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Rounds out a rough implementation of CategoryListQuery that supports

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multiple predicates, including extended metadata. Needs to be
generalized so it can work with AlbumListQuery and
CategoryTrackListQuery.
This commit is contained in:
casey langen 2018-01-03 00:27:22 -08:00
parent 912bf13ef3
commit 3659395af5
3 changed files with 224 additions and 133 deletions
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4
src/core/library/LocalLibrary.cpp
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@ -609,7 +609,11 @@ void LocalLibrary::CreateIndexes(db::Connection &db) {
db.Execute("CREATE INDEX IF NOT EXISTS trackmeta_index1 ON track_meta (track_id,meta_value_id)");
db.Execute("CREATE INDEX IF NOT EXISTS trackmeta_index2 ON track_meta (meta_value_id,track_id)");
db.Execute("CREATE INDEX IF NOT EXISTS metakey_index1 ON meta_keys (name)");
db.Execute("CREATE INDEX IF NOT EXISTS metakey_index2 ON meta_keys (id, name)");
db.Execute("CREATE INDEX IF NOT EXISTS metavalues_index1 ON meta_values (meta_key_id)");
db.Execute("CREATE INDEX IF NOT EXISTS metavalues_index2 ON meta_values (content)");
db.Execute("CREATE INDEX IF NOT EXISTS metavalues_index3 ON meta_values (id, meta_key_id, content)");
db.Execute("CREATE INDEX IF NOT EXISTS metavalues_index4 ON meta_values (id, content)");
db.Execute("CREATE INDEX IF NOT EXISTS tracks_external_id_index ON tracks (external_id)");

324
src/core/library/query/local/CategoryListQuery.cpp
View File

@ -50,7 +50,7 @@ using namespace musik::core::db::local;
#define RESET_RESULT(x) x.reset(new std::vector<std::shared_ptr<Result>>);
#if 0
#if 1
#ifdef WIN32
#define DUMP(x) OutputDebugStringA(x.c_str()); OutputDebugStringA("\n");
#else
@ -59,19 +59,6 @@ using namespace musik::core::db::local;
#endif
#endif
static const std::string REGULAR_QUERY_PREDICATE = " AND %s=? ";
static const std::string REGULAR_QUERY_PREDICATE_TABLES = "";
static const std::string EXTENDED_QUERY_PREDICATE_TABLES =
", track_meta tm, meta_keys mk, meta_values mv ";
static const std::string EXTENDED_QUERY_PREDICATE =
" AND tracks.id=tm.track_id "
" AND tm.meta_value_id=mv.id "
" AND mv.meta_key_id=mk.id "
" AND mk.id=? "
" AND mv.id=? ";
static std::map<std::string, std::string> PREDICATE_TO_COLUMN_MAP = {
{ Track::ALBUM, "album_id" },
{ Track::ARTIST, "visual_artist_id" },
@ -79,55 +66,49 @@ static std::map<std::string, std::string> PREDICATE_TO_COLUMN_MAP = {
{ Track::GENRE, "visual_genre_id" }
};
static std::map<std::string, std::pair<std::string, std::string>> PROPERTY_MAP = {
{ "album",{ "albums", "album_id" } },
{ "artist",{ "artists", "visual_artist_id" } },
{ "album_artist",{ "artists", "album_artist_id" } },
static std::map<std::string, std::pair<std::string, std::string>> REGULAR_PROPERTY_MAP = {
{ "album", { "albums", "album_id" } },
{ "artist", { "artists", "visual_artist_id" } },
{ "album_artist", { "artists", "album_artist_id" } },
{ "genre", { "genres", "visual_genre_id" } }
};
static const std::string UNFILTERED_PROPERTY_QUERY =
"SELECT DISTINCT {{table}}.id, {{table}}.name "
"FROM {{table}}, tracks {{extended_tables}} "
"WHERE {{table}}.id = tracks.{{id_column}} AND tracks.visible = 1 {{predicate}}"
"ORDER BY {{table}}.sort_order;";
static const std::string REGULAR_PREDICATE = " tracks.{{fk_id}}=? ";
static const std::string REGULAR_FILTER = " AND LOWER({{table}}.name) LIKE ? ";
static const std::string FILTERED_PROPERTY_QUERY =
"SELECT DISTINCT {{table}}.id, {{table}}.name "
"FROM {{table}}, tracks {{extended_tables}} "
"WHERE {{table}}.id = tracks.{{id_column}} AND LOWER({{table}}.name) LIKE ? AND tracks.visible = 1 {{predicate}} "
"ORDER BY {{table}}.sort_order;";
static const std::string EXTENDED_PREDICATE = " (key=? AND meta_value_id=?) ";
static const std::string EXTENDED_FILTER = " AND LOWER(extended_metadata.value) LIKE ?";
