::SortOrder>()) {
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m_db = qApp->database()->connection(QSL("MessagesModel"), DatabaseFactory::FromSettings);
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// Used is <x>: SELECT <x1>, <x2> FROM ....;
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m_fieldNames[MSG_DB_ID_INDEX] = "Messages.id";
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m_fieldNames[MSG_DB_READ_INDEX] = "Messages.is_read";
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m_fieldNames[MSG_DB_DELETED_INDEX] = "Messages.is_deleted";
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m_fieldNames[MSG_DB_IMPORTANT_INDEX] = "Messages.is_important";
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m_fieldNames[MSG_DB_FEED_TITLE_INDEX] = "Feeds.title";
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m_fieldNames[MSG_DB_TITLE_INDEX] = "Messages.title";
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m_fieldNames[MSG_DB_URL_INDEX] = "Messages.url";
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m_fieldNames[MSG_DB_AUTHOR_INDEX] = "Messages.author";
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m_fieldNames[MSG_DB_DCREATED_INDEX] = "Messages.date_created";
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m_fieldNames[MSG_DB_CONTENTS_INDEX] = "Messages.contents";
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m_fieldNames[MSG_DB_PDELETED_INDEX] = "Messages.is_pdeleted";
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m_fieldNames[MSG_DB_ENCLOSURES_INDEX] = "Messages.enclosures";
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m_fieldNames[MSG_DB_ACCOUNT_ID_INDEX] = "Messages.account_id";
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m_fieldNames[MSG_DB_CUSTOM_ID_INDEX] = "Messages.custom_id";
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m_fieldNames[MSG_DB_CUSTOM_HASH_INDEX] = "Messages.custom_hash";
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m_fieldNames[MSG_DB_FEED_CUSTOM_ID_INDEX] = "Messages.feed";
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m_fieldNames[MSG_DB_HAS_ENCLOSURES] = "CASE WHEN length(Messages.enclosures) > 10 THEN 'true' ELSE 'false' END AS has_enclosures";
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// Used is <x>: SELECT ... FROM ... ORDER BY <x1> DESC, <x2> ASC;
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m_orderByNames[MSG_DB_ID_INDEX] = "Messages.id";
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m_orderByNames[MSG_DB_READ_INDEX] = "Messages.is_read";
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m_orderByNames[MSG_DB_DELETED_INDEX] = "Messages.is_deleted";
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m_orderByNames[MSG_DB_IMPORTANT_INDEX] = "Messages.is_important";
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m_orderByNames[MSG_DB_FEED_TITLE_INDEX] = "Feeds.title";
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m_orderByNames[MSG_DB_TITLE_INDEX] = "Messages.title";
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m_orderByNames[MSG_DB_URL_INDEX] = "Messages.url";
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m_orderByNames[MSG_DB_AUTHOR_INDEX] = "Messages.author";
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m_orderByNames[MSG_DB_DCREATED_INDEX] = "Messages.date_created";
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m_orderByNames[MSG_DB_CONTENTS_INDEX] = "Messages.contents";
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m_orderByNames[MSG_DB_PDELETED_INDEX] = "Messages.is_pdeleted";
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m_orderByNames[MSG_DB_ENCLOSURES_INDEX] = "Messages.enclosures";
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m_orderByNames[MSG_DB_ACCOUNT_ID_INDEX] = "Messages.account_id";
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m_orderByNames[MSG_DB_CUSTOM_ID_INDEX] = "Messages.custom_id";
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m_orderByNames[MSG_DB_CUSTOM_HASH_INDEX] = "Messages.custom_hash";
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m_orderByNames[MSG_DB_FEED_CUSTOM_ID_INDEX] = "Messages.feed";
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m_orderByNames[MSG_DB_HAS_ENCLOSURES] = "has_enclosures";
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}
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void MessagesModelSqlLayer::addSortState(int column, Qt::SortOrder order) {
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int existing = m_sortColumns.indexOf(column);
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bool is_ctrl_pressed = (QApplication::queryKeyboardModifiers() & Qt::ControlModifier) == Qt::ControlModifier;
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if (existing >= 0) {
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m_sortColumns.removeAt(existing);
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m_sortOrders.removeAt(existing);
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}
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if (m_sortColumns.size() > MAX_MULTICOLUMN_SORT_STATES) {
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// We support only limited number of sort states
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// due to DB performance.
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m_sortColumns.removeAt(0);
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m_sortOrders.removeAt(0);
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}
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if (is_ctrl_pressed) {
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// User is activating the multicolumn sort mode.
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m_sortColumns.append(column);
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m_sortOrders.append(order);
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}
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else {
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m_sortColumns.prepend(column);
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m_sortOrders.prepend(order);
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}
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qDebug("Added sort state, select statement is now:\n'%s'", qPrintable(selectStatement()));
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}
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void MessagesModelSqlLayer::setFilter(const QString& filter) {
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m_filter = filter;
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}
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QString MessagesModelSqlLayer::formatFields() const {
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return m_fieldNames.values().join(QSL(", "));
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}
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QString MessagesModelSqlLayer::selectStatement() const {
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return QL1S("SELECT ") + formatFields() +
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QSL(" FROM Messages LEFT JOIN Feeds ON Messages.feed = Feeds.custom_id AND Messages.account_id = Feeds.account_id WHERE ") +
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m_filter + orderByClause() + QL1C(';');
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}
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QString MessagesModelSqlLayer::orderByClause() const {
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if (m_sortColumns.isEmpty()) {
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return QString();
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}
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else {
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QStringList sorts;
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for (int i = 0; i < m_sortColumns.size(); i++) {
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QString field_name(m_orderByNames[m_sortColumns[i]]);
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sorts.append(field_name + (m_sortOrders[i] == Qt::AscendingOrder ? QSL(" ASC") : QSL(" DESC")));
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}
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return QL1S(" ORDER BY ") + sorts.join(QSL(", "));
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}
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}
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