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root/repos/DecentralizedMedia/Library.cpp

Comparing DecentralizedMedia/Library.cpp (file contents):
Revision 549 by douglas, 2005-07-04T21:28:02-07:00 vs.
Revision 558 by douglas, 2005-07-17T00:50:52-07:00

#	Line 4 | Line 4
4		//
5		// $Id$
6
7	<	#include <menes/standard.hh>
7	>	#include <menes/cxx/standard.hh>
8
9		#include <menes/dbi/resultset.hpp>
10
11		#include "Library.hpp"
12
13	<	Library::Library(const _R<dbi::Connection>& connection) : connection(connection)
13	>	Library::Library(const _R<Connector>& connector) : connector(connector)
14		{
15	+	_R<dbi::Connection> connection(connector->Connect());
16	+
17		connection->Execute(_B("UPDATE files SET live = FALSE"));
18	+
19	+	connector->Release(connection);
20		}
21
22	<	_L<cse::String> Library::GetArtists() const
22	>	_L<MediaFolder> Library::GetFolders(unsigned page) const
23		{
24	<	_R<dbi::ResultSet> artists_(connection->Execute(_B("SELECT DISTINCT artist FROM files WHERE live = TRUE")));
25	<	_L<cse::String> artists;
24	>	_R<dbi::Connection> connection(connector->Connect());
25	>	_R<dbi::ResultSet> roots(connection->Parse(_B("SELECT DISTINCT root FROM files WHERE live = TRUE ORDER By root LIMIT 50 OFFSET ?"))->Execute(page * 50));
26	>	_L<MediaFolder> folders;
27
28	<	while (artists_->MoveNext())
29	<	artists.InsertLast(artists_->GetString(_B("artist")));
28	>	while (roots->MoveNext())
29	>	folders.InsertLast(GetFolder(roots->GetString(_B("root"))));
30
31	<	return artists;
31	>	connector->Release(connection);
32	>
33	>	return folders;
34		}
35
36	<	_L<cse::String> Library::GetTitles() const
36	>	unsigned Library::GetFoldersPages() const
37		{
38	<	_R<dbi::ResultSet> titles_(connection->Execute(_B("SELECT DISTINCT title FROM files WHERE live = TRUE")));
39	<	_L<cse::String> titles;
38	>	_R<dbi::Connection> connection(connector->Connect());
39	>	_R<dbi::ResultSet> count(connection->Execute(_B("SELECT count(DISTINCT root) FROM files WHERE live = TRUE")));
40	>	unsigned pages(0);
41	>
42	>	if (count->MoveNext())
43	>	pages = (count->Get<unsigned>(_B("count")) + 49) / 50;
44
45	<	while (titles_->MoveNext())
35	<	titles.InsertLast(titles_->GetString(_B("title")));
45	>	connector->Release(connection);
46
47	<	return titles;
47	>	return pages;
48		}
49
50	<	_L<cse::String> Library::GetAlbums() const
50	>	_L<MediaFile> Library::GetFiles(const _L<By>& bys, const _L<cse::String>& items, unsigned page) const
51		{
52	<	_R<dbi::ResultSet> albums_(connection->Execute(_B("SELECT DISTINCT album FROM files WHERE live = TRUE")));
53	<	_L<cse::String> albums;
52	>	if (bys.IsEmpty() || ext::Contains(bys, By::LAST) || bys.GetSize() != items.GetSize())
53	>	return _L<MediaFile>();
54	>
55	>	_S<ios::String> statement_;
56	>
57	>	statement_ << _B("SELECT path FROM files WHERE live = TRUE ");
58	>
59	>	_foreach (const _L<By>, by, bys)
60	>	statement_ << _B("AND ") << *by << _B(" = ? ");
61	>
62	>	statement_ << _B("ORDER BY path LIMIT 50 OFFSET ?");
63	>
64	>	_R<dbi::Connection> connection(connector->Connect());
65	>	_R<dbi::Statement> statement(connection->Parse(statement_));
66	>
67	>	_foreach (const _L<cse::String>, item, items)
68	>	statement->Set(_index, *item);
69
70	<	while (albums_->MoveNext())
46	<	albums.InsertLast(albums_->GetString(_B("album")));
70	>	statement->Set(items.GetSize(), page * 50);
71
72	<	return albums;
72	>	_R<dbi::ResultSet> paths(statement->Execute());
73	>	_L<MediaFile> files;
74	>
75	>	while (paths->MoveNext())
76	>	files.InsertLast(GetFile(paths->GetString(_B("path"))));
77	>
78	>	connector->Release(connection);
79	>
80	>	return files;
81		}
82
83	<	_L<cse::String> Library::GetGenres() const