//static const std::string UNFILTERED_EXTENDED_PROPERTY_QUERY =
// "SELECT DISTINCT meta_values.* "
// "FROM meta_values, track_meta, tracks "
// "WHERE "
// " meta_values.id = track_meta.meta_value_id AND "
// " track_meta.track_id = tracks.id AND "
// " tracks.visible = 1 AND "
// " meta_values.meta_key_id IN( "
// " SELECT DISTINCT meta_keys.id "
// " FROM meta_keys "
// " WHERE LOWER(meta_keys.name) = LOWER(?) "
// " ) "
// "{{predicate}} "
// "ORDER BY meta_values.content ASC";
//
//static const std::string FILTERED_EXTENDED_PROPERTY_QUERY =
// "SELECT DISTINCT meta_values.* "
// "FROM meta_values, track_meta, tracks "
// "WHERE "
// " meta_values.id = track_meta.meta_value_id AND "
// " track_meta.track_id = tracks.id AND "
// " tracks.visible = 1 AND "
// " meta_values.meta_key_id IN( "
// " SELECT DISTINCT meta_keys.id "
// " FROM meta_keys "
// " WHERE LOWER(meta_keys.name) = LOWER(?) "
// " ) "
// "AND LOWER(meta_values.content) LIKE LOWER(?) "
// "{{predicate}} "
// "ORDER BY meta_values.content ASC";
static const std::string EXTENDED_INNER_JOIN =
"INNER JOIN ( "
" SELECT id AS track_id "
" FROM extended_metadata "
" WHERE {{extended_predicates}} "
" GROUP BY track_id "
" HAVING COUNT(track_id)={{extended_predicate_count}} "
") AS md ON tracks.id=md.track_id ";
static const std::string REGULAR_PROPERTY_QUERY =
"SELECT DISTINCT {{table}}.id, {{table}}.name "
"FROM {{table}}, tracks "
"{{extended_predicates}} "
"WHERE {{table}}.id=tracks.{{fk_id}} AND tracks.visible=1 "
"{{regular_predicates}} "
"{{regular_filter}} "
"ORDER BY {{table}}.sort_order";
static const std::string EXTENDED_PROPERTY_QUERY =
"SELECT DISTINCT meta_value_id, value "
"FROM extended_metadata "
"INNER JOIN ( "
" SELECT id AS track_id "
" FROM tracks "
" WHERE tracks.visible=1 {{regular_predicates}} "
") AS reg on extended_metadata.id=reg.track_id "
"{{extended_predicates}} "
"WHERE extended_metadata.key=? "
"{{extended_filter}} "
"ORDER BY extended_metadata.value ASC";
static const std::string UNFILTERED_PLAYLISTS_QUERY =
"SELECT DISTINCT id, name "
@ -140,6 +121,19 @@ static const std::string FILTERED_PLAYLISTS_QUERY =
"WHERE LOWER(name) LIKE LOWER(?) "
"ORDER BY name;";
/* quick and dirty structures used to track bind arguments */
struct Id : public CategoryListQuery::Argument {
int64_t id;
Id(int64_t id) : id(id) { }
virtual void Bind(Statement& stmt, int pos) const { stmt.BindInt64(pos, id); }
};
struct String : public CategoryListQuery::Argument {
std::string str;
String(const std::string& str) : str(str) { }
virtual void Bind(Statement& stmt, int pos) const { stmt.BindText(pos, str.c_str()); }
};
/* data structure that we can return to plugins who need metadata info */
class ValueList : public musik::core::sdk::IValueList {
public:
@ -173,15 +167,21 @@ static void replaceAll(std::string& input, const std::string& find, const std::s
CategoryListQuery::CategoryListQuery(
const std::string& trackField, const std::string& filter)
: CategoryListQuery(trackField, { "", -1LL }, filter) {
: CategoryListQuery(trackField, PredicateList(), filter) {
}
CategoryListQuery::CategoryListQuery(
const std::string& trackField,
const Predicate predicate,
const std::string& filter)
: CategoryListQuery(trackField, PredicateList{ predicate }, filter) {
}
CategoryListQuery::CategoryListQuery(
const std::string& trackField,
const PredicateList predicates,
const std::string& filter)
: trackField(trackField)
, predicate(predicate)
, filter(filter) {
RESET_RESULT(result);
@ -192,14 +192,25 @@ CategoryListQuery::CategoryListQuery(
this->filter = "%" + wild + "%";
}
if (trackField == "playlists") {
this->type = Playlist;
auto end = REGULAR_PROPERTY_MAP.end();
for (auto p : predicates) {
if (REGULAR_PROPERTY_MAP.find(p.first) != end) {
this->regular.push_back(p);
}
else {
this->extended.push_back(p);
}
}
else if (PROPERTY_MAP.find(trackField) != PROPERTY_MAP.end()) {
this->type = Regular;
