public static String GenerateData(int artistsCount = 100)
{
var result = "Total generated:";
using (var dc = new RVLDBDataContext())
{
//db cleanup
dc.ExecuteCommand(@"truncate table [dbo].[Playback];
truncate table [dbo].[Commission];
DELETE FROM [dbo].[Track];
DELETE FROM [dbo].[Artist]");
var artists = new Faker <Artist>()
.RuleFor(bp => bp.Name, f => f.Name.FullName())
.Generate(artistsCount)
.ToList();
//to get real id
dc.Artists.InsertAllOnSubmit(artists);
dc.SubmitChanges();
result += RD + "artists=" + artists.Count;
var commissions = artists
.Select(a => new Faker <Commission>()
.RuleFor(bp => bp.ArtistID, f => a.ID)
.RuleFor(bp => bp.CommissionValue, f => f.Random.Decimal(0.5m, 10m))
.Generate())
.ToList();
dc.IntoTable(commissions, "[dbo].[Commission]");
result += RD + "commissions=" + commissions.Count;
commissions.Clear();
var tracks = artists
.SelectMany(a => new Faker <Track>()
.RuleFor(bp => bp.ArtistID, f => a.ID)
.RuleFor(bp => bp.Name, f => f.Lorem.Sentence(3))
.RuleFor(bp => bp.Length, f => f.Random.Int(30, 600))//seconds
.Generate(new Faker().Random.Int(3, 100)).Select(x => x))
.Distinct()
.ToList();
dc.IntoTable(tracks, "[dbo].[Track]");
result += RD + "tracks=" + tracks.Count;
tracks.Clear();
var trackIDs = dc.Tracks.Select(x => new { x.ID, x.Length }).ToList();
var playbacks = new Faker().PickRandom(trackIDs, (int)(trackIDs.Count * 0.8))
.SelectMany(t => new Faker <Playback>()
.RuleFor(bp => bp.TrackID, f => t.ID)
.RuleFor(bp => bp.StartTime, f => f.Date.Past())
.RuleFor(bp => bp.ListenedLength, f => f.Random.Int(5, t.Length))//seconds
.Generate(new Faker().Random.Int(1, 500)).Select(x => x))
.Distinct()
.ToList();
dc.IntoTable(playbacks, "[dbo].[Playback]");
result += RD + "playbacks=" + playbacks.Count;
playbacks.Clear();
}
return(result);
}