83	>	unsigned Library::GetFilesPages(const _L<By>& bys, const _L<cse::String>& items) const
84		{
85	<	_R<dbi::ResultSet> genres_(connection->Execute(_B("SELECT DISTINCT album FROM files WHERE live = TRUE")));
86	<	_L<cse::String> genres;
85	>	if (bys.IsEmpty() || ext::Contains(bys, By::LAST) || bys.GetSize() != items.GetSize())
86	>	return 0;
87	>
88	>	_S<ios::String> statement_;
89	>
90	>	statement_ << _B("SELECT count(path) FROM files WHERE live = TRUE ");
91	>
92	>	_foreach (const _L<By>, by, bys)
93	>	statement_ << _B("AND ") << *by << _B(" = ?");
94
95	<	while (genres_->MoveNext())
96	<	genres.InsertLast(genres_->GetString(_B("genre")));
95	>	_R<dbi::Connection> connection(connector->Connect());
96	>	_R<dbi::Statement> statement(connection->Parse(statement_));
97
98	<	return genres;
98	>	_foreach (const _L<cse::String>, item, items)
99	>	statement->Set(_index, *item);
100	>
101	>	_R<dbi::ResultSet> count(statement->Execute());
102	>	unsigned pages(0);
103	>
104	>	if (count->MoveNext())
105	>	pages = (count->Get<unsigned>(_B("count")) + 49) / 50;
106	>
107	>	connector->Release(connection);
108	>
109	>	return pages;
110		}
111
112	<	_L<MediaFolder> Library::GetFolders() const
112	>	_L<cse::String> Library::GetItems(_L<By> bys, _L<cse::String> items, unsigned page) const
113		{
114	<	_R<dbi::ResultSet> roots(connection->Execute(_B("SELECT DISTINCT root FROM files WHERE live = TRUE")));
115	<	_L<MediaFolder> folders;
114	>	if (bys.IsEmpty() || ext::Contains(bys, By::LAST) || bys.GetSize() - 1 != items.GetSize())
115	>	return _L<cse::String>();
116
117	<	while (roots->MoveNext())
118	<	folders.InsertLast(MediaFolder(connection, roots->GetString(_B("root"))));
117	>	_S<ios::String> statement_;
118	>	By by(bys.Last());
119
120	<	return folders;
120	>	statement_ << _B("SELECT DISTINCT ") << by << _B(" FROM files WHERE live = TRUE ");
121	>
122	>	bys.RemoveLast();
123	>
124	>	_foreach (const _L<By>, by_, bys)
125	>	statement_ << _B("AND ") << *by_ << _B(" = ? ");
126	>
127	>	statement_ << _B("ORDER BY ") << by << _B(" LIMIT 50 OFFSET ?");
128	>
129	>	_R<dbi::Connection> connection(connector->Connect());
130	>	_R<dbi::Statement> statement(connection->Parse(statement_));
131	>
132	>	_foreach (const _L<cse::String>, item, items)
133	>	statement->Set(_index, *item);
134	>
135	>	statement->Set(items.GetSize(), page * 50);
136	>
137	>	_R<dbi::ResultSet> items_(statement->Execute());
138	>
139	>	items.Clear();
140	>
141	>	while (items_->MoveNext())
142	>	items.InsertLast(items_->GetString(lexical_cast<cse::String>(by)));
143	>
144	>	connector->Release(connection);
145	>
146	>	return items;
147	>	}
148	>
149	>	unsigned Library::GetItemsPages(_L<By> bys, const _L<cse::String>& items) const
150	>	{
151	>	if (bys.IsEmpty() || ext::Contains(bys, By::LAST) || bys.GetSize() - 1 != items.GetSize())
152	>	return 0;
153	>
154	>	_S<ios::String> statement_;
155	>	By by(bys.Last());
156	>
157	>	statement_ << _B("SELECT count(DISTINCT ") << by << _B(") FROM files WHERE live = TRUE");
158	>
159	>	bys.RemoveLast();
160	>
161	>	_foreach (const _L<By>, by_, bys)
162	>	statement_ << _B(" AND ") << *by_ << _B(" = ?");
163	>
164	>	_R<dbi::Connection> connection(connector->Connect());
165	>	_R<dbi::Statement> statement(connection->Parse(statement_));
166	>
167	>	_foreach (const _L<cse::String>, item, items)
168	>	statement->Set(_index, *item);
169	>
170	>	_R<dbi::ResultSet> count(statement->Execute());
171	>	unsigned pages(0);
172	>
173	>	if (count->MoveNext())
174	>	pages = (count->Get<unsigned>(_B("count")) + 49) / 50;
175	>
176	>	connector->Release(connection);
177	>
178	>	return pages;
179		}

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