if (trackField == "playlists") {
this->outputType = Playlist;
}
else if (REGULAR_PROPERTY_MAP.find(trackField) != end) {
this->outputType = Regular;
}
else {
this->type = Extended;
this->outputType = Extended;
}
}
@ -207,6 +218,63 @@ CategoryListQuery::~CategoryListQuery() {
}
std::string CategoryListQuery::JoinRegular(
const PredicateList& pred, ArgumentList& args, const std::string& prefix)
{
std::string result;
if (pred.size()) {
for (size_t i = 0; i < pred.size(); i++) {
if (i > 0) { result += " AND "; }
auto p = pred[i];
auto str = REGULAR_PREDICATE;
auto map = REGULAR_PROPERTY_MAP[p.first];
replaceAll(str, "{{fk_id}}", map.second);
result += str;
args.push_back(std::make_shared<Id>(p.second));
}
if (prefix.size()) {
result = prefix + result;
}
}
return result;
}
std::string CategoryListQuery::InnerJoinExtended(
const PredicateList& pred, ArgumentList& args)
{
std::string result;
std::string joined = JoinExtended(pred, args);
if (joined.size()) {
result = EXTENDED_INNER_JOIN;
replaceAll(result, "{{extended_predicates}}", joined);
replaceAll(result, "{{extended_predicate_count}}", std::to_string(pred.size()));
}
return result;
}
std::string CategoryListQuery::JoinExtended(
const PredicateList& pred, ArgumentList& args)
{
std::string result;
for (size_t i = 0; i < pred.size(); i++) {
if (i > 0) { result += " OR "; }
result += EXTENDED_PREDICATE;
auto p = pred[i];
args.push_back(std::make_shared<String>(p.first));
args.push_back(std::make_shared<Id>(p.second));
}
return result;
}
void CategoryListQuery::Apply(Statement& stmt, const ArgumentList& args) {
for (size_t i = 0; i < args.size(); i++) {
args[i]->Bind(stmt, (int) i);
}
}
CategoryListQuery::ResultList CategoryListQuery::GetResult() {
return this->result;
}
@ -225,82 +293,72 @@ int CategoryListQuery::GetIndexOf(int64_t id) {
return -1;
}
void CategoryListQuery::QueryRegular(musik::core::db::Connection &db) {
bool filtered = this->filter.size() > 0;
void CategoryListQuery::QueryPlaylist(musik::core::db::Connection& db) {
bool filtered = this->filter.size();
bool predicated =
predicate.first.size() &&
predicate.first != Playlists::TABLE_NAME &&
predicate.second > 0;
std::string query = filtered
? FILTERED_PLAYLISTS_QUERY
: UNFILTERED_PLAYLISTS_QUERY;
std::string query;
if (this->type == Playlist) {
query = filtered ? FILTERED_PLAYLISTS_QUERY : UNFILTERED_PLAYLISTS_QUERY;
}
else {
query = filtered ? FILTERED_PROPERTY_QUERY : UNFILTERED_PROPERTY_QUERY;
auto fields = PROPERTY_MAP.find(this->trackField);
replaceAll(query, "{{table}}", fields->second.first);
replaceAll(query, "{{id_column}}", fields->second.second);
}
int64_t extendedKeyId = 0;
std::string predicateTables = "";
std::string predicateStatement = "";
if (predicated) {
auto end = PREDICATE_TO_COLUMN_MAP.end();
if (PREDICATE_TO_COLUMN_MAP.find(predicate.first) != end) {
/* regular/simple/optimized predicate... */
predicateStatement = boost::str(boost::format(
REGULAR_QUERY_PREDICATE) % PREDICATE_TO_COLUMN_MAP[predicate.first]);
predicateTables = REGULAR_QUERY_PREDICATE_TABLES;
}
else {
/* extended metadata predicate. gotta do more work. whee... */
Statement keyQuery("SELECT DISTINCT id FROM meta_keys WHERE LOWER(name)=LOWER(?)", db);
keyQuery.BindText(0, this->predicate.first);
if (keyQuery.Step() == db::Row) {
extendedKeyId = keyQuery.ColumnInt64(0);
}
if (extendedKeyId > 0) {
predicateStatement = EXTENDED_QUERY_PREDICATE;
predicateTables = EXTENDED_QUERY_PREDICATE_TABLES;
}
else {
predicated = false;
}
}
}
replaceAll(query, "{{predicate}}", predicateStatement);
replaceAll(query, "{{extended_tables}}", predicateTables);
int bindIndex = 0;
Statement stmt(query.c_str(), db);
Statement stmt(query.c_str() , db);
if (filtered) {
stmt.BindText(bindIndex++, this->filter);
stmt.BindText(0, this->filter);
}
if (predicated) {
if (extendedKeyId > 0) {
stmt.BindInt64(bindIndex++, extendedKeyId);
stmt.BindInt64(bindIndex++, predicate.second);
