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POBest approach to insert on many to many tables using Identity columns on ServiceStack ORMLite
 

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  1. POBest approach to insert on many to many tables using Identity columns on ServiceStack ORMLite
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    <p>Yesterday I found this great ORM and would like to perform some testings on more complex stuff than the samples provided on github.</p> <p>This is the model I'm using</p> <pre><code>class BaseClass { [AutoIncrement] public int Id { get; set; } [StringLength(200)] public string Name { get; set; } } [Alias("artist")] class Artist : BaseClass { } [Alias("genre")] class Genre : BaseClass { } [Alias("artistgenre")] class ArtistGenre { [PrimaryKey] public int Id { get; set; } [Alias("idgenre")] [References(typeof(Genre))] public int IdGenre { get; set; } [Alias("idartist")] [References(typeof(Artist))] public int IdArtist { get; set; } } </code></pre> <p>And this is what I'm trying to achieve (although it doesn't work since the Identity values are unknown when inserting into artistgenre table).</p> <pre><code> if (dbConn.TableExists("artistgenre")) dbConn.DropTable&lt;ArtistGenre&gt;(); if (dbConn.TableExists("artist")) dbConn.DropTable&lt;Artist&gt;(); if (dbConn.TableExists("genre")) dbConn.DropTable&lt;Genre&gt;(); dbConn.CreateTables(false, typeof(Artist), typeof(Genre), typeof(ArtistGenre)); var genres = new List&lt;Genre&gt;(); genres.Add(new Genre() { Name = "Rock" }); genres.Add(new Genre() { Name = "Pop" }); genres.Add(new Genre() { Name = "Jazz" }); genres.Add(new Genre() { Name = "Classic" }); genres.Add(new Genre() { Name = "Bossanova" }); var artists = new List&lt;Artist&gt;(); artists.Add(new Artist() { Name = "Rush" }); artists.Add(new Artist() { Name = "Queen" }); artists.Add(new Artist() { Name = "Pat Metheny" }); var ag = new List&lt;ArtistGenre&gt;(); var a = artists.FirstOrDefault(c =&gt; c.Name == "Rush"); var g = genres.FirstOrDefault(c =&gt; c.Name == "Rock"); ag.Add(new ArtistGenre() { IdArtist = a.Id, IdGenre = g.Id }); dbConn.SaveAll&lt;Artist&gt;(artists); dbConn.SaveAll&lt;Genre&gt;(genres); dbConn.SaveAll&lt;ArtistGenre&gt;(ag); </code></pre> <p>Is there a simple solution other than adding each row and obtaining its Identity values?</p> <p>Thanks. </p>
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