public void Run()
{
Console.WriteLine("Postgres Document Demo - TEST DATA");
Console.WriteLine("====================================");
Console.WriteLine("Initialize Test Db");
var sw = new Stopwatch();
sw.Start();
_testDb = new PgChinookDb("biggy_test", dropCreateTables: true);
sw.Stop();
Console.WriteLine("Initialized and reset PG database in {0} MS", sw.ElapsedMilliseconds);
Console.WriteLine("Write some complex artist documents, with nested albums and tracks, from sample data...");
int qtyArtists = 1000;
int qtyAlbumsPerArtist = 5;
int qtyTracksPerAlbum = 8;
var sampleArtistDocuments = SampleData.GetSampleArtistDocuments(qtyArtists, qtyAlbumsPerArtist, qtyTracksPerAlbum);
sw.Reset();
sw.Start();
_testDb.ArtistDocuments.Add(sampleArtistDocuments);
sw.Stop();
Console.WriteLine("Wrote {0} artist document records in {1} ms", sampleArtistDocuments.Count, sw.ElapsedMilliseconds);
Console.WriteLine("Total of {0} artists, {1} albums, and {2} tracks nested in artist documents",
qtyArtists, qtyArtists * qtyAlbumsPerArtist, qtyArtists * qtyAlbumsPerArtist * qtyTracksPerAlbum);
Console.WriteLine("");
Console.WriteLine("Re-Initialize Db and read all that data from back-end...");
sw.Reset();
sw.Start();
_testDb.LoadData();
sw.Stop();
Console.WriteLine("Read all data from store in {0} ms", sw.ElapsedMilliseconds);
Console.WriteLine("{0} complex artist documents", _testDb.ArtistDocuments.Count);
foreach (var artist in sampleArtistDocuments)
{
artist.Name = "UPDATED " + artist.ArtistDocumentId;
artist.Albums.FirstOrDefault().Title = "UPDATED ALBUM";
}
sw.Reset();
sw.Start();
_testDb.ArtistDocuments.Update(sampleArtistDocuments);
sw.Stop();
Console.WriteLine("Updated {0} artist documents in {1} ms", sampleArtistDocuments.Count, sw.ElapsedMilliseconds);
sw.Reset();
sw.Start();
_testDb.ArtistDocuments.Remove(sampleArtistDocuments);
sw.Stop();
Console.WriteLine("Removed {0} artist documents in {1} ms", sampleArtistDocuments.Count, sw.ElapsedMilliseconds);
Console.WriteLine("");
Console.WriteLine("Postgres Document Demo - CHINOOK DATA");
Console.WriteLine("=======================================");
Console.WriteLine("Now let's use some actual data from Chinook Db to build some documents...");
sw.Reset();
sw.Start();
_chinookDb = new PgChinookDb("chinook-pg");
sw.Stop();
Console.WriteLine("Initialized Chinook data in {0} ms - loaded:", sw.ElapsedMilliseconds);
Console.WriteLine("{0} Artists", _chinookDb.Artists.Count);
Console.WriteLine("{0} Albums", _chinookDb.Albums.Count);
Console.WriteLine("{0} Tracks", _chinookDb.Tracks.Count);
Console.WriteLine("");
Console.WriteLine("Nest chinook albums and tracks under artists complex documents and save");
Console.WriteLine("=======================================================================");
Console.WriteLine("");
Console.WriteLine("Clear previous data from artist documents table...");
int qtyRecordsToDelete = _testDb.ArtistDocuments.Count;
sw.Start();
_testDb.ArtistDocuments.Clear();
sw.Stop();
Console.WriteLine("tDeleted {0} artist document records in {1} ms", qtyRecordsToDelete, sw.ElapsedMilliseconds);
Console.WriteLine("");
Console.WriteLine("Create artist documents using chinook data...");
sw.Reset();
sw.Start();
var artistDocumentsToAdd = new List <ArtistDocument>();
// Read from Chinook db, and combine artist, album, and track info into documents:
foreach (var artist in _chinookDb.Artists)
{
var newArtistDoc = new ArtistDocument {
ArtistDocumentId = artist.ArtistId, Name = artist.Name
};
var artistAlbums = (from a in _chinookDb.Albums where a.ArtistId == artist.ArtistId select a).ToList();
foreach (var album in artistAlbums)
{
var newAlbumDocument = new AlbumDocument {
AlbumId = album.AlbumId, ArtistId = album.ArtistId, Title = album.Title
};
var albumTracks = from t in _chinookDb.Tracks where t.AlbumId == album.AlbumId select t;
foreach (var track in albumTracks)
{
newAlbumDocument.Tracks.Add(new Track {
TrackId = track.TrackId, AlbumId = newAlbumDocument.AlbumId, Name = track.Name
});
}
newArtistDoc.Albums.Add(newAlbumDocument);
}
artistDocumentsToAdd.Add(newArtistDoc);
}
sw.Stop();
Console.WriteLine("");
Console.WriteLine("Read \r\n{0} artists, \r\n{1} albums, and \r\n{2} tracks \r\nfrom Chinook and assembled into complex artist documents in {3} ms",
_chinookDb.Artists.Count, _chinookDb.Albums.Count, _chinookDb.Tracks.Count, sw.ElapsedMilliseconds);