}
else {
stmt.BindInt64(bindIndex++, predicate.second);
}
ProcessResult(stmt);
}
void CategoryListQuery::QueryRegular(musik::core::db::Connection &db) {
ArgumentList args;
auto prop = REGULAR_PROPERTY_MAP[this->trackField];
std::string query = REGULAR_PROPERTY_QUERY;
std::string extended = InnerJoinExtended(this->extended, args);
std::string regular = JoinRegular(this->regular, args, " AND ");
std::string regularFilter;
if (this->filter.size()) {
regularFilter = REGULAR_FILTER;
replaceAll(regularFilter, "{{table}}", prop.first);
args.push_back(std::make_shared<String>(this->filter));
}
this->ProcessResult(stmt);
replaceAll(query, "{{table}}", prop.first);
replaceAll(query, "{{fk_id}}", prop.second);
replaceAll(query, "{{extended_predicates}}", extended);
replaceAll(query, "{{regular_predicates}}", regular);
replaceAll(query, "{{regular_filter}}", regularFilter);
Statement stmt(query.c_str(), db);
Apply(stmt, args);
ProcessResult(stmt);
}
void CategoryListQuery::QueryExtended(musik::core::db::Connection &db) {
ArgumentList args;
std::string query = EXTENDED_PROPERTY_QUERY;
std::string regular = JoinRegular(this->regular, args, " AND ");
std::string extended = InnerJoinExtended(this->extended, args);
std::string extendedFilter;
if (this->filter.size()) {
extendedFilter = EXTENDED_FILTER;
args.push_back(std::make_shared<String>(this->filter));
}
replaceAll(query, "{{regular_predicates}}", regular);
replaceAll(query, "{{extended_predicates}}", extended);
replaceAll(query, "{{extended_filter}}", extendedFilter);
args.push_back(std::make_shared<String>(this->trackField));
DUMP(query);
Statement stmt(query.c_str(), db);
Apply(stmt, args);
ProcessResult(stmt);
}
void CategoryListQuery::ProcessResult(musik::core::db::Statement &stmt) {
@ -315,6 +373,12 @@ void CategoryListQuery::ProcessResult(musik::core::db::Statement &stmt) {
bool CategoryListQuery::OnRun(Connection& db) {
RESET_RESULT(result);
(this->type == Extended) ? QueryExtended(db) : QueryRegular(db);
switch (this->outputType) {
case Playlist: QueryPlaylist(db); break;
case Regular: QueryRegular(db); break;
case Extended: QueryExtended(db); break;
}
return true;
}

29
src/core/library/query/local/CategoryListQuery.h
View File

@ -74,6 +74,8 @@ namespace musik { namespace core { namespace db { namespace local {
using Predicate = std::pair<std::string, int64_t>;
using PredicateList = std::vector<Predicate>;
struct Argument { virtual void Bind(Statement& stmt, int pos) const = 0; };
using ArgumentList = std::vector<std::shared_ptr<Argument>>;
typedef std::shared_ptr<std::vector<
std::shared_ptr<Result> > > ResultList;
@ -87,6 +89,11 @@ namespace musik { namespace core { namespace db { namespace local {
const Predicate predicate,
const std::string& filter = "");
CategoryListQuery(
const std::string& trackField,
const PredicateList predicate,
const std::string& filter = "");
virtual ~CategoryListQuery();
std::string Name() { return "CategoryListQuery"; }
@ -100,16 +107,32 @@ namespace musik { namespace core { namespace db { namespace local {
virtual bool OnRun(musik::core::db::Connection &db);
private:
enum Type { Regular, Extended, Playlist };
enum OutputType { Regular, Extended, Playlist };
void QueryPlaylist(musik::core::db::Connection &db);
void QueryRegular(musik::core::db::Connection &db);
void QueryExtended(musik::core::db::Connection &db);
void ProcessResult(musik::core::db::Statement &stmt);
static std::string JoinRegular(
const PredicateList& pred,
ArgumentList& args,
const std::string& prefix = "");
static std::string InnerJoinExtended(
const PredicateList& pred, ArgumentList& args);
static std::string JoinExtended(
const PredicateList& pred, ArgumentList& args);
static void Apply(
musik::core::db::Statement& stmt,
const ArgumentList& args);
std::string trackField;
std::string filter;
Type type;
Predicate predicate;
OutputType outputType;
PredicateList regular, extended;
ResultList result;
};