103 lines
2.6 KiB
C++
103 lines
2.6 KiB
C++
/* This file is part of Clementine.
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Clementine is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Clementine is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "search.h"
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#include "core/song.h"
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#include <QStringList>
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namespace smart_playlists {
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Search::Search() {
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Reset();
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}
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Search::Search(
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SearchType type, TermList terms, SortType sort_type,
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SearchTerm::Field sort_field, int limit)
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: search_type_(type),
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terms_(terms),
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sort_type_(sort_type),
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sort_field_(sort_field),
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limit_(limit)
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{
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}
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void Search::Reset() {
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search_type_ = Type_And;
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terms_.clear();
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sort_type_ = Sort_Random;
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sort_field_ = SearchTerm::Field_Title;
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limit_ = -1;
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}
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QString Search::ToSql(const QString& songs_table) const {
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QString sql = "SELECT ROWID," + Song::kColumnSpec + " FROM " + songs_table;
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// Add search terms
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QStringList term_sql;
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foreach (const SearchTerm& term, terms_) {
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term_sql += term.ToSql();
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}
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if (!terms_.isEmpty() && search_type_ != Type_All) {
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QString boolean_op = search_type_ == Type_And ? " AND " : " OR ";
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sql += " WHERE " + term_sql.join(boolean_op);
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}
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// Add sort by
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if (sort_type_ == Sort_Random) {
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sql += " ORDER BY random()";
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} else {
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sql += " ORDER BY " + SearchTerm::FieldColumnName(sort_field_)
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+ (sort_type_ == Sort_FieldAsc ? " ASC" : " DESC");
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}
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// Add limit
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if (limit_ != -1) {
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sql += " LIMIT " + QString::number(limit_);
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}
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return sql;
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}
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bool Search::is_valid() const {
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if (search_type_ == Type_All)
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return true;
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return !terms_.isEmpty();
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}
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} // namespace
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QDataStream& operator <<(QDataStream& s, const smart_playlists::Search& search) {
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s << search.terms_;
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s << quint8(search.sort_type_);
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s << quint8(search.sort_field_);
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s << qint32(search.limit_);
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return s;
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}
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QDataStream& operator >>(QDataStream& s, smart_playlists::Search& search) {
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quint8 sort_type, sort_field;
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qint32 limit;
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s >> search.terms_ >> sort_type >> sort_field >> limit;
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search.sort_type_ = smart_playlists::Search::SortType(sort_type);
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search.sort_field_ = smart_playlists::SearchTerm::Field(sort_field);
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search.limit_ = limit;
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return s;
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}
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