sw.Reset();
sw.Start();
_testDb.ArtistDocuments.Add(artistDocumentsToAdd);
sw.Stop();
Console.WriteLine("");
Console.WriteLine("Wrote all {0} complex artist documents to PG Store in {1} ms", _testDb.ArtistDocuments.Count, sw.ElapsedMilliseconds);
}
public void Run()
{
Console.WriteLine("Postgres Relational Demo - TEST DATA");
Console.WriteLine("====================================");
Console.WriteLine("Initialize Test Db");
var sw = new Stopwatch();
sw.Start();
_testDb = new PgChinookDb("biggy_test", dropCreateTables: true);
sw.Stop();
Console.WriteLine("Initialized and reset PG database in {0} MS", sw.ElapsedMilliseconds);
Console.WriteLine("Write some test data...");
var sampleArtists = SampleData.GetSampleArtists(qty: 1000);
var sampleAlbums = SampleData.GetSampleAlbums(qtyPerArtist: 5);
var sampleTracks = SampleData.GetSampleTracks(qtyPerAlbum: 8);
sw.Reset();
sw.Start();
_testDb.Artists.Add(sampleArtists);
sw.Stop();
Console.WriteLine("Wrote {0} artist records in {1} ms", sampleArtists.Count, sw.ElapsedMilliseconds);
sw.Reset();
sw.Start();
_testDb.Albums.Add(sampleAlbums);
sw.Stop();
Console.WriteLine("Wrote {0} album records in {1} ms", sampleAlbums.Count, sw.ElapsedMilliseconds);
sw.Reset();
sw.Start();
_testDb.Tracks.Add(sampleTracks);
sw.Stop();
Console.WriteLine("Wrote {0} track records in {1} ms", sampleTracks.Count, sw.ElapsedMilliseconds);
Console.WriteLine("");
Console.WriteLine("Re-Initialize Db and read all that data from back-end...");
sw.Reset();
sw.Start();
_testDb.LoadData();
sw.Stop();
Console.WriteLine("Read all data from store in {0} ms", sw.ElapsedMilliseconds);
Console.WriteLine("{0} Artists", _testDb.Artists.Count);
Console.WriteLine("{0} Albums", _testDb.Albums.Count);
Console.WriteLine("{0} Tracks", _testDb.Tracks.Count);
Console.WriteLine("Update a whole bunch of artist records...");
var updateArtists = _testDb.Artists.ToList();
foreach (var artist in updateArtists)
{
artist.Name = "Updated Artist " + artist.ArtistId;
}
sw.Reset();
sw.Start();
_testDb.Artists.Update(updateArtists);
sw.Stop();
Console.WriteLine("Updated {0} artist records in {1} ms", updateArtists.Count, sw.ElapsedMilliseconds);
Console.WriteLine("");
Console.WriteLine("Postgres Relational Demo - CHINOOK DATA");
Console.WriteLine("=======================================");
Console.WriteLine("Now let's use some actual data from Chinook Db...");
sw.Reset();
sw.Start();
_chinookDb = new PgChinookDb("chinook-pg");
sw.Stop();
Console.WriteLine("Initialized Chinook data in {0} ms - loaded:", sw.ElapsedMilliseconds);
Console.WriteLine("{0} Artists", _chinookDb.Artists.Count);
Console.WriteLine("{0} Albums", _chinookDb.Albums.Count);
Console.WriteLine("{0} Tracks", _chinookDb.Tracks.Count);
Console.WriteLine("");
Console.WriteLine("Some fancy Querying - CHINOOK DATA");
Console.WriteLine("==================================");
Console.WriteLine("");
Console.WriteLine("Find all albums by a particular Artist using LINQ join");
string artistToFind = "Metallica";
sw.Reset();
sw.Start();
var artistAlbums = (from a in _chinookDb.Albums
join ar in _chinookDb.Artists on a.ArtistId equals ar.ArtistId
where ar.Name == artistToFind
select a).ToList();
// We use .ToList() because the objects aren't enumerated until used - we want a rough perf measurement to fetch the objects.
sw.Stop();
Console.WriteLine("\tArtist: {0}:", artistToFind);
foreach (var album in artistAlbums)
{
Console.WriteLine("\t -{0}", album.Title);
}
Console.WriteLine("Found {0} albums for {1} out of {2} in {3} ms", artistAlbums.Count(), artistToFind, _chinookDb.Albums.Count, sw.ElapsedMilliseconds);
Console.WriteLine("");
Console.WriteLine("Find all tracks by a particular Artist using triple LINQ join");
artistToFind = "AC/DC";
sw.Reset();
sw.Start();
var artistTracks = (from t in _chinookDb.Tracks
join al in _chinookDb.Albums on t.AlbumId equals al.AlbumId
join ar in _chinookDb.Artists on al.ArtistId equals ar.ArtistId
where ar.Name == artistToFind
select t).ToList();
Console.WriteLine("\tArtist: {0}:", artistToFind);
foreach (var track in artistTracks)
{
Console.WriteLine("\t -{0}", track.Name);
}
Console.WriteLine("Found {0} tracks for {1} from {2} albums among {3} total tracks in {4} ms", artistTracks.Count(), artistToFind, _chinookDb.Albums.Count, _chinookDb.Tracks.Count, sw.ElapsedMilliseconds);
}